Compaq Deskpro 4000N - Desktop PC, Maintenance & Service Manual

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Compaq Deskpro 4000S and 4000N Personal Computers 5-17
5.12 System Board
To remove the system board, complete the following steps:
1. Prepare the computer for disassembly (Section 5.4).
2. Remove the system unit cover (Section 5.7).
3. Remove the expansion board cage (Section 5.9).
✎
The power cord must be removed from the computer before the power supply can be rotated to
an upright position.
4. Rotate the drive cage to an upright position.
CAUTION: Check the position of all cables and wires before raising or lowering the drive cage to prevent
cable damage.
5. Disconnect all cables from the system board.
6. Rotate the power supply to an upright position.