Canon imagePRESS P400 Service Manual page 33

Jumper
J60
J60
Pin 1
■ Removing the motherboard
Before you remove the motherboard, you must remove:
• Chassis cover
• All boards installed on the motherboard
• All cables connected from other components to the motherboard (these include both motherboard power cables, chassis fan
cable, HDD data cable, 10-pin power button cables, and Service switchboard cable)
IMPORTANT:
Follow standard ESD precautions while handling the motherboard and all components. For details, see
page 3.
During servicing the motherboard, avoid using excessive force and always place the motherboard on a grounded, non-
metallic, static-free surface.
Never allow any metal to touch the solder contacts on the underside of the motherboard, especially beneath the battery
socket. Improper handling can shortcircuit and permanently damage the motherboard.
● To remove motherboard components from the motherboard
1. Access and open the imagePRESS Server, as described in
2. Remove the printer interface board from the motherboard (see
3. Remove the following cables attached to the motherboard:
• Chassis fan cable
• Storage device cables
• SATA data cable
• Power supply cable
• 4-pin power cable
• Service switchboard cable
• 10-pin power button cable
For the location of each connector on the motherboard, see
● Remove the motherboard
IMPORTANT:
Follow standard ESD and other safety precautions when handling the motherboard. Do not touch the contacts and avoid
using excessive force. Place the motherboard on a grounded, antistatic surface.
NOTE:
This procedure assumes that you have removed the printer interface board and cables from the motherboard, as described in
remove motherboard components from the motherboard" on page
1. Remove all the mounting screws securing the motherboard to the chassis (for screw locations, see
parts and connectors" on page
To minimize tension on the motherboard, loosen all the screws partially before removing any one screw completely.
J60 is the Clear CMOS and Password jumper. Default configuration: jumper cap installed on pins 1
and 2.
NOTE:
Because the jumper cap is very small, it is not necessary-and could introduce an error-to re-
move the jumper cap in order to clear the CMOS settings.
Instead, clear the CMOS by denying power to the motherboard, as described.
26).
Content
"Accessing the imagePRESS Server" on page
"Remove the printer interface board" on page
"Motherboard parts and connectors" on page
27.
27
3. REPLACING PARTS
"Precautions" on
18.
21).
26.
"To
"Motherboard