Lenovo 9704ALU Hardware Maintenance Manual - Page 83
Replacing the power supply, Observe the power supply cable routing underneath the hard disk drive.
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6. Replace any PCI adapters that were removed. 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. 7. Go to "Completing the FRU replacement" on page 88. 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 serviceable parts inside these components. This procedure describes how to remove and replace the power supply. 1. Remove the cover. See "Removing the cover" on page 71. 2. Remove the drive bay assembly. See "Accessing system board components and drives" on page 72. 3. Disconnect all power supply cables from the system board. See the system board diagram for your machine type at "System board connectors" on page 70. 4. Remove the hard disk drive. See "Replacing the hard disk drive" on page 82. Note: Observe the power supply cable routing underneath the hard disk drive. 5. 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. 6. 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. Chapter 8. Replacing FRUs (Types 7065, 7096, 9351, 9358, 9438, 9481, 9489, 9703, 9784, 9788, 9792, 9853, 9949) 75