Lenovo B50 45 Laptop User Guide

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35
To replace the hard disk drive, do the following:
1Remove the battery pack. For details, see “Replacing the battery pack” on 
page 33.
2Remove the screws , and then remove the bottom slot cover .
3Remove the frame fixing screws .
ab
1
2
1
c
3
3 
						

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Appendix A. CRU instructions
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 
page 33.
d
4 
						

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37
Replacing the memory  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
You can increase the amount of memory in your computer by installing 
double data rate three synchronous dynamic random access memory (DDR3 
SDRAM)-available as an option-in the memory slot of your computer. DDR3 
SDRAM modules are available in various capacities.
 To install a DDR3 SDRAM module, do the following: 
1Touch a metal table or a grounded metal object to reduce any static  
electricity in your body, which could damage the DDR3 SDRAM. Do not 
touch the contact edge of the DDR3 SDRAM module.
2Remove the battery pack. For details, see “Replacing the battery pack” on 
page 33.
3Remove the screws , and then remove the bottom slot cover .
Note:  
Use only the memory types supported by your computer. If you incorrectly install 
optional memory, or install an unsupported memory type, a warning beep will sound 
when you try to start the computer.
Make sure the computer is turned off and all the cables disconnected from the computer 
before you replace the memory.
Make sure the computer display is closed to avoid being damaged.
Two memory channels are supported. Both channels should have a memory of the same 
size and rank. You should install the ram in Slot 1 if there is only ONE ram module. 
(B40-30/N40-30/B50-30)
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Appendix A. CRU instructions
4If two DDR3 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 DDR3 SDRAM for future use.
5Align the notch of the DDR3 SDRAM module with the protrusion of the 
socket and gently insert the new module at a 30-45° angle.
6Push the DDR3 SDRAM module down until the latches on both sides of 
the socket lock into its position.
7After aligning the attachment clips with their matching gaps, reinstall the 
bottom slot cover.
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2
2
1 
						

							Appendix A. CRU instructions
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8Reinstall the battery pack. For details, see “Replacing the battery pack” on 
page 33.
To make sure that the DDR3 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.  
						

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Appendix A. CRU instructions
Replacing the wireless LAN card - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
To replace the wireless LAN card, do the following:
1Remove the battery pack. For details, see “Replacing the battery pack” on 
page 33.
2Remove the screws , and then remove the bottom slot cover .
3Disconnect the two wireless LAN cables (one black, one white) . 
Remove the screw that secures the wireless LAN card .
Note:  Make sure the computer is turned off and all the cables disconnected from the computer 
before you replace the LAN card.
Make sure the computer display is closed to avoid being damaged.
ab
1
2
1
c
d
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33 
						

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4Remove the wireless LAN card .
5Install the new wireless LAN card and tighten the screw to secure the 
LAN card.
6Reconnect the two wireless LAN cables (one black, one white).
7Reinstall the bottom slot cover and tighten the screws.
8Reinstall the battery pack. For details, see “Replacing the battery pack” on 
page 33.
Note: When installing or reinstalling the wireless LAN card, make sure to plug the black 
cable into the jack labeled AUX and the white cable into the jack labeled MAIN. 
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Appendix A. CRU instructions
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 33.
2Remove the screw .
B40-30/N40-30/B40-70/N40-70/B40-45/N40-45/B40-80/N40-80:
B50-30/B50-30 Touch/B50-70/N50-70/B50-45/N50-45/B50-80/N50-80:
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 computer display is closed to avoid being damaged.
a
1
1 
						

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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 33.
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2 
						

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Appendix A. CRU instructions
Replacing the keyboard  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
To replace the keyboard, do the following:
1Remove the battery pack. For details, see “Replacing the battery pack” on 
page 33.
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 computer 
before you replace the keyboard.
Make sure the computer display is closed to avoid being damaged.
a
1
1
1