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: CE873-90934
Edition 1, 9/2010
Microsoft®, Windows®, Windows® XP, and
Windows Vista® are U.S. registered
trademarks of Microsoft Corporation.
ENERGY STAR and the ENERGY STAR
mark are registered U.S. marks.
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.
ENWWiii
Table of contents
1 Removal and replacement ............................................................................................................................. 1
3 Parts and diagrams ..................................................................................................................................... 117
Order parts by authorized service providers .................................................................................... 118
Order replacement parts .................................................................................................. 118
Related documentation and software .............................................................................. 118
Supplies part numbers ..................................................................................................... 118
Whole-unit replacement part numbers ............................................................................. 118
How to use the parts lists and diagrams .......................................................................................... 120
Index ................................................................................................................................................................. 169
xENWW
List of tables
Table 2-1 Major components ............................................................................................................................ 66
Table 3-12 Alphabetical parts list ................................................................................................................... 134
Table 3-13 Numerical parts list ....................................................................................................................... 137
Figure 1-1 Phillips and Pozidriv screwdriver comparison ................................................................................... 3
Figure 1-2 Parts-removal order .......................................................................................................................... 4
Figure 1-3 Remove the print cartridge ................................................................................................................ 5
Figure 1-4 Remove the pickup roller .................................................................................................................. 6
Figure 1-5 Remove the separation roller (1 of 2) ............................................................................................... 7
Figure 1-6 Remove the separation roller (2 of 2) ............................................................................................... 8
Figure 1-7 Remove the transfer roller (1 of 3) .................................................................................................... 8
Figure 1-8 Remove the transfer roller (2 of 3) .................................................................................................... 9
Figure 1-9 Remove the transfer roller (3 of 3) .................................................................................................... 9
Figure 1-10 Remove the feed assembly (1 of 2) .............................................................................................. 10
Figure 1-11 Remove the feed assembly (2 of 2) .............................................................................................. 10
Figure 1-12 Remove the right cover (1 of 4) .................................................................................................... 11
Figure 1-13 Remove the right cover (2 of 4) .................................................................................................... 11
Figure 1-14 Remove the right cover (3 of 4) .................................................................................................... 12
Figure 1-15 Remove the right cover (4 of 4) .................................................................................................... 12
Figure 1-16 Remove the left cover (1 of 4) ....................................................................................................... 13
Figure 1-17 Remove the left cover (2 of 4) ....................................................................................................... 13
Figure 1-18 Remove the left cover (3 of 4) ....................................................................................................... 14
Figure 1-19 Remove the left cover (4 of 4) ....................................................................................................... 14
Figure 1-20 Remove the front door and Tray 1 door (1 of 7) ........................................................................... 15
Figure 1-21 Remove the front door and Tray 1 door (2 of 7) ........................................................................... 15
Figure 1-22 Remove the front door and Tray 1 door (3 of 7) ........................................................................... 16
Figure 1-23 Remove the front door and Tray 1 door (4 of 7) ........................................................................... 16
Figure 1-24 Remove the front door and Tray 1 door (5 of 7) ........................................................................... 17
Figure 1-25 Remove the front door and Tray 1 door (6 of 7) ........................................................................... 17
Figure 1-26 Remove the front door and Tray 1 door (7 of 7) ........................................................................... 18
Figure 1-27 Remove the control-panel module (1 of 3) ................................................................................... 19
Figure 1-28 Remove the control-panel module (2 of 3) ................................................................................... 19
Figure 1-29 Remove the control-panel module (3 of 3) ................................................................................... 20
Figure 1-30 Remove the rear-side cover (1 of 2) ............................................................................................. 21
Figure 1-31 Remove the rear-side cover (2 of 2) ............................................................................................. 21
Figure 1-32 Remove the rear-upper cover (1 of 2) ........................................................................................... 22
Figure 1-33 Remove the rear-upper cover (2 of 2) ........................................................................................... 22
Figure 1-34 Remove the rear door and rear-lower cover (1 of 4) .................................................................... 23
ENWWxiii
Figure 1-35 Remove the rear door and rear-lower cover (2 of 4) .................................................................... 23
Figure 1-36 Remove the rear door and rear-lower cover (3 of 4) .................................................................... 24
Figure 1-37 Remove the rear door and rear-lower cover (4 of 4) .................................................................... 24
Figure 1-38 Remove the top cover (1 of 4) ...................................................................................................... 25
Figure 1-39 Remove the top cover (2 of 4) ...................................................................................................... 26
Figure 1-40 Remove the top cover (3 of 4) ...................................................................................................... 26
Figure 1-41 Remove the top cover (4 of 4) ...................................................................................................... 27
Figure 1-42 Remove the main motor (1 of 2) ................................................................................................... 27
Figure 1-43 Remove the main motor (2 of 2) ................................................................................................... 28
Figure 1-44 Remove the fuser motor (1 of 2) ................................................................................................... 29
Figure 1-45 Remove the fuser motor (2 of 2) ................................................................................................... 29
Figure 1-46 Remove the ITB (1 of 9) ................................................................................................................ 30
Figure 1-47 Remove the ITB (2 of 9) ................................................................................................................ 30
Figure 1-48 Remove the ITB (3 of 9) ................................................................................................................ 31
Figure 1-49 Remove the ITB (4 of 9) ................................................................................................................ 31
Figure 1-50 Remove the ITB (5 of 9) ................................................................................................................ 32
Figure 1-51 Remove the ITB (6 of 9) ................................................................................................................ 32
Figure 1-52 Remove the ITB (7 of 9) ................................................................................................................ 33
Figure 1-53 Remove the ITB (8 of 9) ................................................................................................................ 33
Figure 1-54 Remove the ITB (9 of 9) ................................................................................................................ 34
Figure 1-55 Reinstall the ITB (1 of 2) ............................................................................................................... 35
Figure 1-56 Reinstall the ITB (2 of 2) ............................................................................................................... 36
Figure 1-57 Remove the DC controller PCA (1 of 3) ........................................................................................ 38
Figure 1-58 Remove the DC controller PCA (2 of 3) ........................................................................................ 38
Figure 1-59 Remove the DC controller PCA (3 of 3) ........................................................................................ 39
Figure 1-60 Remove the formatter PCA (1 of 2) .............................................................................................. 41
Figure 1-61 Remove the formatter PCA (2 of 2) .............................................................................................. 41
Figure 1-62 Remove the wireless PCA ............................................................................................................ 42
Figure 1-63 Remove the power supply (high-voltage; 1 of 6) .......................................................................... 43
Figure 1-64 Remove the power supply (high-voltage; 2 of 6) .......................................................................... 44
Figure 1-65 Remove the power supply (high-voltage; 3 of 6) .......................................................................... 44
Figure 1-66 Remove the power supply (high-voltage; 4 of 6) .......................................................................... 45
Figure 1-67 Remove the power supply (high-voltage; 5 of 6) .......................................................................... 45
Figure 1-68 Remove the power supply (high-voltage; 6 of 6) .......................................................................... 46
Figure 1-69 Reinstall the power supply (high voltage) ..................................................................................... 46
Figure 1-70 Remove the power supply (low-voltage; 1 of 10) .......................................................................... 47
Figure 1-71 Remove the power supply (low-voltage; 2 of 10) .......................................................................... 48
Figure 1-72 Remove the power supply (low-voltage; 3 of 10) .......................................................................... 48
Figure 1-73 Remove the power supply (low-voltage; 4 of 10) .......................................................................... 49
Figure 1-74 Remove the power supply (low-voltage; 5 of 10) .......................................................................... 49
Figure 1-75 Remove the power supply (low-voltage; 6 of 10) .......................................................................... 50
Figure 1-76 Remove the power supply (low-voltage; 7 of 10) ....................................................................
Fi
Figure 1-78 Remove the power supply (low-voltage; 9 of 10) .......................................................................... 51
-77 Remove the power supply (low-voltage; 8 of 10) .......................................................................... 51
gure 1
...... 50
xivENWW
Figure 1-79 Remove the power supply (low-voltage; 10 of 10) ........................................................................ 52
Figure 1-80 Remove the power supply (fuser; 1 of 5) ...................................................................................... 53
Figure 1-81 Remove the power supply (fuser; 2 of 5) ...................................................................................... 53
Figure 1-82 Remove the power supply (fuser; 3 of 5) ...................................................................................... 54
Figure 1-83 Remove the power supply (fuser; 4 of 5) ...................................................................................... 54
Figure 1-84 Remove the power supply (fuser; 5 of 5) ...................................................................................... 55
Figure 1-85 Remove the fuser (1 of 4) ............................................................................................................. 56
Figure 1-86 Remove the fuser (2 of 4) ............................................................................................................. 57
Figure 1-87 Remove the fuser (3 of 4) ............................................................................................................. 57
Figure 1-88 Remove the fuser (4 of 4) ............................................................................................................. 58
Figure 2-1 Major components .......................................................................................................................... 66
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.
2Chapter 1 Removal and replacementENWW
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-in) 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
Service approach
Before performing service
Remove all paper from the product.
●
Turn off the power using the power switch.
●
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 cartridge.
●
ENWWElectrostatic discharge3
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.Print a demo page, and then verify that the print quality is as expected.
7.Send a print job from the host computer, and then verify that the output meets expectations.
8.Clean the outside of the product with a damp cloth.
Parts removal order
Use the following diagram to determine which parts must be removed before removing other parts.
Figure 1-2 Parts-removal order
ComponentRemove
Print cartridges
Pickup roller
Separation roller
Transfer roller
Feed assembly
Right cover
Left cover
Front door and Tray 1 door
Control-panel module
Rear-side cover
Rear-upper cover
Rear door and rear-lower cover
Top cover
Main motor
Fuser motor
Intermediate transfer belt
DC controller PCA
Formatter PCA
Wireless PCA
Power supply (high-voltage)
Power supply (low-voltage)
Power supply (fuser)
Fuser
Cartridge drawer
Tray 2
Tray 2
Tray 2
Tray 2
Right cover
Right cover
Right cover
Right cover
Right cover
Right cover
Right cover
Right cover
Right cover
Right cover
Right cover
Right cover
Right cover
Right cover
Right cover
Remove
Left cover
Left cover
Left cover
Left cover
Left cover
Control-panel module
Left cover
Left cover
Left cover
Left cover
RemoveRemove
Rear-side cover
Rear-side cover
Control panel moduleRear-side cover
Rear-side cover
Control panel module
Rear-side cover
Control panel module
Rear-side cover
Rear-side cover
Control panel module
Rear-side cover
Rear-upper cover
Rear-side cover
Rear door and
rear-door lower cover
Rear door and
rear-door lower cover
Rear-side cover
Remove
Rear-upper cover
Rear-upper cover
Top cover
Rear-upper cover
Rear-upper coverRear door and
RemoveRemove
rear-door lower cover
Top cover
4Chapter 1 Removal and replacementENWW
Removal and replacement procedures
Remove the print cartridges
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.
1.Open the front door and pull out the print-cartridge drawer.
2.Grasp the handle on the print cartridge, and then pull the cartridge straight up to remove it.
Repeat this step for the remaining print cartridges.
CAUTION:Do not touch the imaging drum on the bottom of the print cartridge. Finger prints on
the imaging drum can cause print-quality problems.
Do not allow the image drum to contact any surface when the cartridges are set down. Protect
the image drum at all times. Dust and debris can stick to the drum and cause print-quality
problems.
Figure 1-3 Remove the print cartridge
3.Close the print-cartridge and front doors.
ENWWRemoval and replacement procedures5
Rollers
Pickup roller
CAUTION:Do not touch the spongy roller surface unless you are going to replace the roller. Skin
oils on the roller can cause paper pickup problems.
1.Use the following procedure to rotate the roller into the position required to remove it.
Open the Secondary Service menu by pressing and holding both the Left arrow (
●
Cancel button simultaneously.
Use the arrow buttons to select Pick roller, and then press the OK button.
●
Press the OK button again to confirm that you want the pick roller to rotate.
●
Turn the power off.
●
2.Remove Tray 2, and then carefully place the product front-side up.
NOTE:Debris can scratch or damage the back of the product. Before you place the product
front-side up, remove any debris from the work surface. If possible, set the product on a clean,
dry cloth to prevent scratching and damage.
3.Release the two white plastic locking tabs and remove the pickup roller.
Figure 1-4 Remove the pickup roller
) and the
6Chapter 1 Removal and replacementENWW
Separation roller
CAUTION:Do not touch the spongy roller surface unless you are going to replace the roller. Skin
oils on the roller can cause paper pickup problems.
1.Remove paper tray (if installed), and then carefully place the product front-side up.
NOTE:Debris can scratch or damage the back of the product. Before you place the product
front-side up, remove any debris from the work surface. If possible, set the product on a clean,
dry cloth to prevent scratching and damage.
2.Carefully release the roller cover and rotate it down and away from the roller.
Reinstallation tipMake sure that this cover snaps into place over the roller when the roller
and holder are reinstalled.
Figure 1-5 Remove the separation roller (1 of 2)
ENWWRemoval and replacement procedures7
3.Use a small flat blade screwdriver to gently pry up on the roller and holder assembly (callout 1)
to remove the roller and holder assembly.
Figure 1-6 Remove the separation roller (2 of 2)
Transfer roller
1
1.Open the rear door.
2.Release the retainer clip and then rotate it until the pin on the clip aligns with the slot in the
mounting bracket.
Figure 1-7 Remove the transfer roller (1 of 3)
8Chapter 1 Removal and replacementENWW
3.Remove the clip. Repeat these steps for the remaining retainer clip.
TIP:One of the clips is made from a black conductive plastic. Make sure that the clips are
reinstalled on the side of the transfer roller that they are removed from.
Figure 1-8 Remove the transfer roller (2 of 3)
4.Slide the roller to one side to disengage the roller shaft from the mounting bracket, and then
remove the transfer roller.
CAUTION:Do not touch the black sponge portion of the roller. Skin oils can cause print-quality
problems.
Figure 1-9 Remove the transfer roller (3 of 3)
Feed assembly
1.Open the rear door.
ENWWRemoval and replacement procedures9
2.Release one captive screw (callout 1) and release two tabs (callout 2).
Figure 1-10 Remove the feed assembly (1 of 2)
2
1
3.Remove the transfer roller assembly
Figure 1-11 Remove the feed assembly (2 of 2)
External panels, covers, and doors
Right cover
1.Remove Tray 2.
10Chapter 1 Removal and replacementENWW
2.Remove one screw (callout 1).
Figure 1-12 Remove the right cover (1 of 4)
1
3.Carefully pry the front of the right cover away from the product to release one tab.
Figure 1-13 Remove the right cover (2 of 4)
ENWWRemoval and replacement procedures11
4.Use a small flatblade screwdriver to release three tabs (callout 2) at the back of the product.
Figure 1-14 Remove the right cover (3 of 4)
5.Rotate the bottom of the cover away from the product, and then slide it up to remove it.
Figure 1-15 Remove the right cover (4 of 4)
12Chapter 1 Removal and replacementENWW
Left cover
1.Remove Tray 2.
2.Remove one screw (callout 1).
Figure 1-16 Remove the left cover (1 of 4)
1
3.Open the front door, and then use a small flatblade screwdriver to release three tabs (callout 2).
NOTE:It might be easier to release the tabs if you first release the bottom tab, then the middle
tab, and then the top tab.
Figure 1-17 Remove the left cover (2 of 4)
2
ENWWRemoval and replacement procedures13
4.Use a small flatblade screwdriver to release two tabs (callout 3) at the back of the product.
CAUTION:The bottom tab might be difficult to release. Make sure that you do not break the
tab.
Figure 1-18 Remove the left cover (3 of 4)
5.Rotate the bottom of the cover away from the product, and then slide it up to remove it.
Figure 1-19 Remove the left cover (4 of 4)
14Chapter 1 Removal and replacementENWW
Front door and Tray 1 door
The Tray 1 door is located below the front door.
1.Open the Tray 1 door.
Push down on the priority-feed tray to release it.
Figure 1-20 Remove the front door and Tray 1 door (1 of 7)
2.Carefully push the left-side Tray 1 door hinge in toward the center of the door to release it from
the hinge pin.
Figure 1-21 Remove the front door and Tray 1 door (2 of 7)
ENWWRemoval and replacement procedures15
3.Lower the left side of the door and then slide it to the left to release the right-side hinge. Remove
the door.
Figure 1-22 Remove the front door and Tray 1 door (3 of 7)
1
4.Open the front door, and then use a small flatblade screwdriver to release one tab (callout 1) on
the left-side front-door cam.
Figure 1-23 Remove the front door and Tray 1 door (4 of 7)
2
1
16Chapter 1 Removal and replacementENWW
5.Slide the cam toward the center of the door to remove it. Repeat this step for the right-side front-
door cam.
CAUTION:The hinge pin (callout 2) on the cam can be easily broken. You must apply even
pressure on the cam to remove it without using any twisting motion that might break the hinge
pin off of the cam.
Figure 1-24 Remove the front door and Tray 1 door (5 of 7)
2
6.Carefully flex the edges of the door to release the right- and left-side door retainer arms.
Figure 1-25 Remove the front door and Tray 1 door (6 of 7)
ENWWRemoval and replacement procedures17
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