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 3.0, 5Gb/s USB 2.0, 480Mb/s BT: USB2.0, 480Mb/s Card Reader: SD3.0, 50Mb/s VGA: VESA  1.1 , Integrated VGA support up to 1920x1200@ 60Hz & 30bpp  SMBus 2.0, 100KHz LPC 1.1  HD Audio: 1.5V bus SPI: up to 100 MHz 
• G40-70:  1600MHz DDR3 SDRAM (PC3-12800S)  PCI Express bus  DMI
• G40-70m/Z40-70/Z40-75:   GPU: PCIe 2.0, 5GT/s WLAN: PCIe 1.0, 2.5GT/s RAM: DDR3L, 1600MT/s 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 3.0, 5Gb/s USB 2.0, 480Mb/s BT: USB2.0, 480Mb/s Card Reader: SD3.0, 50Mb/s VGA: DP to VGA (G40-70m/Z40-70) VGA: VGA  (Z40-75m) SMBus 2.0 LPC 1.1 HDA SPI  
						

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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 × 1• HDMI port × 1• USB 2.0 port × 2, USB 3.0 port × 1• 2 in 1 slot × 1 (SD/MMC)Audio• 1/8" Combo audio jack• 1.5 W speakers × 2• Array MicrophoneEthernet (on the 
system board) • 10/100/1,000 Mbps
Bluetooth 
wireless • Combined in combo card
Keyboard• 6 rows Lenovo KeyboardTouchpad • Multi-touch typeIntegrated 
camera• HD (720p)/0.3 M
Battery• 4 cell, 2,200 mAh / 2,800 mAhAC adapter• 20 V, 65 W or 45 WPre-installed 
operating 
system • Windows 8.1  
						

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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 than 20% 
charge.
On (solid amber) DischargingThe battery has between 5% and 
20% charge.
Blinking slowly 
(white) ChargingThe battery has between 20% 
and 80% charge. When the 
battery reaches 80% charge, the 
light will stop blinking. However, 
charging will continue until the 
battery is fully charged.
Blinking slowly 
(amber) ChargingThe battery has less than 20% 
charge. When the battery charge 
reaches 20%, the blinking color 
will change to white.
Blinking quickly 
(amber) Charging/
Discharging The battery has less than 5% 
charge.  
						

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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 active apps.
:Turns on/off the backlight of the LCD screen.
:Toggles the display between the computer and an external 
device.
:Decreases display brightness.
:Increases display brightness.  
						

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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 loose, even with shock or vibration.
• They are harder to tighten.
• Each one should be used only once.
Do the following when you service this machine: 
• Keep the screw kit in your tool bag.
• Carefully remove screws for reuse when replacing FRUs.
• Use a torque screwdriver if you have one.
Tighten screws as follows:
• Plastic to plastic
 Turn an additional 90° after the screw head touches the surface of the plastic part:more than 90°
(Cross-section)
• Logic card to plastic 
 Turn an additional 180° after the screw head touches the surface of the logic card: more than 180°
(Cross-section)
• Torque driver 
 If you have a torque screwdriver , refer to the “Torque” column for each step.
• Make sure that you use the correct screws. If you have a torque screwdri\
ver, 
tighten  all  screws  firmly  to  the  torque  shown  in  the  table.  Carefully remove 
screws for reuse when replacing FRUs. Make sure that all screws are 
tightened firmly.
• Ensure torque screwdrivers are calibrated correctly following country 
specifications.  
						

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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 “FRU replacement notices” on page 31 .
3. Begin by removing any FRUs that have to be removed before the failing FRU. Any of such FRUs are listed at the top of the page. Remove them in 
the order in which they are listed.
4. Follow the correct sequence in the steps to remove the FRU, as given in the figures by the numbers in square callouts.
5. When turning a screw to replace an FRU, turn it in the direction as given by the arrow in the figure.
6. When removing the FRU, move it in the direction as given by the arrow in the figure.
7. To put the new FRU in place, reverse the removal procedures and follow any of the notes that pertain to replacement. For information about 
connecting and arranging internal cables, see  “Locations” on page 66.
8. When replacing an FRU, use the correct screw as shown in the procedures.
 DANGER
Before	removing	any 	FRU, 	turn 	of f 	the 	computer , 	unplug 	all 	power 	cords 	from	electrical
	outlets, 	remove 	the 	battery 	pack, 	and 	then 	disconnect 	any 	of 	the	interconnecting

	 cables.
Attention:  After replacing an FRU, do not turn on the computer until you have 
made sure that all screws, springs, and other small parts are in place and none 
are loose inside the computer. Verify this by shaking the computer gently and 
listening  for  rattling  sounds.  Metallic  parts  or  metal  flakes  can  cause  electrical 
short circuits.
Attention:  The system board is sensitive to, and can be damaged by, 
electrostatic discharge. Before touching it, establish personal grounding by 
touching a ground point with one hand or using an electrostatic discharge (ESD) 
strap (P/N 6405959) to remove potential shock reasons.
Notes:
•	 The	following 	procedures 	about 	removing 	and 	replacing 	FRUs 	are 	the 	same 	for 	the 	Lenovo	G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75.
•	 The	illustrations	u sed	i n	t his 	se ction	a re	o f	t he	L enovo	G4 0-70,	u nless 	o therwise	stated.  
						

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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 raise the battery pack in the indicated 
direction  4 to remove it.
3
1
4
4
2  
						

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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 BT  labelg SIRIM WL  label
h WL label for US/CA/TW/Indonesia
i BT label for US/CA/TW/Indonesiaj KCC label
k BIS label
l Windows 8  OS label
For some models, you also need to apply one or two FCC labels. Check the 
old base cover; if it has one or two FCC labels, find duplicates of them in the 
label kit and apply them to the new base cover. 
For the location of each label, refer to the following figure:
D
CC
EFLMG
HI
JK
N  
						

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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 
3, then remove the optical drive bracket in the direction 
shown by arrow  4.
3
4
Step
Screw (quantity) ColorTorque
3M2 × 3.5 mm, flat-head, nylok-coated (1)
ODD BKT to ODD  Black
1.5 ~ 2.0 kgf*cm
Carefully remove the optical drive bezel in the direction shown by arrow\
 
5.
5