Power Button Board - HP ProBook 640 G1 Maintenance And Service Manual

2. Lift up on the left side to disconnect the connector interface (2).
3. Detach the USB board cable from the base enclosure (3), and remove the USB board and cable.
Reverse this procedure to install the USB board.

Power button board

Description
Power button board (includes cable)
For 15.6-in. models
For 14-in. models
Before removing the power button 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
a. Service cover (see
b. Hard drive (see
c. Optical drive (see
d. Keyboard (see
e. Base enclosure (see
86 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
Battery on page 56), and then remove the following components:
Service cover on page
Hard drive on page 58)
Optical drive on page 69)
Keyboard on page 72)
Base enclosure on page
57)
82)
Spare part number
738701-001
738399-001