Replacing The Power Supply - Lenovo ThinkCentre E50 Hardware Maintenance Manual

7. Replace any adapters that were removed to gain access to the battery. See
8. Go to "Completing the FRU replacement" on page 116.

Replacing the power supply

1. Remove the left-side cover. See "Removing the covers" on page 85.
2. Disconnect all power supply cables from the drives.
3. Disconnect all power supply cables from the system board. See the system
4. At the rear of the chassis, remove the four screws that secure the power supply.
94
Hardware Maintenance Manual
"Replacing a PCI adapter" on page 92 for instructions for replacing adapters.
Note: When the computer is turned on for the first time after battery
replacement, an error message might be displayed. This is normal after
replacing the battery.
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.
board illustration for your machine type at "Identifying parts on the system
board" on page 86.