S
ERVICE
P
ROCEDURES
61
Motherboard
If you are removing the motherboard in order to replace it with a new motherboard, review
the troubleshooting and motherboard cautions on
.
The Intel Core 2 Duo E8400 3.0GHz CPU mounted on the motherboard controls the image
data transferred to and from the video board. The motherboard also controls HDD functions
and the communication between the E-41 and external devices. The motherboard has four
DIMM sockets. Two sockets contain a 1GB DIMM, for a total of 2GB of memory (see
). The motherboard also includes the following PCI expansion slots
(from top to bottom):
• One PCI-E x16 slots with x8 signal occupied by the video board
• One PCI-E x8 slots with x4 signal (not used)
• One PCI-E x16 slots with x4 signal (not used)
• Two PCI-X 133/100/66MHz (not used)
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, HDD
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 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.
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