Maintenance and Service Guide

5. Disconnect the battery (see Battery on page 39).
6. Remove the GPU fan (see Fans on page 68).
Remove the discrete graphics board:
▲ Remove the two screws (1) securing the board to the system board, and then remove the discrete
graphics board (2).
Reverse this procedure to install the discrete graphics board.
Display LED board
Description Spare part number
Display LED board 848374-001
Before removing the display LED board, 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.
4. Remove the service door (see Service door on page 36).
5. Remove the service door (see Service door on page 36).
6. Remove the battery (see Battery on page 39).
7. Remove the secondary hard drive (see Hard drive on page 42).
8. Remove the secondary SSD (see Solid-state drives (M.2) on page 48).
70 Chapter 6 Removal and replacement procedures for authorized service provider parts