System Board Shield - Lenovo ThinkCentre M90a User Manual

Figure 23. Removing the optical drive holder
Figure 24. Installing the optical drive holder
5. Place the computer in an upright position.
6. If a locking device is available, use it to lock the computer.
7. Reconnect the external cables and power cords to the corresponding connectors on the computer.

System board shield

Prerequisite
Before you start, read Appendix A "Important safety information" on page 83 and print the following
instructions.
Replacement procedure
1. Remove the computer stand. See "Computer stand" on page 48.
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M70a and M90a User Guide