4–74 Maintenance and Service Guide
Removal and replacement procedures
System board
✎
The system board spare part kit includes replacement thermal material.
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 4-7).
5. Remove the following components:
a. Bluetooth module (see “Bluetooth module” on page 4-9)
b. Mass storage device (see “Mass storage device” on page 4-11)
c. Optical drive (see “Optical drive” on page 4-23)
d. Keyboard (see “Keyboard” on page 4-25)
e. Switch cover (see “Switch cover” on page 4-33)
Description Spare part number
For use only with HP Compaq 6545b computer models 583257-001
For use only with HP Compaq 6445b computer models 583261-001
For use only with HP Compaq 6540b computer models equipped with discrete graphics subsystem
memory in all countries and regions except the People’s Republic of China and Russia (includes
64-MB of graphics subsystem memory)
593839-001
For use only with HP Compaq 6545b and 6540b computer models equipped with UMA graphics
subsystem memory in the People’s Republic of China and Russia (includes 64-MB of graphics
subsystem memory; includes replacement thermal material)
603189-001
For use only with HP Compaq 6540b computer models equipped with discrete graphics subsystem
memory in the People’s Republic of China and Russia (includes 64-MB of graphics subsystem
memory)
603190-001
For use only with HP Compaq 6540b computer models equipped with UMA graphics subsystem
memory in all countries and regions except the People’s Republic of China and Russia (includes
64-MB of graphics subsystem memory)
593840-001
For use only with HP Compaq 6540b computer models equipped with UMA graphics subsystem
memory in the People’s Republic of China and Russia (includes 64-MB of graphics subsystem
memory)
603192-001
For use only with HP Compaq 6440b computer models equipped with discrete graphics subsystem
memory in all countries and regions except the People’s Republic of China and Russia (includes
64-MB of graphics subsystem memory)
593841-001
For use only with HP Compaq 6440b computer models equipped with discrete graphics subsystem
memory in the People’s Republic of China and Russia (includes 64-MB of graphics
subsystem memory)
603191-001
For use only with HP Compaq 6440b computer models equipped with UMA graphics subsystem
memory in all countries and regions except the People’s Republic of China and Russia (includes
64-MB of graphics subsystem memory)
593842-001
For use only with HP Compaq 6440b computer models equipped with UMA graphics subsystem
memory in the People’s Republic of China and Russia (includes 64-MB of graphics
subsystem memory)
603193-001
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