HP DM4 - Manual (Page 61)

Fingerprint reader board
Description Spare part number
Fingerprint reader board 608225-001
Before removing the fingerprint reader board, 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 36 ).
5. Remove the following components:
a. Hard drive (see Hard drive on page 43 )
b. Optical drive (see Optical drive on page 45 )
c. Keyboard (see Keyboard on page 47 )
d. Top cover (see Top cover on page 49 )
Remove the fingerprint reader board:
1. Turn the top cover upside down, with the front toward you.
2. Remove the Phillips M2.0×3.0 screw (1) that secures the fingerprint reader board and bracket to
the top cover.
3. Release the ZIF connector (2) on the fingerprint reader board and disconnect the cable (3) from
the connector.
4. Remove the fingerprint reader board bracket (4) from the top cover.
Component replacement procedures 53