Chapter 10. Replacing Frus (Machine Types: 10A4, 10A5, 10Aa, 10Ab, 10Df, 10Dg, 10Dh, 10Dj, 10E8, 10E9, 10Ea, And 10Eb); Removing The Computer Cover - Lenovo ThinkCentre M83 Hardware Maintenance Manual

Chapter 10. Replacing FRUs (machine types: 10A4, 10A5,
10AA, 10AB, 10DF, 10DG, 10DH, 10DJ, 10E8, 10E9, 10EA, and
10EB)
This chapter provides information about the FRU replacement instructions.
Important: Be sure to read and understand Chapter 1 "Safety information" on page 1 before replacing any
FRU. These precautions and guidelines will help you work safely.
Note: FRU replacements are to be done only by trained service technicians.

Removing the computer cover

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 "Safety information" on page 1.
This section provides instructions on how to remove the computer cover.
CAUTION:
Before you open the computer cover, turn off the computer and wait several minutes until the
computer is cool.
To remove the computer cover, do the following:
1. Remove any media from the drives and turn off all attached devices and the computer.
2. Disconnect all power cords from electrical outlets.
3. Disconnect the power cord, Input/Output cables, and any other cables that are connected to the
computer.
4. Remove the screw that secures the computer cover.
Figure 219. Removing the screw that secures the computer cover
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