HP V3680TU, V3523TU, V3930TU, V3931TU ExpressCard assembly see ExpressCard assembly on page

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 included in the Cable Kit, spare part number 430474-001, and is available separately using spare part number 455847-001.

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:

●ExpressCard assembly (see ExpressCard assembly on page 97)

●Fan/heat sink assembly (see Fan/heat sink assembly on page 100)

●Processor (see Processor on page 103)

Reverse the preceding procedure to install the system board.

ExpressCard assembly

Description	Spare part number
ExpressCard assembly	417112-001

Before removing the ExpressCard assembly, 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 Battery on page 53).

5. Remove the following components:

a. Hard drive (see Hard drive on page 54)

b. Optical drive (see Optical drive on page 64)

c. Keyboard (see Keyboard on page 66)

Component replacement procedures 97