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9. Swing the right end of the battery release latch arm (2) clockwise until the left end of the arm
release from the openings in the base enclosure.
10. Remove the battery release latch arm.
Reverse this procedure to install the battery release latch assembly.
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 67), and then remove the following components:
a. Service cover (see
Service cover on page 69)
b. Smart Card reader (see
Smart Card reader on page 70)
c. Optical drive (see
Optical drive on page 71)
d. Hard drive (see
Hard drive on page 75)
e. Modem module (see
Modem module on page 84)
f. Keyboard (see
Keyboard on page 86)
g. Base enclosure (see
Base enclosure on page 91)
102 Chapter 4 Removal and replacement procedures