Printed circuit assemblies (PCAs)
NOTE: For information about removing the 500-sheet feeder PCA, see
500-sheet feeder driver PCA on page 166 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
Fuser on page 97 .
● Upper cover. See
Upper cover (fuser door) on page 82
.
● Rear lower cover. See
Rear lower cover on page 85 .
● Left cover. See
Left cover on page 86 .
● Right cover. See
Right cover on page 89 .
●
Rear upper cover. See Rear upper cover on page 93 .
134 Chapter 5 Removal and replacement ENWW
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
ENWW
2
Figure 5-80 Remove the low-voltage power-supply PCA (2 of 6)
Printed circuit assemblies (PCAs) 135
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.
6
Figure 5-82 Remove the low-voltage power-supply PCA (4 of 6)
136 Chapter 5 Removal and replacement ENWW
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.
ENWW
Figure 5-84 Remove the low-voltage power-supply PCA (6 of 6)
Printed circuit assemblies (PCAs) 137
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 94 .
● Fuser. See
Fuser on page 97 .
● Upper cover. See
Upper cover (fuser door) on page 82
.
● Rear lower cover. See
Rear lower cover on page 85 .
● Left cover. See
Left cover on page 86 .
●
Rear upper cover. See Rear upper cover on page 93 .
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.
Figure 5-85 Remove the DC controller PCA (1 of 3)
138 Chapter 5 Removal and replacement ENWW
ENWW
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)
Printed circuit assemblies (PCAs) 139
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
Fuser on page 97 .
● Upper cover. See
Upper cover (fuser door) on page 82
.
● Rear lower cover. See
Rear lower cover on page 85 .
● Left cover. See
Left cover on page 86 .
●
Rear upper cover. See Rear upper cover on page 93 .
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
Figure 5-88 Remove the high-voltage power supply (1 of 3)
140 Chapter 5 Removal and replacement ENWW
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
ENWW
Figure 5-90 Remove the high-voltage power supply (3 of 3)
Printed circuit assemblies (PCAs) 141
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
Fuser on page 97 .
● Upper cover. See
Upper cover (fuser door) on page 82
.
● Rear lower cover. See
Rear lower cover on page 85 .
● Left cover. See
Left cover on page 86 .
● Right cover. See
Right cover on page 89 .
●
Rear upper cover. See Rear upper cover on page 93 .
2.
Remove one FFC (callout 1) from the cable guide (callout 2).
CAUTION: Do not bend or fold the FFCs during removal or installation.
1
2
Figure 5-91 Remove the memory-controller PCA (1 of 2)
142 Chapter 5 Removal and replacement ENWW
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)
ENWW Printed circuit assemblies (PCAs) 143
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
Fuser on page 97 .
● Upper cover. See
Upper cover (fuser door) on page 82
.
● Right cover. See
Right cover on page 89 .
2.
Disconnect all of the connectors and FFCs on the driver PCA.
CAUTION: Do not bend or fold the FFCs during removal or installation.
Figure 5-93 Remove the driver PCA (1 of 2)
144 Chapter 5 Removal and replacement ENWW
3.
Remove two screws (callout 1) to release the driver PCA.
1
Figure 5-94 Remove the driver PCA (2 of 2)
ENWW Printed circuit assemblies (PCAs) 145
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
Fuser on page 97 .
● Upper cover. See
Upper cover (fuser door) on page 82
.
● Left cover. See
Left cover on page 86 .
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)
146 Chapter 5 Removal and replacement ENWW
3.
Remove two screws (callout 3) to release the control panel.
3
Figure 5-96 Remove the control panel (2 of 2)
ENWW Printed circuit assemblies (PCAs) 147
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)
148 Chapter 5 Removal and replacement ENWW
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
ENWW
Figure 5-99 Remove the pickup-and-feed driver PCA (3 of 3)
Printed circuit assemblies (PCAs) 149
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
Fuser on page 97 .
● Remove the upper cover. See
Upper cover (fuser door) on page 82
.
2.
Disconnect six connectors (callout 1).
1
Figure 5-100 Remove the duplex-driver PCA (1 of 3)
150 Chapter 5 Removal and replacement ENWW
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.
ENWW
Figure 5-102 Remove the duplex-driver PCA (3 of 3)
Printed circuit assemblies (PCAs) 151
