HP Color LaserJet Pro CP1020 Service Manual

LASERJET PRO CP1020

COLOR PRINTER SERIES

Service Manual

Copyright and License

Trademark Credits

© 2010 Copyright Hewlett-Packard
Development Company, L.P.

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: CE913-90943

Edition 1, 10/2010

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.

ENWW iii

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

Print-quality test .......................................................................................... 4

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

Removal and replacement procedures ........................................................................................ 6

Replace the print cartridges ........................................................................................ 6

Replace the imaging drum .......................................................................................... 9

Input tray ............................................................................................................... 13

Secondary transfer roller .......................................................................................... 14

Separation pad assembly ......................................................................................... 15

Remove the separation pad assembly ......................................................... 15

Pickup roller ........................................................................................................... 16

Remove the pickup roller assembly ............................................................. 17

Covers ................................................................................................................... 18

Right cover assembly ................................................................................ 18

Remove the right cover assembly ................................................. 18

Left cover assembly ................................................................................... 19

Remove the left cover assembly ................................................... 19

Top door assembly ................................................................................... 20

Remove the top door assembly .................................................... 20

Rear top cover assembly ........................................................................... 22

Remove the rear top cover assembly ............................................ 22

Rear door assembly .................................................................................. 23

Remove the rear door assembly .................................................. 23

Rear lower cover assembly ........................................................................ 24

Remove the rear lower cover assembly ......................................... 24

Control panel .......................................................................................... 25

ENWW v

Remove the control panel ........................................................... 25

Front door ............................................................................................... 27

Remove the front door ................................................................ 27

Main assemblies ..................................................................................................... 29

ITB assembly ............................................................................................ 29

Remove the ITB assembly ............................................................ 29

Fuser delivery assembly ............................................................................ 38

Remove the fuser delivery assembly ............................................. 39

Formatter PCA (base model) ...................................................................... 43

Remove the formatter PCA (base model) ....................................... 43

Formatter and wireless PCA (plus model) ..................................................... 44

Remove the formatter and wireless PCA (plus model) ..................... 44

Engine controller assembly ........................................................................ 46

Remove the engine controller assembly ........................................ 46

Low-voltage power supply assembly ........................................................... 49

Remove the low-voltage power supply assembly ............................ 49

2 Solve problems ............................................................................................................... 53

Solve problems checklist ......................................................................................................... 54

Step 1: Make sure that the product is set up correctly .................................................. 54

Step 2: Check the cabling or wireless connection (network models only) ........................ 54

Step 3: Check to see if any control-panel lights are lit .................................................. 54

Step 4: Check the paper .......................................................................................... 54

Step 5: Check the software ....................................................................................... 55

Step 6: Test print functionality ................................................................................... 55

Step 7: Check the supplies ....................................................................................... 55

Step 8: Try sending a print job from a computer ......................................................... 55

Troubleshooting process .......................................................................................................... 56

Determine the problem source ................................................................................... 56

Power subsystem ..................................................................................................... 57

Power-on checks ...................................................................................... 57

Tools for troubleshooting ......................................................................................................... 58

Component diagnostics ............................................................................................ 58

Engine diagnostics ................................................................................... 58

Engine test page ...................................................................................... 58

Diagrams ............................................................................................................... 59

Plug/jack locations ................................................................................... 59

Locations of connectors ............................................................................. 60

Locations of major components .................................................................. 61

General timing chart ................................................................................. 63

General circuit diagram ............................................................................ 64

Internal print-quality test pages .................................................................................. 65

Print quality troubleshooting page .............................................................. 65

vi ENWW

Interpret the Print Quality Page .................................................... 65

Clean the paper path ............................................................................... 66

Print configuration page ............................................................................ 66

Print-quality troubleshooting tools .............................................................................. 67

Repetitive image defects ruler .................................................................... 67

Calibrate the product ................................................................................ 67

Interpret control panel light patterns ........................................................................... 68

Status alert messages ............................................................................................... 71

Clear jams ............................................................................................................................ 77

Prevent paper jams .................................................................................................. 77

Jam locations .......................................................................................................... 78

Clear jams from the input tray ................................................................................... 78

Clear jams from the output bin .................................................................................. 80

Clear jams from the rear door ................................................................................... 81

The product does not feed automatically ................................................................................... 82

The product feeds multiple sheets ............................................................................................. 82

Solve image-quality problems .................................................................................................. 83

Image defects table ................................................................................................. 83

Clean the product .................................................................................................................. 89

Clean the separation pad or pickup roller .................................................................. 89

Clean the paper path .............................................................................................. 90

Clean the exterior ................................................................................................... 90

Solve performance problems ................................................................................................... 91

The product does not print ........................................................................................ 91

The product prints slowly .......................................................................................... 91

Solve connectivity problems ..................................................................................................... 92

Solve direct-connect problems ................................................................................... 92

Solve network problems ........................................................................................... 92

Poor physical connection ........................................................................... 92

The computer is using the incorrect IP address for the product ........................ 92

The computer is unable to communicate with the product .............................. 93

The product is using incorrect link and duplex settings for the network ............ 93

New software programs might be causing compatibility problems .................. 93

The computer or workstation might be set up incorrectly ................................ 93

The product is disabled, or other network settings are incorrect ...................... 93

Solve wireless network problems (wireless models only) ............................................... 94

Wireless connectivity checklist ................................................................... 94

The product does not print after the wireless configuration completes .............. 94

The product does not print, and the computer has a third-party firewall

installed .................................................................................................. 95

The wireless connection does not work after moving the wireless router or

product ................................................................................................... 95

Cannot connect more computers to the wireless product ................................ 95

The wireless product loses communication when connected to a VPN ............. 95

ENWW vii

The network does not appear in the wireless networks list ............................. 95

The wireless network is not functioning ........................................................ 95

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

Product resets ......................................................................................................... 97

Product updates ..................................................................................................................... 97

3 Parts and diagrams ........................................................................................................ 99

Order parts by authorized service providers ............................................................................ 100

Order replacement parts ........................................................................................ 100

Related documentation and software ....................................................................... 100

Supplies part numbers ........................................................................................... 100

Service parts ........................................................................................................ 100

Whole-unit replacement part numbers ...................................................................... 101

How to use the parts lists and diagrams .................................................................................. 102

Assembly locations ............................................................................................................... 103

Base product (no optional trays or accessories) ......................................................... 103

Covers, panels, and doors .................................................................................................... 104

Internal assembly ................................................................................................................. 106

Internal assembly .................................................................................................. 106

PCAs .................................................................................................................................. 108

Alphabetical parts list ........................................................................................................... 110

Numerical parts list .............................................................................................................. 112

Appendix A Service and support ..................................................................................... 115

Hewlett-Packard limited warranty statement ............................................................................. 116

HP's Premium Protection Warranty: LaserJet print cartridge limited warranty statement .................. 118

HP's LaserJet imaging drum limited warranty statement for replacement imaging drums ................ 119

Data stored on the print cartridge and imaging drum ............................................................... 120

End User License Agreement .................................................................................................. 121

OpenSSL ............................................................................................................................. 123

Customer self-repair warranty service ..................................................................................... 124

Customer support ................................................................................................................. 124

Repack the product .............................................................................................................. 125

Appendix B Specifications ................................................................................................ 127

Physical specifications .......................................................................................................... 128

Power consumption .............................................................................................................. 128

Acoustic specifications .......................................................................................................... 129

Environmental specifications .................................................................................................. 129

Appendix C Regulatory information ................................................................................. 131

FCC regulations ................................................................................................................... 132

Declaration of conformity (base models) ................................................................................. 133

viii ENWW

Declaration of conformity (wireless models) ............................................................................. 135

Certificate of Volatility .......................................................................................................... 137

Safety statements ................................................................................................................. 139

Laser safety .......................................................................................................... 139

Canadian DOC regulations .................................................................................... 139

VCCI statement (Japan) .......................................................................................... 139

Power cord instructions .......................................................................................... 139

Power cord statement (Japan) ................................................................................. 139

EMC statement (Korea) .......................................................................................... 140

Laser statement for Finland ..................................................................................... 140

GS statement (Germany) ........................................................................................ 140

Substances Table (China) ....................................................................................... 141

Restriction on Hazardous Substances statement (Turkey) ............................................. 141

Additional statements for wireless products .............................................................................. 142

FCC compliance statement—United States ................................................................ 142

Australia statement ................................................................................................ 142

Brazil ANATEL statement ........................................................................................ 142

Canadian statements ............................................................................................. 142

European Union regulatory notice ........................................................................... 142

Notice for use in France ......................................................................................... 143

Notice for use in Russia ......................................................................................... 143

Korean statement .................................................................................................. 143

Taiwan statement .................................................................................................. 143

Index ............................................................................................................................... 145

ENWW ix

List of tables

Table 2-1 Status light legend ................................................................................................................ 68

Table 2-2 Control-panel light patterns .................................................................................................... 68

Table 2-3 Wireless light patterns ........................................................................................................... 70

Table 3-1 Order parts, accessories, and supplies .................................................................................. 100

Table 3-2 Related documentation and software .................................................................................... 100

Table 3-3 Supplies part numbers ......................................................................................................... 100

Table 3-4 Whole-unit replacement part numbers ................................................................................... 101

Table 3-5 Base product ..................................................................................................................... 103

Table 3-6 Covers, panels, and doors ................................................................................................... 105

Table 3-7 Internal assembly) ............................................................................................................... 107

Table 3-8 PCAs ................................................................................................................................ 109

Table 3-9 Alphabetical parts list ......................................................................................................... 110

Table 3-10 Numerical parts list ........................................................................................................... 112

Table B-1 Physical specifications
Table B-2 HP LaserJet Pro CP1020 Color Printer Series (average in watts)
Table B-3 HP LaserJet Pro CP1020 Color Printer Series

Table B-4 Environmental specifications ................................................................................................ 129

1

........................................................................................................ 128

123

............................................ 128

1,2

...................................................................... 129

ENWW xi

List of figures

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

Figure 1-2 Parts removal order ............................................................................................................... 5

Figure 1-3 Remove the tray .................................................................................................................. 13

Figure 1-4 Remove the secondary transfer roller ...................................................................................... 14

Figure 1-5 Remove the separation pad assembly (1 of 1) ......................................................................... 15

Figure 1-6 Remove the pickup roller assembly (1 of 2) ............................................................................. 17

Figure 1-7 Remove the pickup roller assembly (2 of 2) ............................................................................. 17

Figure 1-8 Remove the right cover (1 of 2) ............................................................................................. 18

Figure 1-9 Remove the right cover (2 of 2) ............................................................................................. 18

Figure 1-10 Remove the left cover (1 of 2) ............................................................................................. 19

Figure 1-11 Remove the left cover, duplex product (2 of 2) ...................................................................... 19

Figure 1-12 Remove the top door assembly (1 of 3) ................................................................................ 20

Figure 1-13 Remove the top door assembly (2 of 3) ................................................................................ 20

Figure 1-14 Remove the top door assembly (3 of 3) ................................................................................ 21

Figure 1-15 Remove the top door (1 of 2) .............................................................................................. 22

Figure 1-16 Remove the top door (2 of 2) .............................................................................................. 22

Figure 1-17 Remove the rear door assembly (1 of 2) ............................................................................... 23

Figure 1-18 Remove the rear door assembly (2 of 2) ............................................................................... 23

Figure 1-19 Remove the lower cover assembly ....................................................................................... 24

Figure 1-20 Remove the control panel (1 of 2) ........................................................................................ 25

Figure 1-21 Remove the control panel (2 of 2) ........................................................................................ 26

Figure 1-22 Remove the front door (1 of 2) ............................................................................................ 27

Figure 1-23 Remove the front door (2 of 3) ............................................................................................ 28

Figure 1-24 Remove the ITB assembly (1 of 16) ...................................................................................... 29

Figure 1-25 Remove the ITB assembly (2 of 16) ...................................................................................... 30

Figure 1-26 Remove the ITB assembly (3 of 16) ...................................................................................... 30

Figure 1-27 Remove the ITB assembly (4 of 16) ...................................................................................... 31

Figure 1-28 Remove the ITB assembly (5 of 16) ...................................................................................... 31

Figure 1-29 Remove the ITB assembly (6 of 16) ...................................................................................... 32

Figure 1-30 Remove the ITB assembly (7 of 16) ...................................................................................... 32

Figure 1-31 Remove the ITB assembly (8 of 16) ...................................................................................... 33

Figure 1-32
Figure 1-

Figure 1-34 Remove the ITB assembly (11 of 16) .................................................................................... 34

 R

emove the ITB assembly (9 of 16) ...................................................................................... 33

33 Remove the ITB assembly (10 of 16) .................................................................................... 34

ENWW xiii

Figure 1-35 Remove the ITB assembly (12 of 16) .................................................................................... 35

Figure 1-36 Remove the ITB assembly (13 of 16) .................................................................................... 35

Figure 1-37 Remove the ITB assembly (14 of 16) .................................................................................... 36

Figure 1-38 Remove the ITB assembly (15 of 16) .................................................................................... 36

Figure 1-39 Remove the ITB assembly (16 of 16) .................................................................................... 37

Figure 1-40 Remove the fuser delivery assembly (1 of 6) .......................................................................... 39

Figure 1-41 Remove the fuser delivery assembly (2 of 6) .......................................................................... 39

Figure 1-42 Remove the fuser delivery assembly (3 of 6) .......................................................................... 40

Figure 1-43 Remove the fuser delivery assembly (4 of 6) .......................................................................... 40

Figure 1-44 Remove the fuser delivery assembly (5 of 6) .......................................................................... 41

Figure 1-45 Remove the fuser delivery assembly (6 of 6) .......................................................................... 41

Figure 1-46 Reassemble the fuser delivery assembly (1 of 2) .................................................................... 42

Figure 1-47 Reassemble the fuser delivery assembly (2 of 2) .................................................................... 42

Figure 1-48 Remove the formatter PCA (base model; 1 of 2) .................................................................... 43

Figure 1-49 Remove the formatter PCA (base model; 2 of 2) .................................................................... 43

Figure 1-50 Remove the formatter and wireless PCA (plus model; 1 of 2) ................................................... 44

Figure 1-51 Remove the formatter and wireless PCA (plus mode; 2 of 2) ................................................... 45

Figure 1-52 Remove the engine controller assembly (1 of 5) ..................................................................... 46

Figure 1-53 Remove the engine controller assembly (2 of 5) ..................................................................... 47

Figure 1-54 Remove the engine controller assembly (3 of 5) ..................................................................... 47

Figure 1-55 Remove the engine controller assembly (4 of 5) ..................................................................... 48

Figure 1-56 Remove the engine controller assembly (5 of 5) ..................................................................... 48

Figure 1-57 Remove the low-voltage power supply assembly (1 of 6) ........................................................ 49

Figure 1-58 Remove the low-voltage power supply assembly (2 of 6) ........................................................ 50

Figure 1-59 Remove the low-voltage power supply assembly (3 of 6) ........................................................ 50

Figure 1-60 Remove the low-voltage power supply assembly (4 of 6) ........................................................ 51

Figure 1-61 Remove the low voltage power supply assembly (5 of 6) ........................................................ 51

Figure 1-62 Remove the low-voltage power supply assembly (6 of 6) ........................................................ 52

Figure 2-1 Engine test page ................................................................................................................. 58

Figure 2-2 
Figure 2-

Figure 2-4 External view ...................................................................................................................... 61

Figure 2-5 Cross section view ............................................................................................................... 62

Figure 2-6 General timing diagram ....................................................................................................... 63

Figure 2-7 Circuit diagram ................................................................................................................... 64

Figure 3-1 Base product (no optional trays or accessories) ..................................................................... 103

Figure 3-2 Covers, panels, and doors ................................................................................................. 104

Figure 3-3 Internal assembly ............................................................................................................... 106

Figure 3-4 PCAs ............................................................................................................................... 108

Plug/jack locations ..............................................................................................................

3 Locations of connectors ........................................................................................................ 60

59

xiv ENWW

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.

2 Chapter 1 Removal and replacement ENWW

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 or ESD strap (if one is available)

●

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

ENWW

Electrostatic discharge

3

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 it removal.

Unplug the power cable and interface cable or cables.

●

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

●

After performing service

Plug in the power cable.

●

Reinstall the print cartridge.

●

Load paper in the product.

●

Post-service test

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

Print-quality 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.

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

4 Chapter 1 Removal and replacement ENWW

Parts removal order

Figure 1-2 Parts removal order

Print cartridges

Imaging drum

Input tray

Separation pad

Pickup roller

Right cover assembly

Left cover assembly

Top door assembly

Rear top cover assembly

Rear door assembly

Rear lower cover assembly

Control Panel

Front door

ITB

Fuser delivery assembly

Formatter PCA (base model)

Formatter and wireless PCA (plus model)

Engine controller assembly

Low-voltage power supply assembly

Separation pad

Right cover Left cover

Right cover Left cover

Right cover

Right cover Left cover

Right cover

Left cover

Imaging drum

Right cover

Left cover

Right cover Left cover

Left cover

Input tray Right cover Left cover

Control Panel

Rear top cover

Left cover

Rear door

Rear lower cover

Rear top cover

Top door

Rear lower cover

ENWW

Service approach

5

Removal and replacement procedures

Replace the print cartridges

When a print cartridge approaches the 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’, HP’s 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.

NOTE: Once an HP print cartridge has reached “very low’, the corresponding cartridge light on the

control panel turns on.

1. Press the Cartridge button of the print

cartridge that requires replacement to rotate
the print cartridge carousel for removal.

NOTE: All doors must be closed when

pressing the Cartridge

NOTE: Wait until the Cartridge

not flashing and the rotation sounds stops
before opening the print cartridge door.

2. Open the print cartridge door.

button.

light is

6 Chapter 1 Removal and replacement ENWW

3. Grasp the old print cartridge by the center

handle and remove.

4. Remove the new print cartridge from the

packaging. Place the used print cartridge in
the bag and box for recycling.

CAUTION: To prevent damage to the print

cartridge, hold the print cartridge at each end.
Do not touch the roller on the print cartridge.

5. Remove the protective shielding from the new

print cartridge.

6. Grasp both sides of the print cartridge and

gently rock the print cartridge to distribute the
toner evenly inside the print cartridge.

7. Remove the tape from the print cartridge. Place

the tape in the print-cartridge box to return for
recycling.

ENWW

Removal and replacement procedures

7

8. Grasp the print cartridge by the center handle

and insert into the product.

NOTE: Compare the color label on the print

cartridge to the color label in the carousel slot
to make sure the print cartridge color matches
the carousel position.

CAUTION: If toner gets on your clothing,

wipe it off with a dry cloth and wash the
clothing in cold water. Hot water sets toner
into the fabric.

9. Close the print cartridge door.

NOTE: After closing the print cartridge door,

the Ready

light and Attention light will
flash. Allow up to three minutes for the product
to calibrate.

NOTE: If replacing another print cartridge,

you must close the print cartridge door before
pressing the Cartridge

button of the next

print cartridge.

10. When printing, if you receive the status alert

message Wrong Cartridge in <Color>
Slot, remove the print cartridge from the

specified slot and compare the color label on
the print cartridge to the color label in the slot
to determine the correct print cartridge for the
slot.

8 Chapter 1 Removal and replacement ENWW

Replace the 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 both the configuration page and on the supplies status page when the
imaging drum reaches approximately 30% of its estimated remaining life. HP's Premium Protection
Warranty applies only to the print cartridges for the product.

1. Open the print cartridge door.

2. Open the front cover.

ENWW

Removal and replacement procedures

9

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

4. Remove the old imaging drum.

5. Remove the new imaging drum from the

packaging. Place the used imaging drum in
the bag and box for recycling.

10 Chapter 1 Removal and replacement ENWW

6. Remove the protective shielding from the new

imaging drum.

CAUTION: To prevent damage, do not

expose the imaging drum to light for an
extended period of time. Cover the imaging
drum with a piece of paper if it can not be
installed immediately.

CAUTION: Do not touch the green drum.

Fingerprints on the imaging drum can cause
print-quality problems.

7. Insert the new imaging drum in the product.

8. Lower the two levers that hold the imaging

drum.

ENWW

Removal and replacement procedures

11

9. Close the front cover.

10. Close the print cartridge door.

NOTE: After closing the print cartridge door,

the Ready
flash. Allow up to a minute for the product to
calibrate.

light and Attention light will

12 Chapter 1 Removal and replacement ENWW

Input tray

Pull the tray away from the printer to remove.

Figure 1-3 Remove the tray

ENWW

Removal and replacement procedures

13

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 form the product.

Figure 1-4 Remove the secondary transfer roller

1

14 Chapter 1 Removal and replacement ENWW

Separation pad assembly

Remove the separation pad assembly

1. Turn the product front side up.

2. Remove two screws (callout 1) and the separation pad assembly (callout 2).

Figure 1-5 Remove the separation pad assembly (1 of 1)

2

1

ENWW

Removal and replacement procedures

15

Pickup roller

Rotate the pickup roller to the service position

To gain access to the roller locking tabs you must rotate the roller to the correct position for removal.

1. When the product is in the Ready state, press and hold the Auto-On/Auto-Off (power) button for

about seven seconds or until the Ready

TIP: Optionally, unplug the power cord, and then plug the cord back in.

2. Make sure that one sheet of paper is loaded in the input tray.

NOTE: If more than one sheet of paper is loaded in the tray, this procedure will not be

successful.

3. Press and release the Auto-On/Auto-Off (power) button and within two seconds press and hold

down the cyan cartridge button. Hold the cyan button down for about five seconds, or until the
initialization process begins.

NOTE: Immediately after the Auto-On/Auto-Off (power) button is pressed, all of the control

panel lights illuminate briefly (for about two seconds). You must press the cyan cartridge button
while the lights are illuminated.

4. When the product finishes initializing, the roller rotates into the removal position. Turn the product

off. Unplug the product before removing any components.

light turns off.

NOTE: When the roller is in the removal position, the sheet of paper will have been pulled into

the paper path by about 12 mm (.5 in). This is visual confirmation that the roller has rotated to the
removal position.

Before proceeding, remove the following components:

Right cover assembly. See

●

Left cover assembly. See

●

Separation pad assembly. See

●

Right cover assembly on page 18.

Left cover assembly on page 19.

Separation pad assembly on page 15.

16 Chapter 1 Removal and replacement ENWW

Remove the pickup roller assembly

1. Remove four screws (callout 1) and the lower stay part (callout 2).

Figure 1-6 Remove the pickup roller assembly (1 of 2)

2

1

2. Release two tabs (callout 1) and remove the pickup roller (callout 2).

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

1

2

ENWW

Removal and replacement procedures

17

Covers

Right cover assembly

Remove the right cover assembly

1. Open the top and rear door assemblies.

2. Remove one screw (callout 1), and then starting at the rear vertical edge, release five tabs (callout

2) and remove the right cover assembly (callout 3).

NOTE: Before proceeding, take note of the locations of the tabs (callout 1) on the back side of

the cover. See

Figure 1-8 Remove the right cover (1 of 2)

Figure 1-9 Remove the right cover (2 of 2) on page 18.

3

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

2

2

1

18 Chapter 1 Removal and replacement ENWW

Left cover assembly

Remove the left cover assembly

1. Open the top door.

2. Remove one screw (callout 1), and then starting at the rear vertical edge, release two tabs (callout

2) and remove the left cover assembly (callout 3).

NOTE: Before proceeding, take note of the locations of the tabs (callout 2) on the back side of

the cover. See

Figure 1-10 Remove the left cover (1 of 2)

Figure 1-11 Remove the left cover, duplex product (2 of 2) on page 19.

3

2

1

Figure 1-11 Remove the left cover, duplex product (2 of 2)

2

ENWW

Removal and replacement procedures

19

Top door assembly

Before proceeding, remove the following components:

Right cover assembly. See

●

Left cover assembly. See

●

Remove the top door assembly

1. Remove one screw (callout 1).

Figure 1-12 Remove the top door assembly (1 of 3)

Right cover assembly on page 18.

Left cover assembly on page 19.

1

2. Use a small, flat blade screwdriver to release the five tabs between the top door assembly and the

rear top cover.

Figure 1-13 Remove the top door assembly (2 of 3)

20 Chapter 1 Removal and replacement ENWW

3. Lift the top door and rear edge, then slide the top door assembly forward to release the two tabs

from the drive shaft at the top of the product.

Figure 1-14 Remove the top door assembly (3 of 3)

ENWW

Removal and replacement procedures

21

Rear top cover assembly

Before proceeding, remove the following components:

Right cover assembly. See

●

Left cover assembly. See

●

Top door assembly. See

●

Remove the rear top cover assembly

Release one tab (callout 1) and remove the rear top cover (callout 2).

▲

Figure 1-15 Remove the top door (1 of 2)

Left cover assembly on page 19.

Top door assembly on page 20.

Right cover assembly on page 18.

2

1

Figure 1-16 Remove the top door (2 of 2)

1

22 Chapter 1 Removal and replacement ENWW

Rear door assembly

Before proceeding, remove the following components:

Right cover assembly. See

●

Remove the rear door assembly

1. Remove one screw (callout 1) and the bushing (callout 2).

Figure 1-17 Remove the rear door assembly (1 of 2)

Right cover assembly on page 18.

1

2

2. Pull out the shaft (callout 1) and remove the rear door assembly (callout 2).

Figure 1-18 Remove the rear door assembly (2 of 2)

1

2

ENWW

Removal and replacement procedures

23

Rear lower cover assembly

Before proceeding, remove the following components:

Right cover assembly. See

●

Left cover assembly. See

●

Rear door assembly. See

●

Remove the rear lower cover assembly

Remove two screws (callout 1) and the rear lower cover assembly (callout 2).

Figure 1-19 Remove the lower cover assembly

Right cover assembly on page 18.

Left cover assembly on page 19.

Rear door assembly on page 23.

1

2

24 Chapter 1 Removal and replacement ENWW

Control panel

CAUTION: ESD sensitive.

Before proceeding, remove the following components:

Right cover assembly. See

●

Remove the control panel

1. Open the top door assembly.

2. Remove two screws (callout 1) and disconnect one connector (callout 2).

Figure 1-20 Remove the control panel (1 of 2)

Right cover assembly on page 18.

1

4

2

ENWW

Removal and replacement procedures

25

3. Release one tab (callout 3) and remove the control panel (callout 4).

Figure 1-21 Remove the control panel (2 of 2)

3

26 Chapter 1 Removal and replacement ENWW

Front door

Before proceeding, remove the following components:

Right cover assembly. See

●

Left cover assembly. See

●

Control panel. See

●

Remove the front door

1. Open the front door.

2. Remove four screws (callout 1) and the scanner cover (callout 2).

Figure 1-22 Remove the front door (1 of 2)

Right cover assembly on page 18.

Left cover assembly on page 19.

Control panel on page 25.

1

2

ENWW

Removal and replacement procedures

27

3. Release one tab (callout 1) and slide the front door (callout 2) in the direction that the arrow

indicates to remove it.

Figure 1-23 Remove the front door (2 of 3)

2

1

28 Chapter 1 Removal and replacement ENWW

Main assemblies

ITB assembly

CAUTION: ESD sensitive.

Before proceeding, remove the following components:

Imaging drum. See

●

Rear top cover assembly. See

●

Rear lower cover assembly. See

●

Remove the ITB assembly

1. For wireless products, follow these steps to remove the wireless PCA.

a. Release one tab (callout 1) and disconnect one connector (callout 2) on the back of the

wireless PCA.

Figure 1-24 Remove the ITB assembly (1 of 16)

Replace the imaging drum on page 9.

Rear top cover assembly on page 22.

Rear lower cover assembly on page 24.

1

2

ENWW

b. Remove three screws (callout 1).

NOTE: Base products have only two screws and the appearance of the formatter may be

slightly different from what appears in

on page 29.

Figure 1-24 Remove the ITB assembly (1 of 16)

Removal and replacement procedures

29

2. Disconnect three connectors (callout 2) and remove the formatter (callout 3).

Figure 1-25 Remove the ITB assembly (2 of 16)

3

2

1

3. Release one tab (callout 1) and remove the cable cover (callout 2).

Figure 1-26 Remove the ITB assembly (3 of 16)

2

1

4. Disconnect one connector (callout 1).

30 Chapter 1 Removal and replacement ENWW

5. Release cables (callout 4) from the cable clips (callout 2) and the cable guide (callout 3).

Figure 1-27 Remove the ITB assembly (4 of 16)

4

1

3

2

6. Release one tab (callout 1) and remove the left side arm (callout 2) of the rear door.

Figure 1-28 Remove the ITB assembly (5 of 16)

ENWW

2

1

Removal and replacement procedures

31

7. Release the hook (callout 1) of the ITB fuser spring and turn the spring (callout 2) frontward.

Figure 1-29 Remove the ITB assembly (6 of 16)

3

2

Figure 1-30 Remove the ITB assembly (7 of 16)

2

32 Chapter 1 Removal and replacement ENWW

8. Turn the ITB fuser part (callout 1) frontward (callout 2).

Figure 1-31 Remove the ITB assembly (8 of 16)

1

Figure 1-32 Remove the ITB assembly (9 of 16)

2

ENWW

Removal and replacement procedures

33

9. Release two tabs (callout 1) and remove the spring cover (callout 2).

Figure 1-33 Remove the ITB assembly (10 of 16)

1

2

10. Release one tab (callout 1) and remove the right side arm (callout 2) of the rear door.

Figure 1-34 Remove the ITB assembly (11 of 16)

1

2

34 Chapter 1 Removal and replacement ENWW

11. Pull out the cables (callout 1), release the hook (callout 2) of the ITB fuser spring, and then turn the

spring (callout 3) frontward.

Figure 1-35 Remove the ITB assembly (12 of 16)

1

2

3

Figure 1-36 Remove the ITB assembly (13 of 16)

ENWW

2

Removal and replacement procedures

35

12. Turn the ITB fuser part (callout 1) frontward.

Figure 1-37 Remove the ITB assembly (14 of 16)

Figure 1-38 Remove the ITB assembly (15 of 16)

1

1

36 Chapter 1 Removal and replacement ENWW

13. Pull out the ITB assembly (callout 1).

CAUTION: Avoid touching the black plastic transfer belt. Skin oils on the belt might cause print-

quality problems.

Figure 1-39 Remove the ITB assembly (16 of 16)

1

ENWW

Removal and replacement procedures

37

Fuser delivery assembly

NOTE: For this product, the fuser and the paper delivery components are one assembly.

Position the fuser pressure roller for removal

You must rotate the pressure roller to the correct position before removing the fuser delivery assembly.

1. When the product is in the Ready state, press and hold the Auto-On/Auto-Off (power) button for

about seven seconds or until you hear subtle movement within the product and the Ready
turns off.

2. Release the Auto-On/Auto-Off (power) button. The product power will be off and the fuser

pressure roller is in the removal position. Unplug the product before removing any components.

Before proceeding, remove the following components:

light

●

Left cover assembly. See

●

Top door assembly. See

●

Rear top cover assembly. See

●

Formatter (base model) or formatter and wireless PCA (plus model). See

●

model) on page 43 or Formatter and wireless PCA (plus model) on page 44.

Left cover assembly on page 19.

Top door assembly on page 20.

Rear top cover assembly on page 22.

Right cover assembly. See

Right cover assembly on page 18 .

Formatter PCA (base

38 Chapter 1 Removal and replacement ENWW

Remove the fuser delivery assembly

CAUTION: ESD sensitive.

1. Release one tab (callout 1) and disconnect one connector (callout 2) on the back of the wireless

PCA.

Figure 1-40 Remove the fuser delivery assembly (1 of 6)

2

1

2. Remove three screws (callout 1).

3. Disconnect three connectors (callout 2) and the formatter (callout 3).

Figure 1-41 Remove the fuser delivery assembly (2 of 6)

3

2

1

ENWW

Removal and replacement procedures

39

4. Release one tab (callout 1) and remove the cable cover (callout 2).

Figure 1-42 Remove the fuser delivery assembly (3 of 6)

2

1

5. Disconnect four connectors (callout 1).

6. Release cables (callout 4) from the cable clips (callout 2) and the cable guide (callout 3).

Figure 1-43 Remove the fuser delivery assembly (4 of 6)

2

3

4

1

40 Chapter 1 Removal and replacement ENWW

7. Remove two screws (callout 1) and the carousel cover (callout 2).

Figure 1-44 Remove the fuser delivery assembly (5 of 6)

2

1

8. Remove six screws (callout 1) and the fuser delivery assembly (callout 2).

Figure 1-45 Remove the fuser delivery assembly (6 of 6)

1

2

ENWW

Removal and replacement procedures

41

Reassemble the fuser delivery assembly

When reassembling the fuser delivery assembly, be sure the drive cam (callout 1) for fuser

▲

pressure release is positioned as shown in the figures below.

Figure 1-46 Reassemble the fuser delivery assembly (1 of 2)

1

Figure 1-47 Reassemble the fuser delivery assembly (2 of 2)

1

42 Chapter 1 Removal and replacement ENWW

Formatter PCA (base model)

CAUTION: ESD sensitive.

Before proceeding, remove the following components:

Left cover assembly. See

●

Remove the formatter PCA (base model)

1. Disconnect three connectors (callout 1).

Figure 1-48 Remove the formatter PCA (base model; 1 of 2)

Left cover assembly on page 19.

1

ENWW

2. Remove three screws (callout 1), and then remove the formatter PCA.

Figure 1-49 Remove the formatter PCA (base model; 2 of 2)

1

Removal and replacement procedures

43

Formatter and wireless PCA (plus model)

CAUTION: ESD sensitive.

Before proceeding, remove the following components:

Right cover assembly. See

●

Left cover assembly. See

●

Top door assembly. See

●

Remove the formatter and wireless PCA (plus model)

1. Release two tabs (callout 1), and then remove the wireless PCA (callout 2).

Figure 1-50 Remove the formatter and wireless PCA (plus model; 1 of 2)

Right cover assembly on page 18.

Left cover assembly on page 19.

Top door assembly on page 20.

2

1

44 Chapter 1 Removal and replacement ENWW

2. Disconnect three connectors (callout 1), remove three screws (callout 2), and then remove the

formatter PCA.

Figure 1-51 Remove the formatter and wireless PCA (plus mode; 2 of 2)

2

1

ENWW

Removal and replacement procedures

45

Engine controller assembly

CAUTION: ESD sensitive.

Before proceeding, remove the following components:

Left cover assembly. See

●

Remove the engine controller assembly

1. Release one tab (callout 1) and disconnect one connector (callout 2) on the back of the wireless

PCA.

Figure 1-52 Remove the engine controller assembly (1 of 5)

Left cover assembly on page 19.

1

2

2. Remove three screws (callout 1).

46 Chapter 1 Removal and replacement ENWW

3. Disconnect three connectors (callout 2) and the formatter (callout 3).

Figure 1-53 Remove the engine controller assembly (2 of 5)

3

2

1

4. Release one tab (callout 1) and remove the cable cover (callout 2).

Figure 1-54 Remove the engine controller assembly (3 of 5)

ENWW

2

1

Removal and replacement procedures

47

5. Disconnect all of eleven connectors (callout 1) on the engine controller assembly.

Figure 1-55 Remove the engine controller assembly (4 of 5)

1

6. Remove six screws (callout 1).

7. Release two tabs (callout 2) and the engine controller assembly (callout 3).

Figure 1-56 Remove the engine controller assembly (5 of 5)

1

2

3

48 Chapter 1 Removal and replacement ENWW

Low-voltage power supply assembly

CAUTION: ESD sensitive.

Before proceeding, remove the following components:

Input tray. See

●

Right cover assembly. See

●

Left cover assembly. See

●

Rear lower cover assembly. See

●

Remove the low-voltage power supply assembly

1. Remove two screws (callout 1) and disconnect one connector (callout 2).

Figure 1-57 Remove the low-voltage power supply assembly (1 of 6)

Input tray on page 13.

Right cover assembly on page 18.

Left cover assembly on page 19.

Rear lower cover assembly on page 24.

1

ENWW

2

2. Release the cables (callout 1).

Removal and replacement procedures

49

3. Release two tabs (callout inlet part (callout 3).

Figure 1-58 Remove the low-voltage power supply assembly (2 of 6)

2

3

4. Disconnect one connector (callout 1).

5. Release the cables (callout 3) from the cable guide (callout 2).

Figure 1-59 Remove the low-voltage power supply assembly (3 of 6)

1

1

3

2

6. Turn the product rear side up.

50 Chapter 1 Removal and replacement ENWW

7. Remove four screws (callout 1).

Figure 1-60 Remove the low-voltage power supply assembly (4 of 6)

1

8. Remove three screws (callout 1).

9. Disconnect one connector (callout 2) and pull out the low-voltage power supply assembly

(callout 3).

Figure 1-61 Remove the low voltage power supply assembly (5 of 6)

2 3

1

ENWW

Removal and replacement procedures

51

10. Disconnect three connectors (callout 1) and remove the low-voltage power supply assembly

(callout 2).

Figure 1-62 Remove the low-voltage power supply assembly (6 of 6)

1

2

52 Chapter 1 Removal and replacement ENWW

2 Solve problems

Solve problems checklist

●

Troubleshooting process

●

Tools for troubleshooting

●

Clear jams

●

The product does not feed automatically

●

The product feeds multiple sheets

●

Solve image-quality problems

●

Clean the product

●

Solve performance problems

●

Solve connectivity problems

●

Service mode functions

●

Product updates

●

ENWW 53

Solve problems checklist

Follow these steps when trying to solve a problem with the product.

Step 1: Make sure that the product is set up correctly

●

Step 2: Check the cabling or wireless connection (network models only)

●

Step 3: Check to see if any control-panel lights are lit

●

Step 4: Check the paper

●

Step 5: Check the software

●

Step 6: Test print functionality

●

Step 7: Check the supplies

●

Step 8: Try sending a print job from a computer

●

Step 1: Make sure that the product is set up correctly

Make sure that the product is set up correctly.

1. Press the power button to turn on the product or to deactivate the Auto-On\Auto-Off mode.

2. Check the power-cable connections.

3. Make sure that the line voltage is correct for the product power configuration. (See the label that is

on the back of the product for voltage requirements.) If you are using a power strip and its voltage
is not within specifications, plug the product directly into the wall. If it is already plugged into the
wall, try a different outlet.

4. Make sure that the imaging-drum-cartridges are installed correctly.

5. Print an engine test page to verify the engine is functioning.

Step 2: Check the cabling or wireless connection (network models
only)

1. Check the cable connection between the product and the computer. Make sure that the connection

is secure.

2. Make sure that the cable itself is not faulty by using a different cable, if possible.

Step 3: Check to see if any control-panel lights are lit

The control panel should indicate ready status. If an error message appears, resolve the error.

Step 4: Check the paper

1. Make sure that the paper that you are using meets specifications.

2. Make sure that the paper is loaded correctly in the input tray.

54 Chapter 2 Solve problems ENWW

Step 5: Check the software

1. Make sure that the product software is installed correctly.

2. Verify that you have installed the printer driver for this product. Check the program to make sure

that you are using the printer driver for this product.

Step 6: Test print functionality

1. Print a configuration page. Select Print configuration page on the Services tab in the Printer

Preferences.

2. If the page does not print, verify that the input tray contains paper.

3. If the page jams in the product, clear the jam.

Step 7: Check the supplies

Print a supplies status page and check remaining life of the print cartridges and imaging drum.

Step 8: Try sending a print job from a computer

1. Try printing the job from another computer that has the product software installed.

2. Check the USB cable connection. Direct the product to the correct port, or reinstall the software,

selecting the connection type that you are using.

3. If the print quality is unacceptable, complete the following steps:

Verify that the print settings are correct for the media that you are using.

●

ENWW

Solve problems checklist

55

Troubleshooting process

Determine the problem source

The following table includes basic questions to ask the customer to quickly help define the problem or
problems.

General topic Questions

Environment

Paper

Input tray

Is the product installed on a solid, level surface (± 1°)?

●

Is the power-supply voltage within ± 10 volts of the specified power source?

●

Is the power-supply plug inserted in the product and the outlet?

●

Is the operating environment within the specified parameters?

●

Is the product exposed to ammonia gas, such as that produced by diazo

●

copiers or office cleaning materials?

NOTE: Diazo copiers produce ammonia gas as part of the coping

processes. Ammonia gas (from cleaning supplies or a diazo copier) can have
an adverse affect on some product components (for example, the imaging
drum).

Is the product exposed to direct sunlight?

●

Does the customer use only supported paper?

●

Is the paper in good condition (no curls, folds, or distortion)?

●

Is the paper stored correctly and within environmental limits?

●

Is the amount of paper in the tray within specifications?

●

Is the paper correctly placed in the tray?

●

Are the paper guides aligned with the stack?

●

Cartridge

Transfer roller and fuser

Covers

Condensation

Miscellaneous

Are the developing cartridges and the imaging-drum installed correctly and

●

firmly seated?

Are the transfer roller and fuser installed correctly?

●

Are the top, front and rear doors firmly closed?

●

Does condensation occur following a temperature change (particularly in

●

winter following cold storage)? If so, wipe affected parts dry or leave the
product on for 90 to 120 minutes.

Was a cartridge opened soon after being moved from a cold to a warm

●

room? If so, allow the cartridge to sit at room temperature for 1 to 2 hours.

Check for and remove any non-HP components (for example, a print cartridge)

●

from the product.

Remove the product from the network and make sure that the failure is with the

●

product before beginning troubleshooting.

56 Chapter 2 Solve problems ENWW

Power subsystem

Power-on checks

Turn on the power. If the control-panel LEDs do not illuminate, perform the power-on checks to find the
cause of the problem.

1. Verify that the product is plugged into an active electrical outlet that delivers the correct voltage.

2. Verify that the power button is in the on position.

3. Make sure that the product makes the expected start up sounds.

NOTE: The overcurrent/overvoltage protection circuit in the low-voltage power supply unit might

be functioning. Turn the product off, unplug the power cord, and turn the product on. If the
product does not function, the fuse melts, or the power supply is malfunctioning, replace the
engine controller unit. See

Engine controller assembly on page 46.

ENWW

Troubleshooting process

57

Tools for troubleshooting

Component diagnostics

Engine diagnostics

Printing an engine test page helps determine if the product engine is functioning. Use the following
procedure to print a test page to make sure that the product engine is functioning

Engine test page

NOTE: The product does not have a test-print switch.

1. When the product is in the Ready state, press and hold the Auto-On/Auto-Off (power) button for

about seven seconds or until the Ready

TIP: Optionally, unplug the power cord, and then plug the cord back in.

2. Make sure that at least one sheet of paper is loaded in the input tray.

3. Open the top door (print-cartridge door).

4. Release the rear door and allow it to open to its first stop position; open about 19 mm (.75 in).

light turns off.

5. Press and hold the Auto-On/Auto-Off (power) button.

NOTE: The control-panel lights cycle on and off sequentially twice, starting with the black-

cartridge light (top) and ending with the Ready

6. When the black-cartridge light turns on for the second time—the beginning of the second cycle—

close the rear door, and then within five seconds close the top door (print-cartridge door).

7. When the product finishes initializing, an engine test page prints.

Figure 2-1 Engine test page

light.

58 Chapter 2 Solve problems ENWW

Diagrams

Plug/jack locations

Figure 2-2 Plug/jack locations

1

1 Kensington lock

2 Rear jam-access door

2

3

4

5

3 HP internal network port (network models only)

4 USB port

5 Power receptacle

ENWW

Tools for troubleshooting

59

Locations of connectors

Figure 2-3 Locations of connectors

J103

Item Description Item Description Item Description

J128

J130

J106

J107

J119

J102

J108

J101

J109

J152

J104

J110

J112

J140

J101 Not used J107 Media width

sensor (SR1)

Delivery sensor
(SR2)

J102 Not used J108 Low-voltage power

supply

TOP sensor (SR6)

J103 Formatter J109 Memory tag

Scanner motor
(M5)

Power switch PCA

Carousel home
sensor (SR7)

J104 Scanner assembly

(laser drive PCA)

J110 Carousel motor

(M1)

Fuser motor (M2)

J106 Loop sensor (SR3) J112 Pickup motor (M3)

T2 roller and ITB
cleaner solenoid
(SL1)

J119 Fuser pressure

release sensor
(SR4)

J128 Rear door open

detection switch
(SW1)

J130 ITB

J140 Low-voltage power

supply

J152 Not used

60 Chapter 2 Solve problems ENWW

Locations of major components

Figure 2-4 External view

1

9

8

7

6

5

2

3

4

ENWW

Item Description Item Description

1 Top door assembly 6 Rear door assembly

2 Control panel 7 Rear top cover

3 Right cover 8 Input tray

4 Left cover 9 Front door

5 rear bottom cover

Tools for troubleshooting

61

Figure 2-5 Cross section view

Item Description Item Description

1 Pressure roller 10 T1 pad

2 Delivery roller 11 ITB

3 Fuser film assembly 12 Pickup roller

4 Density ITB_TOP sensor 13 Separation pad

5 Developing-cartridge 14 Feed roller

6 Imaging drum 15 T2 roller

7 Imaging-drum 16 ITB drive roller

8 Laser scanner assembly 17 ITB cleaning brush

9 Input tray 18 ITB cleaning roller

62 Chapter 2 Solve problems ENWW

General timing chart

Figure 2-6 General timing diagram

PRINTINTR LSTR

ENWW

Print command

STBY STBY

Operation

Timing chart two consecutive prints on LTR paper (Full-color 1/1 speed mode)

1 Cassette pickup solenoid

TOP sensor3

2 Pickup motor

Fuser motor

4 Delivery sensor

5

Main motor7

6 Scanner motor

8 TOP signal

9 ITB_TOP signal

12 Developing bias

11 Carousel motor

10 Primary charging bias

T1 bias

T2 roller ITB cleaner solenoid

13

14

15 T2 bias

Tools for troubleshooting

63

General circuit diagram

Figure 2-7 Circuit diagram

D

Laser Driver PCA

/BDI

+3.3T

10

11

ITB Ass’y

J801

11

412356789

SGND

LDPWM

SGND

J104

1

DNSP

DNSGAIN1

ITBTOPPWM

98 2345617

SR3

J601

123

LOOPSNS

SGND

321

J106

LDCNT0

+3.3T

11

DNSGAIN0

LDCNT1

SGND

412356789

J130

6543289

DNSPWM

ITBTOPSNS

J611

TH801

12

21

J7L

J7D

J7DH

Scanner Ass’y

10

11

SOLD3

SOLD4

Memory TAG

12

J8L

21

J8D

SGND

VDO

/VDO

J8DH

VIN

CVSS

18 17 16 15 14 13 12 11 10 9 8 234561719

J128

7

+24V

DNSS

12

12

Sensor

Density/ITBTOP

SGND

DOORSNS_R

SOLD10

SOLD9

SGND

SW1

SR2SR1

J8002

J8003

J8004

J8001

POUTSNS(Y)

MAINTH

SGND

SGND(BL)

+3.3T(R)

PWSNS(GY)

123456

J107

1

2

C

B

A

M4

M

J704

/SCNDEC

SR4

J9001

VIN(V)

J119

4321

/SCNACC

Memory TAG

J9002

SGND(Y)

J118

+24V

SOLD7

21

J9003

+3.3T(BL)

12345678

+24B

+24B

GNDB

J706

/MAINMDEC

/MAINMFG

+24V

PWSW

J109

SOLD8

J9006

J9005

J9004

FSRPRESNS(GY)

N.C.

1234567

/MAINMDEC

/MAINMFG

/MAINMACC

MAINMFR

GNDB

12345678

J705

Power Switch

PCA

PGND

PGND

+24B

/MAINMACC

MAINMFR

Control Panel

(Base model)

+3.3V

FEED/CLR SW

13 12 11 10 9 8 2345617

Formatter(Base model)

Engine Controller Ass’y

SL1

MM

J701

1234

ROTMB

ROTMBN

ROTMA

ROTMAN

87654321

J110

SG

SW Y

SW C

SW M

FSRMB

M2M1

J702

4321

FSRMBN

FSRMA

FSRMAN

654321

13 12 11 10 9 8 2345617

SW K

SR7

J607

123

10 9 8 2345617

+24B

ROTHPSNS

SGND

+3.3T

J7

LED Y

LED K

LED C

LED M

ATT LE D

RDY LED

M3

M

J703

1234

FEEDMB

FEEDMBN

J112

FEEDMAN

SL

21

J115L

21

J115DH

J115D

FEEDMA

TR2ICLSLD

+24V

Control Panel

(Plus model)

+3.3V

LED Y

ATT LED

RDY LED

FEED/CLR SW

15 14 13 12 11 10 9 8 23457

J7WL

716543289101112131415

SG

SW Y

SW M

LED K

LED C

LED M

J5WL

SW K

SW C

WL SW

WL LED

Formatter(Plus model)

4

VDI

SGND

/VDI

987653214

10

J3

11

9

8765321

SC

SCLK

/TOP

/BDO

SGND

11

10

/CCRT

SLPWUP

J4

123456

11

J103

J140

21

17 16 15 14 13 12 11 10 9 8 2345617

J5

SGND

11

J108

M5

M

J802

PGND

DVSS(R)

N.C.

H801B

21

J2B

TB2B

TP1B

TB1B

TP

21

21

FU NEUTRAL(W)

231

FU LIVE(W)

J302B

RLD-

RLD+

SGND

PWSV

FSRD-

FSRD+

LVT100V

/REM3V V

FREQSNS

+3.3T

+3.3R

+3.3R

SGND

SGND

SGND

PISNS

321

+24R (R)

PGND (BL)

J606

FEEDSLD

SR6

21

J2A

TP1A

TB2A

TB1A

TP

100V 200V

21

H801A

12

SOLD2

65 4 3

Inlet

J1001

SOLD1

FU NEUTRAL(BK)

132

FU LIVE(BK)

LIVE1 (BK)

2341

NEUTRAL1 (W)

J302A

J201

231

J301

Intermediate PCA

FU LIVE(BK)

J101

FU NEUTRAL(W)

J102

SL2

SL

+24R

13 12 11 10 9 8 2345617

J203

21

J205

Low-voltage Power Supply Ass’y

FEEDSLD

+3.3V

+3.3V

+3.3V

SGND

SGND

SGND

21

J204

123456

J206

64 Chapter 2 Solve problems ENWW

Internal print-quality test pages

Print quality troubleshooting page

Interpret the Print Quality Page

1. Make sure that the product is idle and the Ready

light is on.

2. Load paper in the input tray.

3.

In the Windows system tray, right-click the Device Settings

icon and then click the product

name.

4. Click the Device Settings button.

5. Click the Print PQ Troubleshooting Page button.

This page contains five bands of color, which are divided into four groups as indicated in the following
illustration. By examining each group, you can isolate the problem to a particular print cartridge.

Section Print-cartridge

1Yellow

2Cyan

3Black

4Magenta

If dots or streaks appear in only one of the groups, replace the print cartridge that correlates with

●

that group.

If dots appear in more than one group, print a cleaning page. If this does not solve the problem,

●

determine if the dots are always the same color; for example, if magenta dots appear in all five
color bands. If the dots are all the same color, replace that print cartridge.

If streaks appear in multiple color bands, print a supplies status page to determine if the imaging

●

drum has reached its estimated end of life. If imaging drum has not reached its estimated end of
life, inspect the imaging drum for damage. If the imaging drum is not damaged, contact HP.

ENWW

Tools for troubleshooting

65

Clean the paper path

If you are experiencing toner specks or dots on the printouts, clean the paper path. This process uses a
transparency to remove dust and toner from the paper path. Do not use bond or rough paper.

NOTE: For best results use a sheet of LaserJet transparency. If you do not have any transparencies,

you can use copier-grade media (60 to 163 g/m

1. Make sure that the product is idle and the Ready light is on.

2. Load paper in the input tray.

2

(16 to 43 lb)) that has a smooth surface.

3.

In the Windows system tray, right-click the Device Settings
name.

4. Click the Device Settings tab.

5. Click the Print Cleaning Page button.

NOTE: The cleaning process takes about 2 minutes. The cleaning page stops periodically during the

cleaning process. Do not turn the product off until the cleaning process has finished. You might need to
repeat the cleaning process several times to thoroughly clean the product.

Print configuration page

The configuration page lists current product settings and properties. This page also contains a status log
report. To print a configuration page, do one of the following:

Select Print configuration page on the Services tab in the Printer Preferences.

●

Press and hold the Resume

●

supplies status page (English only).

icon and then click the product

button for two to three seconds to print a configuration page and a

66 Chapter 2 Solve problems ENWW

Print-quality troubleshooting tools

Repetitive image defects ruler

If the product output has a consistent, repetitive defect, then use the table in this section to determine
which part needs to be cleaned or replaced based on the measured distance between the repetitions of
the defect.

NOTE: Spots can be dark or white (dropouts), bands can be all shapes and sizes.

Component Distance between defects (mm) Type of defects

Developing roller

Primary charging roller

RS roller About 29 Dropouts

Secondary transfer roller About 47 Dropouts

Fuser film About 58 Dropouts

Pressure roller About 63 Dirt on page

ITB drive roller About 76 Spots

Photosensitive drum

1

The primary charging roller, photosensitive drum, and developing drum cannot be cleaned. If these rollers cause a repetitive
defect, replace the corresponding cartridge, either the imaging-drum cartridge, or developing cartridge.

1

1

1

About 22 Dropouts

Dark, sharp bands

About 26 Dropouts

Dirt on the back of page

Dirt on page

Loose toner

Dirt on the back of page

Loose toner

About 95 Dropouts

Dirt on page

Calibrate the product

If you experience any print-quality problems, calibrate the product.

1. Make sure that the product is idle and the Ready

2. Load paper in the input tray.

3.

In the Windows system tray, right-click the Device Settings
name.

4. Click the Device Settings button.

5. Click the Calibrate Now button.

ENWW

light is on.

icon and then click the product

Tools for troubleshooting

67

Interpret control panel light patterns

Table 2-1 Status light legend

Symbol for "light off"

Symbol for "light on"

Symbol for "light blinking"

Table 2-2 Control-panel light patterns

Light status State of the product Action

All lights are off.

The attention and ready lights are
cycling.

Ready light is on.

The product is turned off. Press the power button to turn on the

product.

The Auto-On/Auto-Off feature has turned
off the product.

The lights cycle during the formatter
initialization period or when the product
is processing a cleaning page.

The product is in the ready state. No action is required. The product is

No action is required.

No action is required. Wait for the
initialization period to end. The product
should enter the ready state when the
initialization period is finished.

ready to receive a print job.

Ready light blinks.

The product is receiving or processing
data.

No action is required. The product is
receiving or processing a print job.

68 Chapter 2 Solve problems ENWW

Table 2-2 Control-panel light patterns (continued)

Light status State of the product Action

Attention light blinks. Ready light is on.

Attention light blinks.

Attention and ready lights are on.

The product is in manual-feed mode. Load the correct paper type and size into

the input tray.

The product is waiting to print the second
side of a manual duplex print job.

The input tray is empty. Load the tray.

Paper is jammed in the product. Clear the jam.

The product has experienced a fatal error
from which it cannot recover.

Load the input tray with the paper from
the output bin.

1. Turn off the product and disconnect

the power cable from the product.

2. Wait 30 seconds and then

reconnect the power cord and turn
on the product.

3. Wait for the product to initialize.

Attention and ready lights blink.

Cartridge light blinks.

If the error persists, contact HP customer
support.

Paper is jammed in the product. Clear the jam.

The print cartridge has rotated and is
now accessible.

The print cartridge is missing or is not
installed correctly.

Access the print cartridge.

Install the print cartridge.

ENWW

Tools for troubleshooting

69

Table 2-2 Control-panel light patterns (continued)

Light status State of the product Action

Cartridge and attention lights blink.

Cartridge and ready lights are on.

The print cartridge is very low and has
reached the end of its estimated useful
life. When the supply has reached this
condition, the HP Premium Protection
warranty for that supply has ended.

A non-HP print cartridge in use. You do not need to replace the print

Print cartridge is rotating. No action is required. Wait for the

The print cartridge has reached the end
of its estimated useful life. When the
supply has reached this condition, the HP
Premium Protection warranty for that
supply has ended.

Non-HP print cartridge in use and is very
low.

You do not need to replace the print
cartridge at this time unless print quality
is no longer acceptable. Press the
Resume

cartridge at this time unless print quality
is no longer acceptable. Press the
Resume

rotation period to end. The product
should enter the previous state when the
rotation period is finished.

You do not need to replace the print
cartridge at this time unless print quality
is no longer acceptable.

No action is required.

button to continue.

button to continue.

Table 2-3 Wireless light patterns

Light status State of the product Action

Wireless light is off.

Wireless light blinks.

Wireless light is on.

The wireless connection is turned off.

The Ethernet is connected. No action is required.

The product is trying to establish a
wireless connection.

There is a WPS error. Attempt to connect again.

The product has established a wireless
connection.

Press and hold the Wireless
2 seconds to turn on the WPS.

No action is required.

No action is required.

button for

70 Chapter 2 Solve problems ENWW

Status alert messages

Status alert messages appear on the computer screen when the product has certain problems. Use the
information in the following table to solve these problems.

Alert message Description Recommended action

Black Cartridge Low The Black Cartridge Low setting is

customer configured on this product. If it is
customer configured, the print cartridge is
nearing the estimated end of its useful life.

Black Cartridge Very Low The print cartridge is at the estimated end of

its useful life.

Print quality may decrease. Choose a
reminder option or replace print cartridge
when quality becomes unacceptable.

If a customer has configured this setting, the
product indicates when a print cartridge
level is low. Actual cartridge life remaining
may vary. Consider having a replacement
available to install when print quality is no
longer acceptable. The print cartridge does
not need to be replaced now.

This alert displays only if the product is
configured to stop when the print cartridge
reaches the “very low” threshold.

To ensure optimal print quality, HP
recommends replacing the print cartridge at
this point. You do not need to replace the
print cartridge at this time unless print quality
is no longer acceptable. Actual print
cartridge life may vary.

Once an HP print cartridge has reached
“very low”, HP's Premium Protection
Warranty on that print cartridge has ended.
All print defects or 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.

Calibrating The product is performing the internal

calibration process to ensure the best
possible print quality.

Cartridge Memory Error on <Color> The e-label for one of the print cartridges

cannot be read or is missing.

Cool Down Mode After prolonged, continuous operation, or

after printing on narrow paper, the product
must pause to cool.

ENWW

Wait for the process to complete.

Reinstall the print cartridge.

●

Turn off the product and disconnect the

●

power cable from the product. Wait
30 seconds and then reconnect the
power cord and turn on the product.

If the problem is not solved, replace the

●

cartridge.

Printing will continue when the product has
cooled.

Tools for troubleshooting

71

Alert message Description Recommended action

Cyan Cartridge Low The Cyan Cartridge Low setting is

customer configured on this product. If it is
customer configured, the print cartridge is
nearing the estimated end of its useful life.

Cyan Cartridge Very Low The print cartridge is at the estimated end of

its useful life.

Print quality may decrease. Choose a
reminder option or replace print cartridge
when quality becomes unacceptable.

If a customer has configured this setting, the
product indicates when a print cartridge
level is low. Actual cartridge life remaining
may vary. Consider having a replacement
available to install when print quality is no
longer acceptable. The print cartridge does
not need to be replaced now.

This alert displays only if the product is
configured to stop when the print cartridge
reaches the “very low” threshold.

To ensure optimal print quality, HP
recommends replacing the print cartridge at
this point. You do not need to replace the
print cartridge at this time unless print quality
is no longer acceptable. Actual print
cartridge life may vary.

Once an HP print cartridge has reached
“very low”, HP's Premium Protection
Warranty on that print cartridge has ended.
All print defects or 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.

DC Controller Error The product has experienced an internal

error.

Engine Communication Error The product experienced an internal

communication error.

Front Access Door Open The door is open. Close the door.

Turn off the product and disconnect the
power cable from the product. Wait
30 seconds and then reconnect the power
cord and turn on the product. Wait for the
product to initialize.

If you are using a surge protector, remove it.
Plug the product directly into the wall socket.
Use the power button to turn on the product.

If the problem persists, replace the engine
controller assembly.

Turn off the product and disconnect the
power cable from the product. Wait
30 seconds and then reconnect the power
cord and turn on the product. Wait for the
product to initialize.

If you are using a surge protector, remove it.
Plug the product directly into the wall socket.
Use the power button to turn on the product.

72 Chapter 2 Solve problems ENWW

Alert message Description Recommended action

Fuser Error The product has experienced an error with

the fuser.

Imaging Drum Very Low The imaging drum is at the end of its useful

life.

Turn off the product and disconnect the
power cable from the product. Wait
30 seconds and then reconnect the power
cord and turn on the product. Wait for the
product to initialize.

If the error continues, turn off the product,
disconnect the power cable, wait at least
25 minutes, and then reconnect the power
cable and turn on the product.

If you are using a surge protector, remove it.
Plug the product directly into the wall socket.
Use the power button to turn on the product.

If the problem persists, replace the fuser
delivery assembly.

To ensure optimal print quality, HP
recommends replacing the imaging drum at
this point. You do not need to replace the
imaging drum at this time unless print quality
is no longer acceptable. Actual imaging
drum life may vary.

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.
HP's Premium Protection Warranty applies
only to the print cartridge for this product.
The imaging drum installation date displays
on both the configuration page and on the
supplies status page when the imaging drum
reaches approximately 30% of its estimated
remaining life.

Install <Color> Cartridge The cartridge is either not installed or not

correctly installed in the product.

Jam in <location>

(<location> indicates the area where the jam
has occurred)

Load Paper <Type> The tray is empty. Load print media into the tray.

The product has detected a jam. Clear the jam from the area indicated in the

ENWW

Install the print cartridge.

message. The job should continue to print. If
it does not, try reprinting the job.

If message persists after loading media into
the tray, check the TOP sensor flag. If the
flag is damaged, replace the product.

Tools for troubleshooting

73

Alert message Description Recommended action

Magenta Cartridge Low The Magenta Cartridge Low setting is

customer configured on this product. If it is
customer configured, the print cartridge is
nearing the estimated end of its useful life.

Magenta Cartridge Very Low The print cartridge is at the estimated end of

its useful life.

Print quality may decrease. Choose a
reminder option or replace print cartridge
when quality becomes unacceptable.

If a customer has configured this setting, the
product indicates when a print cartridge
level is low. Actual cartridge life remaining
may vary. Consider having a replacement
available to install when print quality is no
longer acceptable. The print cartridge does
not need to be replaced now.

This alert displays only if the product is
configured to stop when the print cartridge
reaches the “very low” threshold.

To ensure optimal print quality, HP
recommends replacing the print cartridge at
this point. You do not need to replace the
print cartridge at this time unless print quality
is no longer acceptable. Actual print
cartridge life may vary.

Once an HP print cartridge has reached
“very low”, HP's Premium Protection
Warranty on that print cartridge has ended.
All print defects or 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.

Manual feed The product is set for manual feed mode. Load the correct media into the tray, and

button to print the

button to continue

Non-HP <Color> Cartridge A non-HP supply has been installed. This

message appears until an HP supply is
installed or you press the Resume

Not Connected The product software cannot communicate

with the product.

Page Too Complex The product cannot process the page.

button.

then press the Resume
job.

If you believe you purchased an HP supply,

www.hp.com/go/anticounterfeit. Any

go to
product repair required as a result of using
used supplies is not covered under warranty.
Supply status and features depending on
supply status will not be available

Service or repairs that are required as a
result of using non-HP supplies are not
covered under HP warranty.

To continue printing, press the Resume
button.

1. Make sure the product is turned on.

2. Make sure the USB cable is connected

securely to the product and the
computer.

Press the Resume
printing the job, but output might be
affected.

Printer Mispick The print engine has failed to pick up a

piece of media.

Reload the media in the input tray and press
the Resume

button to continue the job.

74 Chapter 2 Solve problems ENWW

Alert message Description Recommended action

Printing The product is printing a document. Wait for printing to finish.

Rear Access Door Open The door is open. Close the door.

If the message persists when the door is
closed, check the sensor flag of the rear door
assembly. If the flag is damaged, replace the
rear door assembly.

Replace <Color> cartridge The product has been configured to stop

when the supply level is very low.

Scanner Error An internal error has occurred. Turn off the product and disconnect the

Supplies Very Low More than one print cartridge is at the end of

its useful life.

The corresponding cartridge lights on the
control panel remain on.

The product indicates when a supply level is
very low. Actual cartridge life remaining may
vary. Consider having a replacement
available to install when print quality is no
longer acceptable. The supply does not need
to be replaced now unless the print quality is
no longer acceptable. Once an HP supply
has reached “Very Low”, HP’s warranty on
that supply has ended.

power cable from the product. Wait
30 seconds and then reconnect the power
cord and turn on the product. Wait for the
product to initialize.

If you are using a surge protector, remove it.
Plug the product directly into the wall socket.
Use the power button to turn on the product.

The product indicates when a supply level is
very low. Actual cartridge life remaining may
vary. Consider having a replacement
available to install when print quality is no
longer acceptable. The supply does not need
to be replaced now unless the print quality is
no longer acceptable. Once an HP supply
has reached “Very Low”, HP’s warranty on
that supply has ended.

Tray 1 Jam The product has detected a jam in the tray. Clear the jam.

Unexpected Paper Size The paper in the tray is not the size specified

by the print job.

Used <Color> cartridge A used supply has been installed. This

message appears until an HP supply is
installed or you press the Resume

button.

ENWW

Load the correct paper size in the input tray
and then press the Resume
the job.

If you believe you purchased an HP supply,

www.hp.com/go/anticounterfeit. Any

go to
product repair required as a result of using
used supplies is not covered under warranty.
Supply status and features depending on
supply status will not be available

Service or repairs that are required as a
result of using non-HP supplies are not
covered under HP warranty.

To continue printing, press the Resume
button.

Tools for troubleshooting

button to print

75

Alert message Description Recommended action

Wrong Cartridge in <Color> Slot A print cartridge is installed in the incorrect

slot.

Yellow Cartridge Low The Yellow Cartridge Low setting is

customer configured on this product. If it is
customer configured, the print cartridge is
nearing the estimated end of its useful life.

Yellow Cartridge Very Low The print cartridge is at the estimated end of

its useful life.

Print quality may decrease. Choose a
reminder option or replace print cartridge
when quality becomes unacceptable.

Be sure that each print cartridge is in the
correct slot. Compare the color label on the
print cartridge with the color label in the slot.

If a customer has configured this setting, the
product indicates when a print cartridge
level is low. Actual cartridge life remaining
may vary. Consider having a replacement
available to install when print quality is no
longer acceptable. The print cartridge does
not need to be replaced now.

This alert displays only if the product is
configured to stop when the print cartridge
reaches the “very low” threshold.

To ensure optimal print quality, HP
recommends replacing the print cartridge at
this point. You do not need to replace the
print cartridge at this time unless print quality
is no longer acceptable. Actual print
cartridge life may vary.

Once an HP print cartridge has reached
“very low”, HP's Premium Protection
Warranty on that print cartridge has ended.
All print defects or 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.

76 Chapter 2 Solve problems ENWW

Clear jams

Prevent paper jams

To reduce the number of paper jams, try these solutions.

1. Use only paper that meets HP specifications for this product.

2. Use paper that is not wrinkled, folded, or damaged. If necessary, use paper from a different

package.

3. Use paper that has not previously been printed or copied on and does not have staples.

4. Make sure the tray is not overfilled. If it is, remove the entire stack of paper from the tray,

straighten the stack, and then return some of the paper to the tray.

5. Make sure the paper guides in the tray are adjusted correctly for the size of paper. Adjust the

guides so they are touching the paper stack without bending it.

6. If you are printing on heavy, embossed, or perforated paper, use the manual feed feature and

feed sheets one at a time.

ENWW

Clear jams

77

Jam locations

Jams can occur in these locations:

1 Output bin

1

2

3

2 Rear door

3Input tray

Loose toner might remain in the product after a jam. This problem typically resolves itself after a few
sheets have been printed.

Clear jams from the input tray

1. Remove the paper from the input tray.

78 Chapter 2 Solve problems ENWW

2. With both hands, grasp the paper, and

carefully pull it free from the product.

3. Open and close the print cartridge door to

reset the product.

ENWW

Clear jams

79

Clear jams from the output bin

CAUTION: Do not use sharp objects, such as tweezers or needle-nose pliers, to remove jams.

Damage caused by sharp objects will not be covered by the warranty.

1. With both hands, grasp the paper, and

carefully pull it free from the product.

80 Chapter 2 Solve problems ENWW

Clear jams from the rear door

1. Open the rear door.

2. With both hands, grasp the paper, and

carefully pull it free from the product.

3. Close the rear door.

ENWW

Clear jams

81

The product does not feed automatically

If the product does not pick up paper from the tray, try these solutions.

1. Open the product and remove any jammed sheets of paper.

2. Load the tray with the correct size of paper for your job.

3. Make sure the paper guides in the tray are adjusted correctly for the size of paper. Adjust the

guides so they are touching the paper stack without bending it.

4. Check the product control panel to see if the product is waiting for you to acknowledge a prompt

to feed the paper manually. Load paper, and continue.

The product feeds multiple sheets

If the product picks up multiple sheets of paper from the tray, try these solutions.

1. Remove the stack of paper from the tray and flex it, rotate it 180 degrees, and flip it over. Do not

fan the paper. Return the stack of paper to the tray.

2. Use only paper that meets HP specifications for this product.

3. Use paper that is not wrinkled, folded, or damaged. If necessary, use paper from a different

package.

4. Make sure the tray is not overfilled. If it is, remove the entire stack of paper from the tray,

straighten the stack, and then return some of the paper to the tray.

5. Make sure the paper guides in the tray are adjusted correctly for the size of paper. Adjust the

guides so they are touching the paper stack without bending it.

82 Chapter 2 Solve problems ENWW

Solve image-quality problems

This section helps you define print-quality problems and what to do to correct them. Often print-quality
problems can be handled easily by making sure that the product is maintained, using paper that meets
HP specifications, or running a cleaning page.

Image defects table

The following examples illustrate problems that would affect all the pages that you print, whether you
print in color or in black only. The topics that follow list the typical cause and solution for each of these
examples.

Problem Sample Cause Solution

Print is light or faded on entire
page.

Poor contact exist between the
ITB and the product ground
contacts.

Poor contact exists in the T1
bias and the ITB.

Poor contact with the
secondary transfer roller.

Clean the grounding contacts.

●

If the problem remains after
cleaning, check the contacts for
damage. Replace any
deformed or damaged parts.

Replace the ITB.

●

If the problem persists, replace

●

the product.

Clean the contacts. If the

●

problem remains after
cleaning, check the contacts for
damage. Replace any
deformed or damaged parts.

Replace the ITB.

●

If the problem persists, replace

●

the product.

Clean the contacts (product

●

and secondary transfer roller).
If the problem remains after
cleaning, check the contacts for
damage. Replace any
deformed or damaged parts.

ENWW

If the problem persists, replace

●

the rear door assembly.

Solve image-quality problems

83

Problem Sample Cause Solution

Print is light or faded in a
particular color.

Image is too dark.

A poor contact exists in the
developing bias contacts of
the developing cartridge.

The density ITB_TOP sensor is
defective.

If dirty, clean the contacts of

●

the product and developing
cartridge (reapply black
conductive grease).

Check the contacts for

●

damage. Replace any
deformed or damaged parts.

Verify that black conductive

●

grease is applied to the
contact. If the contacts are not
greased, apply grease to the
contacts.

Replace the developing

●

cartridge.

If the problem persists, replace

●

the product.

Replace the ITB.

Page is blank.

The page is all black or a solid
color.

The high-voltage power-supply
is defective (no developing
bias output).

Poor contact exists in the
primary charging bias of the
imaging-drum-cartridge.

Replace the ECU.

Clean the contacts of both the

●

imaging-drum-cartridge and the
product

If the error persists, replace the

●

imaging-drum-cartridge.

If the error persists, replace the

●

product.

84 Chapter 2 Solve problems ENWW

Problem Sample Cause Solution

White spots appear in an image

The back of the page is dirty.

Vertical streaks or bands appear
on the page.

The static charge eliminator is
dirty.

The T1 pad is deformed or
has deteriorated.

The secondary transfer roller
is deformed or has
deteriorated.

The secondary transfer roller
is dirty.

The fuser inlet guide or
separation guide is dirty.

The pressure roller is dirty. Run the cleaning page several times.

Scratches are present on the
circumference of the
photosensitive drum.

Scratches are present on the
circumference of the fuser
roller.

Clean the static charge eliminator.

Replace the ITB.

Replace the secondary transfer
roller.

Replace the secondary transfer
roller.

Clean the dirty parts. If the dirt does
not come off, replace the fuser
delivery assembly.

If the dirt does not come off, replace
the fuser delivery assembly.

Replace the imaging-drum-cartridge.

Replace the fuser delivery assembly.

Vertical white lines appear in a
particular color.

Vertical white lines appear in all
colors.

Scratches are present on the
circumference of the ITB.

The ITB drive roller is
deformed or has deteriorated.

The ITB cleaning mechanism is
malfunctioning.

The laser beam window is
dirty.

Scratches are present on the
circumference of the
developing roller.

The laser/scanner-unit mirror
is dirty.

Horizontal scratches on the
fuser film.

Scratches are present on the
circumference of the ITB.

Scratches are present on the
circumference of the
photosensitive drum.

Replace the ITB.

Clean the window and remove any
foreign substances.

Replace the developing cartridge for
affected color.

Replace the product.

Replace the fuser delivery assembly.

Replace the ITB.

Replace the imaging-drum-cartridge.

ENWW

No scratches are present on
any of the components above.

Solve image-quality problems

Replace the ITB.

85

Problem Sample Cause Solution

Horizontal lines appear on the
page.

A horizontal white line appears
on the page.

Image in a particular color does
not print in the correct color.

Repetitive horizontal lines
appear.

Horizontal scratches are
present on the fuser roller.

Repetitive horizontal white
lines appear.

Horizontal scratches are
present on the ITB.

Poor contact exists in the
developing bias contacts of
the developing cartridge.

Use the repetitive defects ruler to
identify the dirty roller. Clean the
roller. If the roller cannot be
cleaned, replace the corresponding
assembly.

Replace the fuser delivery assembly.

Use the repetitive defects ruler to
identify the dirty roller. Clean the
roller. If the roller cannot be
cleaned, replace the corresponding
assembly.

Replace the ITB.

Clean the contacts of the

●

product and developing
cartridge.

Verify that black conductive

●

grease is applied to the
contact. If the contacts are not
greased, apply grease to the
contacts.

Dropouts appear.

The developing cartridge
(developing roller) is
defective.

The high-voltage power-supply
is defective (no primary
charging bias or developing
bias output).

The secondary transfer roller
is deformed or has
deteriorated.

The developing roller is
deformed or has deteriorated.

The primary charging roller or
photosensitive drum is
deformed or deteriorated.

The fuser film is deformed or
has deteriorated.

Replace the developing

●

cartridge.

If the problem persists, replace

●

the product.

Replace the developing cartridge of
the color that matches the defect.

Replace the high-voltage power­supply lower.

Replace the secondary transfer
roller.

Replace the developing cartridge of
the color that matches the defect.

Replace the image drum cartridge.

Replace the fuser delivery assembly.

The high-voltage power-supply
is defective (no transfer bias
output).

Replace the ECU.

86 Chapter 2 Solve problems ENWW

Problem Sample Cause Solution

The toner is not fully fused to the
paper.

Some color is misregistered.

Toner smears appear on the
media.

The fuser film or pressure
roller is scarred or deformed.

The fuser control circuit is
defective.

The thermistor is defective. Replace the fuser delivery assembly.

The fuser heater is defective. Replace the fuser delivery assembly.

The product is incorrectly
calibrated.

The ITB unit is defective.

The ITB_TOP sensor is
defective.

The product has residual
paper.

Poor contact exists in the
primary charging bias of the
imaging-drum-cartridge.

The fuser inlet guide is dirty. Clean the fuser inlet guide.

Replace the fuser delivery assembly.

Replace the low-voltage power
supply.

Calibrate the product.

Replace the ITB.

Remove the residual paper.

Clean the contacts of both the

●

imaging-drum-cartridge and the
product

If the error persists, replace the

●

imaging-drum-cartridge.

The printed page contains
misformed characters.

Text or graphics are skewed on
the printed page.

The printed page contains
wrinkles or creases.

The product is experiencing
page skew.

The laser/scanner unit is
defective.

The pickup roller is deformed
or deteriorated.

The roller or feed guide is
dirty.

The feed roller is deformed or
has deteriorated.

The paper feed guide is
damaged.

See the “Text or graphics are
skewed on the printed page” row in
this table.

Replace the product.

Replace the pickup roller.

Clean any dirty components.

Replace the corresponding
components that include the roller or
the product.

Replace the corresponding
components that include the roller or
the product.

ENWW

Solve image-quality problems

87

Problem Sample Cause Solution

The front of the page is dirty.

Repetitive horizontal lines

Pages have flecks of toner

Pages have one or more skewed
color planes (can appear on the
right or left side of the page)

The photosensitive drum is
dirty.

The fuser roller or pressure
roller is dirty.

See repetitive image defect ruler.

Run the cleaning page several times.

Remove, and then reinstall the

Replace the imaging-drum-cartridge.

Run the cleaning page several times.
If the dirt does not come off, replace
the fuser delivery assembly.

Clean the indicated roller. If the
contaminate does not come off,
replace appropriate roller or
assembly.

If the dirt does not come off, replace
the fuser delivery assembly.

imaging-drum-cartridge associated
with the defect.

88 Chapter 2 Solve problems ENWW

Clean the product

Clean the separation pad or pickup roller

NOTE: The illustrations in this section show the pickup roller, however, cleaning the separation pad is

similar.

If you want to clean the separation pad or pickup roller before deciding to replace it, follow these
instructions:

1. Unplug the power cord from the product, and then remove the pickup roller. See

assembly on page 15 or Pickup roller on page 16.

2. Dab a lint-free cloth in isopropyl alcohol, and then scrub the pad or roller.

WARNING! Alcohol is flammable. Keep the alcohol and cloth away from an open flame.

Before you close the product and plug in the power cord, allow the alcohol to dry completely.

NOTE: In certain areas of California, air pollution control regulations restrict the use of liquid

isopropyl alcohol (IPA) as a cleaning agent. In those areas of California, disregard the previous
recommendations and use a dry, lint-free cloth, moistened with water, to clean the pickup roller.

3. Use a dry, lint-free cloth, to wipe the pad or roller to remove loose dirt.

Separation pad

ENWW

Clean the product

89