Replacing The Power Supply - Lenovo 3000 J 7387 Hardware Maintenance Manual

Replacing the power supply

Attention
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 servicable parts inside
these components.
1. Remove the cover. See "Removing the cover" on page 114.
2. Remove the drive bay assembly. See "Removing and replacing the drive bay
assembly" on page 118.
3. Disconnect all power supply cables from the drives.
4. Disconnect all power supply cables from the system board. See "Identifying
parts on the system board" on page 116.
5. Remove the hard disk drive. See "Replacing the hard disk drive" on page 140.
6. The system board must be moved out of the way to remove the power supply.
Remove the screws that secure the system board to the chassis and slide the
system board away from the power supply.
Note: You do not have to remove the system board from the chassis to
remove the power supply.
7. At the rear of the chassis, remove the three screws that secure the power
supply. Also remove the screw that secures the power supply at the front.
8. Lift the power supply out of the chassis.
9. Install the new power supply and install the three screws that secure the
power supply at the rear of the chassis and install the screw that secures the
power supply at the front.
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398)
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