Lenovo B70 80 Laptop User Guide

Appendix. CRU instructions
37
6Lift the fan assembly in the direction shown by arrow  . Be careful not
to damage the connector.
7Reinstall the new fan assembly, tighten the screws, and attach the 
connector.
8Reinstall the compartment cover and tighten the screws.
9Reinstall the battery pack.
0Turn the computer over again.
AConnect the AC power adapter and the cables to the computer.
e
e 

38
Appendix. CRU instructions
Replacing the keyboard  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
To replace the keyboard, do the following:
1Turn off the computer. Disconnect the AC power adapter and all cables 
from the computer.
2Close the computer display, and turn the computer over.
3Remove the battery pack. For details, see “Replacing the battery” on page 
28.
4Remove the Hard disk...

Appendix. CRU instructions
39
5Remove the screws  . 
6Turn the computer over, open the display, and lift the keyboard in the 
direction shown by arrow  .
c
c c
c
d
d 

40
Appendix. CRU instructions
7Remove the keyboard from the keyboard bezel and turn the keyboard 
over.
8Pull the keyboard connector slot cover upward as shown by arrow  , 
and detach the keyboard cable from the keyboard connector in the 
direction shown by arrow  .
9Install a new keyboard.
0Connect the keyboard cable to the keyboard connector.
APress the keyboard connector slot cover downward.
BPlace the keyboard into the keyboard bezel, and close the computer dis-
play.
CTurn the computer over,...

Appendix. CRU instructions
41
Removing the optical drive - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
To remove the optical drive, do the following:
1Turn off the computer. Disconnect the AC power adapter and all cables 
from the computer.
2Close the computer display, and turn the computer over.
3Remove the battery pack. For details, see “Replacing the battery” on page
28.
4Remove the Hard disk drive/Memory/Central processing...

42
Appendix. CRU instructions
6Gently pull the optical drive out  .
The following table provides a list of CRUs (Customer Replaceable Units) for 
your computer, and informs you of where to find replacement instructions.
Safety, Warranty, 
and Setup GuideUser Guide
AC power adapter O
Power cord for AC power adapter O
Battery pack O
Hard disk drive O
Memory O
Fa n a ss em bl y O
Keyboard O
Optical drive O
d
d
c 

43
Trademarks
The following terms are trademarks or registered trademarks of Lenovo in 
the United States, other countries, or both.
Lenovo
OneKey
Microsoft and Windows are trademarks of Microsoft Corporation in the 
United States, other countries, or both.
Other company, products, or service names may be trademarks or service 
marks of others. 

Lenovo B70
 B70-80
Read the safety notices and important tips in the included manuals before using your computer.en-USRev. AA00
User Guide

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