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 41)

●

WLAN module (see

WLAN module on page 44)

●

RTC battery (see

RTC battery on page 48)

●

Power connector and cable (see

Power connector and cable on page 64)

●

Fan (see

Fan on page 65)

●

Heat sink (see

Heat sink on page 66)

Remove the system board:

1. Disconnect the Bluetooth module cable (1) from the system board.

2. Release the ZIF connector to which the power switch board cable is connected, and disconnect the

power switch board cable (2) from the system board.

Remove the four Phillips PM2.5×4.0 screws (1) that secure the system board to the base

enclosure.

4. Remove the two Phillips PM2.5×4.0 screws (2) that secure the power connector to the base

enclosure.

Component replacement procedures