Lenovo B70 80 Laptop User Guide

Chapter 4. Troubleshooting
27
Other problems
Your computer does not 
respond.To turn off your computer, press and hold the power 
button for 4 seconds or more. If the computer still 
does not respond, remove the battery pack and the 
AC power adapter. 
Your computer might lock when it enters sleep mode 
during a communication operation. Disable the sleep 
timer when you are working on the network.
I need to start the computer 
from a connected device, 
but the device does not 
appear on the boot device...

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Appendix. CRU instructions
Replacing the battery  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
To replace the battery, 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.
3Unlock the manual battery latch  . Slide the spring-loaded latch to the 
unlocked position to eject the battery...

Appendix. CRU instructions
29
Replacing the hard disk drive - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
You can increase the storage capacity of your computer by replacing the hard 
disk drive with one of greater capacity. You can purchase a new hard disk 
drive from your reseller or Lenovo marketing representative.
The hard disk drive is very sensitive. Incorrect handling may cause damage 
and permanent loss of data on it. Before removing the hard disk...

30
Appendix. CRU instructions
To replace the hard disk 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 unit/Mini PCI 
Express Card slot compartment cover.
a. Loosen the screws that secure the compartment cover  .
b. Remove the compartment cover  .
a...

Appendix. CRU instructions
31
5Remove the frame fixing screws  .
6Pull the tab in the direction shown by arrow  .
c
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c
c
c
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Appendix. CRU instructions
7Take out the hard disk drive secured in a metal frame  .
8Remove the screws and detach the metal frame from the hard disk drive.
9Attach the metal frame to a new hard disk drive and tighten the screws.
0Put the hard disk drive gently into the hard disk drive bay with the tab
facing upwards and the connectors facing each other, then push it firmly
into space.
AReinstall the frame fixing screw.
BReinstall the compartment cover and tighten the screws.
CReinstall the battery...

Appendix. CRU instructions
33
Replacing memory  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
You can increase the amount of memory in your computer by installing a 
double-data-rate three  low voltage synchronous dynamic random access 
memory (DDR3L SDRAM)-available as an option in the memory slot of your 
computer. DDR3L SDRAMs are available in various capacities.
 To replace a DDR3L SDRAM, do the...

34
Appendix. CRU instructions
6If two DDR3L SDRAMs are already installed in the memory slot, remove 
one of them to make room for the new one by pressing 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.
7Align the notch of the DDR3L SDRAM with the protrusion of the socket 
and gently insert the DDR3L SDRAM into the socket at a 30-45° angle.
8Push the DDR3L SDRAM inward toward the socket until the latches on 
both edges of the socket...

Appendix. CRU instructions
35
Replacing the fan assembly  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
To replace the fan assembly, 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 unit/Mini PCI
Express...

36
Appendix. CRU instructions
5Detach the fan connector in the direction shown by arrow   and loosen
the three screws   to lift the fan assembly.c
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