Lenovo ThinkCentre E51 Hardware Maintenance Manual - Page 100
Replacing the power supply, Attention
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7. Replace any adapters that were removed to gain access to the battery. See "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. 8. Go to "Completing the FRU replacement" on page 116. 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 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 board illustration for your machine type at "Identifying parts on the system board" on page 86. 4. At the rear of the chassis, remove the four screws that secure the power supply. 94 Hardware Maintenance Manual
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