4-58 Disassembly and Reassembly
System Board
To remove the system board all the processor(s), DIMMs, and PCI option
boards (if installed) on the board must be removed and all system board cable
connectors tagged and unplugged.
!
CAUTION
The system board can be extremely sensitive to ESD and
always requires careful handling. After removing it f rom the
system, place it component-side up on a nonconductive,
static-free surface to prevent shorting out the battery leads.
Do not slide the system board over any surface.
To remove the system board, perform the following procedures:
1. Observe the safety and ESD precautions listed under General Information
and Static Precautions at the beginning of this chapter.
2. Open the front bezel of your system.
3. Shutdown the operating system (OS).
4. Press the power on/off switch on the front panel of the server (see
Front View in Chapter 1). The power-on LED goes out.
5. Power off the peripheral devices.
6. Unplug the system power cord(s) from the AC wall outlet(s).
Note: If the system power cord is connected to a power
control unit such as an UPS (Uninterruptible Power Supp ly),
refer to the UPS user's guide for proper power-off
procedures.
7. Remove the left-hand side access panel of the system chassis following
procedures previously described in this chapter.
!
CAUTION
For proper cooling and airflow, do not operate the system
with the side access panel removed. Always replace the
panel before powering on the system.
8. Remove the processor air duct. See Processor Air Duct Removal earlier in
this chapter.
9. Remove the rear cooling fan following procedures described in the previous
section.
10. Perform the processor(s) and DIMM(s) removal procedures described earlier
in the section Modifying the System Board. Save the processor(s) and
DIMM(s) for reassembly.