5.Release the system board by sliding it to the right at an angle (3) until the connectors on the left side of the system board clear the base enclosure, and then remove the system board.

6.If it is necessary to replace the modem module cable, remove the RJ-11 connector (1) from the clip built into the base enclosure.

7.Remove the modem module cable (2) from the routing channel built into the base enclosure. The modem module cable is available using spare part number 610791-001.

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:

●Fan/heat sink assembly (see Fan/heat sink assembly on page 87)

●Processor (see Processor on page 90)

Reverse the preceding procedure to install the system board.

82 Chapter 4 Removal and replacement procedures