Compaq 154883-002 Deskpro EN Series of Personal Computers - Slim Desktop Model - Page 61

System Board, Remove the six screws connecting the system board to the chassis.

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4.16 System Board ✎ More information on the system board, including troubleshooting criteria, can be found in the Compaq Quick Troubleshooting Guide (part number 153837-001) and the Compaq Service Reference Guide (part number 152611-001). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit before beginning disassembly procedures. 1. Prepare the computer for disassembly (Section 4.2). 2. Remove the access panel (Section 4.6). 3. Rotate the drive cage to the upright position (Section 4.14). 4. Remove all expansion boards (Section 4.11). 5. Remove all graphics cards (Section 4.12). 6. Disconnect all cables connected to the system board, noting their location for reinstallation. 7. Remove the six screws connecting the system board to the chassis. 8. Slide the system board toward the front of the chassis until the external connectors are clear of the I/O panel. 9. Lift the system board out of the computer. To install a system board, reverse the removal procedure. ✎ When installing a system board, push the board toward the back of the computer, guiding the system board I/O through the holes in the I/O panel. At the same time, align the screw holes in the system board with the screw holes in the base pan. 4-28 Removal & Replacement Procedures

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4-28
Removal & Replacement Procedures
4.16
System Board
More information on the system board, including troubleshooting criteria, can be
found in the Compaq Quick Troubleshooting Guide (part number 153837-001) and
the Compaq Service Reference Guide (part number 152611-001).
WARNING:
Power is continuous to the system board and power supply even when the power
switch is turned off. To prevent damage to the unit, disconnect the power cord from the power
source or the unit before beginning disassembly procedures.
1.
Prepare the computer for disassembly (Section 4.2).
2.
Remove the access panel (Section 4.6).
3.
Rotate the drive cage to the upright position (Section 4.14).
4.
Remove all expansion boards (Section 4.11).
5.
Remove all graphics cards (Section 4.12).
6.
Disconnect all cables connected to the system board, noting their location for
reinstallation.
7.
Remove the six screws connecting the system board to the chassis.
8.
Slide the system board toward the front of the chassis until the external connectors are
clear of the I/O panel.
9.
Lift the system board out of the computer.
To install a system board, reverse the removal procedure.
When installing a system board, push the board toward the back of the computer,
guiding the system board I/O through the holes in the I/O panel. At the same time,
align the screw holes in the system board with the screw holes in the base pan.