Replacing The Card Reader - Lenovo ThinkCentre M90z Hardware Maintenance Manual

4. Remove the frame stand or lift stand. See "Removing or reinstalling the frame stand" on page 72 or
"Removing or reinstalling the lift stand" on page 72.
5. Remove the rear I/O assembly cover. See "Removing or reinstalling the rear I/O assembly cover"
on page 74.
6. Remove the wall mount cover. See "Removing or reinstalling the wall mount cover" on page 75.
7. Note the routing of the microprocessor fan assembly cable and then disconnect the microprocessor fan
assembly cable from the system board.
8. Remove the three screws
microprocessor fan assembly off the system board.
Figure 33. Removing the microprocessor fan assembly
9. Position the new microprocessor fan assembly on the system board and align the three screw holes in
the new microprocessor fan assembly with those in the system board.
10. Install the three screws to secure the microprocessor fan assembly to the system board.
11. Connect the microprocessor fan assembly cable to the system board. See "System board connectors"
on page 70.
12. Reinstall the wall mount cover and the rear I/O assembly cover.
13. Go to "Completing the parts replacement" on page 110.

Replacing the card reader

Attention
Do not open your computer or attempt any repair before reading and understanding the "Important safety
information" in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy
of the ThinkCentre Safety and Warranty Guide, go to:http://www.lenovo.com/support
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ThinkCentre Hardware Maintenance Manual
1 that secure the microprocessor fan assembly and then lift the