System Board - HP dx2420 - Microtower PC Service & Reference Manual

To install the power supply, reverse the removal procedure.

System Board

1. Prepare the computer for disassembly
2. Remove the computer access panel
3. Remove all expansion boards
4. Disconnect all cables connected to the system board, noting their location for reinstallation.
5. Remove the heat sink
6. Remove the remaining six screws that secure the system board to the chassis.
Figure 6-43
7. Slide the system board toward the front of the computer to disengage the I/O panel from the rear
of the chassis.
8. Lift the system board out of the computer.
When reinstalling the system board, first insert the I/O panel back into the slots in the rear of the chassis,
and then align the board with the chassis screw holes.
NOTE: When replacing the system board, you must change the chassis serial number in the BIOS.
64 Chapter 6 Removal and Replacement Procedures Microtower (MT) Chassis
(Expansion Cards on page
(Heat sink on page
Removing the system board
(Preparation for Disassembly on page
(Computer Access Panel on page
40).
60).
28).
32).