Lenovo ThinkCentre M91p (English) User Guide - Page 51

Replacing the heat sink, To complete the installation or replacement

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4. Remove the old battery. Figure 20. Removing the old battery 5. Install a new battery. Figure 21. Installing a new battery 6. Reconnect all the cables to the system board and close the computer cover. See "Completing the parts replacement" on page 51. 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. Turn on the computer and all attached devices. 8. Use the Setup Utility program to set the date, time, and any passwords. See Chapter 7 "Using the Setup Utility program" on page 61. 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 51. Replacing the heat sink Attention: Do not open your computer or attempt any repair before reading and understanding the "Important safety information" on page vii. This section provides instructions on how to replace the heat sink. CAUTION: The heat sink might be very hot. Turn off the computer and wait three to five minutes to let the computer cool before opening the computer cover. To replace the heat sink, do the following: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. Chapter 5. Installing or replacing hardware 37

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4. Remove the old battery.
Figure 20. Removing the old battery
5. Install a new battery.
Figure 21. Installing a new battery
6. Reconnect all the cables to the system board and close the computer cover. See “Completing the
parts replacement” on page 51.
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. Turn on the computer and all attached devices.
8. Use the Setup Utility program to set the date, time, and any passwords. See Chapter 7 “Using the Setup
Utility program” on page 61.
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 51.
Replacing the heat sink
Attention:
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
on page vii.
This section provides instructions on how to replace the heat sink.
CAUTION:
The heat sink might be very hot. Turn off the computer and wait three to five minutes to let the
computer cool before opening the computer cover.
To replace the heat sink, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
Chapter 5
.
Installing or replacing hardware
37