Lenovo ThinkCentre M57 Hardware Maintenance Manual - Page 114

Replacing the power switch/LED assembly This procedure describes how to remove and replace the power switch/LED assembly. 1. Remove cover. See "Removing the cover" on page 89. 2. Remove the drive bay assembly. See "Accessing system board components and drives" on page 90. 3. Remove the hard disk drive. See "Replacing the hard disk drive" on page 104. 4. Disconnect the power switch/LED assembly cable from the system board. See the system board illustration for your machine type at "System board connectors" on page 88. 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 104. 11. Align the drive bay assembly with the two slots and rails on the sides of the chassis slide the drive bay assembly towards the rear of the chassis until it snaps into position. 12. Reinstall the front bezel. 13. Go to "Completing the FRU replacement" on page 112. 108 Hardware Maintenance Manual