HP ProBook 4545s Notebook PC Maintenance and Service Guide

c. Keyboard (see Keyboard on page 47).
d. Metal heat shield (see
Metal heat shield on page 51).
e. Top cover (see
Top cover on page 58).
Remove the power button board/function board:
1. Position the top cover upside-down with the front toward you.
2. Remove one Phillips PM2.0×4.0 screw (1) on both the power button board and the function
board to the top cover.
3. Lift the power button board (2) and the function board (3) from the top cover
Reverse this procedure to install the power button board/function board.
Fingerprint board
Description Spare part number
Fingerprint board. Includes cable, mounting bracket, and retaining screw. 683485-001
Before removing the fingerprint 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.
Component replacement procedures 67