Lenovo ThinkCentre M92z Hardware Maintenance Manual - ThinkCentre M92z (type 3 - Page 127

Replacing the volume control module, parts on the system board

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4. Locate the power switch and control button board. See "Locating major FRUs and CRUs (for models with the 20-inch display)" on page 73 or "Locating major FRUs and CRUs (for models with the 23-inch display)" on page 76. 5. Note the power switch and control button board cable routing and disconnect the cable from the system board. See "Locating parts on the system board" on page 79. 6. Remove the LCD bracket. See "Replacing the LCD panel" on page 115. 7. Remove the screws 1 to disengage the power switch and control button board from the front bezel. Figure 52. Removing the power switch and control button board 8. Align the screw holes in the new power switch and control button board with the corresponding ones in the front bezel. Then, install the screws to secure the new power switch and control button board to the front bezel. 9. Connect the new power switch and control button board cable to the system board. See "Locating parts on the system board" on page 79. 10. Reinstall the LCD bracket. See "Replacing the LCD panel" on page 115. What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete the installation or replacement, go to "Completing the parts replacement" on page 127. Replacing the volume control module Attention: Do not open your computer or attempt any repair before reading and understanding "Important Safety Information" on page 1. This section provides instructions on how to replace the volume control module. Chapter 9. Replacing FRUs 123

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4. Locate the power switch and control button board. See “Locating major FRUs and CRUs (for models
with the 20-inch display)” on page 73 or “Locating major FRUs and CRUs (for models with the 23-inch
display)” on page 76.
5. Note the power switch and control button board cable routing and disconnect the cable from the system
board. See “Locating parts on the system board” on page 79.
6. Remove the LCD bracket. See “Replacing the LCD panel” on page 115.
7. Remove the screws
1
to disengage the power switch and control button board from the front bezel.
Figure 52. Removing the power switch and control button board
8. Align the screw holes in the new power switch and control button board with the corresponding ones in
the front bezel. Then, install the screws to secure the new power switch and control button board to
the front bezel.
9. Connect the new power switch and control button board cable to the system board. See “Locating
parts on the system board” on page 79.
10. Reinstall the LCD bracket. See “Replacing the LCD panel” on page 115.
What to do next:
•
To work with another piece of hardware, go to the appropriate section.
•
To complete the installation or replacement, go to “Completing the parts replacement” on page 127.
Replacing the volume control module
Attention:
Do not open your computer or attempt any repair before reading and understanding “Important Safety Information”
on page 1.
This section provides instructions on how to replace the volume control module.
Chapter 9
.
Replacing FRUs
123