3. Remove the cable (3), and then remove the ngerprint reader (4).
Reverse this procedure to install the ngerprint reader.
Smart card reader
NOTE: The smart card reader spare part kit includes the metal shield
Description Spare part number
Smart card reader board (includes metal shield) 840694-001
IMPORTANT: Make special note of each screw and screw lock size and location during removal and
replacement
Before removing the smart card reader, follow these steps:
1. Shut down the computer.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
4. Remove the following components:
a. Service door (see Service door on page 37).
b. Remove the battery (see Battery on page 38)
c. Hard drive (see Hard drive on page 39).
d. Solid-state drive (see Solid-state drive (select products only) on page 41).
e. WWAN module (see WWAN module (select products only) on page 42).
74 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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