Lenovo Ideapad 305 15iby User Guide

							Appendix A. CRU instructions
35
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 31.
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. 
(on select models)
ab
1
2
1 
						

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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.
8Reinstall the battery pack. For details, see “Replacing the battery pack” on
page 31.
11
2
2
1 
						

							Appendix A. CRU instructions
37
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.  
						

							38
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 31.
2Remove the screw  .
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 31.
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
b
2 
						

							Appendix A. CRU instructions
39
Replacing the keyboard  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
To replace the keyboard, do the following:
1Remove the battery pack. For details, see “Replacing the battery pack” on 
page 31.
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 
						

							40
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 31.
bc
2
23
d
ef
4
56 
						

							Appendix A. CRU instructions
41
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 Guide User Guide
AC power adapter  ×
Power cord  ×
Battery pack  × ×
Memory ×
Safety, Warranty, and Setup Guide User Guide
Hard disk drive ×
Keyboard ×
Optical drive  × 
						

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Trademarks
The following terms are trademarks or registered trademarks of Lenovo in 
the United States, other countries, or both.
Lenovo
OneKey
Ve r i F a c e
ideapad 
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. 
						

							en-US
Rev. RP01