Lenovo 30CY, Hardware Maintenance Manual, Page: 142 / 224

What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 187.
Power supply assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
Although there are no moving parts in your computer after the power cord has been disconnected, the
following warnings are required for your safety.
CAUTION:
Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury,
seek medical care immediately.
DANGER
Disconnect all power cords from electrical outlets before removing the computer cover or any part
that has the above label attached.
DO NOT disassemble components that have the above label attached. There are no serviceable parts inside
these components.
Your product is designed for safe use. However, hazardous voltage, current, and energy levels are present
inside any component that has this label attached. Disassembling of these components might cause fire or
might even result in death. If you suspect a problem with one of these parts, contact a service technician.
To remove and install the power supply assembly, do the following:
1. Prepare your computer. See “Preparing your computer” on page 98.
2. To remove the power supply assembly, do the following:
a. Disconnect the power supply assembly cables from the system board and all drives. See “Parts on
the system board” on page 38.
b. Release the power supply assembly cables from the cable clips and ties.
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P330 Hardware Maintenance Manual