Lenovo G40 Manual

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Lenovo G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75
Table 1. Specifications (continued)
FeatureDescription
Bus architecture  
(continued)
• G40-45 GPU: GPP (General Purpose Port), PCIe 2.0, 5GT/s WLAN: PCIe 1.0, 2.5GT/s RAM: DDR3L, 1600MT/s MAX    1 DIMM DDR3L, 1333MT/s MAX    2 DIMM DMI x 4, N/A    NO SUPPORT FDI x 2, N/A    NO SUPPORT LCD: eDP 1.2, 5.4GT/s HDMI Port: HDMI 1.4, 1.65GT/s HDD: SATA 3.0, 6Gb/s ODD: SA TA 1.0, 1.5Gb/s USB Port: USB...

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
Table 1. Specifications (continued)
FeatureDescription
Graphic memory 
chip 
• Integrated/AMD Jel LE
Display• 14.0" 16:9, 1,366 × 768 pixelsStandard 
memory• DDR3L-1,600 MHz SODIMM × 2 (max 16 GB)
CMOS RAM• 256 BytesHard disk drive • 2.5-inch, 7 mm / 9.5 mm SA TA• 320 GB / 500 GB / 1TB 5,400 rpmOptical drive • Internal 9.0 mm (Rambo)I/O port • Combo audio jack × 1 • RJ45...

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Lenovo G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75
Status indicators
The system status indicators below show the computer status:
12
Table 2. Status indicators
IndicatorIndicator
status Charge
status Meaning
1
Power
On (solid white)--- The computer is powered on.
Blinking ---The computer is in sleep mode.
Off ---The computer is powered off.
2
Battery
On (solid white)Charging The battery has more than 80% 
charge.
Discharging The battery has more...

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
Hotkeys
You can access certain system settings quickly by pressing the appropriat\
e
hotkeys.
Table 3. Hotkeys
 :Mutes/unmutes the sound.
:Decreases the volume level.
:Increases the volume level.
:Closes the currently active window.
:Refreshes the desktop or the currently active window.
:Enables/disables the touchpad.
:Enables/disables Airplane  mode.
:Displays all currently...

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Lenovo G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75
FRU replacement notices
This section presents notices related to removing and replacing parts. Read 
this section carefully before replacing any FRU.
Screw notices 
Loose screws can cause a reliability problem. In the Lenovo computer, this 
problem is addressed with special nylon-coated screws that have the following 
characteristics:
• They maintain tight connections.
• They do not easily come...

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
Removing and replacing an FRU
This  section  presents  exploded  figures  with  the  instructions  to  indicate  how  to 
remove and replace the FRU. Make sure to observe the following general rules:
1. Do not attempt to service any computer unless you have been trained and certified. An untrained person runs the risk of damaging parts.
2. Before replacing any FRU, review...

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Lenovo G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75
1010 Battery pack
 DANGER
Only	use	the 	battery 	specified 	in 	the 	parts 	list 	for 	your 	computer . 	Any 	other 	battery 	could
	 ignite 	 or 	 explode. 	
Figure 1. Removal steps of battery pack
Unlock the manual latch  1. Slide the spring-loaded latch to the unlocked 
position  2 to eject the battery pack. Lift up the inner edge of the battery pack, 
pivoting it on the outer edge  3. Gently...

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
1020 Base cover
For access, remove this FRU:
• “1010 Battery pack” on page 33
Figure 2. Removal steps of base cover 
Remove the screws  1. Then remove the base cover 
2.
1
1
2
Step
Screw (quantity) ColorTorque
1M2 × 3.5 mm, flat-head, nylok-coated (2) 
Big Door to D Black
1.5 ~ 2.0 kgf*cm  

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Lenovo G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75
Note: Applying labels to the base cover
The new base cover FRU is shipped with a kit containing labels of several 
kinds. When you replace the base cover, you need to apply the following 
label: 
The following labels need to be peeled off from the old base cover and put on 
the new base cover. 
a Rating label
b Indonesia  D side label
c Brazil BT label
d Brazil WL  label
e Israel WL label
f SIRIM...

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
1030 Optical drive
For access, remove this FRU:
• “1010 Battery pack” on page 33• “1020 Base cover” on page 34
Figure 3. Removal steps of optical drive
Remove the screw  1. Pull the optical drive out in the direction shown by 
 
arrow  2. 
12
Step
Screw (quantity) ColorTorque
1M2 × 3.5 mm, flat-head, nylok-coated ( 1)
ODD BKT to D to KB Black
1.5 ~ 2.0 kgf*cm
Remove the screw...