Lenovo ThinkCentre Edge 91 Hardware Maintenance Manual (HMM) (April 2012) - Th - Page 124

Replacing the hard disk drive

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The battery normally requires no charging or maintenance throughout its life; however, no battery lasts forever. If the battery fails, the date, time, and configuration information (including passwords) are lost. An error message is displayed when you turn on the computer. Refer to the "Lithium battery notice" in the ThinkCentre Safety and Warranty Guide for information about replacing and disposing of the battery. To replace the battery, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Remove the computer cover. See "Removing the computer cover" on page 112. 3. Locate the battery. See "Locating parts on the system board" on page 109. 4. Remove the old battery. Figure 49. Removing the old battery 5. Install a new battery. Figure 50. Installing a new battery 6. Reinstall the computer cover and connect the cables. See "Completing the parts replacement" on page 141. Note: When the computer is turned on for the first time after replacing the battery, 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 6 "Using the Setup Utility program" on page 43. 9. To complete the installation or replacement, go to "Completing the parts replacement" on page 141 Replacing the hard disk drive Attention: Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the ThinkCentre User Guide. To obtain a copy of the ThinkCentre User Guide, go to: http://www.lenovo.com/ThinkCentreUserGuides 120 ThinkCentre Hardware Maintenance Manual

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The battery normally requires no charging or maintenance throughout its life; however, no battery lasts
forever. If the battery fails, the date, time, and configuration information (including passwords) are lost. An
error message is displayed when you turn on the computer.
Refer to the “Lithium battery notice” in the
ThinkCentre Safety and Warranty Guide
for information about
replacing and disposing of the battery.
To replace the battery, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See “Removing the computer cover” on page 112.
3. Locate the battery. See “Locating parts on the system board” on page 109.
4. Remove the old battery.
Figure 49. Removing the old battery
5. Install a new battery.
Figure 50. Installing a new battery
6. Reinstall the computer cover and connect the cables. See “Completing the parts replacement” on
page 141.
Note:
When the computer is turned on for the first time after replacing the battery, 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 6 “Using the Setup
Utility program” on page 43.
9. To complete the installation or replacement, go to “Completing the parts replacement” on page 141
Replacing the hard disk drive
Attention:
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
in the
ThinkCentre User Guide
. To obtain a copy of the
ThinkCentre User Guide
, go to:
120
ThinkCentre Hardware Maintenance Manual