HP PROBOOK 4520S Maintenance And Service Manual page 125

12. Remove the hard drive (see
13. Remove the top cover (see
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
●
WLAN module (see
●
WWAN module (see
●
Modem module (see
●
Processor (see Processor on page
●
Audio board (see Audio board on page
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. If this is a 17.3-in computer, remove the single M2.0 x 3.0 screw (2) that secures the optical drive
connector to the base.
NOTE: The 15.6-in computer does not use a separate optical drive connector.
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).
Hard drive on page
Top cover on page
Memory module on page
WLAN module on page
WWAN module on page
Modem module on page
83)
112)
87).
103).
60)
70)
76)
110)
Component replacement procedures 115