23. If a locking device is available, use it to lock the computer.
24. Reconnect the external cables and power cords to the corresponding connectors on the computer.
Internal speakers
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 serial connector module. See “Serial connector module” on page 100.
9. Remove cable cover. See “Cable cover” on page 102.
10. Disconnect the internal speaker cable from the system board.
11. Depending on your computer model, refer to one of the following to replace the internal speakers.
• M70a
Figure 131. Removing the internal speakers
122 M70a and M90a Hardware Maintenance Manual
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