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Lenovo 7548, 104, 7539, 154 manual Replacing the power supply assembly, Removing the microprocessor

Models: 7539 154 7548 104

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Figure 22. Removing the microprocessor

6.Make sure that the small handle is in the raised position.

7.Remove the protective cover that protects the gold contacts of the new microprocessor.

8.Hold the new microprocessor by its sides and align the small triangle on one corner of the new microprocessor with the corresponding small triangle on one corner of the microprocessor socket.

9.Lower the new microprocessor straight down into the microprocessor socket on the system board.

10.Lower the small handle to secure the new microprocessor in the socket.

11.Reinstall the heat sink and fan assembly. See “Replacing the heat sink and fan assembly” on page 23.

12.Reinstall any parts and reconnect any cables that have been removed or disconnected.

What to do next:

•To work with another piece of hardware, go to the appropriate section.

•To complete the replacement, go to “Completing the parts replacement” on page 43.

Replacing the power supply assembly

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide, go to:

http://www.lenovo.com/support

This section provides instructions on how to replace the power supply assembly.

Although there are no moving parts in your computer after the power cord has been disconnected, the following warnings are required for your safety and proper Underwriters Laboratories (UL) certification.

28ThinkCentre User Guide

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Lenovo 7548, 104, 7539, 154 manual Replacing the power supply assembly, Removing the microprocessor
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7539, 154, 7548, 104 specifications

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