HP Color Laserjet M175 service manual

LASERJET PRO 100 COLOR MFP M175

Service Manual

HP LaserJet Pro 100 color MFP M175

Service Manual

Trademark Credits

Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.

The information contained herein is subject to change without notice.

The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

Part number: CE865-90968

Edition 1, 4/2011

Microsoft®, Windows®, Windows® XP, and Windows Vista® are U.S. registered trademarks of Microsoft Corporation.

Conventions used in this guide

TIP: Tips provide helpful hints or shortcuts.

NOTE: Notes provide important information to explain a concept or to complete a task.

CAUTION: Cautions indicate procedures that you should follow to avoid losing data or damaging

the product.

WARNING! Warnings alert you to specific procedures that you should follow to avoid personal

injury, catastrophic loss of data, or extensive damage to the product.

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iv Conventions used in this guide ENWW

Table of contents

1 Removal and replacement ................................................................................................ 1

Introduction ............................................................................................................................. 2

Removal and replacement strategy ............................................................................................. 2

Electrostatic discharge .............................................................................................................. 3

Required tools .......................................................................................................................... 3

Service approach ..................................................................................................................... 4

Before performing service .......................................................................................... 4

After performing service ............................................................................................. 4

Post-service test ......................................................................................................... 4

Product verification test ............................................................................... 4

Parts removal order ................................................................................................... 5

Removal and replacement procedures ........................................................................................ 7

Print cartridges .......................................................................................................... 7

Imaging drum ........................................................................................................... 9

Input tray ............................................................................................................... 11

Secondary transfer roller .......................................................................................... 12

Separation pad assembly ......................................................................................... 13

Pickup roller ........................................................................................................... 14

Remove the pickup roller assembly ............................................................. 15

Covers and document feeder .................................................................................... 16

Right cover .............................................................................................. 16

Left cover ................................................................................................ 17

Document feeder ...................................................................................... 18

Remove the document feeder ...................................................... 18

Document feeder hinges ............................................................................ 21

Remove the document feeder hinges ............................................ 21

Top door, rear-top cover, and delivery cover ............................................... 22

Remove the top door, rear-top cover, and delivery cover ................ 22

Reinstall the top door, rear-top cover, and delivery cover ............... 25

Rear door assembly .................................................................................. 27

Remove the rear door assembly .................................................. 27

Rear-lower cover ...................................................................................... 28

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Remove the rear-lower cover ....................................................... 28

Control panel .......................................................................................... 29

Remove the control panel ........................................................... 29

Left-front cover ......................................................................................... 31

Remove the left-front cover .......................................................... 31

Front door ............................................................................................... 33

Remove the front door ................................................................ 33

Inner cover .............................................................................................. 35

Remove the inner cover .............................................................. 35

Main assemblies ..................................................................................................... 38

Formatter PCA (base model) ...................................................................... 38

Remove the formatter PCA (base model) ....................................... 38

Formatter and wireless PCA (plus model) ..................................................... 40

Remove the formatter and wireless PCA (plus model) ..................... 40

Fuser power supply .................................................................................. 42

Remove the fuser power supply ................................................... 42

ITB assembly ............................................................................................ 43

Remove the ITB assembly ............................................................ 43

Fuser delivery assembly ............................................................................ 53

Remove the fuser delivery assembly ............................................. 54

Engine controller assembly ........................................................................ 58

Remove the engine controller assembly ........................................ 58

Low-voltage power supply assembly ........................................................... 63

Remove the low-voltage power supply assembly ............................ 63

Document feeder components ................................................................................... 69

Document feeder input tray ........................................................................ 69

Document feeder cover ............................................................................. 70

Document feeder core ............................................................................... 72

Remove the document feeder core ............................................... 72

Post scan pinch rollers .............................................................................. 74

Remove the post scan pinch rollers .............................................. 74

Document feeder base assembly ................................................................ 75

Remove the document feeder base assembly ................................ 75

2 Solve problems ............................................................................................................... 77

Solve problems checklist ......................................................................................................... 78

Step 1: Test print functionality ................................................................................... 78

Step 2: Test copy functionality .................................................................................. 78

Menu map ............................................................................................................................ 79

Troubleshooting processes ....................................................................................................... 80

Determine the problem source ................................................................................... 80

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Power subsystem ..................................................................................................... 81

Power-on checks ...................................................................................... 81

Tools for troubleshooting ......................................................................................................... 82

Component diagnostics ............................................................................................ 82

Component tests ....................................................................................... 82

Control-panel tests ..................................................................... 82

Diagrams ............................................................................................................... 83

Locations of connectors ............................................................................. 83

Locations of major components .................................................................. 84

General timing chart ................................................................................. 86

General circuit diagram ............................................................................ 87

Internal print-quality test pages .................................................................................. 88

Print a Diagnostics Page ........................................................................... 88

Interpret the Print Quality Page ................................................................... 89

Print-quality troubleshooting tools .............................................................................. 90

Repetitive image defects ruler .................................................................... 90

Calibrate the product ................................................................................ 90

Control panel menus ................................................................................................ 91

Setup menu ............................................................................................. 91

Reports menu ............................................................................ 91

System Setup menu .................................................................... 91

Service menu ............................................................................ 94

Network Setup menu (network models only) ................................. 94

Function specific menus ............................................................................. 95

Copy Menu .............................................................................. 95

Service mode functions ........................................................................................................... 97

Service menu/Secondary service menu ...................................................................... 97

Service menu ........................................................................................... 97

Secondary service menu ........................................................................... 97

Open the secondary service menu ............................................... 97

Secondary service menu structure ................................................ 98

Product resets ......................................................................................................... 99

Restore factory settings .............................................................................. 99

NVRAM initialization ................................................................................ 99

Product updates ..................................................................................................................... 99

3 Parts and diagrams ...................................................................................................... 101

Order parts by authorized service providers ............................................................................ 102

Order replacement parts ........................................................................................ 102

Related documentation and software ....................................................................... 102

Supplies part numbers ........................................................................................... 102

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Service parts ........................................................................................................ 103

Whole-unit replacement part numbers ...................................................................... 103

How to use the parts lists and diagrams .................................................................................. 104

Assembly locations ............................................................................................................... 105

Base product (no optional trays or accessories) ......................................................... 105

Covers, panels, and doors .................................................................................................... 106

Internal assembly ................................................................................................................. 108

Internal assembly .................................................................................................. 108

PCAs .................................................................................................................................. 110

Scanner and document feeder (ADF) main assemblies .............................................................. 112

Document feeder internal components .................................................................................... 114

Alphabetical parts list ........................................................................................................... 116

Numerical parts list .............................................................................................................. 119

Appendix A Service and support ..................................................................................... 123

Hewlett-Packard limited warranty statement ............................................................................. 124

HP's Premium Protection Warranty: LaserJet print cartridge limited warranty statement .................. 126

HP's LaserJet imaging drum limited warranty statement for replacement imaging drums ................ 127

Data stored on the print cartridge and imaging drum ............................................................... 128

End User License Agreement .................................................................................................. 129

OpenSSL ............................................................................................................................. 131

Customer self-repair warranty service ..................................................................................... 132

Customer support ................................................................................................................. 132

Repack the product .............................................................................................................. 133

Appendix B Specifications ................................................................................................ 135

Physical specifications .......................................................................................................... 136

Power consumption, electrical specifications, and acoustic emissions .......................................... 136

Environmental specifications .................................................................................................. 136

Appendix C Regulatory information ................................................................................. 137

FCC regulations ................................................................................................................... 138

Declaration of conformity (base models) ................................................................................. 139

Declaration of conformity (wireless models) ............................................................................. 141

Certificate of Volatility .......................................................................................................... 143

Safety statements ................................................................................................................. 144

Laser safety .......................................................................................................... 144

Canadian DOC regulations .................................................................................... 144

VCCI statement (Japan) .......................................................................................... 144

Power cord instructions .......................................................................................... 144

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Power cord statement (Japan) ................................................................................. 144

EMC statement (Korea) .......................................................................................... 145

Laser statement for Finland ..................................................................................... 145

GS statement (Germany) ........................................................................................ 145

Substances Table (China) ....................................................................................... 146

Restriction on Hazardous Substances statement (Turkey) ............................................. 146

Additional statements for wireless products .............................................................................. 147

FCC compliance statement—United States ................................................................ 147

Australia statement ................................................................................................ 147

Brazil ANATEL statement ........................................................................................ 147

Canadian statements ............................................................................................. 147

European Union regulatory notice ........................................................................... 147

Notice for use in France ......................................................................................... 148

Notice for use in Russia ......................................................................................... 148

Korean statement .................................................................................................. 148

Taiwan statement .................................................................................................. 148

Index ............................................................................................................................... 149

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List of tables

Table 2-1 External covers and doors (base) ............................................................................................ 85

Table 2-2 Service menu ..................................................................................................................... 97

Table 2-3 Secondary service menu ........................................................................................................ 98

Table 3-1 Order parts, accessories, and supplies .................................................................................. 102

Table 3-2 Related documentation and software .................................................................................... 102

Table 3-3 Supplies part numbers ......................................................................................................... 102

Table 3-4 Whole-unit replacement part numbers ................................................................................... 103

Table 3-5 Base product ..................................................................................................................... 105

Table 3-6 Covers, panels, and doors ................................................................................................... 107

Table 3-7 Internal assembly) ............................................................................................................... 109

Table 3-8 PCAs ................................................................................................................................ 111

Table 3-9 Scanner and document feeder main assemblies ..................................................................... 113

Table 3-10 Document feeder assembly parts ........................................................................................ 115

Table 3-11 Alphabetical parts list ....................................................................................................... 116

Table 3-12 Numerical parts list ........................................................................................................... 119

Table B-1 Physical specifications

Table B-2 Environmental specifications ................................................................................................ 136

........................................................................................................ 136

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List of figures

Figure 1-1 Phillips and Pozidriv screwdriver comparison ............................................................................ 3

Figure 1-2 Parts removal order (base) ...................................................................................................... 5

Figure 1-3 Parts removal order (document feeder) ..................................................................................... 6

Figure 1-4 Remove the tray .................................................................................................................. 11

Figure 1-5 Remove the secondary transfer roller ...................................................................................... 12

Figure 1-6 Remove the separation pad assembly (1 of 1) ......................................................................... 13

Figure 1-7 Remove the pickup roller assembly (1 of 2) ............................................................................. 15

Figure 1-8 Remove the pickup roller assembly (2 of 2) ............................................................................. 15

Figure 1-9 Remove the right cover (1 of 2) ............................................................................................. 16

Figure 1-10 Remove the right cover (2 of 2) ........................................................................................... 16

Figure 1-11 Remove the left cover (1 of 2) ............................................................................................. 17

Figure 1-12 Remove the left cover (2 of 2) ............................................................................................. 17

Figure 1-13 Remove the document feeder (1 of 4) ................................................................................... 18

Figure 1-14 Remove the document feeder (2 of 4) ................................................................................... 19

Figure 1-15 Remove the document feeder (3 of 4) ................................................................................... 19

Figure 1-16 Remove the document feeder (4 of 4) ................................................................................... 20

Figure 1-17 Remove the scanner hinges (1 of 2) ..................................................................................... 21

Figure 1-18 Remove the scanner hinges (2 of 2) ..................................................................................... 21

Figure 1-19 Remove the top door, rear-top cover, and delivery cover (1 of 6) ............................................ 22

Figure 1-20 Remove the top door, rear-top cover, and delivery cover (2 of 6) ............................................ 23

Figure 1-21 Remove the top door, rear-top cover, and delivery cover (3 of 6) ............................................ 23

Figure 1-22 Remove the top door, rear-top cover, and delivery cover (4 of 6) ............................................ 24

Figure 1-23 Remove the top door, rear-top cover, and delivery cover (5 of 6) ............................................ 24

Figure 1-24 Remove the top door, rear-top cover, and delivery cover (6 of 6) ............................................ 25

Figure 1-25 Reinstall the top door, rear-top cover, and delivery cover (1 of 2) ............................................ 25

Figure 1-26 Reinstall the top door, rear-top cover, and delivery cover (1 of 2) ............................................ 26

Figure 1-27 Remove the rear door assembly (1 of 2) ............................................................................... 27

Figure 1-28 Remove the rear door assembly (2 of 2) ............................................................................... 27

Figure 1-29 Remove the rear-lower cover ............................................................................................... 28

Figure 1-30 Remove the control panel (1 of 3) ........................................................................................ 29

Figure 1-31 Remove the control panel (2 of 3) ......

Figure 1-32 Remove the control panel (3 of 3) ........................................................................................ 30

.................................................................................. 30

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Figure 1-33 Remove the left-front cover (1 of 2) ...................................................................................... 31

Figure 1-34 Remove the left-front cover (2 of 2) ...................................................................................... 32

Figure 1-35 Remove the front door (1 of 2) ............................................................................................ 33

Figure 1-36 Remove the front door (2 of 3) ............................................................................................ 34

Figure 1-37 Remove the inner cover (1 of 4) .......................................................................................... 35

Figure 1-38 Remove the inner cover (2 of 4) .......................................................................................... 36

Figure 1-39 Remove the inner cover (3 of 4) .......................................................................................... 36

Figure 1-40 Remove the inner cover (4 of 4) .......................................................................................... 37

Figure 1-41 Remove the formatter PCA (base model; 1 of 2) .................................................................... 38

Figure 1-42 Remove the formatter PCA (base model; 2 of 2) .................................................................... 39

Figure 1-43 Remove the formatter and wireless PCA (plus model; 1 of 3) ................................................... 40

Figure 1-44 Remove the formatter and wireless PCA (plus mode; 2 of 3) ................................................... 40

Figure 1-45 Remove the formatter and wireless PCA (plus mode; 3 of 3) ................................................... 41

Figure 1-46 Remove the fuser power supply (1 of 2) ............................................................................... 42

Figure 1-47 Remove the fuser power supply (2 of 2) ............................................................................... 42

Figure 1-48 Remove the ITB assembly (1 of 17) ...................................................................................... 43

Figure 1-49 Remove the ITB assembly (2 of 17) ...................................................................................... 44

Figure 1-50 Remove the ITB assembly (3 of 17) ...................................................................................... 44

Figure 1-51 Remove the ITB assembly (4 of 17) ...................................................................................... 45

Figure 1-52 Remove the ITB assembly (5 of 17) ...................................................................................... 45

Figure 1-53 Remove the ITB assembly (6 of 17) ...................................................................................... 46

Figure 1-54 Remove the ITB assembly (7 of 17) ...................................................................................... 46

Figure 1-55 Remove the ITB assembly (8 of 17) ...................................................................................... 47

Figure 1-56 Remove the ITB assembly (9 of 17) ...................................................................................... 48

Figure 1-57 Remove the ITB assembly (10 of 17) .................................................................................... 48

Figure 1-58 Remove the ITB assembly (11 of 17) .................................................................................... 49

Figure 1-59 Remove the ITB assembly (12 of 17) .................................................................................... 49

Figure 1-60 Remove the ITB assembly (13 of 17) .................................................................................... 50

Figure 1-61 Remove the ITB assembly (14 of 17) .................................................................................... 50

Figure 1-62 Remove the ITB assembly (15 of 17) .................................................................................... 51

Figure 1-63 Remove the ITB assembly (16 of 17) .................................................................................... 51

Figure 1-64 Remove the ITB assembly (17 of 17) .................................................................................... 52

Figure 1-65 Remove the fuser delivery assembly (1 of 6) .......................................................................... 54

Figure 1-66 Remove the fuse

Figure 1-67 Remove the fuser delivery assembly (3 of 6) .......................................................................... 55

Figure 1-68 Remove the fuser delivery assembly (4 of 6) .......................................................................... 55

Figure 1-69 Remove the fuser delivery assembly (5 of 6) .......................................................................... 56

Figure 1-70 Remove the fuser delivery assembly (6 of 6) .......................................................................... 56

Figure 1-71 Reinstall the fuser delivery assembly (1 of 2) ......................................................................... 57

Figure 1-72 Reinstall the fuser delivery assembly (2 of 2) ......................................................................... 57

Figure 1-73 Remove the engine controller assembly (1 of 7) ..................................................................... 58

r delivery assembly (2 of 6) .......................................................................... 54

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Figure 1-74 Remove the engine controller assembly (2 of 7) ..................................................................... 59

Figure 1-75 Remove the engine controller assembly (3 of 7) ..................................................................... 59

Figure 1-76 Remove the engine controller assembly (4 of 7) ..................................................................... 60

Figure 1-77 Remove the engine controller assembly (5 of 7) ..................................................................... 60

Figure 1-78 Remove the engine controller assembly (6 of 7) ..................................................................... 61

Figure 1-79 Remove the engine controller assembly (7 of 7) ..................................................................... 61

Figure 1-80 Installing a replacement engine controller assembly ............................................................... 62

Figure 1-81 Remove the low-voltage power supply assembly (1 of 9) ........................................................ 63

Figure 1-82 Remove the low-voltage power supply assembly (2 of 9) ........................................................ 64

Figure 1-83 Remove the low-voltage power supply assembly (3 of 9) ........................................................ 64

Figure 1-84 Remove the low-voltage power supply assembly (4 of 9) ........................................................ 65

Figure 1-85 Remove the low-voltage power supply assembly (5 of 9) ........................................................ 65

Figure 1-86 Remove the low-voltage power supply assembly (6 of 9) ........................................................ 66

Figure 1-87 Remove the low voltage power supply assembly (7 of 9) ........................................................ 66

Figure 1-88 Remove the low-voltage power supply assembly (8 of 9) ........................................................ 67

Figure 1-89 Remove the low-voltage power supply assembly (9 of 9) ........................................................ 67

Figure 1-90 Reinstall the low-voltage power supply ................................................................................. 68

Figure 1-91 Installing a replacement low-voltage power supply ................................................................ 68

Figure 1-92 Remove the document feeder input tray (1 of 2) .................................................................... 69

Figure 1-93 Remove the document feeder input tray (2 of 2) .................................................................... 69

Figure 1-94 Remove the document feeder cover (1 of 3) .......................................................................... 70

Figure 1-95 Remove the document feeder cover (2 of 3) .......................................................................... 70

Figure 1-96 Remove the document feeder cover (3 of 3) .......................................................................... 71

Figure 1-97 Remove the document feeder core (1 of 4) ........................................................................... 72

Figure 1-98 Remove the document feeder core (2 of 4) ........................................................................... 72

Figure 1-99 Remove the document feeder core (3 of 4) ........................................................................... 73

Figure 1-100 Remove the document feeder core (4 of 4) ......................................................................... 73

Figure 1-101 Remove the post scan pinch rollers .................................................................................... 74

Figure 1-102 Remove the document feeder base assembly (1 of 3) ........................................................... 75

Figure 1-103 Remove the document feeder base assembly (2 of 3) ........................................................... 76

Figure 1-104 Remove the document feeder base assembly (3 of 3) ........................................................... 76

Figure 2-

Figure 2-2 Cross section view ............................................................................................................... 84

Figure 2-3 External covers and doors (base) ........................................................................................... 85

Figure 2-4 General timing diagram ....................................................................................................... 86

Figure 2-5 General circuit diagram ....................................................................................................... 87

Figure 2-6 Diagnostics Page ................................................................................................................. 88

Figure 3-1 Base product (no optional trays or accessories) ..................................................................... 105

Figure 3-2 Covers, panels, and doors ................................................................................................. 106

Figure 3-3 Internal assembly ............................................................................................................... 108

Figure 3-4 PCAs ............................................................................................................................... 110

1 Locations of connectors ........................................................................................................ 83

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Figure 3-5 Scanner and document feeder main assemblies .................................................................... 112

Figure 3-6 Document feeder assembly parts ......................................................................................... 114

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1 Removal and replacement

Introduction

●

Removal and replacement strategy

●

Electrostatic discharge

●

Required tools

●

Service approach

●

Removal and replacement procedures

●

ENWW 1

Introduction

This chapter describes the removal and replacement of field-replaceable units (FRUs) only.

Replacing FRUs is generally the reverse of removal. Occasionally, notes and tips are included to provide directions for difficult or critical replacement procedures.

HP does not support repairing individual subassemblies or troubleshooting to the component level.

Note the length, diameter, color, type, and location of each screw. Be sure to return each screw to its original location during reassembly.

Incorrectly routed or loose wire harnesses can interfere with other internal components and can become damaged or broken. Frayed or pinched harness wires can be difficult to find. When replacing wire harnesses, always use the provided wire loops, lance points, or wire-harness guides and retainers.

Removal and replacement strategy

WARNING! Turn the product off, wait 5 seconds, and then remove the power cord before

attempting to service the product. If this warning is not followed, severe injury can result, in addition to damage to the product. The power must be on for certain functional checks during troubleshooting. However, disconnect the power supply during parts removal.

Never operate or service the product with the protective cover removed from the laser/scanner assembly. The reflected beam, although invisible, can damage your eyes.

The sheet-metal parts can have sharp edges. Be careful when handling sheet-metal parts.

CAUTION: Do not bend or fold the flat flexible cables (FFCs) during removal or installation. Also, do

not straighten pre-folds in the FFCs. You must fully seat all FFCs in their connectors. Failure to fully seat an FFC into a connector can cause a short circuit in a PCA.

NOTE: To install a self-tapping screw, first turn it counterclockwise to align it with the existing thread

pattern, and then carefully turn it clockwise to tighten. Do not overtighten. If a self-tapping screw-hole becomes stripped, repair the screw-hole or replace the affected assembly.

TIP: For clarity, some photos in this chapter show components removed that would not be removed to

service the product. If necessary, remove the components listed at the beginning of a procedure before proceeding to service the product.

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Electrostatic discharge

CAUTION: Some parts are sensitive to electrostatic discharge (ESD). Look for the ESD reminder

when removing product parts. Always perform service work at an ESD-protected workstation or mat, or use an ESD strap. If an ESD workstation, mat, or strap is not available, ground yourself by touching the sheet-metal chassis before touching an ESD-sensitive part.

Protect the ESD-sensitive parts by placing them in ESD pouches when they are out of the product.

Required tools

#2 Phillips screwdriver with a magnetic tip and a 152-mm (6-inch) shaft length

●

Small flat-blade screwdriver

●

Needle-nose pliers

●

ESD mat (if one is available) or ESD strap

●

Penlight (optional)

●

CAUTION: Always use a Phillips screwdriver (callout 1). Do not use a Pozidriv screwdriver

(callout 2) or any motorized screwdriver. These can damage screws or screw threads.

Figure 1-1 Phillips and Pozidriv screwdriver comparison

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Electrostatic discharge

Service approach

Before performing service

Remove all paper from the product.

●

Turn off the power using the power button.

●

WARNING! The power button must be turned off before performing service. Failure to turn off

the power leaves the fuser engaged and prevents its removal.

Unplug the power cable and interface cable or cables.

●

Place the product on an ESD workstation or mat (if one is available), or use an ESD strap. If an

●

ESD workstation, mat, or strap is not available, ground yourself by touching the sheet-metal chassis before touching an ESD-sensitive part.

Remove the print cartridges and imaging drum. See

●

drum on page 9

Remove the input tray. See

●

After performing service

Plug in the power cable.

●

Reinstall the print cartridges.

●

Load paper in the product.

●

Post-service test

Perform the following test to verify that the repair or replacement was successful.

Product verification test

1. Verify that you have completed the necessary reassembly steps.

2. Make sure that the tray contains clean, unmarked paper.

3. Attach the power cord and interface cable or interface cables, and then turn on the product.

Print cartridges on page 7 and Imaging

Input tray on page 11.

4. Verify that the expected startup sounds occur.

5. Print a configuration page, and then verify that the expected printing sounds occur.

6. Send a print job from the host computer, and then verify that the output meets expectations.

7. Use the document feeder to make a copy.

8. Clean the outside of the product with a damp cloth.

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Parts removal order

Figure 1-2 Parts removal order (base)

Print cartridges

Imaging drum

Input tray

Secondary transfer roller

Separation pad

Pickup roller

Right cover assembly

Left cover assembly

Document feeder

Document feeder hinges

Separation pad

Left cover

Right cover

Document feeder

Left cover

Top door, rear cover, and delivery cover

Rear door assembly

Rear-lower cover Control Panel

Left-front cover

Front door

Inner cover

Formatter PCA (base model)

Formatter and wireless PCA (plus model)

Fuser power supply

ITB

Fuser delivery assembly

Engine controller assembly

Low-voltage power supply assembly

Right cover

Right cover Right cover

Right cover

Left cover

Right cover

Left cover

Left cover Left cover

Left cover

Document feeder

Rear door Document feeder

Document feeder

Document feeder hinges

Document feederhinges

Document feeder hinges

Top door, rear cover, and delivery cover

Top door, rear cover,

livery cover

and de

Top door, rear cover, and delivery cover

Control Pan el

Rear door assembly

Control Pan el

Rear door assembly

Left-front cover

Rear-lower cover

Left-front cover

Rear-lower cover

Formatter PCA

Inner cover

Control Pan el

Formatter PCA

Left-front cover

Inner cover

Formatter PCA

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Service approach

Figure 1-3 Parts removal order (document feeder)

Document feeder input tray

Document feeder cover

Document core

Post scan pinch rollers

Document feeder input tray

Document feeder cover

Document core

Document feeder base assembly

Document feeder input tray

Document feeder cover

6 Chapter 1 Removal and replacement ENWW

Removal and replacement procedures

Print cartridges

When a print cartridge approaches the estimated end of its useful life, you can continue printing with the current print cartridge until it no longer yields acceptable print quality.

Once an HP print cartridge has reached “very low’, the HP Premium Protection Warranty on that supply has ended. All print defects or print cartridge failures incurred when an HP supply is used in continue at very low mode will not be considered to be defects in materials or workmanship in the supply under the HP Print Cartridge Warranty Statement.

1. Some error messages or status messages cause

the product to rotate the print cartridge carousel to the affected cartridge automatically. If the print cartridge that needs to be replaced is not in the correct position, press the Cartridge cartridge carousel to the cartridge color that you want to replace.

NOTE: All doors must be closed when

pressing the Cartridge imaging drum must be installed for the Cartridge

NOTE: Wait until the Rotating message

and the rotation sounds stop before opening the print cartridge door.

button to work.

button to rotate the print

button. Also, the

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Removal and replacement procedures

2. Open the print cartridge door.

3. Grasp the old print cartridge by the center

handle and remove it.

Close the doors, and then press the Cartridge

button to rotate the print cartridge carousel to the next cartridge. Repeat to remove all cartridges.

NOTE: Make sure that you store the

removed print cartridges away from strong light. HP recommends that you cover the print cartridges while servicing the product.

8 Chapter 1 Removal and replacement ENWW

Imaging drum

NOTE: The imaging drum installed in this product is covered by the product warranty. Replacement

imaging drums have a one-year limited warranty from the date of installation. The imaging drum installation date displays on the supplies status page. The HP Premium Protection Warranty applies only to the print cartridges for the product.

1. Open the print cartridge door.

2. Open the front cover.

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Removal and replacement procedures

3. Lift the two levers that hold the imaging drum.

4. Remove the old imaging drum.

NOTE: Make sure that you store the

removed imaging drum away from strong light. HP recommends that you cover the imaging drum while servicing the product.

10 Chapter 1 Removal and replacement ENWW

Input tray

Pull the tray away from the printer to remove.

Figure 1-4 Remove the tray

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Removal and replacement procedures

Secondary transfer roller

CAUTION: Do not touch the black spongy part of the roller. Skin oils might cause print-quality

problems.

1. Open the rear door.

2. Release two clips (callout 1), and then remove the roller from the product.

Figure 1-5 Remove the secondary transfer roller

12 Chapter 1 Removal and replacement ENWW

+ 140 hidden pages