Service doors
Description Spare part number
Service door (UMA models) L29058-001
Service door (Discrete models) L34117-001
The bottom of the computer has two service doors. The drive service door provides access to the hard drive
and M.2 solid-state drive. The main service door provides access to the memory modules, wireless modules,
and keyboard screws.
Before removing the service doors, follow these steps:
1. Shut down 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. Place the computer in “Battery Safe mode” (Battery Safe mode on page 31).
3. Disconnect all external devices connected to the computer.
4. 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.
Remove the service door:
1. Loosen the captive Phillips screw (1).
2. Lift the bottom of the door upward (2), and then remove the door from the computer (3).
Reverse these procedures to install the service door.
32 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
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