Lenovo G40 Manual

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Lenovo G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75
1040 Hard disk drive
For access, remove these FRUs in order:
• “1010 Battery pack” on page 33• “1020 Base cover” on page 34
Attention: 
•	 Do	not	dr op 	the 	hard 	disk 	drive 	or	apply 	any 	physical 	shock 	to 	it. 	The 	hard	disk
	drive 	is 	sensitive 	to 	physical 	shock. 	Improper 	handling 	can 	cause 	damage 	and 	
permanent

	 loss 	 of 	 data.
•	 Before
	
removing
 	
the
 	
drive,
 	
suggest
 	
the
 	
customer
 	
to
 	
backup
 	
all
 	
the
 	
information
 	
on
 	
it

	 if 	 possible.
•	 Never
	 remove 	 the 	 drive 	 while 	 the 	 system 	 is 	 operating 	 or 	 in 	 suspend 	 mode.
Figure 4. Removal steps of hard disk drive
Remove the screws  1. Detach the HDD connector and then remove the hard 
disk drive from the slot in the direction shown by arrow  2.
1112
Step
Screw (quantity) ColorTorque
1M2 × 3.5 mm, flat-head, nylok-coated (3)
HDD BKT to D  Black
1.5 ~ 2.0 kgf*cm
When installing:  Make sure that the HDD connector is attached firmly.   
						

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
Figure 4. Removal steps of hard disk drive (continued)
Remove the screws  3 and detach the metal frame from the hard disk drive. 
3
3
33
Step
Screw (quantity) ColorTorque
3M2 × 3.5 mm, flat-head, nylok-coated (4)  
HDD BKT to HDD Black
1.5 ~ 2.0 kgf*cm  
						

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Lenovo G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75
1050 PCI Express Mini Card for wireless LAN
For access, remove these FRUs in order:
• “1010 Battery pack” on page 33• “1020 Base cover” on page 34
Figure 5. Removal steps of PCI Express Mini Card for wireless LAN
Disconnect the two wireless LAN cables (black, grey)  1, and then 
remove the 
screw  2.
2
11
In step 1 , unplug the jacks by using the removal tool antenna RF connector 
 
(P/N:  08K7159),  or  pick  up  the  connectors  with  your  fingers  and  gently  unplug 
them in the direction shown by the arrows.
Notes:
 The wireless LAN card has 2 cables in step 1 .
 The wireless LAN card in some models might have 3 cables in step 1.
Step
Screw (quantity) ColorTorque
2M2 × 3.5 mm, flat-head, nylok-coated (1)  
NGFF to MB Black
1.5 ~ 2.0 kgf*cm  
						

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
Figure 5. Removal steps of PCI Express Mini Card for wireless LAN (continued) 
Remove the card in the direction shown by arrow  3.
3
When installing:
• In models with a wireless LAN card that has two antenna connectors, plug 
the black cable (1st) (MAIN) into the jack labeled 
MAIN, and the grey cable 
(2nd) (AUX) into the jack labeled  AUX on the card. 
• In models with a wireless LAN card that has three antenna connectors, plug 
the black cable (1st) (MAIN) into the jack labeled  1, the grey cable (3rd) into 
the jack labeled  3, and the white cable (2nd) (AUX) into the jack labeled  2 on 
the card.  
						

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Lenovo G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75
1060 DIMM
For access, remove these FRUs in order: 
• “1010 Battery pack” on page 33• “1020 Base cover” on page 34
Figure 6. Removal steps of DIMM 
Release the two latches on both edges of the socket at the same time in the 
directions shown by arrows  1, and then unplug the DIMM in the direction 
shown by arrow  2.
11
2
When installing: Insert the notched end of the DIMM into the socket. Push the 
DIMM firmly, and pivot it until it snaps into place. Make sure that it is firmly fixed 
in the slot and is difficult to move.
Note:  When replacing the memory is completed, you need to restart the 
computer after the first reboot.  
						

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
1070 Fan assembly
For access, remove these FRUs in order: 
• “1010 Battery pack” on page 33• “1020 Base cover” on page 34
Figure 7. Removal steps of fan assembly 
Unplug the fan connector in the direction shown by arrow  1. Then remove the 
screws  2.
222
1
Note: Be careful not to damage the connector.
Step
Screw (quantity) ColorTorque
2M2 × 3.5 mm, flat-head, nylok-coated (3)  
FAN to C Black
1.5 ~ 2.0 kgf*cm
When installing:  Make sure that the connector is attached firmly.  
						

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Lenovo G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75
Figure 7. Removal steps of fan assembly (continued) 
Remove the fan 3.
3  
						

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
1080 Keyboard
For access, remove these FRUs in order:
• “1010 Battery pack” on page 33
• “1020 Base cover” on page 34
• “1070 Fan assembly” on page 42
Figure 8. Removal steps of keyboard
Remove the screws  1.


Step
Screw (quantity) ColorTorque
1M2 × 3.5 mm, flat-head, nylok-coated ( 3)  
KB + 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
Figure 8. Removal steps of keyboard (continued) 
Insert the screwdriver into the bottom hole  2. Then pull the keyboard out of the 
keyboard bezel  3. 
  
						

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G40-30/G40-45/G40-70/G40-70m/Z40-70/Z40-75 Hardware Maintenance Manual
Figure 8. Removal steps of keyboard (continued) 
Lift the keyboard slightly  4. Detach the connectors in the directions shown by 
arrows  5 and 
6. Then remove the keyboard.
4
5
6
When installing: Make sure that the FPC connector is attached firmly.