HP ProBook 6455b, 6555b, 6450b and 6550b Notebook PCs Maintenance and Service Guide

Description Spare part number
For use only on computer models equipped with an Intel QM57 graphics subsystem with UMA
memory and WWAN capability in all countries and regions except Russia and the People's
Republic of China
613295-001
For use only on computer models equipped with an Intel HM57 graphics subsystem with UMA
memory in Russia and the People's Republic of China
613299-001
For use only on computer models equipped with an Intel HM57 graphics subsystem with UMA
memory and WWAN capability in Russia and the People's Republic of China
613300-001
For use only on computer models equipped with an Intel QM57 graphics subsystem with UMA
memory and WWAN capability in Russia and the People's Republic of China
613301-001
For use only on computer models equipped with an Intel HM57 graphics subsystem with UMA
memory in the People's Republic of China
613304-001
For use only on computer models equipped with an Intel HM57 graphics subsystem with UMA
memory and WWAN capability in the People's Republic of China
6133305-001
For use only on computer models equipped with an Intel QM57 graphics subsystem with UMA
memory and WWAN capability in the People's Republic of China
613306-001
Before removing the system 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 74).
5. Remove the following components:
a. Bluetooth module (see
Bluetooth module on page 76)
b. Mass storage device (see
Mass storage device on page 78)
c. Optical drive (see
Optical drive on page 88)
d. Keyboard (see
Keyboard on page 90)
e. Switch cover (see
Switch cover on page 97)
f. Fan (see
Fan on page 102)
g. Heat sink (see
Heat sink on page 104)
h. Palm rest (see
Palm rest on page 100)
i. Display assembly (see
Display assembly on page 108)
j. Top cover (see
Top cover on page 120)
k. ExpressCard assembly (see
ExpressCard assembly on page 125)
Component replacement procedures 135