Fingerprint reader board
Description Spare part number
Fingerprint reader board (includes cable) 684343-001
Before removing the fingerprint reader board, follow these steps:
1. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4.
Remove the battery (see 
Battery on page 57), and then remove the following components:
a. Service cover (see 
Service cover on page 59)
b. Smart Card reader (see 
Smart Card reader on page 60)
c. Optical drive (see 
Optical drive on page 61)
d. Hard drive (see 
Hard drive on page 65)
e. Modem module (see 
Modem module on page 74)
f. Keyboard (see 
Keyboard on page 76)
g. Base enclosure (see 
Base enclosure on page 80)
Remove the fingerprint reader board:
1.
Position the computer with the front toward you.
2. Disconnect the fingerprint reader board cable (1) from the LIF connector on the system board.
92 Chapter 4   Removal and replacement procedures