Lenovo M490s notebook - Manual (Page 44)

6. Install a new backup battery.
7. Reinstall the computer cover, and then reinstall the screws.
8. Reinstall the battery. See “Replacing the battery” on page 27.
9. Turn the computer over again. Connect the ac power adapter and all cables.
Replacing the hard disk drive
Before you start, print these instructions.
Prerequisites for the procedure
Attention: The hard disk drive is very sensitive. Incorrect handling can cause damage and permanent loss
of data. Observe the following guidelines:
• Replace the hard disk drive only if you upgrade it or have it repaired. The connectors and slot of the hard
disk drive are not designed for frequent changes, or drive swapping.
• Do not drop the drive or subject it to physical shocks. Put the drive on a material, such as soft cloth, that
absorbs the physical shock.
• Do not apply pressure to the cover of the drive.
• Do not touch the connector.
• Before removing the hard disk drive, make a backup copy of all the information on it, and then turn
the computer off.
• Never remove the drive while the computer is operating, in sleep mode, or in hibernation mode.
To replace the hard disk drive, do the following:
1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait
three to five minutes to let the computer cool.
2. Close the computer display, and turn the computer over.
3. Remove the battery. See “Replacing the battery” on page 27.
4. Remove the screws 1 and 2 , and then remove the cover 3 .
30 User Guide