Lenovo ThinkCentre M91p (English) User Guide - Page 55

attached. There are no serviceable parts inside these components. If you suspect a problem

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DANGER Hazardous moving parts. Keep fingers and other body parts away. CAUTION: Never remove the cover on a power supply or any part that has the following label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician. To replace the power supply assembly, 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. Open the computer cover. See "Opening the computer cover" on page 30. 3. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 30. 4. Remove the hard disk drive. See "Replacing the hard disk drive" on page 50. Chapter 5. Installing or replacing hardware 41

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DANGER
Hazardous moving parts. Keep fingers and other body parts away.
CAUTION:
Never remove the cover on a power supply or any part that has the following label attached.
Hazardous voltage, current, and energy levels are present inside any component that has this label
attached. There are no serviceable parts inside these components. If you suspect a problem with
one of these parts, contact a service technician.
To replace the power supply assembly, 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. Open the computer cover. See “Opening the computer cover” on page 30.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 30.
4. Remove the hard disk drive. See “Replacing the hard disk drive” on page 50.
Chapter 5
.
Installing or replacing hardware
41