HP 250 G4 Service Manual page 68

Description
●
Intel Pentium 3825U processor
●
Intel Celeron N3050 processor
Before removing the system 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
5. Remove the optical drive (see
6. Remove the bottom cover (see
7. Remove the hard drive (see
NOTE: 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:
●
WLAN module (see
●
Memory module (see
To remove the system board:
1. Position the computer upright, and then disconnect the following cables from the system board:
(1): USB board cable
(2): Optical drive connector cable
(3): Keyboard cable
(4): Power connector cable
(5): Display cable
(6): Power button board cable
(7): TouchPad button board cable
(8): Speaker cable
60 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
Battery on page 32).
Optical drive on page
Bottom cover on page
Hard drive on page
WLAN module on page 44)
Memory module on page
33), if installed.
39).
42).
46)
Spare part
number
824453-001,
601
816433-001,
-501, -601