R
EPLACING
PARTS
53
Motherboard
If you are removing the motherboard in order to replace it with a new motherboard, review
the troubleshooting and motherboard cautions on
.
The CPU mounted on the motherboard controls the image data transferred to and from the
printer interface. The motherboard also controls hard disk drive functions and the
communication between the E-42 and external devices.
Removing the motherboard
The motherboard attaches to the side of the chassis, below the power supply. Before you
remove the motherboard, you must remove the following:
• The left panel
• All boards installed on the motherboard
• All cables connected to the motherboard
(including the motherboard power cable, CPU power cable, front panel fan cable, hard
disk drive data cable, DVD drive power and data combination cable, power button cable,
reset button cable, speaker cable, front panel USB port cables, and UIB cable)
This section also includes information about the following:
• Replacing or adding DIMMs
• Replacing the CPU
• Replacing the battery
• Clearing the CMOS
• Jumper configurations
Follow standard ESD and other safety precautions when handling components (see
).
During service to 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 short-circuit and permanently damage the motherboard.