Replacing The Power Button Board - Lenovo S400z Hardware Maintenance Manual

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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 109.

Replacing the power button board

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.
To replace the power button board, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See "Removing the computer cover" on page 88.
3. Locate the power button board. See "Computer components" on page 31.
4. Disconnect the power button board cable from the power button board.
5. Press the two retaining clips that secure the power button board as shown, and then lift it out of the
chassis.
Figure 27. Removing the power button board
6. Position the new power button board in the chassis, and then slide it into the chassis until it snaps
into position.
Figure 28. Installing the power button board
7. Connect the power button board cable to the power button board.
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 109.
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Lenovo S400z and S405z Hardware Maintenance Manual

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