Canon imagePASS-P1 Service Manual page 29

To replace motherboard components
1. Replace the following cables to the motherboard
• 10-pin power button cable
Connect one end of the 10-pin power button cable to J351 connector on the printer interface board. Connect the other
end to the J15 connector on the motherboard. The cable connector is keyed to fit only one way.
• Service board cable
• 24-pin power cable. The cable connector is keyed to fit only one way.
• 4-pin power cable. The cable connector is keyed to fit only one way.
• HDD data cable
• Chassis fan cable
2. Replace the printer interface board
3. Reassemble the imagePASS
■ CPU and CPU cooling assembly
The CPU is installed in a socket on the motherboard. Before removing the CPU from its socket, remove the motherboard from
the chassis (see"Motherboard jumpers" on page
assembly from the CPU socket (see below Figure).The CPU cooling assembly consists of a fan and a heatsink.
NOTE:
Do not remove the CPU fan from the heatsink.
No.
1 CPU fan
2 Heatsink
(see"Checking imagePASS internal connections" on page
(see"Printer interface board" on page
(see"Restoring imagePASS functionality after service" on page
19), disconnect the CPU fan cable from the motherboard, and remove the cooling
1
2
3
4
5
6
Figure 16: CPU cooling assembly
Item
16).
No
.
4 Socket lever
5 CPU socket on motherboard
24
3. REPLACING PARTS
14):
34).
Item