Compaq 325 and 326 Notebook PCs HP 425 and 625 Notebook PCs - Maintenance and Service Guide

6. Rotate the top cover up (1) and off the base enclosure (2).
Reverse this procedure to install the top cover.
Power switch board
The spare part number for the power switch board used in all models is 605794-001.
Before removing the power switch board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 48).
5. Remove the service door (see
Service door on page 49).
6. Remove the keyboard (see
Keyboard on page 67).
76 Chapter 4 Removal and replacement procedures