5 Removal and replacement procedures for
Authorized Service Provider parts
CAUTION: Components described in this chapter should only be accessed 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 13 for details.
This chapter provides removal and replacement procedures.
There are as many as 92 screws that must be removed, replaced, or loosened when servicing Authorized
Service Provider only parts. Make special note of each screw size and location during removal and
replacement.
Bottom cover
Description Spare part number
Bottom cover (includes feet) 850905-001
Bottom cover, lightweight models (includes feet)
NOTE: Lightweight models use a display with a plastic bezel without edge-to-edge glass.
857630-001
Before removing the bottom cover, 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 unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
Remove the bottom cover:
1. Remove the eight Torx T8M2.0×3.0 screws (1) that secure the bottom cover to the computer.
Component replacement procedures 23
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