Lenovo B41 80 B51 80 Laptop User Guide

Appendix A. CRU instructions
35
4Remove the hard disk drive by gently pulling it in the direction of the 
arrow 
.
5Remove the screws and detach the metal frame from the hard disk drive.
6Attach the metal frame to a new hard disk drive and tighten the screws.
7Slide the new hard disk drive firmly into place, and then reinstall the 
frame fixing screws to secure the drive.
8Reinstall the bottom slot cover and tighten the screws.
9Reinstall the battery pack. For details, see “Replacing the battery pack” on...

36
Appendix A. CRU instructions
Replacing the memory  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
You can increase the amount of memory in your computer by installing 
double data rate three synchronous dynamic random access memory 
(DDR3L SDRAM)-available as an option-in the memory slot of your 
computer. DDR3L SDRAM modules are available in various capacities.
 To install a DDR3L SDRAM module,...

Appendix A. CRU instructions
37
4If two DDR3L SDRAM modules are already installed in the memory slot, 
remove one of them to make room for the new one by pulling out on the 
latches on both edges of the socket at the same time. Be sure to save the 
old DDR3L SDRAM for future use.
5Align the notch of the DDR3L SDRAM module with the protrusion of the 
socket and gently insert the new module at a 30-45° angle.
6Push the DDR3L SDRAM module down until the latches on both sides of 
the socket lock into its...

38
Appendix A. CRU instructions
8Reinstall the battery pack. For details, see “Replacing the battery pack” on 
page 32.
To make sure that the DDR3L SDRAM module is installed correctly, do as 
follows: 
1Press the Novo button to open the Novo button menu. 
2Select the BIOS Setup. The System Memory item shows the total amount 
of memory installed in your computer.  

Appendix A. CRU instructions
39
Replacing the optical drive  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
To replace the optical drive, do the following:
1Remove the battery pack. For details, see “Replacing the battery pack” on 
page 32.
2Remove the screw .
B41-80
B51-80
Note:  
Make sure the computer is turned off and all the cables disconnected from the computer 
before you replace the optical drive.
Make sure the...

40
Appendix A. CRU instructions
3Gently pull the optical drive out from its cavity .
4Insert a new optical drive and tighten the screw to secure the drive.
5Reinstall the battery pack. For details, see “Replacing the battery pack” on 
page 32.
b
2 

Appendix A. CRU instructions
41
Replacing the keyboard  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
To replace the keyboard, do the following:
1Remove the battery pack. For details, see “Replacing the battery pack” on 
page 32.
2Remove the screws .
3Turn the computer over and open the display panel.
Note:  
Make sure the computer is turned off and all the cables disconnected from the...

42
Appendix A. CRU instructions
4 Pull to unsnap the keyboard in the direction as shown by the arrows  
. 
5Lift up the keyboard  and detach the connector in the direction shown 
by the arrows .
6Reinstall the new keyboard and tighten the screws.
7Reinstall the battery pack. For details, see “Replacing the battery pack” on 
page 32.
b
c
2
23
d
ef
4
56 

Appendix A. CRU instructions
43
The following table provides a list of CRUs for your computer, and informs 
you of where to find replacement instructions.
Self-service CRUs 
Optional-service CRUs 
Safety, Warranty, and Setup GuideUser Guide
AC power adapter ×
Power cord ×
Battery pack ××
Optical drive ×
Memory×
Safety, Warranty, and Setup GuideUser Guide
Hard disk drive×
Keyboard× 

44
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