HP LaserJet 6L User Manual

Printed onRecycled Paper*C3990-90991**C3990-90991*C3990-90991HP LaserJet 5L and 6L PrinterService ManualCopyright© 1997Hewlett Packard Co.Printed in U

1Product InformationContentsPrinter Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Paper Capacities and

Pickup Roller Assembly1 Remove the Printer Covers.2 Remove the paper pickup gear (Figure 6-21).NoteThis gear is keyed to go on the shaft in only one w

4 Using needlenose pliers, pull the bottom of the bushing out (Figure 6-24, callout 1),then turn it counter clockwise to release it (Figure 6-24, call

To reinstallAfter placing the Pickup Roller shaft through on the left side, line up the IdlerRoller tabs while repositioning the right side. Rock the

Paper Feed Frame1 Remove the Printer Covers.2 Remove the Pickup Roller Assembly (Figures 6-23 through 6-24).3 Disconnect the following:• Solenoid from

4 Release the catch on the control panel cable guide by using the small flatheadscrewdriver to push on the tab (Figure 6-27). Then slide the guide off

5 Remove the self-tapping screw from the back sheet metal plate and lift it off (Figure6-28, callout 1).6 Remove the (4) hex head screws from the Pape

7 Release the sensor unit connector (Figure 6-29).Paper Feed Frame Removal (4 of 4)8 Verify that all cables are clear of the frame and pull the frame

Transfer Roller Guide & Transfer Roller1 Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 through 6-25),and Paper Feed Frame (Figur

Kick PlateCautionBe careful working with the Kick Plate and Separation Pad. The spring underneaththe Kick Plate may stay attached to the Kick Plate, b

To reinstallIf the spring on the Kick Plate doesn’t stay on the Kick Plate, replace the spring,making certain the diameter of the spring surrounds two

1-2 Product Information

Separation Pad1 Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 and 6-24), andKick Plate (Figure 6-31).2 Lift the bottom of the white

SubpadsNoteWhen you replace the Separation Pad, you should also replace the smaller subpadsat the same time.1 Place your index finger on the subpad.2

Feed AssemblyThe Feed Assembly is located in the Paper Feed Frame.1 Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 through 6-25),and

4 Remove the self-tapping screw that holds the Feed Assembly in place (Figure 6-36,callout 1).NoteBefore proceeding to Step 5, examine the tabs and ho

6 Turn the Feed Assembly over and place it in one hand with the roller-side down.Pop one of the tabs on the other side and the feed roller should fall

Bottom AssembliesMemory Door Guide1 Remove the Printer Covers.2 Remove any extra memory.3 Two tabs hold the memory door guide on the printer chassis.

Motor1 Remove the Printer Covers.2 Remove the motor connector (Figure 6-39, callout 1).3 Remove the memory door guide to expose the two motor screws.4

DC Controller1 Remove the Printer Covers.2 Disconnect the motor connector from the motor (Figure 6-39, callout 1).3 Disconnect the Solenoid connector

8 Lift the bottom plate, rotating the plate toward you from the back as if hinged on thefront. Release the Fusing Assembly connector (J206) (Figure 6-

9 Remove the (7) remaining connectors (Figure 6-42, callout 1).10 Remove the screws (5) that secure the DC Controller to the metal case (Figure 6-42,c

Printer FeaturesPaper Capacities and SizesFeatures DescriptionsPrint Speed 4 ppm (HP LaserJet 5L); 6 ppm (HP LaserJet 6L)Text & Graphics Resolutio

Formatter PCACautionESD SENSITIVE!1 Remove the Printer Covers and complete the DC Controller removal direction up tostep 8 (Figures 6-40 and 6-41).2 R

6 - 48 Removal and Replacement

7TroubleshootingContentsGeneral Troubleshooting Flowchart . . . . . . . . . . . . . . . . . . . . . . . 7-3Paper Path and Components . . .

7-2 Troubleshooting

General Troubleshooting FlowchartWhen the AC power is first applied to the printer:• Both the printer motor and the laser/scannermotor rotate for 6 se

General Troubleshooting Flowchart (continued)Refer to the section “Image FormationTroubleshooting,” later in this chapter.If the engine test produces

Paper Path and ComponentsPaper Path and ComponentsPS201PS203PS202SL1MotorFeed RollerFeedSubRollerPick-upRollerPaperRegistrationSensorPaperOutSensorPap

DC Controller DiagramDC Controller PCA ComponentsJ3 Control Panel Connector (FormatterPCA)J202 Paper Registration and Paper-OutPhotosensors (PS203 and

Printer Error TroubleshootingInformation regarding printer status is conveyed by two methods: 1) the printer’sControl Panel lights and 2) feedback th

Printer Status MessagesThe following table lists printer LED messages and their meanings and describesrecommended actions. For more information on the

IdentificationModel and SerialThe model number and serial numbers are listed on identification labels located onthe bottom of the printer. The model n

Occasionally you may add paper, close the printer door, add the toner cartridge, andclear a paper jam, only to find that the printer still displays an

Service and Error MessagesService errors prevent further printer operation until some action is taken. Whenthere is a service error, all of the lights

Heating Element Resistance CheckFigure 7-3LEDs Description Recommended ActionBeam Error. There are a number of causesfor this error, and some of the c

LEDs Description Recommended ActionScanner Error. Caused by a scannermalfunction.1. Power-cycle the printer by unplugging the printerand plugging it b

Image Formation TroubleshootingCheck the Toner CartridgeImage formation defects are many times the result of toner cartridge problems. Ifthere is any

Image Defect ExamplesThis section illustrates some image defects and their possible causes. Since there aremany variables in the printing process, you

Vertical LinesSometimes vertically aligned black streaks or smears can appear on successivepages.•The toner cartridge may be damaged. Replace it.•The

Character VoidsCharacter voids are white areas within the parts of characters that should be solidblack.•If you are using transparencies when you expe

DropoutsDropouts are characters that are partially printed.•The Paper Input Bin may have been loaded with too much paper. Make sure thatno more than 1

Blank Page (Occasional)A page is completely blank. If you get occasional blank pages:•Make sure your page length and margins are set correctly for the

HP LaserJet 6L Model and Serial NumbersFigure 1-21ProductInformationProduct Information 1-5

Dots•Clean the static charge eliminator. (See Chapter 4, “Printer Maintenance.")•There may be discontinuities in the high-voltage contact points.

Distorted Image or BD Failure•Make certain the printer is not facing the sunlight.•The paper may not meet HP’s paper specifications. Select different

Troubleshooting ChecksEngine TestThe engine test print is used to verify that the print engine is functioning correctly.The Formatter PCA is completel

Half-Self Test Functional CheckThe electrophotographic process can be subdivided into the following stages:• Cleaning (removing excess toner from drum

Drum Rotation Functional CheckThe photosensitive drum, located in the toner cartridge, must rotate for the printprocess to work. The photosensitive dr

High-Voltage Power Supply CheckThe High-Voltage Power Supply PCA provides the necessary voltages for theelectrophotographic processes. A method for ve

Toner Cartridge High Voltage Connection Points (2 of 2)• Charging (1)• Drum Ground (2)• Developing Roller (3)Figure 7-67TroubleshootingTroubleshooting

Paper CurlPaper curl is inherent to the laser printing processes, and occurs when paper issubjected to heat. Paper curl tends to relax as the paper co

Troubleshooting ToolsPaper Path CheckIf paper is not being picked up or is not moving through the paper path, you maywant to observe all of the paper

Repetitive Image Defect RulerRepetitive Image Defect RulerFigure 7-87-28 Troubleshooting

SpecificationsCategory SpecificationPrint Speed*: HP LaserJet 5LPrint Speed*: HP LaserJet 6L4 ppm6 ppmMonthly Usage (Duty Cycle): HP LaserJet 5LMonthl

Main Wiring DiagramFigure 7-9 Main Wiring Diagram7TroubleshootingTroubleshooting 7-29

Connector Signal Name RemarksJ401 pin 1 MA Motor Drive SignalJ401 pin 2 /MA Motor Drive SignalJ401 pin 3 MB Motor Drive SignalJ401 pin 4 /MB Motor Dri

Connector Signal Name RemarksJ209 pin 3 DOSNS “H” when cartridge is notinstalled or the front door isopen at PS204.J305 pin 1 +12A VJ305 pin 2 N/UJ305

7-32 Troubleshooting

8Parts and DiagramsContentsHow to Use the Part Lists and Diagrams . . . . . . . . . . . . . . . . . . . . 8-3Ordering Parts . . . . . . .

8-2 Parts and Diagrams

How to Use the Part Lists and DiagramsThe Figures in this chapter illustrate the major subassemblies in the printer and theircomponent parts. A table

Ordering ConsumablesConsumables and accessories such as those listed on Table 8-1 may be ordered fromHewlett-Packard.The phone numbers are:U.S.: 1-800

Accessories and SuppliesThe following items are available through your local authorized HP dealer. To find adealer near you (or if your dealer is temp

Common HardwareExample DescriptionScrew, Machine, Trus Head M3x4, M3x6, M3x8Screw, Star, 3x6Screw, Self-tap, 4x10Screw, Hex-head, 3x8Screw, Hexhead, 3

Product OverviewFront/Side Views of the Printer1. Paper Input Support 7. Front Panel Button 13. Front Output Slot (face-up)2. Paper Output Support 8.

Major Assembly LocationsFigure 8-18Parts andDiagramsParts and Diagrams 8-7

Covers and DoorsFigure 8-28-8 Parts and Diagrams

Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty Description1 RB1-7211-000CN RB2-1637-000CN 1 Input Extender 12 RB1-7212-000CN RB2-1638-000CN 1 Input

Internal Components (1 of 3)Figure 8-38-10 Parts and Diagrams

Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty Description1 RY7-5005-000CN RY7-5005-000CN 1 Gear Kit #12 RB1-7288-000CN RB1-7288-000CN 2 Exit Rolle

Internal Components (2 of 3)Figure 8-48-12 Parts and Diagrams

Ref LaserJet 5LPart No. LaserJet 6LPart No. Qty Description1 RB1-7109-000CN RB1-7109-000CN 1 Memory Door Guide2 RB1-7247-000CN RB1-7247-000CN 1 Fuser

Internal Components (3 of 3)Figure 8-58-14 Parts and Diagrams

Ref LaserJet 5LPart No. LaserJet 6LPart No. Qty Description1 RB1-7223-000CN RB1-7223-000CN 1 Pickup Roller Grounding Clip2 RB1-7246-000CN RB1-7246-000

DC Controller/Formatter and CablesFigure 8-68-16 Parts and Diagrams

Front Door Assemblies14. Paper Release Lever 16. Transfer Roller (do not touch)15. Toner Cartridge Compartment 17. EP DoorFigure 1-41-8 Product Inform

Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty Description1 RG5-2024-000CN RB2-1719-000CN 1 Formatter Shield2 C3942-67902 C3991-60001 1 Formatter,

Pickup Roller AssemblyFigure 8-78-18 Parts and Diagrams

Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty Description1 RB1-7177-000CN RB1-7177-000CN 1 Paper Feed Frame2 RY7-5008-000CN RY7-5008-000CN 1 Separ

Feed AssemblyFigure 8-88-20 Parts and Diagrams

Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty DescriptionRG5-1942-000CN RG5-3485-000CN 1 Feed Assembly9 RB1-7226-000CN RB2-1699-000CN 1 Idler Roll

Separation Guide AssemblyFigure 8-98-22 Parts and Diagrams

Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty DescriptionRG5-2013-000CN RG5-3475-000CN 1 Separation Guide Assembly2 RB1-7276-000CN RG5-3476-000CN

Delivery AssemblyFigure 8-108-24 Parts and Diagrams

Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty DescriptionRG5-2012-000CN RG5-3474-000CN 1 Delivery Assembly1 RB1-7284-000CN RB1-7284-000CN 4 Delive

8-26 Parts and Diagrams

Back View of the Printer18. Power Cable Connector 20. Memory Expansion Cover19. Parallel Cable ConnectorFigure 1-5 I1ProductInformationProduct Informa

AParts IndexParts Index A-1

Parts IndexDescription Part No. Fig. Ref.AC Cable Cover RB1-7344-000CN 8-4 3Back Cover (5L) RB1-7333-000CN 8-2 3Back Cover (6L) RB2-1636-000CN 8-2 3Ba

Description Part No. Fig. Ref.Door Switch Cable (5L) RG5-2037-000CN 8-6 14EP Door Assembly (5L) RF5-1501-030CN 8-2 8EP Door Assembly (6L) RF5-2352-000

Description Part No. Fig. Ref.Fuser Pressure Plate RF5-1517-000CN 8-5 5Fuser Release Kit RY7-5007-000CN 8-3 6Fuser Release Tab RB1-7105-000CN 8-3 3Fus

Description Part No. Fig. Ref.Left Pressure Roller Housing RB1-7255-000CN 8-5 13Main Cover (5L) RG5-1995-000CN 8-2 4Main Cover (6L) RG5-3443-000CN 8-2

Description Part No. Fig. Ref.Screw XA9-0724-000CN 8-2 11Screw (with star washer) XA9-0855-000CN 8-4 10Screw XB1-1300-807CN 8-4 502Screw XA9-0267-000C

Part No. Description Fig. Ref.C3941-69001 DC Controller PCA (110V) (Exchange) (5L) 8-6 3C3941-69002 DC Controller PCA (220V) (Exchange) (5L) 8-6 3C394

Part No. Description Fig. Ref.RB1-7288-000CN Exit Roller Bushing 8-3 2RB1-7289-000CN Fuser Roller Bushing (5L) 8-9 4RB1-7293-000CN Flag 8-5 18RB1-7294

Part No. Description Fig. Ref.RF5-1514-000CN EP Left Hand Guide 8-5 10RF5-1515-000CN EP Right Hand Guide #1 8-5 9RF5-1516-000CN Pressure Roller (5L) 8

Part No. Description Fig. Ref.RG5-2031-000CN Door Sensor Cable (5L) 8-6 9RG5-2032-000CN Thermistor Cable 8-6 10RG5-2033-000CN Motor Cable 8-6 11RG5-20

Service ApproachRepair of the printer normally begins with the use of the printer’s internaldiagnostics in conjunction with the troubleshooting proced

Part No. Description Fig. Ref.RY7-5006-000CN Gear Kit #2 (5L) 8-3 8RY7-5007-000CN Fuser Release Assembly 8-3 6RY7-5008-000CN Seperation Pad Kit 8-7 2R

A-12 Parts Index

BRegulatory InformationLaser Safety (U.S.A.)The Center for Devices and Radiological Health (CDRH) of the U.S. Food andDrug Administration implemented

Laser Statement (Finland)The following applies to printer operation and servicing in Finland.LASERTURVALLISUUSLUOKAN 1 LASERLAITEKLASS 1 LASER APPARAT

Toner SafetyNoteIn case of toner spills, skin and clothing are best cleaned by removing as much toneras possible with a dry tissue, then washing with

FCC Statement (Class B)Note: This equipment has been tested and found to comply with the limits for aClass B digital device, pursuant to part 15 of th

CService NotesFuser Accordian JamsC3941A-01SERVICE NOTESUPERSEDES: NONEHP C3941A LaserJet 5LSerial Numbers: <JPBB022333<JPTB000101<JPBJ041310

To remove the paper jam the fuser area of the printer must be disassembled. Fusersand pressure rollers should be checked for damage from the paper jam

Fuser Jam Clearing CountermeasureC3941A-02ASERVICE NOTESUPERSEDES: C3941A-02HP C3941A LaserJet 5LSerial Numbers:JPBK000000 / JPBK016388JPBL000000 / JP

To remove this type of paper jam the fuser area of the printer must be disassembled.The fuser and pressure roller should be checked for damage from th

Service ManualHP LaserJet 5L HP LaserJet 6L(C3941A) (C3990A)

Description Part Number PDO PCE HPDHP LaserJet Family Quick ReferenceService Guide5021-0369 X XHP LaserJet 5L PrinterUser’s ManualC3941-90901 XHP Lase

IndexAAC power distribution 5-6circuitry 5-6accessories and supplies 8-5acoustic emissions 1-6assistance, technical 1-12Bbackground scatter 7-16bl

standard 1-3internal assemblies 8-10, 8-12, 8-14control panel 6-11delivery assembly 6-13exit roller assembly 6-12face-up/face-down lever 6-21fuser

PRNT 5-19STBY 5-19WAIT 5-19printingself test page 3-7priority of errors 7-7PRNT, printer timing 5-19product information 1-1 to 1-16, 3-1 to3-12prod

warning messages 6-3warrantyexclusions 1-14limitations 1-15start date 1-15voltage 1-15warranty 1-14wiring diagram 7-29wiring diagrams, main 7-2

Printed onRecycled Paper*C3990-90991**C3990-90991*C3990-90991HP LaserJet 5L and 6L PrinterService ManualCopyright© 1997Hewlett Packard Co.Printed in U

Technical AssistanceOnline Services: for24-hour access toinformation over yourmodem, we suggest theseservices.World Wide Web URL—Printer drivers, upda

Worldwide SupportU.S. and Canada:Customer Support &Product Repair Assistance(Please refer to thewarranty chapter of thismanual for additionalprodu

WarrantyThis warranty gives you specific legal rights. You may also have other rights, whichmay vary from area to area.Hewlett-Packard warrants the 5L

If you are using a mechanical switchbox, ensure that it is equipped with a surgeprotector. Damage to your printer could occur from the use of unprotec

1-16 Product Information

2Site RequirementsContentsSite Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3Operating Environment .

2 -2 Site Requirements

Site RequirementsOperating EnvironmentThe environmental requirements listed in the table below must be maintained toensure the proper operation of thi

Printer Space RequirementsPrinter Space RequirementsFigure 2-1Description DimensionWidth 13.2 in. (335.5 mm)Depth 12.3 in. (311.2 mm)Height (storage)(

© Copyright Hewlett-PackardCompany 1997All Rights Reserved.Reproduction, adaptation, ortranslation without priorwritten permission isprohibited, excep

The HP C3906A/F Toner CartridgeToner cartridges contain components that are sensitive to light, temperature, andhumidity. Follow the recommendations i

Toner Cartridge Handling Suggestions• Before installing a cartridge, distribute the toner evenly by rotating the cartridgeback and forth five to six t

3Operating OverviewContentsUsing the Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3Control Panel Layout .

3-2 Operating Overview

Using the Control PanelControl Panel LayoutThe Control Panel consists of three status lights and a Front Panel Button located atthe front of the print

LED LightsThe LED lights provide a quick way to check the printer’s status.When this Indicator: Looks likethis:It means this: Do this:OnBlinkingReady

When this indicator: Looks likethis:It means this: Do this:Blinking Error (light blinking) Page TooComplexThe page may be too complexfor the printer’s

The Front Panel ButtonDepending on what state the printer is in, pressing the Front Panel Button allowsyou to control printing tasks by either startin

Printing a Self-Test PageA self-test page can be useful in troubleshooting printer problems and determiningwhich fonts have been downloaded to the pri

Self-test Page for HP LaserJet 6LThe self-test page lists the current printer configuration. (If any fonts have beendownloaded to the printer a second

ConventionsThis manual uses the following conventions:Color is used to emphasize items which are important to the material underdiscussion.The names o

Continuous Self TestA continuous self test can be useful for troubleshooting paper path and otherproblems. To print a continuous self test:1 Disconnec

Printing an Engine TestThe engine test print can be used to verify that the print engine is functioningcorrectly. The Formatter PCA is completely bypa

Resetting the PrinterResetting the printer accomplishes the following:• Clears all data from the printer’s memory (including unprinted data, downloade

3-12 Operating Overview

4Printer MaintenanceContentsLife Expectancy of Consumables . . . . . . . . . . . . . . . . . . . . . . . . 4-3Toner Cartridge Life . . . .

4-2 Printer Maintenance

Life Expectancy of ConsumablesAlways inspect the components listed in Table 4-1 for wear when servicing theprinter. Replace these components as needed

Toner Cartridge LifeThe toner cartridge has been designed to simplify the replacement of the printer’smajor “consumable” parts. The toner cartridge co

proofs. EconoMode can be set through your printer driver. See Chapter 3 forinformation.NotesSome software applications may refer to this as “draft mod

Cleaning the PrinterTo maintain the print quality, thoroughly clean the printer:• Every time you change the toner cartridge.• After printing approxima

Chapter Descriptions1 Product InformationOrientation to the printer, as well as the service and repair philosophy, is discussed.Information on obtaini

Cleaning Printer ComponentsCAUTIONTo avoid permanent damage to the toner cartridge, do not use ammonia-basedcleaners on or around the printer. Do not

Static Eliminator Teeth (located in front of the transfer roller)Cleaning Spilled TonerDefective toner cartridges can develop leaks. In addition, afte

5Functional OverviewContentsBasic Printer Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3DC Controller/Power Sys

5 - 2 Functional Overview

Basic Printer FunctionsThis chapter presents a generalized functional overview of the printer and theprinting processes. The following printer systems

DC Controller/Power SystemThe DC Controller PCA coordinates all print engine activities, drives the laser, andcoordinates print data from the Formatte

Print Engine Control SystemLaser and Scanner DriveBased on information received from the Formatter, the DC Controller sends signalsto the Laser/Scanne

Power System (on DC Controller PCA)The AC, DC, and high voltage power supply circuits are all contained within the DCController PCA.AC Power Distribut

The printer exits SleepMode and all of the lights power on when any of thefollowing occur:• A job is received.• The Front Panel Button is pressed.• Th

Formatter SystemThe Formatter PCA is responsible for the following:• Receiving and processing print data from the printer interface.• Monitoring Front

List of FiguresFigure 1-1 HP LaserJet 5L Model and Serial Numbers . . . . . . . . . . . . 1-4Figure 1-2 HP LaserJet 6L Model and Serial Numbers .

Control PanelStatus LED LightsThe Formatter uses three LEDs mounted under the printer cover to communicateprinter status to the user. Refer to “Using

EconoModeThe EconoMode setting uses approximately 50% less toner than standard modeprinting by reducing the dot density. However, EconoMode does not e

Enhanced I/OThe Enhanced I/O feature allows printer memory to be used for storing datareceived from the host computer. When Enhanced I/O is enabled, y

Image Formation SystemLaser printing requires the interaction of several different technologies (such aselectronics, optics, and electrophotographics)

Toner CartridgeAs the “heart” of the Image Formation System, the toner cartridge houses thecleaning, conditioning, and developing steps of the process

Step 4: Image DevelopingAt this stage of the process, the latent electrostatic image is present on the drum.The toner particles obtain a negative surf

Paper Feed SystemBoth the Paper Input Bin and the Single Sheet Input Slot merge into one, main inputarea. Paper placed in either of these areas enable

Figure 5-5 shows a simplified paper path and the locations of the photosensors androllers.Simplified Paper PathFigure 5-55 - 16 Functional Overview

Figure 5-6 shows the locations of the photosensors, switches, solenoid, and otherimportant printer elements. Table 5-1 describes the function of each

Paper Jam DetectionThe Paper Out Sensor (PS202), Paper Registration Sensor (PS203), and the PaperExit Sensor (PS201) detect when paper is moving throu

Figure 6-24 Pickup Roller Assembly Removal (2 of 2) . . . . . . . . . . . 6-28Figure 6-25 Paper Pickup Roller Assembly Replacement (Inside/Front

Basic Sequence of OperationThe Formatter PCA and the DC Controller PCA share information during printeroperation. The DC Controller-to-Formatter Conne

General Timing Diagram - HP LaserJet 5LFigure 5-75 - 20 Functional Overview

General Timing Diagram - HP LaserJet 6LFigure 5-85FunctionalOverviewFunctional Overview 5 - 21

5 - 22 Functional Overview

6Removal and ReplacementContentsRemoval and Replacement Strategy . . . . . . . . . . . . . . . . . . . . . . . 6-3Required Tools . . . .

6 - 2 Removal and Replacement

Removal and Replacement StrategyThis chapter documents removal and replacement of Field Replaceable Units(FRUs) only. Exchange assemblies should be se

Required Tools• #2 Phillips screwdriver with a magnetic tip• 5.5 mm hexhead nutdriver• small flathead screwdriver• needlenose pliersCautionA Posidriv

Installing Memory Cards (DRAM)1 Unplug the power cord from the printer. Youshould not install a memory card while theprinter is in SleepMode.2 Open th

Covers and DoorsBack Cover1 Unplug the power cord and remove the parallel cable from the back of the printer.2 Remove the toner cartridge.3 Lift the I

List of TablesTable 1-1 Printer Features . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Table 1-2 Paper Capacities and Sizes . .

5 Separate the rear panel from the main cover, pulling the lower corners away fromthe printer first. Then, insert the small flathead screwdriver into

EP Door Assembly1 Unplug the power cord and remove the parallel cable from the back of the printer.2 Open the EP door.3 Remove the toner cartridge.4 A

Memory Door1 Unplug the power cord and remove the parallel cable from the back of the printer.2 Remove the toner cartridge.3 Gently tip the printer on

Main Cover and Paper Input Assembly1 Remove the toner cartridge.2 Remove memory door.CautionRemove the memory door first. The door will break if you r

Internal AssembliesControl Panel1 Remove the Printer Covers.2 Use the needlenose pliers to release the Control Panel connector (Figure 6-7,callout 1).

Exit Roller Assembly1 Remove Printer Covers.2 Grasp both tabs at the lower ends of the Exit Roller bushings and pull inward. Thiswill release the tabs

Delivery Assembly1 Remove the Printer Covers and Exit Roller Assembly.2 Remove the EP Right-Hand assembly by pressing the tab in (Figure 6-9, callout

3 Use the magnetic screwdriver to remove the (2) screws (Figure 6-10, callout 1).Once the screws have been removed, rotate the rear of the Delivery As

Fuser Pressure Plate1 Remove Printer Covers and Delivery Assembly (Figures 6-9 and 6-10).2 Remove the (2) screws (Figure 6-11, callout 1).3 Press the

To reinstall:The Fuser Pressure Plate is kept in place by four locking mechanisms in eachcorner. Place the rear slits in the plate over the rear brack

viii

Heating Element1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), and FuserPressure Plate (Figure 6-11).2 Remove the wire cover (on th

3 Disconnect the AC voltage to the Heating Element by releasing the connectorlocated on the DC Controller. Press down on the connector release with a

4 Remove the wire from the wire guides along the right-side of the printer.5 Disconnect the thermistor feedback connector in the left front side of th

Pressure Roller1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), Fuser PressurePlate (Figure 6-11), and Heating Element (Figures 6-13

Face-Up/Face-Down Lever1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), Fuser PressurePlate (Figure 6-11), and Heating Element (Figu

Fuser Exit Roller Assembly1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), Fuser PressurePlate (Figure 6-11), and Heating Element (F

Paper Exit Sensor Flag1 Remove the Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), and FuserPressure Plate (Figure 6-11).CautionBefore proce

Top AssembliesLaser/Scanner Assembly1 Remove the Printer Covers.2 Remove both Laser/Scanner connectors (Figure 6-20, callout 1).3 Remove all (4) screw

Solenoid1 Remove the Printer Covers.2 On the left side of the printer, remove the paper pickup gear (Figure 6-21, callout 1)by pressing the tabs in th

3 Remove the Solenoid connector (J204) from the DC Controller (Figure 6-22,callout 1).4 Remove the self-tapping screw that holds the Solenoid in place