Lenovo ThinkCentre M70a Hardware Maintenance Manual page 146

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 bump cover. See "Bump cover" on page 88.
12. Remove the M.2 solid-state drive. See "M.2 solid-state drive" on page 90.
13. Remove the microprocessor. See "Microprocessor" on page 94.
14. Remove the serial connector module. See "Serial connector module" on page 100.
15. Remove the cable cover. See "Cable cover" on page 102.
16. Remove all memory modules. See "Memory module" on page 104.
17. Remove the Wi-Fi card. See "Wi-Fi card" on page 107.
18. Remove the cover presence switch (intrusion switch). See "Cover presence switch (intrusion switch)" on
page 113.
19. Remove the M90a e-Privacy button board. See "E-Privacy button board (M90a)" on page 115.
20. Remove the card reader. See "Card reader" on page 116.
21. Remove the system board. See "System board" on page 119.
22. Remove the internal speakers. See "Internal speakers" on page 122.
23. Remove the M90a I/O brackets. See "I/O brackets (M90a)" on page 124.
24. Remove the integrated camera and microphone module. See "Integrated camera and microphone
module" on page 127.
25. Remove the main frame. See "Main frame" on page 130.
26. Remove the front decorative cover. See "Front decoration cover" on page 133.
27. Remove the Wi-Fi antennas. See "Wi-Fi antennas" on page 136.
28. Record the cable routing and cable connections, and then disconnect all cables from the LCD panel.
29. Depending on your computer model, refer to one of the following to replace the LCD bracket and LCD
panel.
• M70a
140
M70a and M90a Hardware Maintenance Manual