Replacing The Primary Hard Disk Drive - Lenovo ThinkCentre Edge 91 Hardware Maintenance Manual

4. Remove the old battery.
Figure 15. Removing the old battery
5. Install a new battery.
Figure 16. Installing a new battery
6. Reinstall the computer cover and connect the cables. See "Completing the parts replacement" on
page 104.
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 104.

Replacing the primary hard disk drive

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 the primary hard disk drive if your computer has one.
For computer models that do not have an internal hard disk drive and use a remote hard disk drive accessed
through the SMC - Storage Array, contact your network or storage administrator.
To replace the primary hard disk drive, 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 79.
3. Locate the primary hard disk drive. See "Locating internal drives" on page 78.
Note: There is also a secondary hard disk drive bay for you to purchase and install a secondary hard
disk drive by yourself. If you want to install a secondary hard disk drive, use the same way of installing
the primary hard disk drive.
4. Disconnect the signal cable and the power cable from the hard disk drive.
5. Remove the four screws that secure the hard disk drive. Then, slide the hard disk drive out of the chassis.
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ThinkCentre Hardware Maintenance Manual