HP ProBook 4525s Notebook PC - Maintenance and Service Guide

When replacing the system board, be sure that the following components are removed from the
defective system board and installed on the replacement system board:
●
Memory module (see
Memory module on page 53)
●
WLAN module (see
WLAN module on page 60)
●
WWAN module (see
WWAN module on page 61)
●
Modem module (see
Modem module on page 87)
●
Processor (see
Processor on page 67)
●
Audio board (see
Audio board on page 89)
Remove the system board:
1. Position the computer right-side up with the front toward you.
2. Remove the M2.0x3.0 screw on the left of the system board (1).
3. Remove the M2.0x2.5 screw (2) that secures the optical drive extender to the base enclosure.
4. Lift the board at an angle (3) and remove the optical drive extender (4).
5. Slide the board partially out of the base pan (5).
92 Chapter 4 Removal and replacement procedures