E-Privacy Button Board (M90A) - Lenovo ThinkCentre M70a Hardware Maintenance Manual

Figure 118. Installing the cover presence switch (intrusion switch)
9. Connect the new cover presence switch cable (intrusion switch cable) to the system board.
10. Reinstall the removed parts.
11. Place the computer in an upright position.
12. If a locking device is available, use it to lock the computer.
13. Reconnect the external cables and power cords to the corresponding connectors on the computer.

E-Privacy button board (M90a)

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 M90a storage drive. See "Storage drive and storage drive bracket" on page 78.
7. Disconnect the e-Privacy cable from the system board.
8. Replace the e-Privacy button board.
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Chapter 6 Hardware removal and installation
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