SERVICE PROCEDURES 61
Motherboard
If you are removing the motherboard in order to replace it with a new motherboard, review
the troubleshooting and motherboard cautions on page 65.
The Intel Core 2 Quad Q9550 QUAD-Core, 2.83GHz CPU mounted on the motherboard
controls the image data transferred to and from the copier interface board. The motherboard
also controls HDD functions and the communication between the imagePRESS Server and
external devices. The motherboard has four DIMM sockets. Two sockets contain a 1GB
DIMM and two contain a 512MB DIMM, for a total of 3GB of memory (see Figure 25 on
page 77). The motherboard also includes the following PCI expansion slots (from top to
bottom):
• One PCI-E x16 slots with x8 signal occupied by the copier interface 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 cables, 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 page 14).
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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