Specifications

Maintenance & Service Guide 4–39
Removal & Replacement Procedures
4.20 System Board
The system board has nine LEDs to help troubleshoot component-related problems. See
Section 5.1.2 for more information.
1. Prepare the workstation for disassembly (Section 4.2), then place it on its side.
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CAUTION: Before removing the access panel, ensure that the workstation is turned off,
and all cables are disconnected from the back of the workstation.
2. Remove the access panel (Section 4.5).
3. Remove the memory expansion board (Section 4.9.2).
4. Remove any expansion boards (Section 4.15.1).
5. Remove the main air baffle (Section 4.16.1).
6. Disconnect and remove all cables plugged into the system board.
7. Remove the processor heatsink(s) (Section 4.19.2).
8. Remove the nine screws securing the system board to the chassis 1.
9. Remove the four screws (one under each heatsink bracket) that connect the system board
to the chassis 2.
10. Carefully remove the system board from the chassis 3.
To install a new system board, reverse the above procedure.
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Plug the CD analog audio cable back in before reinstalling the system board.