System board
Prerequisite
Before you start, read Chapter 1 “Important safety information” on page 1 and print the following
instructions.
Replacement procedure
1. Remove the computer stand. See “Computer stand” on page 61.
2. Remove the rear cover. See “Rear cover” on page 65.
3. Remove the optical drive. See “Optical drive” on page 66.
4. Remove the optical drive holder. See “Optical drive holder” on page 69.
5. Remove the system board shield. See “System board shield” on page 71.
6. Remove the VESA mount bracket cover. See “VESA mount bracket cover” on page 74.
7. Remove the VESA mount bracket. See “VESA mount bracket” on page 76.
8. Remove the storage drive. See “Storage drive and storage drive bracket” on page 78.
9. Remove the system fan. See “System fan” on page 83.
10. Remove the heat sink. See “Heat sink” on page 85.
11. Remove the M.2 solid-state drive. See “M.2 solid-state drive” on page 90.
12. Remove the microprocessor. See “Microprocessor” on page 94.
13. Remove the serial connector module. See “Serial connector module” on page 100.
14. Remove cable cover. See “Cable cover” on page 102.
15. Remove all memory modules. See “Memory module” on page 104.
16. Remove the Wi-Fi card. See “Wi-Fi card” on page 107.
17. Remove the card reader. See “Card reader” on page 116.
18. Record the cable routing and cable connections, and then disconnect all cables from the system board.
See “System board” on page 59.
19. Depending on your computer model, refer to one of the following to replace the system board.
Notes:
• Handle the system board carefully by its edges.
• The failing system board must be returned with a microprocessor socket cover to protect the pins
during shipping and handling.
• M70a
Chapter 6. Hardware removal and installation 119
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