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Appendix A. CRU instructions
This chapter provides CRU instructions for your computer.
• “Replacing the battery” on page 29
• “Replacing the hard disk drive” on page 30
• “Replacing a memory module” on page 32
• “Removing the optical drive (on some models)” on page 33
Replacing the battery
Before you start, print these instructions.
This system does not support batteries that are not genuine Lenovo-made or authorized. The system will
continue to boot, but may not charge unauthorized batteries. Attention: Lenovo has no responsibility for
the performance or safety of unauthorized batteries, and provides no warranties for failures or damage
arising out of their use.
To replace the battery, do the following:
1. Turn off the computer, or enter hibernation mode. Disconnect the ac power adapter and all cables
from the computer.
2. Close the computer display, and turn the computer over.
3. Unlock the manual battery latch 1 . Holding the spring-loaded battery latch in the unlocked position 2 ,
remove the battery pack in the direction shown by the arrow 3 .
1
a
b
c
4. Install a fully charged battery.
5. Slide the manual battery latch to the locked position.
6. Turn the computer over again. Connect the ac power adapter and the cables to the computer again.
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