6 Removal and replacement procedures for
authorized service provider parts
CAUTION: Components described in this chapter should be accessed only by an authorized service provider.
Accessing these parts can damage the computer or void the warranty.
Component replacement procedures
NOTE: Details about your computer, including model, serial number, product key, and length of warranty,
are on the service tag at the bottom of your computer. See Labels on page 18 for details.
NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then
follow the on-screen instructions.
There may be as many as 85 screws that must be removed, replaced, and/or loosened when servicing the
parts described in this chapter. Make special note of each screw size and location during removal
and replacement.
Base enclosure
Description Spare part number
Base enclosure (for products with no optical drive installed) 931555-001
Base enclosure (for products with optical drive installed) 931556-001
Before removing the base enclosure, follow these steps:
1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
3. Disconnect all external devices connected to the computer.
4. Position the computer upside down on a at surface.
Remove the base enclosure:
1. Loosen but do not remove the two screws from the bottom cover (1). Remove the remaining eight
Phillips screws (2) from the bottom cover.
Component replacement procedures 45
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