Service and Maintain

System Board
Description Spare part number
System board, includes Trusted Platform Module (TPM) 611836-001
System board, does not include Trusted Platform Module (TPM) 649743-001
Front I/O panel 587458-001
CAUTION: Be very careful when removing or replacing the system board to prevent damaging it.
1. Prepare the computer for disassembly (Preparation for Disassembly on page 206).
2. Remove the computer access panel (
Access Panel on page 207).
3. Remove the memory modules (
Memory on page 211).
4. Remove the front fan (
Front Fan on page 215).
5. Remove the optical drive (
Removing the Optical Drive on page 216).
6. Remove the hard drive (
Hard Drive on page 219).
7. Remove the optical drive rail (
Optical Drive Rail on page 223).
8. Remove the heat sink (
Heat sink on page 227).
9. Disconnect the rear fan cable from the system board.
10. Disconnect any remaining cables connected to the system board, noting their location for
reinstallation.
11. Remove the front I/O panel:
a. Remove the screw from the right side of the panel that secures it to the front of the chassis.
Figure 9-29 I/O panel screw
234 Chapter 9 Removal and Replacement Procedures – Ultra-Slim Desktop (USDT) Chassis