Replacing A Microprocessor - Lenovo ThinkStation 4353 Hardware Maintenance Manual

12. Gently press down the small handle
down the small handle
and secure the new microprocessor in the socket.
Note: There are two marks on the microprocessor retainer. Ensure that you close the small handle
marked with
correct sequence when you close the small handles.
Figure 45. Securing the microprocessor in the socket
13. Install the heat sink and fan assembly. See "Replacing the heat sink and fan assembly" on page 98.
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 124.

Replacing a microprocessor

Attention:
Do not open your computer or attempt any repair before reading and understanding the "Important Safety
Information" on page 1.
This section provides instructions on how to replace a microprocessor.
Depending on the model, your computer might come with one or two microprocessors. For computer
models with one microprocessor, the microprocessor is installed in the microprocessor socket 1 and the
microprocessor socket 2 is protected by a plastic socket cover. You can purchase a microprocessor option
kit from Lenovo and install the second microprocessor to expand computer capabilities.
CAUTION:
The heat sink and microprocessor might be very hot. Turn off the computer and wait
three to five minutes to let the computer cool before removing the computer cover.
Notes:
• Ensure that you install the correct type of microprocessor option your computer supports. When two
microprocessors are installed, both must be identical.
1 , and then push the handle inward to secure it. Then gently press
2 and push the handle inward to lock the microprocessor retainer into position
first, and then close the small handle marked with . Always follow the
.
Chapter 10 Replacing FRUs
115