Removal and replacement. HP Color LaserJet 3800 3800, Color LaserJet 3600 3600, Color LaserJet 3000 3000
Reklaam
Reklaam
5 Removal and replacement
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Removal and replacement strategy
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External doors, covers, and panels
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●
Printed circuit assemblies (PCAs)
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ENWW 69
Removal and replacement strategy
Introduction
This chapter describes the removal and replacement of field-replaceable units (FRUs) only.
Replacing FRUs is generally the reverse of removal. Occasionally, notes are included to provide directions for difficult or critical replacement procedures.
HP does not support repairing individual subassemblies or troubleshooting to the component level.
WARNING!
Turn the printer off, wait 5 seconds, and then remove the power cord before attempting to service the printer. If this warning is not followed, severe injury can result, as well as damage to the device. The power must be on for certain functional checks during troubleshooting. However, the power supply should be disconnected during parts removal.
Never operate or service the printer 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
Some parts are sensitive to electrostatic discharge (ESD). Look for the
ESD reminder when removing printer parts. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
CAUTION
Do not bend or fold the flat flexible cables (FFCs) during removal or installation.
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 selftapping screw-hole becomes stripped, repair the screw-hole or replace the affected assembly.
The printer shown in this chapter is a duplex model. It has a duplex fan mounted to the front cover, a duplex-feed-drive assembly, and a duplexing-reverse-drive assembly mounted under the upper (top) cover. Simplex model printers do not have these parts.
The electrostatic transfer belt (ETB) shown in this chapter is for the duplex model printer. The
ETB for the simplex model looks different.
70 Chapter 5 Removal and replacement ENWW
Required tools
●
#2 Phillips screwdriver with a magnetic tip and a 152-mm (6-inch) shaft length
●
Small flatblade screwdriver
●
Needle-nose pliers
●
ESD mat (if one is available)
●
Penlight (optional)
CAUTION
Always use a Phillips screwdriver (callout 1). Do not use a pozidrive screwdriver
(callout 2) or any motorized screwdriver. These can damage screws or screw threads.
CAUTION
Do not pull directly on the wires to disconnect them. Always pull on the plastic body of a connector to avoid damaging the connector wires.
Figure 5-1
Phillips and pozidrive screwdriver comparison
ENWW Removal and replacement strategy 71
Illustration
Types of screws
Description
Screw with washer
Size
M3X8
Screw, RS
Screw, tapping, truss head
M3X6
M3X10
M4X10
Part Number
XA9–1420–000CN
XA9–1499–000CN
Use
Used to secure metal components to metal components (for example, a ground wire to the frame)
Used to secure metal to metal
XB4–7401–000CN Used to secure anything to plastic
72 Chapter 5 Removal and replacement ENWW
Service approach
Printer repair normally begins by using the printer internal diagnostics and the following two-step process:
1.
Isolate the problem to the major system (for example, the network or server, or the printer).
2.
Troubleshoot the problem by using the procedures in chapter 6.
After a faulty part is located, the printer can usually be repaired at the assembly level by replacing field-replaceable units (FRUs). Some mechanical assemblies might need to be repaired at the subassembly level. Hewlett-Packard Company does not support replacement of components on the printed circuit assembles.
Before performing service
●
Remove all media.
●
Unplug the power cable.
●
Place the product on an ESD mat (if available).
●
Remove the print cartridges.
●
Remove the tray 2 cassette.
After performing service
●
Return all media to the trays.
●
Plug in the power cable.
●
Reinstall the print cartridges.
●
Reinstall the tray 2 cassette.
ENWW Removal and replacement strategy 73
Print cartridges
1.
Open the front cover.
Figure 5-2
Remove the print cartridges (1 of 2)
2.
Grasp the two blue handles on the print cartridge, and pull the cartridge out of the printer.
Figure 5-3
Remove the print cartridges (2 of 2)
74 Chapter 5 Removal and replacement ENWW
External doors, covers, and panels
Front cover
This part is called the front door in the user documentation and in chapter 1, “Product information.”
NOTE
The printer shown in the following procedure is a duplex model, and has a fan mounted to the front-cover assembly. Simplex model printers do not have one.
NOTE
The ETB shown in this procedure is for the duplex model printer. The ETB for the simplex model looks different.
1.
Open the front cover.
2.
Push in the two blue ETB latch buttons (callout 1) and pull the ETB out of the printer.
1
Figure 5-4
Remove the front cover (1 of 7)
ENWW External doors, covers, and panels 75
3.
Move the two ETB connectors (callout 2) to the raised position (as when the front cover is closed).
2
Figure 5-5
Remove the front cover (2 of 7)
4.
Lift the front cover slightly, and then gently pry the retainer arms off of the clips.
Figure 5-6
Remove the front cover (3 of 7)
76 Chapter 5 Removal and replacement ENWW
5.
For duplex models, use the following procedure to remove the fan. For simplex models, skip to the next step.
a.
Remove two screws (callout 3) that secure the fan to the cover and one screw that secures the wire-harness cover (callout 4).
4
3
Figure 5-7
Remove the front cover (4 of 7)
b.
Use a small flatblade screwdriver to release the wire-harness-cover locking tab (callout 5) and remove the wire-harness cover.
Remove the fan and set it next to the printer.
ENWW
Figure 5-8
Remove the front cover (5 of 7)
External doors, covers, and panels 77
6.
Support the door and remove four screws (callout 6).
6
Figure 5-9
Remove the front cover (6 of 7)
78 Chapter 5 Removal and replacement ENWW
7.
Pull the front cover forward to remove it.
Figure 5-10
Remove the front cover (7 of 7)
Hint
Duplex model only: When you reinstall the duplex-fan wire-harness, make sure that the wire-harness is clipped correctly to the door.
ENWW External doors, covers, and panels 79
Upper cover (fuser door)
1.
Rotate the output bin towards the front of the printer and remove it.
Figure 5-11
Remove the upper cover (1 of 5)
2.
Open the upper cover, and then squeeze the two blue fuser-locking levers to release the fuser.
Rotate the fuser up and out of the printer.
CAUTION
The fuser might be hot. Wait for the fuser to cool before you remove it.
Figure 5-12
Remove the upper cover (2 of 5)
80 Chapter 5 Removal and replacement ENWW
3.
Support the upper cover and remove four screws (callout 1).
NOTE
The screw in the recessed area (see
Figure 5-13 Remove the upper cover (3 of
5) on page 81 ) is longer than the other three mounting screws. Make sure to replace this
screw in the correct location when installing the upper cover.
1
Figure 5-13
Remove the upper cover (3 of 5)
4.
Lift up slightly on the right of the upper cover and disconnect one connector (callout 2).
2
ENWW
Figure 5-14
Remove the upper cover (4 of 5)
External doors, covers, and panels 81
5.
Lift the upper cover to remove it.
Figure 5-15
Remove the upper cover (5 of 5)
Hint
Make sure that the upper cover is seated correctly when it is reinstalled. Wireharness cables can block the cover alignment pin and become pinched or frayed when the cover is fastened to the chassis.
82 Chapter 5 Removal and replacement ENWW
Rear lower cover
1.
Carefully flex the hinge bracket until you can dislodge the hinge pin. Move the rear lower cover away from the bracket to remove it.
Figure 5-16
Remove the rear lower cover (1 of 2)
NOTE
Step 2 is only necessary if you are removing the rear upper cover or installing a replacement hinge bracket.
2.
Remove one screw (callout 1), and then remove the hinge bracket (callout 2).
ENWW
1
2
Figure 5-17
Remove the rear lower cover (2 of 2)
External doors, covers, and panels 83
Left cover
1.
Remove the following components:
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Rear lower cover. See
2.
Remove two screws (callout 1).
1
Figure 5-18
Remove the left cover (1 of 5)
3.
Open the front cover.
4.
Use a flatblade screwdriver to release the three locking tabs (callout 2) at the front of the left cover.
2
Figure 5-19
Remove the left cover (2 of 5)
84 Chapter 5 Removal and replacement ENWW
5.
Release the locking tab (callout 3) at the upper front of the left cover.
3
Figure 5-20
Remove the left cover (3 of 5)
6.
Release the two locking tabs at the rear of the left cover.
ENWW
Figure 5-21
Remove the left cover (4 of 5)
External doors, covers, and panels 85
7.
Rotate the back of the cover away from the printer, and then slide the cover to the rear to disengage the two front locking tabs and release the cover.
Figure 5-22
Remove the left cover (5 of 5)
NOTE
This photograph shows the two front locking tabs low on the inside of the left cover.
86 Chapter 5 Removal and replacement ENWW
Right cover
1.
Remove the following components:
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Formatter cage. See Formatter cage on page 92 .
2.
Remove one screw (callout 1).
1
Figure 5-23
Remove the right cover (1 of 4)
3.
Open the front cover.
ENWW External doors, covers, and panels 87
4.
Use a flatblade screwdriver to release the two locking tabs (callout 2) on the front of the right cover, and the tab on the printer chassis (callout 3).
3
2
Figure 5-24
Remove the right cover (2 of 4)
NOTE
This photograph shows the front locking tabs on the inside of the right cover.
88 Chapter 5 Removal and replacement ENWW
5.
Remove the power-switch arm.
Figure 5-25
Remove the right cover (3 of 4)
ENWW External doors, covers, and panels 89
6.
Remove the cover by releasing the two rear locking tabs.
Figure 5-26
Remove the right cover (4 of 4)
Hint
When installing the right cover, make sure that the metal power-switch arm is engaged with the power switch.
90 Chapter 5 Removal and replacement ENWW
ENWW
Rear upper cover
1.
Remove the following components:
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Rear lower cover. See
.
●
Left cover. See Left cover on page 84 .
●
Right cover. See
.
2.
Release the cover by removing 10 screws (callout 1).
1
Figure 5-27
Remove the rear upper cover
External doors, covers, and panels 91
Internal assemblies
Formatter cage
WARNING!
Do not replace the formatter and the DC controller at the same time. Install the replacement formatter and then turn the power on. After the printer initializes, turn the power off and install the replacement DC controller.
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
●
Mono cycle count
●
Color cycle count
●
Refurbish cycle count
●
Serial number
●
Service ID
2.
Push in on the two black locking levers.
92 Chapter 5 Removal and replacement ENWW
ENWW
3.
Pull the formatter cage away from the printer to remove it.
Figure 5-28
Remove the formatter cage
4.
Open the service menu (see Service menu on page 221
) and transfer the values from step 1 to the replacement formatter.
5.
When you install a replacement formatter, you must calibrate the printer. See
Calibrating the printer on page 38 .
NOTE
After replacing the formatter cage, make sure that the control panel is functioning. If the printer fans and motors are operating correctly but the control panel is not, turn the power off, and then remove the formatter cage and reinstall it. You might have to repeat this step several times to seat the formatter correctly.
Internal assemblies 93
Electrostatic transfer belt (ETB)
NOTE
The ETB shown in this procedure is for the duplex model. The ETB for the simplex model looks different, but the procedure for removing it is the same as for the duplex model.
1.
Open the front cover.
2.
Push in the two blue latch buttons (callout 1) and pull the ETB out of the printer.
1
Figure 5-29
Remove the front ETB
94 Chapter 5 Removal and replacement ENWW
ENWW
Fuser
CAUTION
The fuser might be hot. Wait for the fuser to cool before you remove it.
1.
Open the upper (top) cover (fuser door).
2.
Squeeze the two blue fuser locking levers to release the fuser.
3.
Rotate the fuser up and out of the printer.
Figure 5-30
Remove the fuser
Internal assemblies 95
Duplex fan
NOTE
The printer shown is the duplex model, and has a duplex fan mounted to the frontcover assembly. Simplex model printers do not have this part. If you are repairing a simplex model printer, ignore this procedure.
1.
Open the front cover.
2.
Remove the two screws (callout 1) that secure the fan to the front cover and one screw that secures the wire-harness cover (callout 2).
2
1
Figure 5-31
Remove the duplex fan (1 of 3)
96 Chapter 5 Removal and replacement ENWW
3.
Use a small flatblade screwdriver to release the wire-harness-cover locking tab (callout 3).
Remove the harness cover.
3
Figure 5-32
Remove the duplex fan (2 of 3)
NOTE
When you reinstall the duplex-fan wire harness, make sure that the wire-harness is clipped correctly to the door.
ENWW Internal assemblies 97
4.
Disconnect one connector (callout 4) and remove the fan.
4
Figure 5-33
Remove the duplex fan (3 of 3)
Hint
When you reinstall the duplex-fan wire-harness, make sure that the wire-harness is clipped correctly to the door.
98 Chapter 5 Removal and replacement ENWW
ENWW
Print-cartridge drive motors
NOTE
The HP Color LaserJet 3000 uses a different black-print-cartridge drive motor from the HP Color LaserJet 3600/3800 printer. You must use the correct black-print-cartridge drive motor for the HP Color LaserJet 3000. Make sure that you order the black-print-cartridge drive motor that is appropriate for the model. (The black-print-cartridge drive motor for the HP Color
LaserJet 3000 has one additional pin in the wire-harness connector.)
1.
Remove the right cover. See
2.
To remove the motor, disconnect one connector (callout 1) and remove three screws (callout 2).
Repeat this procedure for the remaining print-cartridge motors.
2
1
2
Figure 5-34
Remove the print-cartridge motor
Internal assemblies 99
Duplex-reverse-drive assembly
NOTE
The printer shown is the duplex model, and contains a duplex-reverse-drive assembly. Simplex model printers do not have this part. If you are repairing simplex model printer, ignore the following procedure.
1.
Remove the upper cover. See
Upper cover (fuser door) on page 80
.
2.
Turn the upper cover over and place it on a flat surface.
3.
Remove the duplex driver PCA. See Duplex-driver PCA on page 147 .
4.
Release the tab on the delivery-roller retainer, and rotate the retainer up into the unlocked position and remove it.
Figure 5-35
Remove the duplex-reverse-drive assembly (1 of 5)
100 Chapter 5 Removal and replacement ENWW
5.
Slide the delivery roller and retainer out of the upper cover.
NOTE
When you reinstall the roller, make sure that the locking tabs on the right roller collar are inserted into the slots in the assembly.
ENWW
Figure 5-36
Remove the duplex-reverse-drive assembly (2 of 5)
6.
Remove two screws (callout 1), and then remove the delivery-guide assembly (callout 2).
1
2
Figure 5-37
Remove the duplex-reverse-drive assembly (3 of 5)
Internal assemblies 101
7.
Remove two screws (callout 3).
3
Figure 5-38
Remove the duplex-reverse-drive assembly (4 of 5)
8.
Rotate the duplex-reverse-drive assembly up and out of the upper cover.
Figure 5-39
Remove the duplex-reverse-drive assembly (5 of 5)
102 Chapter 5 Removal and replacement ENWW
ENWW
Duplex-feed-drive assembly
NOTE
The printer shown is the duplex model, and contains a duplex-feed drive assembly.
Simplex model printers do not have this part. If you are repairing a simplex model printer, ignore the following procedure.
1.
Remove the following components:
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Right cover. See
.
2.
Disconnect one connector (callout 1) and remove three screws (callout 2).
2
1
Figure 5-40
Remove the duplex-feed-drive assembly (1 of 2)
Internal assemblies 103
3.
Carefully lift and rotate the duplex-feed-drive assembly to remove it.
Figure 5-41
Remove the duplex-feed-drive assembly (2 of 2)
104 Chapter 5 Removal and replacement ENWW
ENWW
Fuser drive assembly
1.
Remove the following components:
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Right cover. See
.
●
Duplex-feed-drive assembly (duplex model only). See Duplex-feed-drive assembly on page 103 .
2.
Disconnect one connector (callout 1) and release two cable clamps (callout 2).
1
2
Figure 5-42
Remove the fuser drive assembly (1 of 4)
Internal assemblies 105
3.
Remove four screws (callout 3).
3
Figure 5-43
Remove the fuser drive assembly (2 of 4)
4.
Disconnect one connector (callout 4; J213) on the driver PCA assembly and remove the wireharness from the guide (callout 5).
4
Figure 5-44
Remove the fuser drive assembly (3 of 4)
Hint
You might have to use needle-nose pliers to reattach the cable straps to the two cable clamps.
106 Chapter 5 Removal and replacement ENWW
5.
Lift the fuser drive assembly off of the printer chassis.
Figure 5-45
Remove the fuser drive assembly (4 of 4)
ENWW Internal assemblies 107
Developing separation-drive assembly
1.
Remove the following components:
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Right cover. See
●
Fuser. See
2.
Use a small flatblade screwdriver to release the wire-guide locking tab (callout 1), and then move the guide slightly towards the front of the printer.
1
Figure 5-46
Remove the developing separation-drive assembly (1 of 4)
108 Chapter 5 Removal and replacement ENWW
3.
Remove three screws (callout 2) and the sheet-metal plate (callout 3).
3
2
Figure 5-47
Remove the developing separation-drive assembly (2 of 4)
4.
Disconnect two connectors (callout 4; J403 and J405) on the driver PCA and remove the wireharnesses from the two retainers (callout 5).
ENWW
4
Figure 5-48
Remove the developing separation-drive assembly (3 of 4)
Hint
When you reinstall the developing separation-drive assembly, the upper solenoid wire-harness connects to J405 and the lower solenoid wire-harness connects to J403.
Internal assemblies 109
5.
Remove three screws (callout 6) to release the developing separation-drive assembly.
6
Figure 5-49
Remove the developing separation-drive assembly (4 of 4)
NOTE
The upper drive gear (callout 7) behind the developing separation-drive assembly is not captive. Be careful not to lose the gear.
7
110 Chapter 5 Removal and replacement ENWW
ENWW
Pickup-and-feed assembly
1.
Remove the following components:
●
Front cover. See
.
●
Left cover. See Left cover on page 84 .
2.
Disconnect one connector (callout 1) on the left side of the printer.
Hint
Remove the wire-harness from the guide on the pickup-and-feed assembly to make it easier to detach the connector.
1
Figure 5-50
Remove the pickup-and-feed assembly (1 of 8)
Internal assemblies 111
3.
Remove one screw (callout 2), and then remove the gear cover.
2
Figure 5-51
Remove the pickup-and-feed assembly (2 of 8)
4.
Remove two screws (callout 3), and then remove the two sheet-metal covers (callout 4).
CAUTION
Do not bend the locator tabs on the covers.
3
4
Figure 5-52
Remove the pickup-and-feed assembly (3 of 8)
112 Chapter 5 Removal and replacement ENWW
5.
Release the locking tab (callout 5) on the pickup-and-feed driver PCA cover (callout 6), and then remove the cover.
CAUTION
Do not damage or bend the print-cartridge high-voltage springs (callout 7) when you remove the cover.
Hint
It might be easier to remove the cover if you squeeze the right end of the cover, and then lift it slightly up and to the right to release it.
7
6
Figure 5-53
Remove the pickup-and-feed assembly (4 of 8)
6.
Disconnect five connectors (callout 8).
8
ENWW
Figure 5-54
Remove the pickup-and-feed assembly (5 of 8)
Internal assemblies 113
7.
Remove two screws (callout 9) from the left side of the assembly.
9
Figure 5-55
Remove the pickup-and-feed assembly (6 of 8)
8.
Remove two screws (callout 10) from the right side of the assembly.
Hint
When you reinstall the lower screw, you might need to rotate the cam so it does not block access to the screw-hole.
10
Figure 5-56
Remove the pickup-and-feed assembly (7 of 8)
114 Chapter 5 Removal and replacement ENWW
9.
Lift the pickup-and-feed assembly out of the printer.
Figure 5-57
Remove the pickup-and-feed assembly (8 of 8)
Hint
Slightly flex the chassis when you reinstall the pickup-and-feed assembly. Make sure that the assembly is flush with the chassis after it is installed.
ENWW Internal assemblies 115
Pickup-drive assembly
1.
Remove the following components:
●
Front cover. See
●
Right cover. See
●
Pickup-and-feed assembly. See
Pickup-and-feed assembly on page 111 .
116 Chapter 5 Removal and replacement ENWW
2.
Release the locking tab (callout 1) on the cassette guide rail to the right, and slide the rail forward to remove it.
1
Figure 5-58
Remove the pickup-drive assembly (1 of 13)
NOTE
This photograph shows the locking tab and retainers on the guide rail.
ENWW Internal assemblies 117
3.
Remove one screw (callout 2) and remove the front-cover hinge (callout 3).
2
3
Figure 5-59
Remove the pickup-drive assembly (2 of 13)
4.
Rotate the retainer arm (callout 4) up until the tab on the pivot pin (callout 5) is aligned with the slot in the retainer arm, and then slide the retainer off of the pivot pin.
4
Figure 5-60
Remove the pickup-drive assembly (3 of 13)
118 Chapter 5 Removal and replacement ENWW
ENWW
5.
Remove all of the wire-harnesses from the guide (callout 6).
6
Figure 5-61
Remove the pickup-drive assembly (4 of 13)
6.
Disconnect three connectors (callout 7).
7
Figure 5-62
Remove the pickup-drive assembly (5 of 13)
Internal assemblies 119
7.
Remove one screw (callout 8), and then lift up on the locking tab (callout 9) to release it.
Remove the guide (callout 10).
8
10
9
Figure 5-63
Remove the pickup-drive assembly (6 of 13)
Hint
When you reinstall the guide, make sure that the rear locking tab is seated in the sheet-metal chassis.
120 Chapter 5 Removal and replacement ENWW
8.
Release the retainer tabs on the ETB connector link arm (callout 11) and slide the link arm off of the pivot pin.
11
Figure 5-64
Remove the pickup-drive assembly (7 of 13)
9.
Rotate the link arm until the tab on the pivot pin (callout 12) is aligned with the slot in the link arm. Remove the link arm.
Hint
The link arm causes the print-cartridge-shutter doors to open when the front cover is closed. If the shutter doors are not operating correctly, make sure that the link arm is correctly installed.
ENWW
12
Figure 5-65
Remove the pickup-drive assembly (8 of 13)
Internal assemblies 121
10.
Remove two screws (callout 13), and then remove the ETB connector bracket (callout 14).
14
13
Figure 5-66
Remove the pickup-drive assembly (9 of 13)
11.
Remove one screw (callout 15), and then remove the sheet-metal support bracket (callout 16).
16
15
Figure 5-67
Remove the pickup-drive assembly (10 of 13)
122 Chapter 5 Removal and replacement ENWW
12.
Remove four screws (callout 17).
17
Figure 5-68
Remove the pickup-drive assembly (11 of 13)
13.
Carefully turn the printer onto its right side. Gently pry the sheet-metal bottom plate off of its locator pins (callout 18) and away from the pickup-drive assembly (callout 19).
NOTE
The plastic printer foot can be dislodged when the bottom plate is separated from the chassis. Be careful to not lose the printer foot.
ENWW
18
19
Figure 5-69
Remove the pickup-drive assembly (12 of 13)
Internal assemblies 123
14.
Remove two screws (callout 20) to release the pickup-drive assembly.
NOTE Figure 5-70 Remove the pickup-drive assembly (13 of 13) on page 124
shows the pickup drive assembly from the tray 2 cassette side.
20
Figure 5-70
Remove the pickup-drive assembly (13 of 13)
CAUTION
The small gear assembly above the pickup-drive-assembly motor is not captive. Do not lose the gears when you remove the drive assembly.
124 Chapter 5 Removal and replacement ENWW
ENWW
Laser/scanner assembly
NOTE
Always perform a full calibration procedure when you replace the laser/scanner assembly.
1.
Remove the following components:
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Rear lower cover. See
.
●
Left cover. See Left cover on page 84 .
●
Right cover. See
.
●
Rear upper cover. See Rear upper cover on page 91 .
2.
Remove four screws (callout 1) and remove the sheet-metal shield (callout 2).
NOTE
Only three screws secure the sheet-metal shield, but removing the fourth screw is necessary for tasks later in this procedure.
2
1
Figure 5-71
Remove the laser/scanner assembly (1 of 6)
Internal assemblies 125
3.
Disconnect all of the wire-harness connectors and flat flexible cables (FFCs) on the DC controller PCA (eight wire-harness connectors and eight FFCs).
CAUTION
Do not bend or fold the FFCs during removal or installation.
NOTE
Remove the wire-harnesses from all of the retainers near the DC controller.
Figure 5-72
Remove the laser/scanner assembly (2 of 6)
4.
Remove 10 screws (callout 3). Push up on the sheet-metal shield to release it from the printer chassis, and remove it.
3
Figure 5-73
Remove the laser/scanner assembly (3 of 6)
126 Chapter 5 Removal and replacement ENWW
5.
Remove the laser/scanner wire-harness from the guide (callout 4) and the retainer (callout 5).
4
Figure 5-74
Remove the laser/scanner assembly (4 of 6)
6.
Disconnect two FFCs (callout 6), and then remove five screws (callout 7). Remove the laser/ scanner.
CAUTION
Do not bend or fold the FFCs during removal or installation.
7
6
ENWW
Figure 5-75
Remove the laser/scanner assembly (5 of 6)
Hint
When you reinstall the laser/scanner, the longest FFC connects to the bottom connector, and the short FFC connects to the top connector on the laser/scanner.
Internal assemblies 127
7.
Disconnect two wire-harnesses (callout 8).
CAUTION
To prevent ESD damage, do not touch the laser/scanner PCAs (callout 9) or the laser/scanner lenses (callout 10).
8
10
9
Figure 5-76
Remove the laser/scanner assembly (6 of 6)
128 Chapter 5 Removal and replacement ENWW
ENWW
Main fan
1.
Remove the following components:
●
Fuser. See
.
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Rear lower cover. See
.
●
Left cover. See Left cover on page 84 .
●
Rear upper cover. See Rear upper cover on page 91 .
●
High-voltage power supply. See
High-voltage power supply on page 137
.
2.
Disconnect one connector (callout 1; J1008) on the DC controller.
1
Figure 5-77
Remove the main fan (1 of 2)
Internal assemblies 129
3.
Remove one screw (callout 2) to release the fan.
2
Figure 5-78
Remove the main fan (2 of 2)
130 Chapter 5 Removal and replacement ENWW
Printed circuit assemblies (PCAs)
NOTE
For information about removing the 500-sheet feeder PCA, see
500-sheet feeder driver PCA on page 163 in the 500-sheet feeder section of this chapter.
Low-voltage power-supply PCA
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Remove the following components:
●
Fuser. See
.
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Rear lower cover. See
.
●
Left cover. See Left cover on page 84 .
●
Right cover. See
.
●
Rear upper cover. See Rear upper cover on page 91 .
ENWW Printed circuit assemblies (PCAs) 131
2.
Disconnect four wire-harness (callout 1; J1004, J1005, J1002 and J1006) on the DC controller
PCA and remove the wire-harnesses from the retainer.
1
Figure 5-79
Remove the low-voltage power-supply PCA (1 of 6)
3.
Remove four screws (callout 2), and then remove the sheet-metal shield (callout 3).
NOTE
It might not appear that you need to remove the screw securing the high-voltage power supply to the chassis, but it must be removed to feed the low-voltage power supply wire-harnesses out of the printer later in this procedure.
3
2
Figure 5-80
Remove the low-voltage power-supply PCA (2 of 6)
132 Chapter 5 Removal and replacement ENWW
4.
Remove one screw (callout 4).
4
Figure 5-81
Remove the low-voltage power-supply PCA (3 of 6)
5.
Disconnect one connector (callout 5), and remove five screws (callout 6).
NOTE
Two of the screws have washers attached to them. Make sure that these screws are reinstalled in the same place that they are removed from.
ENWW
6
Figure 5-82
Remove the low-voltage power-supply PCA (4 of 6)
Printed circuit assemblies (PCAs) 133
6.
Use needle-nose pliers to gently squeeze the retainer tabs on the PCA standoff, and carefully pull up on the PCA to release it.
Figure 5-83
Remove the low-voltage power-supply PCA (5 of 6)
7.
Lift the low-voltage power-supply PCA off of the printer chassis.
Figure 5-84
Remove the low-voltage power-supply PCA (6 of 6)
134 Chapter 5 Removal and replacement ENWW
DC controller PCA
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Remove the following components:
●
Formatter cage. See Formatter cage on page 92 .
●
Fuser. See
.
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Rear lower cover. See
.
●
Left cover. See Left cover on page 84 .
●
Rear upper cover. See Rear upper cover on page 91 .
2.
Disconnect all of the wire-harness connectors and FFCs on the DC controller PCA (eight wireharness connectors and eight FFCs).
CAUTION
Do not bend or fold the FFCs during removal or installation.
ENWW
Figure 5-85
Remove the DC controller PCA (1 of 3)
Printed circuit assemblies (PCAs) 135
3.
Release four locking tabs (callout 1), and then remove the engine-test print switch (callout 2).
1
2
Figure 5-86
Remove the DC controller PCA (2 of 3)
4.
Remove four screws (callout 3) to release the DC controller PCA.
3
Figure 5-87
Remove the DC controller PCA (3 of 3)
136 Chapter 5 Removal and replacement ENWW
High-voltage power supply
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Remove the following components:
●
Fuser. See
.
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Rear lower cover. See
.
●
Left cover. See Left cover on page 84 .
●
Rear upper cover. See Rear upper cover on page 91 .
2.
Disconnect two FFCs (callout 1, J1009, and J1019) on the DC controller.
CAUTION
Do not bend or fold the FFCs during removal or installation.
1
ENWW
Figure 5-88
Remove the high-voltage power supply (1 of 3)
Printed circuit assemblies (PCAs) 137
3.
Remove four screws (callout 2), and then disconnect two connectors (callout 3).
2
3
Figure 5-89
Remove the high-voltage power supply (2 of 3)
4.
Release seven locking tabs (callout 4), and then remove the high-voltage power supply.
4
Figure 5-90
Remove the high-voltage power supply (3 of 3)
138 Chapter 5 Removal and replacement ENWW
Memory-controller PCA
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Remove the following components:
●
Fuser. See
.
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Rear lower cover. See
.
●
Left cover. See Left cover on page 84 .
●
Right cover. See
.
●
Rear upper cover. See Rear upper cover on page 91 .
2.
Remove one FFC (callout 1) from the cable guide (callout 2).
CAUTION
Do not bend or fold the FFCs during removal or installation.
ENWW
1
2
Figure 5-91
Remove the memory-controller PCA (1 of 2)
Printed circuit assemblies (PCAs) 139
3.
Disconnect four connectors (callout 3), and then remove three screws (callout 4) to release the memory-controller PCA.
3
4
Figure 5-92
Remove the memory-controller PCA (2 of 2)
140 Chapter 5 Removal and replacement ENWW
Driver PCA
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Remove the following components:
●
Fuser. See
.
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Right cover. See
.
2.
Disconnect all of the connectors and FFCs on the driver PCA.
CAUTION
Do not bend or fold the FFCs during removal or installation.
ENWW
Figure 5-93
Remove the driver PCA (1 of 2)
Printed circuit assemblies (PCAs) 141
3.
Remove two screws (callout 1) to release the driver PCA.
1
Figure 5-94
Remove the driver PCA (2 of 2)
142 Chapter 5 Removal and replacement ENWW
ENWW
Control panel
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Remove the following components:
●
Fuser. See
.
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Left cover. See Left cover on page 84 .
2.
Release the guide locking tab (callout 1) and disconnect one connector (callout 2).
2
1
Figure 5-95
Remove the control panel (1 of 2)
Printed circuit assemblies (PCAs) 143
3.
Remove two screws (callout 3) to release the control panel.
3
Figure 5-96
Remove the control panel (2 of 2)
144 Chapter 5 Removal and replacement ENWW
ENWW
Pickup-and-feed driver PCA
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Open the front cover.
2.
Release the locking tab (callout 1) on the pickup-and-feed driver PCA cover (callout 2), and then remove the cover.
CAUTION
Do not damage or bend the print-cartridge high-voltage springs (callout 3) when you remove the cover.
3
2
1
Figure 5-97
Remove the pickup-and-feed driver PCA (1 of 3)
Printed circuit assemblies (PCAs) 145
3.
Disconnect one FFC (callout 4; J014) on the DC controller.
4
Figure 5-98
Remove the pickup-and-feed driver PCA (2 of 3)
4.
Disconnect six connectors (callout 4), and remove one screw (callout 5) to release the pickupand-feed driver PCA.
NOTE
The HP Color LaserJet 3000 will not have the two white media-sensor connectors.
4
Figure 5-99
Remove the pickup-and-feed driver PCA (3 of 3)
146 Chapter 5 Removal and replacement ENWW
ENWW
Duplex-driver PCA
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Remove the following components:
●
Fuser. See
.
●
Remove the upper cover. See
Upper cover (fuser door) on page 80
.
2.
Disconnect six connectors (callout 1).
1
Figure 5-100
Remove the duplex-driver PCA (1 of 3)
Printed circuit assemblies (PCAs) 147
3.
Remove one screw (callout 2).
2
Figure 5-101
Remove the duplex-driver PCA (2 of 3)
4.
Lift the duplex-driver PCA out of the upper cover.
Figure 5-102
Remove the duplex-driver PCA (3 of 3)
148 Chapter 5 Removal and replacement ENWW
Sensors
NOTE
For information about removing the 500-sheet media sensor, see
Media sensor (500sheet feeder) on page 165 in this chapter.
Cassette media sensor (HP LaserJet 3600/3800)
NOTE
Always perform a full calibration procedure when you replace the cassette media sensor.
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Open the front cover and remove the ETB. See
Electrostatic transfer belt (ETB) on page 94 .
2.
Release the locking tab (callout 1) on the pickup-and-feed driver PCA cover (callout 2), and then remove the cover.
CAUTION
Do not damage or bend the print-cartridge high-voltage springs (callout 3) when you remove the cover.
3
2
1
Figure 5-103
Remove the cassette media sensor (1 of 2)
ENWW Sensors 149
3.
Disconnect one connector (callout 4) and remove one screw (callout 5). Lift the cassette media sensor (callout 6) out of the printer.
4
6
Figure 5-104
Remove the cassette media sensor (2 of 2)
150 Chapter 5 Removal and replacement ENWW
ENWW
Temperature sensor
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Remove the following components:
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Rear lower cover. See
.
●
Left cover. See Left cover on page 84 .
●
Right cover. See
.
●
Rear upper cover. See Rear upper cover on page 91 .
2.
Disconnect one connector (callout 1; J1018) and release the locking tab (callout 2). Remove the temperature sensor (callout 3).
1
3
2
Figure 5-105
Remove the temperature sensor
Sensors 151
Paper and registration sensor covers
1.
Open the front cover and remove the ETB. See
Electrostatic transfer belt (ETB) on page 94 .
2.
Remove two screws (callout 1) and the paper and registration sensor covers (callout 2).
CAUTION
Do not bend the locator tabs on the covers.
1
2
Figure 5-106
Remove the paper and registration sensor covers
152 Chapter 5 Removal and replacement ENWW
ENWW
Cartridge-sensor PCA
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Remove the following components:
●
Upper cover. See
Upper cover (fuser door) on page 80
.
●
Rear lower cover. See
.
●
Left cover. See Left cover on page 84 .
●
Right cover. See
.
●
Rear upper cover. See Rear upper cover on page 91 .
2.
Remove four screws (callout 1) and remove the sheet-metal shield (callout 2).
2
1
Figure 5-107
Remove the cartridge-sensor PCA (1 of 4)
Sensors 153
3.
Disconnect all of the wire-harness connectors and flat flexible cables (FFCs) on the DC controller PCA (eight wire-harness connectors and eight FFCs).
CAUTION
Do not bend or fold the FFCs during removal or installation.
NOTE
Remove the wire-harnesses from all of the retainers near the DC controller.
Figure 5-108
Remove the cartridge-sensor PCA (2 of 4)
4.
Remove 10 screws (callout 3). Push up on the sheet-metal shield to release it from the printer chassis, and remove it.
3
Figure 5-109
Remove the cartridge-sensor PCA (3 of 4)
154 Chapter 5 Removal and replacement ENWW
ENWW
5.
Disconnect four connectors (callout 4) and remove three screws (callout 5). Remove the cartridge-sensor PCA from the printer.
4
Figure 5-110
Remove the cartridge-sensor PCA (4 of 4)
Sensors 155
500-sheet feeder
500-sheet feeder right cover
1.
Remove one screw (callout 1).
1
Figure 5-111
Remove the 500-sheet feeder right cover (1 of 3)
Hint
Before proceeding, look at the following figure and note the location of the locking tabs on the right cover.
156 Chapter 5 Removal and replacement ENWW
2.
Carefully pry loose the two locking tabs along the top of the cover.
Figure 5-112
Remove the 500-sheet feeder right cover (2 of 3)
3.
Rotate the top of the cover away from the feeder to release three locking tabs along the bottom of the cover.
ENWW
Figure 5-113
Remove the 500-sheet feeder right cover (3 of 3)
500-sheet feeder 157
500-sheet feeder left cover
1.
Remove one screw (callout 1).
1
Figure 5-114
Remove the 500-sheet feeder left cover (1 of 5)
Hint
Before proceeding, look at the following figure and note the location of the locking tabs on the left cover.
158 Chapter 5 Removal and replacement ENWW
2.
Carefully pry loose the three locking tabs along the top of the cover.
Figure 5-115
Remove the 500-sheet feeder left cover (2 of 5)
3.
Use a flatblade screwdriver to release the locking tab at the front of the cover.
ENWW
Figure 5-116
Remove the 500-sheet feeder left cover (3 of 5)
500-sheet feeder 159
4.
Use a flatblade screwdriver to release the locking tab at the rear of the cover.
Figure 5-117
Remove the 500-sheet feeder left cover (4 of 5)
5.
Rotate the top of the cover away from the feeder to release two locking tabs along the bottom of the cover.
Figure 5-118
Remove the 500-sheet feeder left cover (5 of 5)
160 Chapter 5 Removal and replacement ENWW
ENWW
500-sheet feeder rear cover
1.
Remove the following components:
●
500-sheet feeder right cover. See
500-sheet feeder right cover on page 156 .
●
500-sheet feeder left cover. See
500-sheet feeder left cover on page 158
.
2.
Release the two locking tabs along the side of the cover.
Figure 5-119
Remove the 500-sheet feeder rear cover (1 of 3)
Hint
Before proceeding, look at the following figure and note the location of the locking tabs on the rear cover.
500-sheet feeder 161
3.
Carefully pry loose the three locking tabs along the top of the cover.
Figure 5-120
Remove the 500-sheet feeder rear cover (2 of 3)
4.
Rotate the cover up and away from the feeder chassis to remove it.
Figure 5-121
Remove the 500-sheet feeder rear cover (3 of 3)
162 Chapter 5 Removal and replacement ENWW
ENWW
500-sheet feeder driver PCA
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Remove the 500-sheet feeder right cover. See
500-sheet feeder right cover on page 156
.
2.
Disconnect four connectors (callout 1)
1
Figure 5-122
Remove the 500-sheet-feeder driver PCA (1 of 2)
500-sheet feeder 163
3.
Release the 500-sheet-feeder PCA by removing two screws (callout 2).
2
Figure 5-123
Remove the 500-sheet-feeder driver PCA (2 of 2)
164 Chapter 5 Removal and replacement ENWW
ENWW
Media sensor (500-sheet feeder)
CAUTION
PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat 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 printer.
1.
Remove the 500-sheet feeder right cover. See
500-sheet feeder right cover on page 156
.
2.
Disconnect one connector (callout 1; J4003).
1
Figure 5-124
Remove the media sensor (500-sheet feeder) (1 of 4)
500-sheet feeder 165
3.
Use a small flatblade screwdriver to release the top cover on the 500–sheet feeder pickup-andfeed assembly, and then remove the cover.
CAUTION
Be careful not to lose the grounding springs that are under this cover.
Figure 5-125
Remove the media sensor (500-sheet feeder) (2 of 4)
4.
Remove the media sensor torsion spring (callout 2).
2
Figure 5-126
Remove the media sensor (500-sheet feeder) (3 of 4)
166 Chapter 5 Removal and replacement ENWW
5.
Raise the media sensor, and then slide it off of the hinges to remove it.
Figure 5-127
Remove the media sensor (500-sheet feeder) (4 of 4)
ENWW 500-sheet feeder 167
168 Chapter 5 Removal and replacement ENWW
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