Lenovo ThinkCentre M90z, Hardware Maintenance Manual

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11
Microprocessor fan connector
25
System fan connector
12
Internal speaker cable connector
26
Inverter connector
13
Power switch cable connector
27
Power supply fan connector
14
ExpressCard connector
28
Power supply connector
Removing the computer cover
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
This section provides instructions on how to remove the computer cover.
CAUTION:
Turn off the computer and wait three to five minutes to let the computer cool before
removing the computer cover.
To remove the computer cover, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay
it down so that the screen is against the surface and the cover is facing up.
3. Remove any locking device that secures the computer cover, such as an integrated cable lock.
4. Press the two cover-release buttons on the computer cover as shown, slide the computer cover toward
the top of the computer, and then lift the computer cover up to remove it from the chassis.
Figure 5. Removing the computer cover
Chapter 8
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Replacing FRUs
71