HP HP LaserJet Printer 8000 Manuel de service

Copyright© 1998Hewlett-Packard Co.Printed in USAManual Part No.C4085-91087*C4085-91087**C4085-91087*C4085-91087Printed on at least50% Total Recycled F

viii C4085-91087Material Safety Data Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38Environmental Conformity. . . . . . . . . .

72 Chapter 3 Operating Overview C4085-91087EIO Menu EIO (enhanced input/output) Menus depend on the particular accessory product installed in an EIO s

C4085-91087 Control Panel Menus 73CFG TCP/IP=NO NOYESNO: The TCP/IP Menu is not accessible.YES: The TCP/IP Menu appears. In the TCP/IP Menu, you can s

74 Chapter 3 Operating Overview C4085-91087Resets MenuCAUTION Use this menu with caution. You can lose buffered page data or printer configuration set

C4085-91087 Service Mode 75Service ModeThe Service Mode should be used only by authorized service personnel. While in Service Mode, you can:●Verify an

76 Chapter 3 Operating Overview C4085-91087Table 3-12. Service Mode Menu ItemsService Mode Menu ItemsItem Choices Actions RequiredPAGECOUNT= nnnnnnn D

C4085-91087 Service Mode 77DIAGNOSTICS= OFF *ONPAGECOUNT=nnnnnnnFor factory test purposes ONLY.DO NOT change.Press + to step through values above curs

78 Chapter 3 Operating Overview C4085-91087Setting Page Count, Maintenance Count,and Serial NumberThe page count, maintenance count, and printer seria

C4085-91087 Service Mode 79Setting the Cold Reset Default Paper SizeWhen replacing a Formatter PCA with a default paper size setting of A4, set COLD R

80 Chapter 3 Operating Overview C4085-91087Testing the PrinterPaper Path TestYou can test printer operation with the Paper Path Test in the Test Menu.

C4085-91087 Chapter Contents 814Maintenance and AdjustmentsChapter ContentsCleaning the Printer and Accessories- - - - - - - - - - - -82Pr

C4085-91087 Table of Contents ix4 Maintenance and AdjustmentsCleaning the Printer and Accessories . . . . . . . . . . . . . . . . . . . . . .82Cleanin

82 Chapter 4 Maintenance and Adjustments C4085-91087Cleaning the Printer and AccessoriesTo maintain print quality and paper performance, thoroughly cl

C4085-91087 Chapter 4 Maintenance and Adjustments 83 Cleaning the Printer1Before you begin these steps, turn the printer off and unplug all cords.2 O

84 Chapter 4 Maintenance and Adjustments C4085-91087Cleaning Spilled TonerDefective toner cartridges can develop leaks. Also, after a paper jam has oc

C4085-91087 Preventative Maintenance 85Preventative MaintenanceThe user-conducted preventative maintenance cycle for this printer is every 350,000 ima

86 Chapter 4 Maintenance and Adjustments C4085-91087Tray Adjustment ProcedureThis procedure applies to Trays 2 and 3 (the standard paper trays in the

C4085-91087 Tray Adjustment Procedure 87Note See figure 4-2. Each adjustment notch changes the physical position of the tray by 0.5 mm (0.02 inch). Mo

88 Chapter 4 Maintenance and Adjustments C4085-91087Tray 4 (2000-sheet Input Tray) Adjustment ProcedureThis procedure applies to the 2000-sheet Input

C4085-91087 Tray 4 (2000-sheet Input Tray) Adjustment Procedure 895 Locate the bracket hole and pin at the middle (right side) (see figure 4-3).6 Slid

90 Chapter 4 Maintenance and Adjustments C4085-91087

C4085-91087 915Functional Overview Chapter contentsPrinter Functional Block Diagram- - - - - - - - - - - - - -92Power Distribution Syst

x C4085-91087Main Functional Cycles of the Stapler (Internal Paper Path) . . . . . . . . . . . . . . . . . . . . . . . . . . .141Communication Link

92 Chapter 5 Functional Overview C4085-91087Printer Functional Block DiagramFigure 5-1 is a functional block diagram of the printer showing the basic

C4085-91087 Power Distribution System 93Power Distribution SystemThe AC and DC power supply circuits are contained in the Low Voltage Power Supply (LV

94 Chapter 5 Functional Overview C4085-91087AC Power DistributionThe AC power circuitry supplies AC voltage whenever the power cord is connected, and

C4085-91087 Power Distribution System 95High Voltage Power DistributionThe High Voltage Power Supply (HVPS, see figure 5-4) applies a DC-biased AC vol

96 Chapter 5 Functional Overview C4085-91087Formatter SystemThe Formatter PCA is responsible for the following:●Controlling the power save mode.●Recei

C4085-91087 Formatter System 97• A paper tray is opened and then closed.• The Engine Test microswitch is pressed.Note Printer error messages override

98 Chapter 5 Functional Overview C4085-91087EconoModeThe EconoMode setting uses less toner than the normal printing mode by reducing the dot density.

C4085-91087 DC Controller System 99DC Controller SystemThe following systems and functions are controlled by the DC Controller PCA:●DC Power Distribut

100 Chapter 5 Functional Overview C4085-91087Engine Test MicroswitchThe Engine Test Microswitch, located on the top side of the DC Controller PCA, is

C4085-91087 Image Formation System 101Image Formation SystemLaser printing requires the interaction of several different technologies (such as electro

C4085-91087 Table of Contents xi2000-sheet Input Tray Removal and Replacement. . . . . . . . . . .231Orientation . . . . . . . . . . . . . . . . . .

102 Chapter 5 Functional Overview C4085-91087Toner CartridgeThe toner cartridge is the “heart” of the Image Formation System. It houses the cleaning,

C4085-91087 Image Formation System 103The Photosensitive DrumThe image from the Laser/Scanner Assembly is written on the drum surface, developed, and

104 Chapter 5 Functional Overview C4085-91087Drum CleaningThe cleaning blade inside the toner cartridge is in contact with the surface of the drum at

C4085-91087 Image Formation System 105Drum ConditioningAfter the drum is physically cleaned, it is conditioned by applying a uniform negative charge a

106 Chapter 5 Functional Overview C4085-91087Image WritingDuring the writing process, a modulated laser diode projects a beam onto a rotating six-side

C4085-91087 Image Formation System 107FastRes 1200FastRes 1200 (PCL 6 only) is an HP developed technology that can represent each dot space as one of

108 Chapter 5 Functional Overview C4085-91087Image DevelopingThe developing process changes the latent electrostatic image into a visible image by dep

C4085-91087 Image Formation System 109The toner particles obtain a negative static charge by rubbing against the developing cylinder, which is charged

110 Chapter 5 Functional Overview C4085-91087Image Transferring and Media SeparationDuring the image transferring process, the toner image on the drum

C4085-91087 Image Formation System 111Image FusingThe Fusing Assembly bonds the toner particles into the media with a heated fusing roller and a soft

xii C4085-91087Controller PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .304Power Supply . . . . . . . . . . . . . . . .

112 Chapter 5 Functional Overview C4085-91087Paper Paths and ComponentsPrinter, Duplexer, and Envelope FeederThe components of the printer paper path

C4085-91087 Paper Paths and Components 113Note See figure 5-15 on page 114 for the locations of sensors, solenoids, clutches, motors and fans in table

114 Chapter 5 Functional Overview C4085-91087Figure 5-15 Printer Sensors, Solenoids, Clutches, Motors, and Fans Tray 2, SW1601 Tray 2 Paper Size Sens

C4085-91087 Paper Paths and Components 115Paper Size Switches (Trays 2 and 3)The paper guides in Trays 2 and 3 operate four levers at the back of the

116 Chapter 5 Functional Overview C4085-91087image transfer and fusing processes. After the paper passes through the Fuser, it triggers PS1403 and PS1

C4085-91087 Paper Paths and Components 1172000-sheet Input Tray (Tray 4) ComponentsThe HP 2000-sheet Input Tray now supports variable engine input spe

118 Chapter 5 Functional Overview C4085-91087Table 5-3. 2000-sheet Input Tray Sensors, Switches, Clutches and MotorsControl Device Description Locatio

C4085-91087 Paper Paths and Components 119Figure 5-17 2000-sheet Input Tray Sensors, Switches, Clutches, and Motors2000-Sheet Input Tray OperationPick

120 Chapter 5 Functional Overview C4085-91087 When the Paper Handling Controller on the printer sends an input command to the Controller PCA on the 20

C4085-91087 Paper Paths and Components 121Lifter OperationThe lifter plate in the 2000-sheet Input Tray’s paper tray is held by two wires that are wou

C4085-91087 Table of Contents xiii7 TroubleshootingTroubleshooting Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .376Printer and

122 Chapter 5 Functional Overview C4085-910872 x 500-sheet Input TrayThe 2 x 500-sheet Input Tray is an input paper handling device that provides two

C4085-91087 Paper Paths and Components 123Figure 5-19 2 x 500-sheet input Tray Sensors and Switches Table 5-6. 2 x 500-sheet Input Tray Sensors, Switc

124 Chapter 5 Functional Overview C4085-910872 x 500-sheet Input Tray OperationCommunication and control of the input device are made through the Pape

C4085-91087 Paper Paths and Components 125If the paper fails to reach the PS1 and PS2 sensors in the VTU within the allotted time, the Controller PCA

126 Chapter 5 Functional Overview C4085-910877-bin Tabletop Mailbox Components Components of the 7-bin Tabletop Mailbox paper path, including mailbox

C4085-91087 Paper Paths and Components 127Figure 5-21 7-bin Tabletop Mailbox Components (2 of 2)Table 5-8. 7-bin Tabletop Mailbox Sensors, Switches, a

128 Chapter 5 Functional Overview C4085-910877-bin Tabletop Mailbox OperationThe 7-bin Tabletop Mailbox is a low cost output device designed to suppor

C4085-91087 Paper Paths and Components 129Delivering Paper If the paper is going to the Face-up Bin, the Face-up Delivery Sensor (FUDS) waits for the

130 Chapter 5 Functional Overview C4085-91087Job Separator Mode●Print jobs are automatically sent one job per bin to the first empty bin beginning wit

C4085-91087 Paper Paths and Components 131Figure 5-22 7-bin Tabletop Mailbox Block Diagram

xiv C4085-91087Printer Parts and Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . .512Paper-Handling Devices Parts and Diagrams. . .

132 Chapter 5 Functional Overview C4085-910878-bin Mailbox ComponentsThe 8-bin Mailbox is an output unit designed for variable speeds, ranging from 6

C4085-91087 Paper Paths and Components 133Table 5-9. 8-bin Mailbox Sensors, Switches, Motors, and Controller PCAControl DeviceDescription LocationM1 D

134 Chapter 5 Functional Overview C4085-91087Figure 5-24 8-bin Mailbox Sensors, Switches, Motors, and Controller PCA

C4085-91087 Paper Paths and Components 1358-bin Mailbox OperationPower-on SequenceDuring the power-on sequence, the Delivery Head Assembly moves first

136 Chapter 5 Functional Overview C4085-91087Mailbox ModeIn Mailbox Mode, the network administrator can address each bin as an output destination with

C4085-91087 Paper Paths and Components 137Collator Mode●Mopies of a print job are automatically sent one mopy per bin beginning with the top bin.●If t

138 Chapter 5 Functional Overview C4085-91087Figure 5-25 Finisher Paper PathFigure 5-26 Stapler Motors, Sensors, and Switches

C4085-91087 Paper Paths and Components 139Stapler Unit OperationAll communication and control of the mailbox, the 2000-sheet Input Tray, and the stapl

140 Chapter 5 Functional Overview C4085-91087Power-On or Reset SequenceAt power-on or reset, events are performed in the following sequence:1 Stapler

C4085-91087 Paper Paths and Components 141Main Functional Cycles of the Stapler (Internal Paper Path)Figure 5-27 Stapler Cycles Paper Feed CycleThe st

C4085-91087 xvList of FiguresFigure 1-1 Sample Model and Serial Number Label for the Printer - - - - - - 6Figure 1-2 Orientation for Dimensi

142 Chapter 5 Functional Overview C4085-91087Stapling CycleThe Sliders move the stack of sheets to the stapling position. The Registration Pusher appl

C4085-91087 Paper Paths and Components 143Figure 5-28 Recommended C-link Configuration (Daisy Chain)

144 Chapter 5 Functional Overview C4085-91087Paper Jam Detection The PIU Sensor (PS2), the Registration Sensor (PS1), the Fuser Delivery Sensor (PS140

C4085-91087 Printer Timing 145Figure 5-29 General Timing Diagram (1 of 2)

146 Chapter 5 Functional Overview C4085-91087Figure 5-30 General Timing Diagram (2 of 2)

C4085-91087 IEEE 1284 Parallel Cable Information 147IEEE 1284 Parallel Cable InformationThis cable is IEEE compliant with A-to-C connectors. To take a

148 Chapter 5 Functional Overview C4085-91087

C4085-91087 Chapter contents 1496Removal and Replacement Chapter contentsRemoval and Replacement Strategy - - - - - - - - - - - 150Requir

150 Chapter 6 Removal and Replacement C4085-91087Removal and Replacement StrategyThis chapter documents the removal and replacement of major assemblie

C4085-91087 Required Tools 151Required Tools●#2 magnetized Phillips screwdriver (6-inch shaft)●Small flat-blade screwdriver●Small pair needle-nose pli

xvi C4085-91087Figure 5-25 Finisher Paper Path- - - - - - - - - - - - - - - - - - - - - - - 138Figure 5-26 Stapler Motors, Se

152 Chapter 6 Removal and Replacement C4085-91087User Installable Accessories Memory and Personality UpgradeCAUTIONDIMMs and the Formatter PCA can be

C4085-91087 User Installable Accessories 153Disk DriveFigure 6-2 Disk DriveTo remove the disk drive:1 Turn the printer off, and unplug it.2 Loosen the

154 Chapter 6 Removal and Replacement C4085-91087Duplexer1 With the printer turned off and unplugged, open the Diverter door on the left side of the p

C4085-91087 User Installable Accessories 1552000-sheet or 2 x 500-sheet Input Tray1 With the printer turned off and the power cable unplugged, disconn

156 Chapter 6 Removal and Replacement C4085-910878-bin Mailbox/5-bin Mailbox with Stapler 1 With the printer turned off and unplugged, disconnect the

C4085-91087 User Installable Accessories 1577-bin Tabletop Mailbox1 With the printer turned off and unplugged (A), disconnect the C-link cable from th

158 Chapter 6 Removal and Replacement C4085-91087To Reinstall:1 Place the mailbox onto the stand by aligning the threaded studs on the connector plate

C4085-91087 User Installable Accessories 1594 Secure the mailbox to the stand by tightening the thumb fastener onto the studs beneath the tray extensi

160 Chapter 6 Removal and Replacement C4085-91087Hardware TableNote The screws listed in table 6-1 are also listed in Chapter 8 with their respective

C4085-91087 Hardware Table 161Kit 1 Complete hardware screw kit for 2000-sheet Input TrayRY7-5044-000CN 2000-sheet Input Tray, general useKit 3 Comple

C4085-91087 List of Figures xviiFigure 6-42 Output Paper Sensor PCA (1 of 4) - - - - - - - - - - - - - - - 208Figure 6-43 Output Paper

162 Chapter 6 Removal and Replacement C4085-91087Engine Removal and ReplacementControl Panel- - - - - - - - - - - - - - - - - - - -

C4085-91087 Engine Removal and Replacement 163Control Panel Figure 6-3 Control Panel (1 of 2)1 While pushing in on the center area (figure 6-3, callou

164 Chapter 6 Removal and Replacement C4085-91087Figure 6-4 Control Panel (2 of 2)2 Press down on the back while pushing up on the front of the Contro

C4085-91087 Engine Removal and Replacement 165CoversThere are five cover assemblies in this printer:●AC Access Cover, located at the left rear of the

166 Chapter 6 Removal and Replacement C4085-91087AC Access CoverFigure 6-5 AC Access Cover1 Remove the Formatter PCA.2 Remove 3 screws (figure 6-5, ca

C4085-91087 Engine Removal and Replacement 167Back CoverFigure 6-6 Back Cover Note Remove the metal back cover and the plastic panel at the right rear

168 Chapter 6 Removal and Replacement C4085-91087Front CoverFigure 6-7 Front Cover (1 of 2)1 Open all access doors and remove the Duplexer if installe

C4085-91087 Engine Removal and Replacement 169Figure 6-8 Front Cover (2 of 2)3 Open the Diverter Access Door and release the two plastic retaining tab

170 Chapter 6 Removal and Replacement C4085-91087Left Lower CoverFigure 6-9 Left Lower CoverCAUTION Be careful not to damage the plastic guides on the

C4085-91087 Engine Removal and Replacement 171Top CoverFigure 6-10 Top Cover (1 of 2) 1 Remove the Control Panel (see figure 6-3 on page 163), then re

xviii C4085-91087Figure 6-88 Right Cover (2 of 3) - - - - - - - - - - - - - - - - - - - - - - - 269Figure 6-89 Right Cover (3

172 Chapter 6 Removal and Replacement C4085-91087Figure 6-11 Top Cover (2 of 2)3 Open the top cover door, and remove 1 screw (figure 6-11, callout 3).

C4085-91087 Engine Removal and Replacement 173To Reinstall:CAUTION Be careful not to damage the Standard Output Bin Full sensor flag (figure 6-11, cal

174 Chapter 6 Removal and Replacement C4085-91087Delivery Unit (for Standard Output Bin)Figure 6-12 Delivery Unit (1 of 2)1 Remove the following compo

C4085-91087 Engine Removal and Replacement 175 Figure 6-13 Delivery Unit (2 of 2)6 Remove 2 screws (figure 6-12, callout 5) and 1 screw (figure 6-12,

176 Chapter 6 Removal and Replacement C4085-91087To Reinstall:CAUTION Be careful not to damage the plastic sensor flags and gears on the left end of t

C4085-91087 Engine Removal and Replacement 177Diverter Assembly Figure 6-14 Diverter AssemblyCAUTION Support the Diverter Assembly access door during

178 Chapter 6 Removal and Replacement C4085-91087Diverter Door Assembly Figure 6-15 Diverter Door Assembly1 Open the Diverter access door, and release

C4085-91087 Engine Removal and Replacement 179Lower Right Door Assembly Figure 6-16 Lower Right Door Assembly (1 of 3)1 Remove the back cover assembly

180 Chapter 6 Removal and Replacement C4085-91087Figure 6-17 Right Lower Door Assembly (2 of 3)4 Remove 4 screws (figure 6-17, callout 2).

C4085-91087 Engine Removal and Replacement 181Figure 6-18 Right Lower Door Assembly (3 of 3)5 Release two retainer tabs from the inside of the Tray 3

C4085-91087 List of Figures xixFigure 6-135 Full Bin and Interlock Sensor PCA (2 of 2)- - - - - - - - - - - - 316Figure 6-136 LED PCA - -

182 Chapter 6 Removal and Replacement C4085-91087Fan 1, Laser/Scanner and Housing (Exhaust) Fan HousingFigure 6-19 Fan 1, Laser/Scanner (1 of 2) 1 Rem

C4085-91087 Engine Removal and Replacement 183Fan 1 MotorFigure 6-20 Fan 1, Laser/Scanner (2 of 2)1 Unplug the fan cable from the DC Controller PCA.2

184 Chapter 6 Removal and Replacement C4085-91087Fan 2, Low Voltage Power Supply (Exhaust)Figure 6-21 Fan 2, Low Voltage Power Supply1 Remove the back

C4085-91087 Engine Removal and Replacement 185Fan 3, Formatter Fan and Housing (Intake) Fan MotorFigure 6-22 Fan 3, Formatter FanNote The fan motor (F

186 Chapter 6 Removal and Replacement C4085-91087Fan 4, Delivery Unit (Exhaust)Figure 6-23 Fan 4, Delivery Unit 1 Remove the top cover (see figure 6-1

C4085-91087 Engine Removal and Replacement 187Tray 1Figure 6-24 Tray 1 Removal (1 of 3)1 To remove Tray 1, open the tray fully, then partially close i

188 Chapter 6 Removal and Replacement C4085-91087Figure 6-25 Tray 1 Removal (2 of 3)3 Raise the right side of the tray and guide the white tab around

C4085-91087 Engine Removal and Replacement 189Figure 6-26 Tray 1 Removal (3 of 3)4 Slide the tray to the right, to free the tray on the left side of t

190 Chapter 6 Removal and Replacement C4085-91087Tray 1 Pickup AssemblyFigure 6-27 Tray 1 Pickup Unit Removal (1 of 4)1 Remove the Front Cover.2 Remov

C4085-91087 Engine Removal and Replacement 191Figure 6-28 Tray 1 Pickup Unit Removal (2 of 4)6 Disconnect the cables (callouts 1 and 2) on the right s

xx C4085-91087Figure 6-182 Stapler Controller PCA (1 of 3) - - - - - - - - - - - - - - - - - 367Figure 6-183 Stapler Controller PC

192 Chapter 6 Removal and Replacement C4085-91087Figure 6-29 Tray 1 Pickup Unit Removal (3 of 4)8 Tilt the Pickup Assembly out of the chassis from the

C4085-91087 Engine Removal and Replacement 193Figure 6-30 Tray 1 Pickup Unit Removal (4 of 4)To Reinstall:First, seat the 3 tabs (callout 1) behind th

194 Chapter 6 Removal and Replacement C4085-91087Feeder AssemblyFigure 6-31 Feeder Assembly (1 of 2)1 Open the left access door and remove the Duplexe

C4085-91087 Engine Removal and Replacement 195Figure 6-32 Feeder Assembly (2 of 2)8 Remove 1 screw at the back of the Feeder Assembly (figure 6-32).No

196 Chapter 6 Removal and Replacement C4085-91087Formatter AssemblySetting Page Count, Maintenance Count, and Serial NumberThe page count, maintenance

C4085-91087 Engine Removal and Replacement 197Removing and Replacing the Formatter AssemblyFigure 6-33 Formatter Assembly1 If the Formatter is to be r

198 Chapter 6 Removal and Replacement C4085-91087Fusing AssemblyFigure 6-34 Fusing Assembly1 Open the Diverter Assembly access door, and remove the Du

C4085-91087 Engine Removal and Replacement 199To Reinstall:1 Make sure that the Fuser Output sensor flag (figure 6-34, callout 3) on the upper left co

200 Chapter 6 Removal and Replacement C4085-91087Laser/Scanner AssemblyCAUTIONThe Laser/Scanner diode is extremely sensitive to ESD.1 Remove the toner

C4085-91087 Engine Removal and Replacement 2014 Re-route the cable running across the top of the assembly so that it is out of the way.CAUTION Do not

C4085-91087 List of Figures xxiFigure 8-12 8-bin Mailbox Components (2 of 3) - - - - - - - - - - - - - - - 538Figure 8-13 8-bin Mailbox

202 Chapter 6 Removal and Replacement C4085-91087Main Gear Assembly1 Remove the following components in the order listed:• Toner Cartridge•Tray 1•Tray

C4085-91087 Engine Removal and Replacement 203Note A slight gentle rocking motion will help free the Main Gear Assembly from the printer.3 From inside

204 Chapter 6 Removal and Replacement C4085-91087Figure 6-38 Main Gear Assembly (3 of 3)2 Tilt the top of the assembly inward and insert the upper bac

C4085-91087 Engine Removal and Replacement 205Main Motor AssemblyFigure 6-39 Main Motor1 Remove the back cover (see figure 6-6 on page 167).2 Remove t

206 Chapter 6 Removal and Replacement C4085-91087Paper Input Unit (PIU)Figure 6-40 Paper Input Unit1 Remove Tray 2 and Tray 3. Remove both trays to pr

C4085-91087 Engine Removal and Replacement 207PCA, DC ControllerFigure 6-41 DC Controller PCA1 Remove the Formatter Assembly (see figure 6-33 on page

208 Chapter 6 Removal and Replacement C4085-91087Output Paper Sensor PCA 1 Remove the following components in the order listed:• Toner Cartridge• Form

C4085-91087 Engine Removal and Replacement 209Figure 6-43 Output Paper Sensor PCA (2 of 4)3 Remove 5 screws (figure 6-43, callout 2), and remove the F

210 Chapter 6 Removal and Replacement C4085-91087Figure 6-44 Output Paper Sensor PCA (3 of 4)4 Remove 3 screws (figure 6-44, callout 3), and remove th

C4085-91087 Engine Removal and Replacement 211Figure 6-45 Output Paper Sensor PCA (4 of 4)5 Unplug the connector (figure 6-45, callout 4).6 Remove 2 s

xxii C4085-91087

212 Chapter 6 Removal and Replacement C4085-91087Paper Size PCAFigure 6-46 Paper Size PCA (1 of 3)1 Remove the following components in the order liste

C4085-91087 Engine Removal and Replacement 213Figure 6-47 Paper Size PCA (2 of 3)Note The Paper Size PCA for Tray 2 (figure 6-47, callout 4) is identi

214 Chapter 6 Removal and Replacement C4085-91087Figure 6-48 Paper Size PCA (3 of 3)To Reinstall:Make sure that the actuating fingers are aligned with

C4085-91087 Engine Removal and Replacement 215High Voltage Power Supply (HVPS)Figure 6-49 High Voltage Power Supply1 Remove the back cover (see figure

216 Chapter 6 Removal and Replacement C4085-91087Low Voltage Power Supply (LVPS)Figure 6-50 Low Voltage Power Supply1 Remove the Formatter Assembly (s

C4085-91087 Engine Removal and Replacement 217Registration AssemblyFigure 6-51 Registration Assembly (1 of 3)1 Open the top cover door and remove the

218 Chapter 6 Removal and Replacement C4085-91087Figure 6-52 Registration Assembly (2 of 3)5 Unplug the clutch cable from the clutch on the right end

C4085-91087 Engine Removal and Replacement 219Figure 6-53 Registration Assembly (3 of 3)6 Lift the registration guide and remove 2 screws at the front

220 Chapter 6 Removal and Replacement C4085-91087Tray 1 Feed Roller and Separation PadFeed RollerFigure 6-54 Tray 1 Feed Roller1 Open the Tray 1 door,

C4085-91087 Engine Removal and Replacement 221Tray 1 Separation PadFigure 6-55 Tray 1 Separation Pad1 Open the Tray 1 door, and remove the Feed Roller

C4085-91087 xxiiiList of TablesTable 1-1. Common features between the HP LaserJet 8000, HP LaserJet 8000 N, HP LaserJet 8000 DN, and HP Mopier 240

222 Chapter 6 Removal and Replacement C4085-91087Tray 2 and 3 Pickup, Feed, and Separation RollersFigure 6-56 Tray 2 and 3, Pickup, Feed, and Separati

C4085-91087 Engine Removal and Replacement 223Paper Input Unit Sensor (PS2)1 Remove the following components in the order listed:• Toner Cartridge• Tr

224 Chapter 6 Removal and Replacement C4085-91087Figure 6-57 Paper Input Unit Sensor (PS2)3 Release the retaining tabs (figure 6-57, callout 1) on the

C4085-91087 Engine Removal and Replacement 225Registration Sensor (PS1)1 Remove the following components in the order listed:• Toner Cartridge• Trays

226 Chapter 6 Removal and Replacement C4085-91087 Figure 6-58 Registration Sensor (PS1)3 Release the retaining tabs (figure 6-58, callout 1) on the ri

C4085-91087 Engine Removal and Replacement 227Face-up Solenoid Assembly (SL3)Figure 6-59 Face-up Solenoid Assembly, SL31 Remove the top cover (see fig

228 Chapter 6 Removal and Replacement C4085-91087Transfer Roller AssemblyFigure 6-60 Transfer Roller AssemblyCAUTION Handle the Transfer Roller from t

C4085-91087 Engine Removal and Replacement 229To Reinstall:1 Place the right end of the shaft into its retaining cavity.2 Hold the Transfer Roller wip

230 Chapter 6 Removal and Replacement C4085-91087Tray 2 and 3 AssembliesNote The paper trays are mechanically aligned to the printer chassis at the fa

C4085-91087 2000-sheet Input Tray Removal and Replacement 2312000-sheet Input Tray Removal and ReplacementWARNING! For the procedures in this section,

xxiv C4085-91087Table 7-4. Fans - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 389Table 7-5. General Pap

232 Chapter 6 Removal and Replacement C4085-91087OrientationFigure 6-61 shows the orientation of the 2000-sheet Input Tray as it is referred to in t

C4085-91087 2000-sheet Input Tray Removal and Replacement 233Front CoverFigure 6-62 2000-sheet Input Tray Front Cover1 Open the paper tray on the 2000

234 Chapter 6 Removal and Replacement C4085-91087Back Cover1 Make sure that the power cord for the 2000-sheet Input Tray is unplugged from the power

C4085-91087 2000-sheet Input Tray Removal and Replacement 235Left Cover1 Unplug the power cord and the C-link interface cables from the 2000-sheet Inp

236 Chapter 6 Removal and Replacement C4085-91087Right Cover1 Remove the Vertical Transfer Unit (VTU) from the 2000-sheet Input Tray (see figure 6-7

C4085-91087 2000-sheet Input Tray Removal and Replacement 237Main Drive Assembly1 Remove the Back Cover from the 2000-sheet Input Tray (see figure 6-6

238 Chapter 6 Removal and Replacement C4085-91087To Reinstall:1 Reroute the cable through the cable clips (figure 6-66, callout 2) and reconnect the

C4085-91087 2000-sheet Input Tray Removal and Replacement 239Paper Tray1 Open the paper tray on the 2000-sheet Input Tray and remove any unused paper.

240 Chapter 6 Removal and Replacement C4085-91087Main Cable Harness1 Remove the Back Cover from the 2000-sheet Input Tray (see figure 6-63).2 Locate

C4085-91087 2000-sheet Input Tray Removal and Replacement 241Figure 6-68 2000-sheet Input Tray Main Cable Harness

C4085-91087 List of Tables xxvTable 8-9. 2 x 500-sheet Input Tray Internal Components- - - - - - - - - - 529Table 8-10. 7-bin Tabletop Mailbo

242 Chapter 6 Removal and Replacement C4085-91087Controller PCA1 Remove the Back and Left Covers from the 2000-sheet Input Tray (see figure 6-63 and

C4085-91087 2000-sheet Input Tray Removal and Replacement 243To Reinstall:1 Seat the Controller PCA firmly onto the plastic retaining posts that secur

244 Chapter 6 Removal and Replacement C4085-91087Front LED PCA Assembly1 Open the paper tray on the 2000-sheet Input Tray halfway to the stops.2 On

C4085-91087 2000-sheet Input Tray Removal and Replacement 245Figure 6-70 2000-sheet Input Tray Front LED PCA

246 Chapter 6 Removal and Replacement C4085-91087Pickup Assembly1 Remove the Vertical Transfer Unit (VTU) from the 2000-sheet Input Tray (see figure

C4085-91087 2000-sheet Input Tray Removal and Replacement 247To Reinstall:1 Make sure that the paper tray is open to easily slide the Pickup Assembly

248 Chapter 6 Removal and Replacement C4085-91087Power Supply1 Remove the Back and Left Covers from the 2000-sheet Input Tray (see figure 6-63 and f

C4085-91087 2000-sheet Input Tray Removal and Replacement 249To Reinstall:1 Carefully align the locating tabs so that they are positioned correctly.2

250 Chapter 6 Removal and Replacement C4085-91087Pickup, Feed, and Separation RollersThree rollers in the 2000-sheet Input Tray pick up paper and fe

C4085-91087 2000-sheet Input Tray Removal and Replacement 251Figure 6-73 2000-sheet Input Tray Rollers: Pickup, Feed, and SeparationTo Remove the Feed

xxvi C4085-91087

252 Chapter 6 Removal and Replacement C4085-91087To Reinstall:1 If all three rollers were removed, reinstall the Pickup Roller first (callout 1).2 W

C4085-91087 2000-sheet Input Tray Removal and Replacement 253Paper Quantity Switch Assembly1 Remove the Back Cover from the 2000-sheet Input Tray (see

254 Chapter 6 Removal and Replacement C4085-91087Figure 6-74 2000-sheet Input Tray Paper Size and Paper Quantity Switch Figure 6-75 2000-sheet Input

C4085-91087 2000-sheet Input Tray Removal and Replacement 255Vertical Transfer Unit (VTU)Figure 6-76 2000-sheet Input Tray Vertical Transfer Unit (VTU

256 Chapter 6 Removal and Replacement C4085-91087To Reinstall:WARNING! Release the plastic cams only after tightening the screws that secure the VTU

C4085-91087 2000-sheet Input Tray Removal and Replacement 257Tension Springs1 Remove the Left Cover of the 2000-sheet Input Tray (see figure 6-64 on p

258 Chapter 6 Removal and Replacement C4085-91087Locating Pins1 Remove the printer from the 2000-sheet Input Tray.Figure 6-78 2000-sheet Input Tray

C4085-91087 2000-sheet Input Tray Removal and Replacement 259Casters and Stabilizing Feet1 Remove the printer from the 2000-sheet Input Tray.Figure 6-

260 Chapter 6 Removal and Replacement C4085-91087Adjustable Foot 1 Remove the printer from the 2000-sheet Input Tray.Figure 6-80 2000-sheet Input Tr

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 2612 x 500-sheet Input Tray Removal and ReplacementNote Reinstallation is generally the r

C4085-91087 Chapter Contents 11Product Information Chapter ContentsPrinter Features - - - - - - - - - - - - - - - - - - - - - -

262 Chapter 6 Removal and Replacement C4085-91087Orientation of the 2 x 500-sheet Input TrayFigure 6-81 Orientation of the 2 x 500-sheet Input TrayT

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 263Back CoverFigure 6-82 Back Cover1 Remove 4 screws (callout 1).2 Release and pull out t

264 Chapter 6 Removal and Replacement C4085-91087Left CoverFigure 6-83 Left Cover1 Unplug the power cord and C-link interface cables, and remove the

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 265Vertical Transfer Unit (VTU)Figure 6-84 Vertical Transfer Unit (VTU) (1 of 3)1 Open th

266 Chapter 6 Removal and Replacement C4085-91087Figure 6-85 Vertical Transfer Unit (VTU) (2 of 3)4 Remove the 2 screws that secure the VTU to the c

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 267To reinstall:Figure 6-86 Vertical Transfer Unit (VTU) (3 of 3)WARNING! To avoid injury

268 Chapter 6 Removal and Replacement C4085-91087Right CoverFigure 6-87 Right Cover (1 of 3)1 Remove the Back Cover (page 263) and the Vertical Tran

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 269Figure 6-88 Right Cover (2 of 3)3 Release the left side of the Right Cover from the ta

270 Chapter 6 Removal and Replacement C4085-91087Figure 6-89 Right Cover (3 of 3)4 Release the tab from the right side of the Right Cover as shown i

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 271Front Top CoverFigure 6-90 Front Top Cover (1 of 3)1 Remove the printer from the 2 x 5

Service ManualHP LaserJet 8000 (C4085A)HP LaserJet 8000 N (C4086A)HP LaserJet 8000 DN (C4087A)HP LaserJet Mopier 240 (C4228A)

2 Chapter 1 Product Information C4085-91087Printer Features Table 1-1. Common features between the HP LaserJet 8000, HP LaserJet 8000 N, HP LaserJet 8

272 Chapter 6 Removal and Replacement C4085-91087Figure 6-91 Front Top Cover (2 of 3)4 From inside of the unit release the central tabs, as shown in

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 273Figure 6-92 Front Top Cover (3 of 3)5 Push the front top cover to the left to release

274 Chapter 6 Removal and Replacement C4085-91087Trays 4 and 5Figure 6-93 Trays 4 and 5 (1 of 2)1 Open the tray and pull it out to the stop (callout

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 275Figure 6-94 Trays 4 and 5 (2 of 2)To Reinstall:1 Tip the end of the tray downward. Ali

276 Chapter 6 Removal and Replacement C4085-91087Pickup AssemblyFigure 6-95 Pickup Assembly (1 of 2)1 Remove trays 4 and 5 (page 274), the Right Cov

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 277Figure 6-96 Pickup Assembly (2 of 2)4 Carefully slide the Pickup Assembly straight out

278 Chapter 6 Removal and Replacement C4085-91087Paper Deck Drive AssemblyFigure 6-97 Paper Deck Drive Assembly (1 of 2)1 Remove the Back Cover (pag

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 279Figure 6-98 Paper Deck Drive Assembly (2 of 2)4 Reach into the right side of the input

280 Chapter 6 Removal and Replacement C4085-91087Pickup, Feed, and Separation RollersThere are three rollers in this assembly. The upper forward rol

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 281Controller PCAFigure 6-100 2 x 500-sheet Input Tray Controller PCA1 Remove the Back Co

C4085-91087 Printer Features 31. Printer memory is optimized with Memory Enhancement technology (MEt). DIMMs available for use include 4, 8, 16, and 6

282 Chapter 6 Removal and Replacement C4085-91087Tray-Size Sensing PCAFigure 6-101 Tray-Size Sensing PCA (1 of 2)1 Remove the Back Cover (page 263)

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 283Figure 6-102 Tray-Size Sensing PCA (2 of 2)4 To remove the size-sensing PCA, unplug th

284 Chapter 6 Removal and Replacement C4085-91087Power SupplyFigure 6-103 Power Supply1 Remove the Back Cover (page 263) and the Left Cover (page 26

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 285Main CableFigure 6-104 Main Cable (1 of 2)1 Remove the Back Cover (page 263), the Left

286 Chapter 6 Removal and Replacement C4085-91087Figure 6-105 Main Cable (2 of 2)3 Unplug 4 connectors from the controller PCA (callout 1), 3 from t

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 287Storage Paper TrayFigure 6-106 Storage Paper Tray1 Remove Trays 4 and 5 (page 274).2 O

288 Chapter 6 Removal and Replacement C4085-91087Front Door (Storage Area)Figure 6-107 Front Door (Storage Area)1 Remove the storage tray (page 287)

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 289CastersFigure 6-108 Casters1 Remove the printer from the input device (page 155).2 Pla

290 Chapter 6 Removal and Replacement C4085-91087Foot Tip and Adjustable Foot Tip (Stabilizing Feet)Figure 6-109 Foot Tip and Adjustable Foot Tip1 R

C4085-91087 2 x 500-sheet Input Tray Removal and Replacement 291Locating PinsFigure 6-110 Locating Pins1 Remove the printer from the input device (pag

4 Chapter 1 Product Information C4085-91087Paper Capacities and Sizes Table 1-3. Paper Capacities and SizesTray or Bin Capacity Paper WeightTray 1(mul

292 Chapter 6 Removal and Replacement C4085-91087Front LED PCAFigure 6-111 Front LED PCA1 Remove the printer from the input device.2 Remove the Fron

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 2937-bin Tabletop Mailbox Removal and Replacement Note Reinstallation is generally the rev

294 Chapter 6 Removal and Replacement C4085-91087Orientation of the 7-bin Tabletop MailboxFigure 6-112 Orientation of the 7-bin Tabletop Mailbox Not

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 295Front CoverFigure 6-113 Front cover (1 of 3)1 Remove 2 screws (callout 1).

296 Chapter 6 Removal and Replacement C4085-91087Figure 6-114 Front cover (2 of 3)2 Loosen the right side of the Front Cover and pull it toward you

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 297Figure 6-115 Front cover (3 of 3)CAUTION Be careful not to damage the handle as you remo

298 Chapter 6 Removal and Replacement C4085-91087Back CoverFigure 6-116 Back cover (1 of 2)1 Remove 2 screws (callout 1).

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 299Figure 6-117 Back cover (2 of 2)2 Pull the Back Cover toward you to remove it. Release c

300 Chapter 6 Removal and Replacement C4085-91087Top CoverFigure 6-118 Top cover (1 of 4)1 Remove the Front Cover (page 295) and the Back Cover (pag

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 301Figure 6-119 Top cover (2 of 4)4 Remove the screw from the Face-up Bin-Full PCA (callout

C4085-91087 Paper Capacities and Sizes 55-bin Mailbox with Stapler and 8-bin Mailbox up to 250 sheets per binPaper sizes: Letter, ISO A4, Legal, JIS B

302 Chapter 6 Removal and Replacement C4085-91087Figure 6-120 Top cover (3 of 4)5 To take out the flag, push down the plastic shaft carefully, as sh

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 303Figure 6-121 Top cover (4 of 4)6 To remove the Top Cover lift the right side first as sh

304 Chapter 6 Removal and Replacement C4085-91087Controller PCAFigure 6-122 Mailbox Controller PCA 1 Remove the Back Cover (page 298).2 Unplug 8 con

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 305Power SupplyFigure 6-123 Mailbox Power Supply1 Remove the Back Cover (page 298).2 Releas

306 Chapter 6 Removal and Replacement C4085-91087Right Door Assembly (Paper Path Cover)Figure 6-124 Right Door Assembly (Paper Path Cover) (1 of 5)1

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 307Figure 6-125 Right Door Assembly (Paper Path Cover) (2 of 5)1 Grasp the green handle and

308 Chapter 6 Removal and Replacement C4085-91087Figure 6-127 Right Door Assembly (Paper Path Cover) (3 of 5)2 Remove the screw of the holding arm (

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 309Figure 6-128 Right Door Assembly (Paper Path Cover) (4 of 5)3 Release the plastic pin on

310 Chapter 6 Removal and Replacement C4085-91087Face-down BinsFigure 6-129 Face-down Bins (1 of 3)Note Bins 1, 3, and 5 each have one rear roller.

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 311Figure 6-130 Face-down Bins (2 of 3)4 From the back side of the device, push the bin as

6 Chapter 1 Product Information C4085-91087Identification Model and Serial NumbersThe model and serial numbers are listed on identification labels loc

312 Chapter 6 Removal and Replacement C4085-91087Figure 6-131 Face-down Bins (3 of 3)To Reinstall:1 Guide the empty bin sensor in the slot at the ba

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 313Empty Bin Sensor PCAFigure 6-132 Empty Bin Sensor PCA (1 of 2)1 Remove the Back Cover (p

314 Chapter 6 Removal and Replacement C4085-91087Figure 6-133 Empty Bin Sensor PCA (2 of 2)4 Lift up the Empty Bin Sensor PCA to free it from the se

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 315Full Bin and Interlock Sensor PCAFigure 6-134 Full Bin and Interlock Sensor PCA (1 of 2)

316 Chapter 6 Removal and Replacement C4085-91087Figure 6-135 Full Bin and Interlock Sensor PCA (2 of 2)4 Rotate the PCA toward the right, and then

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 317LED PCAFigure 6-136 LED PCA1 Remove the Front Cover (page 295).2 Remove 1 screw (callout

318 Chapter 6 Removal and Replacement C4085-91087Face-up Sensors PCAFigure 6-137 Face-up Sensors PCA1 Remove the Front Cover (page 295).2 Remove 1 s

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 319Reversing Mechanism MotorFigure 6-138 Reversing Mechanism Motor (1 of 2)1 Remove the Bac

320 Chapter 6 Removal and Replacement C4085-91087Figure 6-139 Reversing Mechanism Motor (2 of 2)3 Unplug the motor's connector (callout 1).4 Re

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 321Face-up/Diverter Assembly (Flipper)Figure 6-140 Face-up/Diverter Assembly (Flipper) (1 o

C4085-91087 Specifications 7Specifications This section contains information on physical and electrical characteristics of the printer. For informatio

322 Chapter 6 Removal and Replacement C4085-91087Figure 6-141 Face-up/Diverter Assembly (Flipper) (2 of 3)4 Using pliers, release the springs at eac

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 323Figure 6-142 Face-up/Diverter Assembly (Flipper) (3 of 3)5 Rotate the assembly upward, a

324 Chapter 6 Removal and Replacement C4085-91087Short Tray 7Figure 6-143 Short Tray 71 Place the 7-bin Tabletop Mailbox on its side as shown.2 Remo

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 325Solenoid Reversing MechanismFigure 6-144 Solenoid Reversing Mechanism1 Remove the Back C

326 Chapter 6 Removal and Replacement C4085-91087Flipper Solenoid Figure 6-145 Flipper Solenoid 1 Remove the Front Cover (page 295).2 Unplug the cab

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 327HandleFigure 6-146 7-bin Tabletop Mailbox Handle 1 Release the left end of the spring (c

328 Chapter 6 Removal and Replacement C4085-91087Latching MechanismFigure 6-147 Latching Mechanism1 Remove the 7-bin Tabletop Mailbox Handle (page 3

C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 329Cover LatchFigure 6-148 Cover Latch1 Remove the 7-bin Tabletop Mailbox Handle (figure 6-

330 Chapter 6 Removal and Replacement C4085-910878-bin Mailbox Removal and ReplacementWARNING! For the procedures in this section, the printer and a

C4085-91087 8-bin Mailbox Removal and Replacement 331OrientationFigure 6-149 shows the orientation of the 8-bin Mailbox as it is referred to in this s

8 Chapter 1 Product Information C4085-91087Figure 1-2 Orientation for Dimensions of Paper-handling DevicesTable 1-5. Dimensions of Output DevicesItem

332 Chapter 6 Removal and Replacement C4085-91087Front and Back CoversNote The procedures for removing the Front and Back Covers are the same. Howev

C4085-91087 8-bin Mailbox Removal and Replacement 333Top Cover1 Remove the Front and Back Covers from the 8-bin Mailbox (see Figure 6-150).Figure 6-15

334 Chapter 6 Removal and Replacement C4085-91087Power SupplyFigure 6-152 8-bin Mailbox Power Supply1 Locate the cable that runs from the 8-bin Mail

C4085-91087 8-bin Mailbox Removal and Replacement 335Paper Bins and Blind CoverThe procedure for removing a paper bin and the Blind Cover is the same.

336 Chapter 6 Removal and Replacement C4085-91087Flipper Assembly1 Remove all the paper bins and the Blind Cover from the 8-bin Mailbox (see Figure

C4085-91087 8-bin Mailbox Removal and Replacement 337Figure 6-155 8-bin Mailbox Flipper Assembly (2 of 3)4 Hold down the Jam Access Door while unplugg

338 Chapter 6 Removal and Replacement C4085-91087Figure 6-156 8-bin Mailbox Flipper Assembly (3 of 3)7 Hold down the Jam Access Door, and pull out t

C4085-91087 8-bin Mailbox Removal and Replacement 339Delivery Head Motor1 Remove the Back Cover from the 8-bin Mailbox (see Figure 6-150).Figure 6-157

340 Chapter 6 Removal and Replacement C4085-91087Transport Belt Motor1 Remove the Back Cover from the 8-bin Mailbox (see Figure 6-150).2 Remove all

C4085-91087 8-bin Mailbox Removal and Replacement 341To Reinstall:1 Reroute the cable on the Transport Belt Motor behind the flat cable, and connect i

C4085-91087 Specifications 91. Operating current requirements.Table 1-6. Electrical Specifications Volts Frequency Amps1Watts (average)Printer120 Vac

342 Chapter 6 Removal and Replacement C4085-91087Input Paper Guide1 Remove the 8-bin Mailbox from the printer.2 Remove the Face-up Bin and the Blind

C4085-91087 8-bin Mailbox Removal and Replacement 343Figure 6-160 8-bin Mailbox Input Paper Guide (2 of 2)3 Hold down the Jam Access Door while unplug

344 Chapter 6 Removal and Replacement C4085-91087Metal Tape and Housing Assembly1 Remove all the paper bins and the Blind Cover from the 8-bin Mailb

C4085-91087 8-bin Mailbox Removal and Replacement 345Figure 6-162 8-bin Mailbox Metal Tape and Housing Assembly (2 of 2)5 Using a flat-blade screwdriv

346 Chapter 6 Removal and Replacement C4085-91087Controller PCA1 Remove the 8-bin Mailbox from the printer.Figure 6-163 8-bin Mailbox Controller PCA

C4085-91087 8-bin Mailbox Removal and Replacement 347Figure 6-164 8-bin Mailbox Controller PCA (2 of 2)9 Disconnect the 8 cables from the Controller P

348 Chapter 6 Removal and Replacement C4085-91087Anticurl Strings1 Remove the Back Cover, all the paper bins, and the Blind Cover from the 8-bin Mai

C4085-91087 8-bin Mailbox Removal and Replacement 349Figure 6-166 8-bin Mailbox Anticurl Strings (2 of 2)5 Release the upper ends of the Anticurl Stri

350 Chapter 6 Removal and Replacement C4085-91087Delivery Head Assembly1 Remove the Back Cover from the 8-bin Mailbox (see Figure 6-150).2 Remove al

C4085-91087 8-bin Mailbox Removal and Replacement 351Figure 6-168 8-bin Mailbox Delivery Head Assembly (2 of 4)4 At the lower-left side of the 8-bin M

10 Chapter 1 Product Information C4085-910871. Printer System includes the 2000-sheet Input Tray (Tray 4) or 2 x 500-sheet Input Tray (Trays 4 and 5),

352 Chapter 6 Removal and Replacement C4085-91087Figure 6-169 8-bin Mailbox Delivery Head Assembly (3 of 4)6 On the back side of the 8-bin Mailbox,

C4085-91087 8-bin Mailbox Removal and Replacement 353Figure 6-170 8-bin Mailbox Delivery Head Assembly (4 of 4)9 Rotate the Delivery Head Assembly clo

354 Chapter 6 Removal and Replacement C4085-91087To Reinstall:1 Replace the Anticurl Strings into the pulleys on the ends of the Delivery Head Assem

C4085-91087 8-bin Mailbox Removal and Replacement 355Interlock Switch1 Remove the Back Cover from the 8-bin Mailbox (see Figure 6-150).Figure 6-171 8-

356 Chapter 6 Removal and Replacement C4085-91087Diagnostic LED PCAFigure 6-172 8-bin Mailbox Diagnostic LED PCA (1 of 2)1 Locate the Diagnostic LED

C4085-91087 8-bin Mailbox Removal and Replacement 357Figure 6-173 8-bin Mailbox Diagnostic LED PCA (2 of 2)3 Disconnect the 2 flat cables from the Dia

358 Chapter 6 Removal and Replacement C4085-91087User Status LED PCAFigure 6-174 8-bin Mailbox User Status LED PCA (1 of 2)1 Locate the User Status

C4085-91087 8-bin Mailbox Removal and Replacement 359Figure 6-175 8-bin Mailbox User Status LED PCA (2 of 2)3 Disconnect the cable from the User Statu

360 Chapter 6 Removal and Replacement C4085-91087Adjustable and Fixed CastersNote The procedures for removing the Adjustable and Fixed Casters are t

C4085-91087 8-bin Mailbox Removal and Replacement 361Attachment Assembly1 Disconnect the power cable and the C-link cable from the 8-bin Mailbox Contr

C4085-91087 Media Selection Guidelines 11Media Selection Guidelines Note More detailed specifications are in the HP LaserJet 8000, 8000 N, 8000 DN, an

362 Chapter 6 Removal and Replacement C4085-91087Stapler Assembly Removal and ReplacementNote Reinstallation is generally the reverse of the removal

C4085-91087 Stapler Assembly Removal and Replacement 363Mailbox with Stapler, Stapler Removal or InstallationFigure 6-178 Mailbox with Stapler, Staple

364 Chapter 6 Removal and Replacement C4085-910873 Disconnect the C-link cable connecting the mailbox to the stapler. See figure 6-179.Figure 6-179

C4085-91087 Stapler Assembly Removal and Replacement 365Back PlateFigure 6-180 Back Plate (1 of 2)1 Remove the Stapler Assembly (see figure 6-178).2 R

366 Chapter 6 Removal and Replacement C4085-91087Figure 6-181 Back Plate (2 of 2)3 Remove the Torx screw joining the Back Plate with the Stapler (se

C4085-91087 Stapler Assembly Removal and Replacement 367Stapler Controller PCAFigure 6-182 Stapler Controller PCA (1 of 3)1 Remove the Stapler Assembl

368 Chapter 6 Removal and Replacement C4085-91087Figure 6-183 Stapler Controller PCA (2 of 3)4 Unplug the cables that are connected to the PCA. Iden

C4085-91087 Stapler Assembly Removal and Replacement 369Figure 6-184 Stapler Controller PCA (3 of 3)5 The board is supported by a hooked tab at the to

370 Chapter 6 Removal and Replacement C4085-91087Top Cover AssemblyFigure 6-185 Top Cover Assembly 1 Remove the Stapler Assembly (see figure 6-178 o

C4085-91087 Stapler Assembly Removal and Replacement 371Stapler Bed AssemblyFigure 6-186 Stapler Bed Assembly1 Remove the Stapler Assembly (see figure

Hewlett-Packard Company11311 Chinden BoulevardBoise, Idaho 83714 U.S.A. © Copyright Hewlett-Packard Company 1998All Rights Reserved. Reproduction, ada

12 Chapter 1 Product Information C4085-91087Adhesive Labels Use the following guidelines when selecting labels: CAUTION Tray 1 is required for printin

372 Chapter 6 Removal and Replacement C4085-91087To Reinstall:Replace the Stapler Bed. Replace the Stapler Controller. Replace the actuator for the

C4085-91087 Stapler Assembly Removal and Replacement 373HingesFigure 6-187 Hinges1 Remove the Stapler Assembly (see figure 6-178 on page 363).2 Remove

374 Chapter 6 Removal and Replacement C4085-91087

C4085-91087 Chapter contents 3757Troubleshooting Chapter contentsTroubleshooting Process - - - - - - - - - - - - - - - - - 376Troubl

376 Chapter 7 Troubleshooting C4085-91087Troubleshooting ProcessThe troubleshooting process is a systematic approach that addresses the major problems

C4085-91087 Troubleshooting Process 377“Printer Messages” on page 401Does the control panel display an error message?Contains a list of control panel

378 Chapter 7 Troubleshooting C4085-91087Printer and Paper-Handling Troubleshooting ProcessFigure 7-1 Printer and Paper-Handling Troubleshooting Proce

C4085-91087 Troubleshooting Process 379Figure 7-2 Printer and Paper-Handling Troubleshooting Process (2 of 2)

380 Chapter 7 Troubleshooting C4085-91087Troubleshooting the Printing SystemPreliminary Operating ChecksPrior to troubleshooting a specific printer pr

C4085-91087 General Troubleshooting Information 381General Troubleshooting Information Miscellaneous Problems and Solutions The following lists sympto

C4085-91087 Media Selection Guidelines 13Transparencies CAUTION Tray 1 is required for printing transparencies. Print transparencies to the left outpu

382 Chapter 7 Troubleshooting C4085-91087Will not feed from Tray x when printing from application; paper path test works fine.Verify the correct paper

C4085-91087 General Troubleshooting Information 3833 Run a paper path test from Tray 4 or 5. If the test is successful, the paper size detection switc

384 Chapter 7 Troubleshooting C4085-91087Wrinkling Envelopes1 Place the Fusing Levers in up position and retry the envelopes.2 Try new media. Make sur

C4085-91087 General Troubleshooting Information 385From the Control PanelNote To set the paper type for Tray 1, set TRAY 1 MODE=CASSETTE from the Pape

386 Chapter 7 Troubleshooting C4085-91087Paper CurlPaper curl is inherent to the laser printing processes, as it occurs when paper is subjected to hea

C4085-91087 Power On 387Power OnIt is important to have the printer's Control Panel functional as soon as possible in the troubleshooting process

388 Chapter 7 Troubleshooting C4085-91087 YESIf the fans are working but the printer's Control Panel is

C4085-91087 Power On 389 Figure 7-3 Fan Location and AirflowNote Control Panel numbers do not correspond to fan numbers (i.e., a fan error ending in

390 Chapter 7 Troubleshooting C4085-91087Engine TestThe engine test verifies that the print engine is functioning correctly. This test is very useful

C4085-91087 Display 391DisplayThe Control Panel should display READY, OFFLINE, or POWERSAVE ON. For information about errors displayed, access the Eve

14 Chapter 1 Product Information C4085-91087Product Overview External View of HP LaserJet 8000/N/DN Engine Figure 1-3 HP LaserJet 8000/N/DN Engine - F

392 Chapter 7 Troubleshooting C4085-91087Figure 7-5 Sample Event LogMost recent error

C4085-91087 Display 393Print the Event LogThe printer’s internal Event Log stores the most recent errors and can be printed at any time. To print the

394 Chapter 7 Troubleshooting C4085-91087Interpret the Event LogSee figure 7-5 on page 392 for a sample Event Log.The errors on the control panel and

C4085-91087 General Paper Path Troubleshooting 395General Paper Path TroubleshootingPaper jams occur in the printer when paper either does not reach o

396 Chapter 7 Troubleshooting C4085-91087Paper JamsPaper jams occur most often when:●Paper trays are not correctly loaded. Make sure the paper is load

C4085-91087 General Paper Path Troubleshooting 397If a paper jam occurs, the printer will display a 13.x PAPER JAM message on the control panel. See “

398 Chapter 7 Troubleshooting C4085-91087Paper Path Test Using the error trend information from “Display” on page 391, you can verify a specific print

C4085-91087 General Paper Path Troubleshooting 399 Figure 7-7 Paper Path Test Source and Output SelectionCustomer Print Job Ask the customer to send a

400 Chapter 7 Troubleshooting C4085-91087Clearing Paper JamsNote Open and close all printer covers to clear the paper jam message. After removing a sh

C4085-91087 Printer Messages 401Printer MessagesControl Panel Messages and ErrorsBe sure to read the exact text of the control panel message, includin

C4085-91087 Product Overview 1510 Tray 1 Pickup Roller11 Tray 212 Tray 3 13 On/Off Switch14 Front Access DoorNot shown:●Duplexer (internal)●5-bin Mail

402 Chapter 7 Troubleshooting C4085-91087Note Be sure to print a configuration page to properly identify the input or output device configured. Notice

C4085-91087 Printer Messages 403Printer Message TablesPrinter messages are grouped according to the device generating the error. Within the groupings

404 Chapter 7 Troubleshooting C4085-91087Engine Error MessagesTable 7-6. Engine Error MessagesControl PanelMessageEvent Log ErrorMessageDescription Re

C4085-91087 Printer Messages 40513.3 PAPER JAM CHECK RIGHT DOORalternates withTHEN OPEN AND CLOSE TOP COVER13.3 XX Paper delay jam. Paper did not reac

406 Chapter 7 Troubleshooting C4085-9108721 PAGE TOOCOMPLEXalternates withPRESS GO TOCONTINUEError The data (dense text, rules, raster or vector graph

C4085-91087 Printer Messages 40740 BAD SERIAL TRANSMISSIONalternates withPRESS GO TOCONTINUEError The printer encountered an error while transferring

408 Chapter 7 Troubleshooting C4085-9108750.x FUSER ERRORCritical Error A fuser error has occurred.X Description1 Low Fuser temperature.2 Fuser warm u

C4085-91087 Printer Messages 40953.xy.zz PRINTER ERRORCritical Error There is a problem with the printer’s memory. The DIMM that caused the error will

410 Chapter 7 Troubleshooting C4085-9108755.xPRINTER ERRORalternates with PRESS GO TO CONTINUEError A printer error has occurred.X Description0 NO_RES

C4085-91087 Printer Messages 41162.xPRINTER ERRORCritical Error There is a problem with the printer’s memory. The x value refers to the location of th

16 Chapter 1 Product Information C4085-91087External View of HP Mopier 240Figure 1-4 HP Mopier 240 - Front and Right Side View with Tray 1 Open1 Left

412 Chapter 7 Troubleshooting C4085-9108779.xxxxPRINTER ERRORCritical Error The printer detected an error. The numbers (xxxx) indicate the specific ty

C4085-91087 Printer Messages 413CHECK OUTPUT DEVICEalternates withCLOSE OUTPUT DELIVERY PATHError The paper path between the printer and the external

414 Chapter 7 Troubleshooting C4085-91087TRAY X EMPTYWarning The paper tray is empty. Paper is sensed in the tray by black plastic flags and photosens

C4085-91087 Printer Messages 415TRAY xx LOAD [TYPE] [SIZE]Error One of the following occurred:• There is no paper loaded in the specified tray, or the

416 Chapter 7 Troubleshooting C4085-910872000-sheet Input Tray Error MessagesTable 7-7. 2000-sheet Input Tray Error MessagesControl PanelMessageEvent

C4085-91087 Printer Messages 41713.11 PAPER JAM IN INPUT DEVICE13.11 11 Timeout at Entry sensor (PS31) on the 2000-sheet Input Tray 1. Open the Vertic

418 Chapter 7 Troubleshooting C4085-9108766.11.01 INPUT DEVICE FAILURE66.11.01 Lifting motor malfunction. 1. Make sure there are no objects or fragmen

C4085-91087 Printer Messages 41966.11.03 INPUT DEVICE FAILURE66.11.03 Lifting and feed motor malfunction. 1. Make sure there are no objects or fragmen

420 Chapter 7 Troubleshooting C4085-910872 x 500-sheet Input Tray Error MessagesTable 7-8. 2 x 500-sheet Input Tray Error MessagesControl PanelMessage

C4085-91087 Printer Messages 421Input Device Condition 11.0465.11.04 Lifter malfunction. 1. Make sure that the lifting plate lifts up freely by hand.2

C4085-91087 Product Overview 1711 Tray 212 2000-sheet Input Tray (Tray 4)(not shown) 2 x 500-sheet Input Tray (Trays 4 & 5)13 Tray 314 5-bin Mailb

422 Chapter 7 Troubleshooting C4085-9108713.11 PAPER JAM IN INPUT DEVICE13.11 11 Page did not arrive at entry sensor. 1. Open the Vertical Transfer Un

C4085-91087 Printer Messages 423Envelope Feeder Error MessagesTable 7-9. Envelope Feeder Error MessagesControl PanelMessageEvent Log ErrorMessageDescr

424 Chapter 7 Troubleshooting C4085-910877-bin Tabletop Mailbox Error MessagesTable 7-10. 7-bin Tabletop Mailbox Error MessagesControl PanelMessageEve

C4085-91087 Printer Messages 42513.12 or 13.22 PAPER JAM IN OUTPUT DEVICE 13.12 12 or 13.22 12Page did not reach the Paper Path Sensor 1 (P

426 Chapter 7 Troubleshooting C4085-9108713.12 or 13.22 PAPER JAM IN OUTPUT DEVICE 13.12 22 or 13.22 22Page stays at Paper Path Sensor 1 (PPS1).1. Ope

C4085-91087 Printer Messages 42713.12 or 13.22 PAPER JAM IN OUTPUT DEVICE 13.12 32 or 13.22 32Page found at Paper Path Sensor 1 (PPS1) during power on

428 Chapter 7 Troubleshooting C4085-9108766.12.32 or 66.22.32 OUTPUT DEVICE FAILURE 66.12 32 or 66.22.32Solenoid Malfunction. 1. Check that the 2 pa

C4085-91087 Printer Messages 4298-bin Mailbox Error MessagesTable 7-11. 8-bin Mailbox Error MessagesControl PanelMessageEvent Log ErrorMessageDescript

430 Chapter 7 Troubleshooting C4085-91087OUTPUT DEVICE CONDITION 22.2 or 12.2 65.22.02 or65.12.02Elevator Problem (Home not Found). 1. Check that the

C4085-91087 Printer Messages 43113.22 or 13.12 PAPER JAM IN OUTPUT DEVICE13.22 01or 13.12 01Flipper Entry Sensor (PSEntry) Jam. 1. Open the Jam Access

18 Chapter 1 Product Information C4085-91087Formatter Assemblies Figure 1-5 Rear and Left Side View1 Formatter Pan Assembly2 Parallel IEEE 1284 Inter

432 Chapter 7 Troubleshooting C4085-9108713.22 or 13.12 PAPER JAM IN OUTPUT DEVICE13.22 04or13.12 04Jam in Head Assembly at (PSExit 1). 1. Check for j

C4085-91087 Printer Messages 43313.22 or 13.12 PAPER JAM IN OUTPUT DEVICE13.22 06or13.12 06Elevator (Head Assembly) Jam when scanning and looking for

434 Chapter 7 Troubleshooting C4085-9108766.12.zz or 66.22.zz OUTPUT DEVICE FAILURE66.12.zz or66.12.zzMBM C-link is not responding. 1. Check for prope

C4085-91087 Printer Messages 435Stapler Error MessagesTable 7-12. Stapler Error MessagesControl PanelMessageEvent Log ErrorMessageDescription Recommen

436 Chapter 7 Troubleshooting C4085-91087FINISHER OUT OF BINDING AGENTError The external paper handling finisher device is out of binding agent.Refill

C4085-91087 Printer Messages 43713.23 or 13.33 PAPER JAM IN OUTPUT DEVICE13.33 0D Retainer Jam. • Remove jammed media.• Perform a device reset cycle b

438 Chapter 7 Troubleshooting C4085-91087Duplexer Error MessagesTable 7-13. Duplexer Error MessagesControl PanelMessageEvent Log ErrorMessageDescripti

C4085-91087 Printer Messages 439Paper Handling Controller Error MessagesTable 7-14. Paper Handling Controller Error MessagesControl PanelMessageEvent

440 Chapter 7 Troubleshooting C4085-91087Self - Diagnostics on Paper-handling Devices2000-sheet Input Tray Stand-alone DiagnosticsThe 2000-sheet Input

C4085-91087 Self - Diagnostics on Paper-handling Devices 441CAUTION If the 2000-sheet Input Tray is sitting underneath the printer, paper jams may occ

C4085-91087 Accessories and Options 19Accessories and Options The accessories and optional equipment for the HP LaserJet 8000, 8000 N, and 8000 DN pri

442 Chapter 7 Troubleshooting C4085-910872000-sheet Input Tray Sensor TestThis test manually activates the sensors on the 2000-sheet Input Tray to tes

C4085-91087 Self - Diagnostics on Paper-handling Devices 4432000-sheet Input Tray LED Status InterpretationIf the 2000-sheet Input Tray is working pro

444 Chapter 7 Troubleshooting C4085-910872 x 500-sheet Input Tray Standalone DiagnosticsThe standalone diagnostics are designed to test the 2 x 500-sh

C4085-91087 Self - Diagnostics on Paper-handling Devices 445Note The DIP switch is on if it is set to the top. The DIP switch is off if it is set to t

446 Chapter 7 Troubleshooting C4085-910874 To set the power supply switch to Diagnostic Mode, pull the blue power supply switch outward. The motors wi

C4085-91087 Self - Diagnostics on Paper-handling Devices 4472 x 500-sheet Input Tray LED Status InterpretationIf the 2 x 500-sheet Input Tray is worki

448 Chapter 7 Troubleshooting C4085-910877-bin Tabletop Mailbox Standalone DiagnosticsThe standalone diagnostics are designed to test the device’s mot

C4085-91087 Self - Diagnostics on Paper-handling Devices 4497-bin Tabletop Mailbox Motor TestThis test allows you to verify the functionality of the m

450 Chapter 7 Troubleshooting C4085-910877-bin Tabletop Mailbox Sensor TestThis test allows you to check if all unit sensors are working properly. By

C4085-91087 Self - Diagnostics on Paper-handling Devices 4512 2 13.12.0113.22.01Jam without delivery notice●Open all covers and doors in the device, a

20 Chapter 1 Product Information C4085-91087Ordering InformationUse only accessories specifically designed for this printer. To order an accessory, co

452 Chapter 7 Troubleshooting C4085-910871 2 Bin full when running the standalone test●Remove paper from all the bins.Table 7-20. Patterns of Flashing

C4085-91087 Self - Diagnostics on Paper-handling Devices 4538-bin Mailbox Stand-alone DiagnosticsThe stand-alone diagnostics are designed to test the

454 Chapter 7 Troubleshooting C4085-91087Figure 7-10 8-bin Mailbox Power Supply Test Mode Switch1 Plug in the power cord. The User LED should be solid

C4085-91087 Self - Diagnostics on Paper-handling Devices 4558-bin Mailbox Paper Path Test1 If the power-on test is successful, then manually feed pape

456 Chapter 7 Troubleshooting C4085-910878-bin Mailbox LEDs Status InterpretationTable 7-21. 8-bin Mailbox LED Status InterpretationMessage Descriptio

C4085-91087 Self - Diagnostics on Paper-handling Devices 457Jam in Flipper AreaA time-out condition occurred at the entry area.13.12.0213.22.0265.12.0

458 Chapter 7 Troubleshooting C4085-91087Jam in Delivery Head AssemblyA time-out condition occurred in the PSExit1 sensor.13.12.0513.22.05●Check for p

C4085-91087 Self - Diagnostics on Paper-handling Devices 459Jam in the Delivery Head Position SystemThe elevator motor detected an invalid window when

460 Chapter 7 Troubleshooting C4085-91087Wrong Page RequestA page request was received with an invalid output bin or invalid paper size information.13

C4085-91087 Information Pages 461Information PagesFrom the printer’s Control Panel you can print pages that give details about the printer and its cur

C4085-91087 Accessories and Options 21Printer Stands Printer Stand Used in place of the 2000-sheet Input Tray (Tray 4) or the 2 x 500-sheet Tray (Tray

462 Chapter 7 Troubleshooting C4085-91087Figure 7-11 Sample Menu MapTable 7-22. Key to Figure 7-11Information Menu lets you print information pages a

C4085-91087 Information Pages 463Configuration PageUse the configuration page to view current printer settings, help troubleshoot printer problems, or

464 Chapter 7 Troubleshooting C4085-91087Figure 7-12 Sample Configuration PageInstalled Personalities and OptionsLists all printer languages that are

C4085-91087 Information Pages 465Verify Installed OptionsIn the Installed Personalities and Options section on the configuration page, look for option

466 Chapter 7 Troubleshooting C4085-91087Table 7-23. Printer Devices TroubleshootingDevice Action if installed and not detectedDuplexer Turn the powe

C4085-91087 Communication 467CommunicationAsk the customer to run a print job from the host system. If the print job is successful, communication to t

468 Chapter 7 Troubleshooting C4085-91087If any of the installed devices are not shown on the configuration page, verify that the C-link cabling is co

C4085-91087 Image Quality 469Image QualityWhen you are working with customers, obtain a print sample before you begin troubleshooting their printer. A

470 Chapter 7 Troubleshooting C4085-91087Check the Toner CartridgeImage formation defects are often the result of toner cartridge problems. If there i

C4085-91087 Image Quality 471Image Quality TablesTable 7-25. Blank (White) PagePossible Cause Recommended ActionOCCASIONAL BLANK PAGES:1. Software Con

C4085-91087 iiiConventionsThis manual uses the following conventions:The names of major printer parts and assemblies are Capitalized.Color is used to

22 Chapter 1 Product Information C4085-91087Printing SuppliesHP Multipurpose Paper(Other HP media is available where office products are sold.) HP bra

472 Chapter 7 Troubleshooting C4085-910873. High voltage contact springs are dirty or defective. The high voltage contacts are mounted on the High Vol

C4085-91087 Image Quality 4733. EconoMode is on. EconoMode saves toner by reducing the dot density. This may appear to be a print quality problem in s

474 Chapter 7 Troubleshooting C4085-91087Table 7-28. DropoutPossible Cause Recommended Action1. Single sheet of paper is defective. Try reprinting the

C4085-91087 Image Quality 4753. Fusing Assembly is contaminated or damaged.Inspect the Fusing Assembly for toner build-up or scratches on the fuser ro

476 Chapter 7 Troubleshooting C4085-910874. Fusing Assembly is defective. The print will smear if the Fusing Assembly is not heated sufficiently to bo

C4085-91087 Image Quality 4775. Transfer Roller is dirty or worn. A worn Transfer Roller can cause background scatter due to improper bias voltages.Cl

478 Chapter 7 Troubleshooting C4085-91087 3. Rollers are dirty. Any dirty roller in the paper path may result in a repetitive print defect.Examine and

C4085-91087 Image Quality 479 Table 7-34. Misshapen Characters, VoidsPossible Cause Recommended Action1. Paper surface too rough. Toner migrates to lo

480 Chapter 7 Troubleshooting C4085-91087Table 7-35. Faulty RegistrationPossible Cause Recommended Action1. Paper tray is overloaded. If the tray is o

C4085-91087 Image Quality 4813. Paper lot is bad. Paper that is manufactured poorly or inconsistently or that has too smooth or too rough a surface te

C4085-91087 Accessories and Options 23Memory, Fonts, and Mass StorageDual In-line Memory Module (DIMM)(100-pin)Boosts the ability of the printer to ha

482 Chapter 7 Troubleshooting C4085-91087 Table 7-38. White Stripes Parallel to PathPossible Cause Recommended Action1. Toner cartridge is nearly empt

C4085-91087 Image Quality 483 Table 7-40. Compressed PrintPossible Cause Recommended Action1. Toner cartridge bushings are too tight. This may occur

484 Chapter 7 Troubleshooting C4085-91087Repetitive Defect RulerRepetitive print defects are usually associated with a specific roller within the prin

C4085-91087 Image Quality 485Image System TroubleshootingHalf Self Test Functional CheckThe electrophotographic process can be subdivided into the fol

486 Chapter 7 Troubleshooting C4085-91087Drum Rotation Functional CheckThe photosensitive drum, located in the toner cartridge, must rotate for the pr

C4085-91087 Image Quality 487 Figure 7-15 High Voltage Power Supply ContactsDrum GroundTransfer RollerPost Transfer BiasToner Registration/Toner Senso

488 Chapter 7 Troubleshooting C4085-91087Network TroubleshootingThis section provides an overview of the printer’s interface requirements.Note Communi

C4085-91087 Network Troubleshooting 489Figure 7-16 Sample JetDirect Configuration PageNetwork statisticsI/O card statusIP addressNode nameIPX/SPX stat

490 Chapter 7 Troubleshooting C4085-91087●If the EIO JetDirect Card has successfully powered up and completed its internal diagnostics, the I/O CARD R

C4085-91087 Diagrams 491DiagramsThis section contains the following diagrams:●Figure 7-17, “Printer Sensors and Switches,” on page 492●Figure 7-18, “P

24 Chapter 1 Product Information C4085-91087Cable and Interface AccessoriesEnhanced I/O Cards HP JetDirect print server multi-protocol EIO network car

492 Chapter 7 Troubleshooting C4085-91087Figure 7-17 Printer Sensors and Switches

C4085-91087 Diagrams 493Figure 7-18 Printer Motor, Clutches, and Solenoids

494 Chapter 7 Troubleshooting C4085-91087Figure 7-19 DC Controller Inputs and Outputs (1 of 5)

C4085-91087 Diagrams 495Figure 7-20 DC Controller Inputs and Outputs (2 of 5)

496 Chapter 7 Troubleshooting C4085-91087Figure 7-21 DC Controller Inputs and Outputs (3 of 5)

C4085-91087 Diagrams 497Figure 7-22 DC Controller Inputs and Outputs (4 of 5)

498 Chapter 7 Troubleshooting C4085-91087Figure 7-23 DC Controller Inputs and Outputs (5 of 5)

C4085-91087 Diagrams 499Figure 7-24 Mailbox with Stapler Wiring Diagram

500 Chapter 7 Troubleshooting C4085-91087Figure 7-25 2000-sheet Input Tray Controller PCA Inputs

C4085-91087 Diagrams 501Figure 7-26 2000-sheet Input Tray Controller PCA Outputs

C4085-91087 Accessories and Options 25DocumentationHP LaserJet 8000, 8000 N, 8000 DN, and HP Mopier 240 Printers User GuideThis is an online user guid

502 Chapter 7 Troubleshooting C4085-91087Figure 7-27 2000-sheet Input Tray Main Wiring Diagram

C4085-91087 Diagrams 503Figure 7-28 8-bin Mailbox Main Wiring Diagram11223341212345previousdeviceconnector(in)C-linknextdeviceconnector(out)C-linkpowe

504 Chapter 7 Troubleshooting C4085-91087

C4085-91087 Chapter contents 5058Parts and Diagrams Chapter contentsHow to Use the Part Lists and Diagrams - - - - - - - - - 506Accessories

506 Chapter 8 Parts and Diagrams C4085-91087How to Use the Part Lists and DiagramsThe figures in this chapter illustrate the major subassemblies and t

C4085-91087 Accessories and Supplies 507Accessories and SuppliesThe accessories, supplies, and parts listed in Chapter 1 and in the following pages ar

508 Chapter 8 Parts and Diagrams C4085-91087Printer and Paper-Handling ComponentsFigure 8-1 HP LaserJet 8000/8000N/8000DN or Mopier 240 Printer and Pa

C4085-91087 Printer and Paper-Handling Components 509Table 8-1. Printer and Paper-Handling ComponentsRef Description / Product Number Part Number QTY0

510 Chapter 8 Parts and Diagrams C4085-91087not shown C-link Cable Assembly 97 cm (Multibin Mailbox to Stapler)C3766-60512not shown Stapler Cartridges

C4085-91087 Printer and Paper-Handling Components 511

26 Chapter 1 Product Information C4085-91087Hard Disk The printer hard disk accessory is optional for the HP LaserJet 8000/N/DN printers. The hard dis

512 Chapter 8 Parts and Diagrams C4085-91087Printer Parts and DiagramsFigure 8-2 Printer Covers and Doors

C4085-91087 Printer Parts and Diagrams 513 Table 8-2. Printer Covers and DoorsRef Description Part Number QTY01 Left Access Door RB1-6667-000CN 102 Le

514 Chapter 8 Parts and Diagrams C4085-91087 Figure 8-3 Printer Internal Components (1 of 4)

C4085-91087 Printer Parts and Diagrams 515Table 8-3. Printer Internal Components (1 of 4)Ref Description Part Number QTY01 Transfer Guide Bushing RB1-

516 Chapter 8 Parts and Diagrams C4085-91087 Figure 8-4 Printer Internal Components (2 of 4)

C4085-91087 Printer Parts and Diagrams 517Table 8-4. Printer Internal Components (2 of 4)Fig Ref Description Part QTY8-04 A Diverter Assembly RG9-1150

518 Chapter 8 Parts and Diagrams C4085-910878-04E 87 Pickup Motor RH7-1262-000CN 18-04E 88 Electromagnetic Clutch (Paper Feed) RH7-5120-000CN 1Table

C4085-91087 Printer Parts and Diagrams 519

520 Chapter 8 Parts and Diagrams C4085-91087Figure 8-5 Printer Internal Components (3 of 4)

C4085-91087 Printer Parts and Diagrams 521Table 8-5. Printer Internal Components (3 of 4)Ref Description Part Number QTY06 Laser / Scanner Assembly RG

C4085-91087 Accessories and Options 27Table 1-9. Minimum Memory RequirementsPrint Job Paper Size PCL Minimum Memory RequirementsPostScript Emulation M

522 Chapter 8 Parts and Diagrams C4085-91087Figure 8-6 Printer Internal Components (4 of 4)

C4085-91087 Printer Parts and Diagrams 523 Table 8-6. Printer Internal Components (4 of 4)Ref Description Part Number QTY02 Fuser Cable 1 RG5-1849-000

524 Chapter 8 Parts and Diagrams C4085-91087Paper-Handling Devices Parts and DiagramsInput Devices2000-sheet Input TrayFigure 8-7 2000-sheet Input Tra

C4085-91087 Paper-Handling Devices Parts and Diagrams 525Table 8-7. 2000-sheet Input Tray Components (1 of 2)Ref Description Part Number QTY71 Back Co

526 Chapter 8 Parts and Diagrams C4085-91087Figure 8-8 2000-sheet Input Tray Components (2 of 2)

C4085-91087 Paper-Handling Devices Parts and Diagrams 527Table 8-8. 2000-sheet Input Tray Components (2 of 2)Ref Description Part Number QTY90 Feet Ad

528 Chapter 8 Parts and Diagrams C4085-910872 x 500-sheet Input TrayFigure 8-9 2 x 500-sheet Input Tray Internal Components

C4085-91087 Paper-Handling Devices Parts and Diagrams 529Table 8-9. 2 x 500-sheet Input Tray Internal ComponentsRef Description Part Number QTY1 Back

530 Chapter 8 Parts and Diagrams C4085-91087Note All screws are included in the Screws Kit, and all shipping locks are included in the Shipping Locks

C4085-91087 Paper-Handling Devices Parts and Diagrams 531

28 Chapter 1 Product Information C4085-91087Service Approach Repair of the printer normally begins with a three-step process:●Step 1: Isolate the prob

532 Chapter 8 Parts and Diagrams C4085-91087Output Devices7-bin Tabletop MailboxFigure 8-10 7-bin Tabletop Mailbox Internal Components

C4085-91087 Paper-Handling Devices Parts and Diagrams 533Table 8-10. 7-bin Tabletop Mailbox Internal ComponentsReference Description Part Number QTY1

534 Chapter 8 Parts and Diagrams C4085-91087Note All screws are included in the Screws Kit.not shown Hardware Screws Kit for 7-bin Tabletop Mailbox RY

C4085-91087 Paper-Handling Devices Parts and Diagrams 535

536 Chapter 8 Parts and Diagrams C4085-910878-bin MailboxFigure 8-11 8-bin Mailbox Components (1 of 3)

C4085-91087 Paper-Handling Devices Parts and Diagrams 537Table 8-11. 8-bin Mailbox Components (1 of 3)Ref Description Part Number QTY20 User LED PCA (

538 Chapter 8 Parts and Diagrams C4085-91087Figure 8-12 8-bin Mailbox Components (2 of 3)

C4085-91087 Paper-Handling Devices Parts and Diagrams 5391. The extension is necessary when no input device is used in combination with an 8-bin mailb

540 Chapter 8 Parts and Diagrams C4085-91087Figure 8-13 8-bin Mailbox Components (3 of 3)

C4085-91087 Paper-Handling Devices Parts and Diagrams 541Table 8-13. 8-bin Mailbox Components (3 of 3)Ref Description Part Number QTY35 3 Diagnostic L

C4085-91087 Service Approach 29Exchange Program HP offers remanufactured assemblies for some parts. These are identified in Chapter 8 and can be order

542 Chapter 8 Parts and Diagrams C4085-91087Finisher Figure 8-14 Stapler Internal Components7128345698

C4085-91087 Paper-Handling Devices Parts and Diagrams 543 Table 8-14. Stapler Internal ComponentsRef Description Part Number QTYStapler Assembly C4787

544 Chapter 8 Parts and Diagrams C4085-91087Alphabetical Parts ListTable 8-15. Alphabetical Parts ListDescription Part Number Table No. and Page2 x 50

C4085-91087 Alphabetical Parts List 545Back Cover C4785-60505 Table 8-13 (page 541)Back Cover RB2-3675-000CN Table 8-9 (page 529)Back Cover RA2-2455-0

546 Chapter 8 Parts and Diagrams C4085-91087Compression Spring, Rear RS5-2466-000CN Table 8-4 (page 517)Conductive Bushing RS5-1101-000CN Table 8-4 (p

C4085-91087 Alphabetical Parts List 547Face-Up Solenoid Assembly RG5-1875-000CN Table 8-3 (page 515)Fan 1 RH7-1266-000CN Table 8-5 (page 521)Fan 2 RH7

548 Chapter 8 Parts and Diagrams C4085-91087Front Panel (Control Panel Display) RG5-4384-000CN Table 8-2 (page 513)Front Top Cover RF5-2762-000CN Tabl

C4085-91087 Alphabetical Parts List 549Jumper Cable, long C4781-60502 Table 8-1 (page 509)Jumper Cable, Long C4781-60502 Table 8-8 (page 527)Jumper Ca

550 Chapter 8 Parts and Diagrams C4085-91087Maintenance Kit, 100-120V / C3971B C3971-69002 (ex.) Table 8-1 (page 509)Maintenance Kit, 220-240V / C3972

C4085-91087 Alphabetical Parts List 551Photo Interrupter WG8-0291-000CN Table 8-4 (page 517)Pickup Motor RH7-1262-000CN Table 8-4 (page 517)Pickup Ro

30 Chapter 1 Product Information C4085-91087The toner cartridge may print less than 15,000 images if routinely printing very dense print. Conversely,

552 Chapter 8 Parts and Diagrams C4085-91087Reversing Tray (Face-up) RA2-2487-000CN Table 8-10 (page 533)Right Cover RB1-7832-020CN Table 8-7 (page 52

C4085-91087 Alphabetical Parts List 553Short C-link Cable adapter (extension) C4785-70001 Table 8-12 (page 539)Solenoid Flipper RH7-5225-000CN Table 8

554 Chapter 8 Parts and Diagrams C4085-91087Transfer Roller RF5-1412-000CN Table 8-3 (page 515)Transfer Roller Assembly RG5-1887-000CN Table 8-3 (page

C4085-91087 Numerical Parts List 555Numerical Parts ListTable 8-16. Numerical Parts ListPart Number Description Table No. and Page2 x 500-sheet Input

556 Chapter 8 Parts and Diagrams C4085-91087C3166-67905 Packaging Kit, Printer Table 8-1 (page 509)C3166-69005 High Voltage Power Supply, Exchange Tab

C4085-91087 Numerical Parts List 557C3766-60510 Kit: Plastic staple cover; scan bar (shown) bin full sensor, actuator, and flag (not shown)Table 8-14

558 Chapter 8 Parts and Diagrams C4085-91087C4785-60506 Head Assembly (with Metal Tape) Table 8-12 (page 539)C4785-60507 Metal Tape and Housing Assemb

C4085-91087 Numerical Parts List 559R95-3003-000CN 2 x 500-sheet Input Tray (whole unit) Table 8-9 (page 529)R95-3007-000CN 7-bin Tabletop Mailbox, wh

560 Chapter 8 Parts and Diagrams C4085-91087RB1-6495-000CN Front Door Table 8-2 (page 513)RB1-6498-000CN Right, Lower Cover (Rear Plastic on Sheet Met

C4085-91087 Numerical Parts List 561RB2-3705-000CN Spacer, latch Table 8-9 (page 529)RF1-4004-000CN Front Cover Table 8-10 (page 533)RF1-4005-000CN La

C4085-91087 Technical Assistance 31Technical Assistance HP ASAP (Automated Support Access Program) provides free technical support information 24 hour

562 Chapter 8 Parts and Diagrams C4085-91087RG1-3840-000CN Right Cover Assembly Table 8-10 (page 533)RG1-3842-000CN Rail Assembly Table 8-10 (page 533

C4085-91087 Numerical Parts List 563RG5-1921-000CN Fan 3 Cable Table 8-6 (page 523)RG5-1924-000CN Cable Assembly Table 8-5 (page 521)RG5-1925-000CN Sc

564 Chapter 8 Parts and Diagrams C4085-91087RG5-4416-000CN Paper Deck Drive Assembly Table 8-9 (page 529)RG5-4440-000CN Main Cable Table 8-9 (page 529

C4085-91087 Numerical Parts List 565RY7-5048-000CN Hardware Screws Kit for 7-bin Tabletop Mailbox Table 8-10 (page 533)VD5-0056-301CN Fuse, LVPS, 110-

566 Chapter 8 Parts and Diagrams C4085-91087

C4085-91087 Index 567IndexNumerics2 x 500-sheet input tray (trays 4 & 5)adjustable foot tip 290adjustment procedure 86back cover 263casters

568 Index C4085-91087handle 327identification label 6latching mechanism 328modes 129operation 128ordering 20orientation 294paper paths and compon

C4085-91087 Index 569blank pageentire 471middle of page 483partial 482bubble print 481Ccable harness (2000-sheet input tray) 240cablesc-linkinpu

570 Index C4085-91087Ddaisy chain connections 467data light 53DC controller PCAdiagrams 494functions 99removing 207DC power 93Declaration of Con

C4085-91087 Index 571stapler operation 139status LED PCA 358switches 133testing 453transport belt motor 340troubleshooting 383verifying installa

iv C4085-91087Chapter Descriptions1 Product InformationContains printer features and product overview, tray capacities and sizes, media specificati

32 Chapter 1 Product Information C4085-91087InternetAnonymous FTP library service is available for around-the-clock access to drivers, software, and t

572 Index C4085-91087Hhalf self test functional check 485handle (7-bin tabletop mailbox) 327hard diskabout 26ordering 23removing and replacing 1

C4085-91087 Index 573locating pins2 x 500-sheet input tray 2912000-sheet input tray 89, 258low voltage power supplydistribution system 93removi

574 Index C4085-91087paper input unit (PIU)removing and replacing 206sensor 223paper jams8-bin mailbox or mailbox with stapler 383detection 144tro

C4085-91087 Index 575printingsupplies 22printing menu 64PS, see PostScript Level 2 emulationPS1, see registration sensorPS2, see paper input unit

576 Index C4085-91087standdimensions and weight 8ordering 21top cover 300verifying installation 463virtual stacker mode 130weight 8short tray 7

C4085-91087 Index 577tray 1pickup assembly 190printing from 115removing and replacing 187specifications 4tray 7 (7-bin tabletop mailbox) 324tray

578 Index C4085-91087troubleshooting 381, 382verifying installation 463vertical transfer unit (VTU) 255weight 7wiring diagram 502typefaces, see

C4085-91087 Warranty 33Warranty This warranty entitles you to standard warranty services for your printer and accessories and is available from HP wor

Copyright© 1998Hewlett-Packard Co.Printed in USAManual Part No.C4085-91087*C4085-91087**C4085-91087*C4085-91087Printed on at least50% Total Recycled F

EnglishCopyright© 1998Hewlett-Packard Co.Printed in USAManual Part No.C4085-91023*C4085-91023**C4085-91023*C4085-91023Printed on at least50%Total Recy

HP LaserJet 8000, 8000 N,8000 DN, and HP Mopier 240Printers Service Manual Supplementfor Paper-handling AccessoriesHP 2000-sheet Input Tray(C4781A)HP

© CopyrightHewlett-PackardCompany 1998All Rights Reserved.Reproduction, adaptation,or translation withoutprior written permissionis prohibited, except

ConventionsThis publication uses the following conventions:The names of major printer parts and assemblies are Capitalized.Color is used to emphasize

ContentsConventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iiiNew Product Features . . . . . . . . . . . .

2000-sheet Input Tray Paper Quantity Switch Assembly . . . . 2-182000-sheet Input Tray Paper Size Switch Assembly . . . . . . 2-182000-sheet Input

Power-on Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14Multibin Mailbox Paper Path Test . . . . . . . . . . . . .

List of FiguresFigure 1-1 2000-sheet Input Tray Paper Path . . . . . . . . . . 1-4Figure 1-2 2000-sheet Input Tray Sensors, Switches, Clutches,an

Figure 2-31 Multibin Mailbox Flipper Assembly (3 of 3) . . . . 2-33Figure 2-32 Multibin Mailbox Delivery Head Motor . . . . . . . 2-34Figure 2-33

34 Chapter 1 Product Information C4085-91087Note The use of non-Hewlett-Packard toner cartridges alone does not affect either your warranty or any mai

List of TablesTable 1-1 2000-sheet Input Tray Sensors, Switches, Clutches,and Motors . . . . . . . . . . . . . . . . . . . . . . . 1-5Table

New Product Features2000-sheet Input Tray• variable speed• standalone self-test diagnostics• diagnostic LEDs• user status LED• new parts kits and fiel

1Theory of OperationOverviewThe following information provides the theory of operation for thefollowing paper-handling accessories and parts:• Paper-h

2000-sheet Input Tray Theory of OperationFeaturesThe HP 2000-sheet Input Tray now supports variable engine inputspeeds, ranging from 6 to 32 ppm. The

Lifter OperationThe lifter plate in the 2000-sheet Input Tray’s paper tray is held by twowires that are wound on four pulleys by the Lifter Motor. Whe

Paper PathFigure 1-1 illustrates the paper path components in the 2000-sheet InputTray.Figure 1-1 2000-sheet Input Tray Paper Path1-4 Theory of Operat

Sensors, Switches, Clutches, and MotorsTable 1-1 and Figure 1-2, on the next page describe and illustrate thesensors, switches, clutches, and motors o

Figure 1-2 2000-sheet Input Tray Sensors, Switches, Clutches, and Motors1-6 Theory of Operation

Switches FunctionalityTables 1-2 and 1-3 show the paper quantity and paper size switches onthe 2000-sheet Input Tray.Paper Quantity SwitchesPaper Size

Multibin Mailbox Theory of OperationFeaturesThe Multibin Mailbox (MBM) is an output unit designed for variablespeeds, ranging from 6 to 32 ppm. The Mu

C4085-91087 Regulatory Information 35Regulatory InformationFCC RegulationsThis equipment has been tested and found to comply with the limits for a Cla

Collator ModeEach mopy (copy) of a single job is sent to a different bin (next bindown). This mode separates mopies automatically.In Collator Mode, th

Sensors, Switches, Motors, and Controller PCATable 1-4 and Figure 1-3 on the next page illustrate and describe theMultibin Mailbox sensors, switches,

Figure 1-3 Multibin Mailbox Sensors, Switches, Motors, and Controller PCATheory of Operation 1-11

Receiving PaperThe printer delivers paper to the Multibin Mailbox through the leftoutput delivery slot (Input Paper Guide) at a rate of 107 mm per sec

Paper PathFigure 1-4 illustrates the components of the Multibin Mailbox paperpath.Figure 1-4 Multibin Mailbox Paper PathTheory of Operation 1-13

Power-on SequenceDuring the power-on sequence, the Delivery Head Assembly moves firstto the top “home” position at the left output bin. From that posi

Communication Link (C-link) CablesCommunication with the Multibin Mailbox is handled through thePaper-handling Controller on the printer. The informat

Duplexer Theory of OperationThe Duplexer installs inside the printer, below the Fusing Assembly. Theback side of the paper is printed first. Then the

2Removal and ReplacementOverviewOverviewThis chapter provides removal and replacement information for thefollowing HP paper-handling accessories:• HP

Required Tools• #2 Phillips screwdriver (6-inch [152 mm] shaft)• Small flat-blade screwdriver• Small needle-nose pliers• T-10, T-15, and T-20 Torx dri

36 Chapter 1 Product Information C4085-91087Environmental Product StewardshipProtecting the EnvironmentHewlett-Packard Company is committed to providi

2000-sheet Input Tray Removal andReplacementWARNING!For the procedures in this section, the printer and all accessories must beunplugged. Before attem

2000-sheet Input Tray Front Cover1 Open the paper tray on the 2000-sheet Input Tray to the stops (Figure2-3).2 Remove the Paper Limit Back Plate from

2000-sheet Input Tray Back Cover1 Make sure that the power cord for the 2000-sheet Input Tray isunplugged from the power source.2 Remove the 4 screws

2000-sheet Input Tray Left Cover1 Unplug the power cord and the C-link interface cables from the2000-sheet Input Tray.2 Remove the 2 screws that are l

2000-sheet Input Tray Right Cover1 Remove the Vertical Transfer Unit (VTU) from the 2000-sheet InputTray (see Figure 2-18).2 Remove the 2 screws that

2000-sheet Input Tray Main Drive Assembly1 Remove the Back Cover from the 2000-sheet Input Tray (see Figure2-4).2 Locate the cable that runs from the

2000-sheet Input Tray Paper Tray1 Open the paper tray on the 2000-sheet Input Tray and remove anyunused paper.2 Remove the Vertical Transfer Unit (VTU

2000-sheet Input Tray Main Cable Harness1 Remove the Back Cover from the 2000-sheet Input Tray (see Figure2-4).2 Locate and disconnect the 6 cable con

2000-sheet Input Tray Controller PCA1 Remove the Back and Left Covers from the 2000-sheet Input Tray (seeFigure 2-4 and Figure 2-5).2 Disconnect the 1

2000-sheet Input Tray Front LED PCA Assembly1 Open the paper tray on the 2000-sheet Input Tray halfway to the stops.2 On the upper-left corner of the

C4085-91087 Environmental Product Stewardship 37The design of the printer facilitates the recycling of:Plastics Plastic parts have material identifica

2000-sheet Input Tray Pickup Assembly1 Remove the Vertical Transfer Unit (VTU) from the 2000-sheet InputTray (see Figure 2-18).2 Remove the Right Cove

There are three photosensors on the Pickup Assembly:• one to sense that the Transfer Assembly is closed (Figure 2-13,callout 1).• one to sense that th

2000-sheet Input Tray Power Supply1 Remove the Back and Left Covers from the 2000-sheet Input Tray (seeFigure 2-4 and Figure 2-5).2 Locate the cable t

2000-sheet Input Tray Pickup, Feed, andSeparation RollersThree rollers in the 2000-sheet Input Tray pick up paper and feed it tothe printer:• The Pick

To Reinstall:1 If all three rollers were removed, reinstall the Pickup Roller first(callout 1).2 When reinstalling the Feed and Separation Rollers, in

2000-sheet Input Tray Paper Quantity SwitchAssembly1 Remove the Back Cover from the 2000-sheet Input Tray (see Figure2-4).2 Locate the cable that runs

2000-sheet Input Tray Paper Size and Paper Quantity SwitchAssemblies (1 of 2)2000-sheet Input Tray Paper Size and Paper Quantity SwitchAssemblies (2 o

2000-sheet Input Tray VTU1 Open the Vertical Transfer Unit (VTU) on the 2000-sheet Input Tray.2 Rotate the 2 plastic cams on the VTU hinges toward the

2000-sheet Input Tray Tension Springs1 Remove the Left Cover of the 2000-sheet Input Tray (see Figure 2-5).2 Open the paper tray on the 2000-sheet Inp

2000-sheet Input Tray Locating Pins1 Remove the printer from the 2000-sheet Input Tray. (For instructions,see the HP LaserJet 8000, 8000 N, 8000 DN, a

38 Chapter 1 Product Information C4085-91087Material Safety Data SheetThe Toner Cartridge/Drum MSDS can be obtained by calling the U.S. HP FIRST (Fax

2000-sheet Input Tray Outriggers (StabilizingFeet)1 Remove the printer from the 2000-sheet Input Tray. (For instructions,see the HP LaserJet 8000, 800

2000-sheet Input Tray Casters1 Remove the printer from the 2000-sheet Input Tray. (For instructions,see the HP LaserJet 8000, 8000 N, 8000 DN, and HP

2000-sheet Input Tray Adjustable Foot1 Remove the printer from the 2000-sheet Input Tray. (For instructions,see the HP LaserJet 8000, 8000 N, 8000 DN,

Multibin Mailbox Removal andReplacementWARNING!For the procedures in this section, the printer and all accessories must beunplugged. Before attempting

Multibin Mailbox Front and Back CoversNoteThe procedures for removing the Front and Back Covers are the same.However, before removing the Back Cover,

Multibin Mailbox Top Cover1 Remove the Front and Back Covers from the Multibin Mailbox (seeFigure 2-25).2 Locate the User Status LED PCA at the upper-

Multibin Mailbox Power Supply1 Locate the cable that runs from the Multibin Mailbox Power Supplydown to the Multibin Mailbox Controller PCA, and disco

Multibin Mailbox Paper Bins and Blind CoverThe procedure for removing a paper bin and the Blind Cover is thesame. Each bin rests in its labeled slot.1

Multibin Mailbox Flipper Assembly1 Remove all the paper bins and the Blind Cover from the MultibinMailbox (see Figure 2-28).2 Remove the Front, Back,

Multibin Mailbox Flipper Assembly (1 of 3)Multibin Mailbox Flipper Assembly (2 of 3)Figure 2-29Figure 2-302-32 Removal and Replacement

C4085-91087 Environmental Conformity 39Environmental ConformityPlastics Plastic parts have material identification markings, according to internationa

Multibin Mailbox Flipper Assembly (3 of 3)Figure 2-31Removal and Replacement 2-33

Multibin Mailbox Delivery Head Motor1 Remove the Back Cover from the Multibin Mailbox (see Figure 2-25).2 Locate the cable that runs from the Delivery

Multibin Mailbox Transport Belt Motor1 Remove the Back Cover from the Multibin Mailbox (see Figure 2-25).2 Remove all the paper bins and the Blind Cov

Multibin Mailbox Input Paper Guide1 Remove the Multibin Mailbox from the printer. (For instructions, see theHP LaserJet 8000, 8000 N, 8000 DN, and HP

Multibin Mailbox Input Paper Guide (2 of 2)Figure 2-35Removal and Replacement 2-37

Multibin Mailbox Metal Tape and HousingAssembly1 Remove all the paper bins and the Blind Cover from the MultibinMailbox (see Figure 2-28).WARNING!The

Multibin Mailbox Metal Tape and Housing Assembly (1 of 2)Multibin Mailbox Metal Tape and Housing Assembly (2 of 2)Figure 2-36Figure 2-37Removal and Re

Multibin Mailbox Controller PCA1 Remove the Multibin Mailbox from the printer. (For instructions, see theHP LaserJet 8000, 8000 N, 8000 DN, and HP Mop

Multibin Mailbox Controller PCA (2 of 2)Figure 2-39Removal and Replacement 2-41

Multibin Mailbox Anticurl Strings1 Remove the Back Cover, all the paper bins, and the Blind Cover fromthe Multibin Mailbox (see Figure 2-25 and Figure

40 Chapter 1 Product Information C4085-91087Declaration of Conformityaccording to ISO/IEC Guide 22 and EN45014Manufacturer's Name:Hewlett-Packard

Multibin Mailbox Anticurl Strings (2 of 2)Figure 2-41Removal and Replacement 2-43

Multibin Mailbox Delivery Head Assembly1 Remove the Back Cover from the Multibin Mailbox (see Figure 2-25).2 Remove all the paper bins and the Blind C

Multibin Mailbox Delivery Head Assembly (1 of 4)Multibin Mailbox Delivery Head Assembly (2 of 4)Figure 2-42Figure 2-43Removal and Replacement 2-45

Multibin Mailbox Delivery Head Assembly (3 of 4)Multibin Mailbox Delivery Head Assembly (4 of 4)Figure 2-44Figure 2-452-46 Removal and Replacement

Multibin Mailbox Interlock Switch1 Remove the Back Cover from the Multibin Mailbox (see Figure 2-25).Caution Before removing the wires from the Multib

Multibin Mailbox Diagnostic LED PCA1 Locate the Diagnostic LED that is on the back side of the MultibinMailbox (Figure 2-47, callout 1).2 Remove the B

Multibin Mailbox Diagnostic LED PCA (2 of 2)Figure 2-48Removal and Replacement 2-49

Multibin Mailbox User Status LED PCA1 Locate the User Status LED PCA that is on the upper-front side of theMultibin Mailbox (Figure 2-49, callout 1).2

Multibin Mailbox User Status LED PCA (2 of 2)Figure 2-50Removal and Replacement 2-51

Multibin Mailbox Adjustable and Fixed CastersNoteThe procedures for removing the Adjustable and Fixed Casters are thesame.1 Remove the Multibin Mailbo

C4085-91087 Declaration of Conformity 411.0 kV Power LinesFCC Title 47 CFR, Part 15 Class B2) / ICES-003, Issue 2 / VCCI-B1)AS / NZS 3548:1992 / CISPR

Multibin Mailbox Attachment Assembly1 Disconnect the power cable and the C-link cable from the MultibinMailbox Controller PCA (see Figure 2-38, callou

2-54 Removal and Replacement

3TroubleshootingOverviewThis chapter provides additional troubleshooting information for the2000-sheet Input Tray, Multibin Mailbox (MBM), and Duplexe

Troubleshooting ApproachThis section provides a systematic approach to identifying the causes ofmalfunctions and errors on the paper-handling accessor

8 Record any specific error trends and review “Interpret Event Log” inchapter 7 of the HP LaserJet 8000, 8000 N, 8000 DN, and HP Mopier240 Printers Se

Check theTotal Memoryto see if itcorrespondswith what isphysicallyinstalled in theprinter.Figure 3-1 Sample Configuration PageFormatterNumber:Division

Sample Menu PageFigure 3-2Troubleshooting 3-5

C-link Communication CablesThe architecture of the communication link (C-link) allows thePaper-handling Controller PCA on the printer to control five

Paper Path TestUsing the information from the Event Log, you can verify a specificprinter paper path with the paper path test. You must first set the

Paper Path Test Source and Output SelectionFigure 3-43-8 Troubleshooting

C4085-91087 v8 Parts and DiagramsContains exploded view drawings and part number listings for all replaceable parts in the printer and paper-handling

42 Chapter 1 Product Information C4085-91087Safety StatementsLaser Safety StatementThe Center for Devices and Radiological Health (CDRH) of the U.S. F

Messages StructureNoteSee the HP LaserJet 8000, 8000 N, 8000 DN, and HP Mopier 240Printers Service Manual for this information.Error MessagesNoteSee t

2000-sheet Input Tray StandaloneDiagnosticsThe 2000-sheet Input Tray can run standalone diagnostic tests to test theaccessory’s motors, functionality,

2000-sheet Input Tray Standalone Running TestThis test verifies that the 2000-sheet Input Tray is functioning properly.For this test, use the LED loca

5 To stop the test, set the power supply switch back to Operational Mode,and set the DIP switches on the Controller PCA to the off position (seeTable

Multibin Mailbox Standalone DiagnosticsThe standalone diagnostics are designed to test the accessory’s motorsand functionality without connection to t

Multibin Mailbox Standalone Diagnostic TestEach time you run the standalone diagnostic test, proceed as follows:1 Turn off the printer, and pull the M

5 If a problem exists, an error code will be shown in the Service LEDs.(See table 3-3 for an interpretation of the LEDs.)Multibin Mailbox Paper Path T

Message Description UserLEDServiceLEDsRecommended ActionLeft Output Bin Is Too FullThe Left Output Bin has too muchpaper and it has reached thePSFaceU

Message Description UserLEDServiceLEDsRecommended ActionJam in Delivery Head AssemblyA time-out condition occurred inthe PSExit1 sensor.[] [][][]• Che

Message Description UserLEDServiceLEDsRecommended ActionWrong Page RequestA page request was received withan invalid output bin or invalidpaper size i

C4085-91087 Safety Statements 43Korean EMI statementLaser Statement for FinlandLASERTURVALLISUUSLUOKAN 1 LASERLAITEKLASS 1 LASER APPARATHP LaserJet 80

General Troubleshooting InformationNoteSee the HP LaserJet 8000, 8000 N, 8000 DN, and HP Mopier 240Family Printers Service Manual for this information

Figure 3-7 2000-sheet Input Tray Controller PCA Inputs3-20 Troubleshooting

Figure 3-8 2000-sheet Input Tray Controller PCA OutputsTroubleshooting 3-21

Figure 3-9 2000-sheet Input Tray Main Wiring Diagram3-22 Troubleshooting

11223341212345previousdeviceconnector(in)C-linknextdeviceconnector(out)C-linkpowersupplyconnector(one dot)(two dots)M5M1Delivery HeadPosition MotorRed

3-24 Troubleshooting

4PartsOverviewThis chapter provides part descriptions and part numbers for the2000-sheet Input Tray, Multibin Mailbox, and Duplexer. See theHP LaserJe

77Kit 182837575Kit 1767273Kit 1797481Kit 18987Kit 1787880Kit 17184858688Kit 1Kit 1Figure 4-1 2000-sheet Input Tray (C4781A) Components (1 of 2)4-2 Par

2000-sheet Input Tray ComponentsReference Description Quantity HP Part Number71 Back Cover 1 RB2-2519-000CN72 Cassette Size Labels 1 RS5-8611-000CN73

Kit 11001029995909793939691Kit 1Kit 198Kit 19294101Kit 194101Kit 1Figure 4-2 2000-sheet Input Tray (C4781A) Components (2 of 2)4-4 Parts

44 Chapter 1 Product Information C4085-91087VARO !Mikäli kirjoittimen suojakotelo avataan, olet alttiina näkymättömälle lasersäteilylle laitteen olles

Reference Description Quantity HP Part Number90 Feet Adjustable Tip 1 RG5-3863-000CN91 Front LED PCA with holder and cable 1 RG5-4204-000CN92 Main Cab

Figure 4-3 Multibin Mailbox (C4785A) Components (1 of 3)4-6 Parts

Multibin Mailbox ComponentsReference Description Quantity HP Part Number20 User LED PCA (with Cable) 1 C4785-6051521 Adjustable Fixed Caster 1 C4785-6

Figure 4-4 Multibin Mailbox (C4785A) Components (2 of 3)4-8 Parts

Reference Description Quantity HP Part Number32 Flipper Assembly 1 C4785-6050933 Head Assembly (with Metal Tape) 1 C4785-6050634 Metal Tape and Housin

ΗΕΩΛΕΤΤΑβχδεφγονεδεαδ ονεανγβλδκε ονεανδβδελδ ονεανδκφδβλ ονεονεδκσλσ ονεονεδκλλσλ ονεονδεδσκσ πµνΗΕΩΛΕΤΤΑβχδεφγονεδεαδ ονεανγβλδκε ονεανδβδελδ ονεανδ

DuplexerReference Description Quantity HP Part Number35 3 Diagnostic LED PCA (with Cable) 1 C4785-6051436 Attachment Clip 1 C4785-6051237 Back Cover 1

4-12 Parts

Index!2000-sheet Input TrayAdjustable Foot . . . . . . 2-25Back Cover . . . . . . . . 2-5Casters . . . . . . . . . . . 2-24locating clutch

Multibin Mailbox (MBM)Adjustable Casters . . . . 2-52Anticurl Strings . . . . . . 2-42Attachment Assembly . . . 2-53Back Cover . . . . . . . .

C4085-91087 Chapter Contents 452Site Requirements Chapter ContentsOperating Environment- - - - - - - - - - - - - - - - - - - 46Spa

EnglishCopyright© 1998Hewlett-Packard Co.Printed in USAManual Part No.C4085-91023*C4085-91023**C4085-91023*C4085-91023Printed on at least50%Total Recy

46 Chapter 2 Site Requirements C4085-91087Operating Environment The electrical specifications listed in Chapter 1 must be maintained to ensure proper

C4085-91087 Space Requirements 47Space Requirements Figure 2-1 Printer Space Requirements (Top view)Figure 2-2 Printer Space Requirements (Side view)4

48 Chapter 2 Site Requirements C4085-91087Figure 2-3 Printer Space Requirements (with 8-bin Mailbox and Input Device)35 in. (889 mm)14.5 in.(368 mm)66

C4085-91087 Environmental Requirements 49Environmental Requirements Keep the printer within the following environmental conditions for optimum perform

50 Chapter 2 Site Requirements C4085-91087

C4085-91087 Chapter Contents 513Operating Overview Chapter ContentsUsing the Control Panel - - - - - - - - - - - - - - - - - -52Res

vi C4085-91087

52 Chapter 3 Operating Overview C4085-91087Using the Control PanelControl Panel LayoutThe control panel contains a 2-line, 16-character-per-line displ

C4085-91087 Using the Control Panel 53Indicator Lights The control panel indicator lights are described in the following table. Table 3-2. Indicator

54 Chapter 3 Operating Overview C4085-91087Settings and Defaults The printer makes most printing decisions based on either temporary settings or facto

C4085-91087 Resetting the Printer 55Resetting the PrinterCold ResetCold Reset clears all data from the printer memory and sets all the defaults (excep

56 Chapter 3 Operating Overview C4085-91087Table 3-3. Factory Default SettingsDUPLEX= OFFAPPEND CR TO LF NOAUTO CONTINUE= ONCLEARABLE WARNINGS JOBCONF

C4085-91087 Resetting the Printer 57TONER DENSITY= 3TONER LOW= CONTINUETRAY 1 MODE FIRSTTRAY 2 TYPE PLAINTRAY 3 TYPE PLAINWIDE A4 NOTable 3-3. Factory

58 Chapter 3 Operating Overview C4085-91087Control Panel Menus Press MENU to cycle through the control panel menus. Each menu is described in a separa

C4085-91087 Control Panel Menus 59Information MenuThis menu contains printer information pages that give details about the printer and its configurati

60 Chapter 3 Operating Overview C4085-91087Paper Handling MenuWhen paper handling settings are correctly configured through the control panel, you can

C4085-91087 Control Panel Menus 61TRAY 5 TYPE=PLAINFor supported paper types, see page 4.Set the value to correspond with the paper type currently loa

C4085-91087 viiTable of Contents1 Product InformationPrinter Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

62 Chapter 3 Operating Overview C4085-91087Print Quality MenuSome items in this menu can be accessed from a software application, or from the printer

C4085-91087 Control Panel Menus 63ECONOMODE=OFF OFFONTurn EconoMode on (to save toner) or off (for high quality).EconoMode creates draft-quality print

64 Chapter 3 Operating Overview C4085-91087Printing MenuSome items in this menu can be accessed from a software application, or from the printer drive

C4085-91087 Control Panel Menus 65PCL FONT SOURCE=INTERNALINTERNALSOFTSLOT 1, 2, or 3INTERNAL: Internal fonts.SOFT: Permanent soft fonts.SLOT 1, 2, or

66 Chapter 3 Operating Overview C4085-91087PRINT PS ERRORS=OFFOFFONSelect ON to print the PS error page when PS errors occur.Table 3-7. Printing Menu

C4085-91087 Control Panel Menus 67Configuration MenuItems in this menu affect the printer’s behavior. Configure the printer according to your printing

68 Chapter 3 Operating Overview C4085-91087RESOURCE SAVE=OFFOFFONAUTOThis item dedicates printer memory to save each language’s permanent resources. (

C4085-91087 Control Panel Menus 69TONER LOW=CONTINUECONTINUESTOPThis item determines how the printer behaves when toner is low. The TONER LOW message

70 Chapter 3 Operating Overview C4085-91087I/O MenuItems in the I/O (input/output) Menu affect the communication between the printer and the computer.

C4085-91087 Control Panel Menus 71PARALLEL ADVFUNCTIONS=ONONOFFTurn the bidirectional parallel communication on or off. The default is set for a bidir