Lenovo ThinkCentre E51 Hardware Maintenance Manual - Page 159

the chassis and to the system board.

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Page 159 highlights

Replacing the power switch/ LED assembly 1. Remove cover. See "Removing the cover" on page 121. 2. Remove the drive bay assembly. See "Removing and replacing the drive bay assembly" on page 127. 3. Remove the hard disk drive. See "Replacing the hard disk drive" on page 150. 4. Disconnect the power switch/LED assembly cable from the system board. See the system board illustration for your machine type at "Identifying parts on the system board" on page 123. 5. Remove the screw that secures the power switch/LED assembly to the chassis. 6. Note the power switch/LED assembly cable routing and remove the assembly from the chassis. 7. Route the cable for the new power switch/LED assembly through the hole in the chassis and to the system board. 8. Install the power switch/LED assembly into the chassis and secure the assembly with the screw. 9. Connect the power switch/LED cable to the system board. 10. Reinstall the hard disk drive. See "Replacing the hard disk drive" on page 150. 11. Reinstall the drive bay assembly. See "Removing and replacing the drive bay assembly" on page 127. 12. Go to "Completing the FRU replacement" on page 154. Chapter 9. Replacing FRUs (Desktop computers) 153

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Replacing the power switch/ LED assembly
1.
Remove cover. See “Removing the cover” on page 121.
2.
Remove the drive bay assembly. See “Removing and replacing the drive bay
assembly” on page 127.
3.
Remove the hard disk drive. See “Replacing the hard disk drive” on page 150.
4.
Disconnect the power switch/LED assembly cable from the system board. See
the system board illustration for your machine type at “Identifying parts on
the system board” on page 123.
5.
Remove the screw that secures the power switch/LED assembly to the chassis.
6.
Note the power switch/LED assembly cable routing and remove the assembly
from the chassis.
7.
Route the cable for the new power switch/LED assembly through the hole in
the chassis and to the system board.
8.
Install the power switch/LED assembly into the chassis and secure the
assembly with the screw.
9.
Connect the power switch/LED cable to the system board.
10.
Reinstall the hard disk drive. See “Replacing the hard disk drive” on page
150.
11.
Reinstall the drive bay assembly. See “Removing and replacing the drive bay
assembly” on page 127.
12.
Go to “Completing the FRU replacement” on page 154.
Chapter 9. Replacing FRUs (Desktop computers)
153