A SERVICE OF

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Keyboard (see
Keyboard on page 53)
Top cover (see
Top cover on page 57)
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 50)
Fan and heat sink (see
Fan and heat sink on page 79)
Processor (see
Processor on page 86)
Remove the system board:
1. Disconnect the following cables from the system board:
LED board cable (1)
Speaker cable (2)
Optical drive cable (3)
Display panel cable (4)
2. Remove the Philllips PM2.5×7.0 screw (5) that secures the system board to the base enclosure.
3. Disconnect the power connector cable (1) from the system board.
74 Chapter 4 Removal and replacement procedures