Lenovo G40 Manual

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Important service information
Use the following strategy to prevent unnecessary expense for replacing and 
servicing FRUs:
• If you are instructed to replace an FRU, but the replacement does not solve 
the problem, reinstall the original FRU before you continue.
• Some computers have both a processor board and a system board. If you 
are instructed to replace either of them, and replacing one of them does not 
solve the problem, reinstall that...

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
Important information about replacing RoHS compliant FRUs
RoHS, The Restriction of Hazardous Substances in Electrical and 
Electronic Equipment Directive (2002/95/EC) is a European Union legal 
requirement affecting the global electronics industry. RoHS requirements 
must be implemented on Lenovo products placed on the market after 
June 2006. Products on the market before...

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General checkout 
General checkout 
This chapter presents the following information:
• “What to do first” on page 20
• “Power system checkout” on page 21
Before you go to the checkout, make sure to read the following important\
 notes:
Important notes:
•	 Only	certified	trained	personnel	can	service	the	computer.
• 	 Before 	
r
 eplacing 	
any
 	
FRU,
 	
r
 ead 	
the
 	
entir
 e 	
page
 	
on
 	
r
 emoving 	
and
 	
r
 eplacing
	FRUs.
•...

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
What to do first
When you do return an FRU, you must include the following information in the 
parts exchange form or parts return form that you attach to it:
1. Name and phone number of servicer
2. Date of service
3. Date on which the machine failed
4. Date of purchase
5. Procedure index  and page number in which the failing FRU was detected 
6. Failing FRU name and part...

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General checkout 
Power system checkout
To verify a symptom, follow the steps below:
1. Turn off the computer.
2. Remove the battery pack.
3. Connect the AC adapter.
4. Make sure that power is supplied when you turn on the computer.
5. Turn off the computer.
6. Disconnect the AC adapter and install the charged battery pack.
7. Make sure that the battery pack supplies power when you turn on the computer.
If you suspect a power problem, see the...

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
Perform operational charging. If the battery status indicator or icon does not 
light on, remove the battery pack and let it return to room temperature. Reinstall 
the battery pack. If the charge indicator or icon is still off, replace the battery 
pack.
If the charge indicator still does not light on, replace the system boar\
d. Then 
reinstall the battery pack. If it is...

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Related service information
Related service information
This chapter presents the following information:
• “Restoring the factory contents by using OneKey Recovery” on page \
23
• “Passwords” on page 24
• “Power management” on page 25
Restoring the factory contents by using OneKey Recovery
Restore of factory default
The Lenovo G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 computers come 
with  pre-installed  OneKey  Recovery  System.  In  order  to...

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
Passwords
As many as three passwords may be needed for any Lenovo computer: 
the power-on password (POP), the hard disk password (HDP), and the 
administrator password.
If any of these passwords has been set, a prompt for it appears on the screen 
whenever the computer is turned on. The computer does not start until the 
password is entered.
Power-on password
A power-on...

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Related service information
Power management
Note: Power management modes are not supported for APM operating system.
To reduce power consumption, the computer has three power management 
modes: screen blank, sleep (standby), and hibernation.
Screen blank state
If the time set on the “Turn off monitor” timer in the operating system expires, 
the LCD backlight turns off. You can also turn off the LCD backlight by   
pressing 
.
To end screen...

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
Lenovo G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75
This chapter presents the following product-specific service references and 
product-specific parts information:
• “Specifications” on page 26
• “Status indicators” on page 29
• “Hotkeys” on page 30
• “FRU replacement notices” on page 31
• “Removing and replacing an FRU” on page 32
• “Locations” on page 66
• “Parts list” on...