4–14 Maintenance and Service Guide
Removal and replacement procedures
Expansion memory module
Before removing the expansion memory module, 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).
Remove the expansion memory module:
1. Position the computer with the front toward you.
2. Loosen the Phillips PM2.0×6.0 captive screw 1 that secures the memory module compartment cover to
the computer.
3. Lift the left side of the cover 2 to detach it from the computer.
4. Remove the memory module compartment cover 3. The memory module compartment cover is included in the
Plastics Kit, spare part numbers 583279-001 (for use only with HP Compaq 6545b and 6540b computer
models) and 583954-001 (for use only with HP Compaq 6445b and 6400 computer models).
Description Spare part number
For use only with HP Compaq 6545b and 6445b computer models:
■ 4096-MB (800-MHz, DDR2) 598855-001
■ 2048-MB (800-MHz, DDR2) 598858-001
■ 1024-MB (800-MHz, DDR2) 598861-001
For use only with HP Compaq 6540b and 6440b computer models:
■ 4096-MB (1333-MHz, DDR3) 599092-002
■ 2048-MB (1333-MHz, DDR3) 598856-002
■ 1024-MB (1333-MHz, DDR3) 598859-002
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