Lenovo G70 Manual

							Lenovo G70-70/G70-80/Z70-80
57
Figure 11. Removal steps of system board (continued)
Remove the system board in the direction shown by arrow  .
When installing: When attaching the system board to the base cover, adjust the 
placement of the USB as shown in  , and make sure that both of the USB ports 
are attached to the holes on the base cover as shown in  . Improper placement 
of the ports might cause a damage.
g
aa
g 
						

							Lenovo G70-70/G70-80/Z70-80 Hardware Maintenance Manual
581120 LCD unit
For access, remove these FRUs in order:
 “1010 Battery pack” on page 34
 “1020 Dummy card” on page 35
 “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot 
compartment cover” on page 36
 “1040 Hard disk drive” on page 37
 “1050 DIMM” on page 40
 “1060 PCI Express Mini Card for wireless LAN/WAN” on page 41
 “1070 Optical drive” on page 43
 “1080 Fan assembly” on page 45
 “1090 Keyboard” on page 46
 “1100 Keyboard bezel” on page 50
Figure 12. Removal steps of LCD unit
Z70-80: Remove the screws  .
StepScrew (quantity)ColorTorque
M2.5 × 5 mm, flat-head, nylok-coated (4)  White  3.0 kgfcm
a
a
aa
a
a 
						

							Lenovo G70-70/G70-80/Z70-80
59
Figure 12. Removal steps of LCD unit (continued)
G70-70/G70-80: Release the antenna cables from the cable guides in the direction 
shown by arrows  . Remove the screws  .
When installing:
 Route the antenna cables along the cable guides. As you route the cables, 
make sure that they are not subjected to any tension. Tension could cause the 
cables to be damaged by the cable guides, or a wire to be broken.
 Make sure that the LCD connector is attached firmly and make sure that you 
do not pinch the antenna cables when you attach the LCD assembly. Route 
the LCD cable along the cable guides.
StepScrew (quantity)ColorTorque
M2.5 × 5 mm, flat-head, nylok-coated (4)  White  3.0 kgfcm
ab
b
bb
b
a
a
a
a 
						

							Lenovo G70-70/G70-80/Z70-80 Hardware Maintenance Manual
60
Figure 12. Removal steps of LCD unit (continued)
Remove the LCD unit in the direction shown by arrows  .
c
c
c 
						

							Lenovo G70-70/G70-80/Z70-80
61 1130 Heat Sink assembly
For access, remove these FRUs in order:
 “1010 Battery pack” on page 34
 “1020 Dummy card” on page 35
 “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot 
compartment cover” on page 36
 “1040 Hard disk drive” on page 37
 “1050 DIMM” on page 40
 “1060 PCI Express Mini Card for wireless LAN/WAN” on page 41
 “1070 Optical drive” on page 43
 “1080 Fan assembly” on page 45
 “1090 Keyboard” on page 46
 “1100 Keyboard bezel” on page 50
 “1120 LCD unit” on page 58
Figure 13. Removal steps of heat sink assembly
Z70-80: Remove the screws  .
StepScrew (quantity)ColorTorque
M2.0 × 3 mm, flat-head, nylok-coated (6) Black 2.0 kgfcm
a
a
a
a
a
a
a
a 
						

							Lenovo G70-70/G70-80/Z70-80 Hardware Maintenance Manual
62
Figure 13. Removal steps of heat sink assembly (continued)
G70-70/G70-80: Remove the screws  .
StepScrew (quantity)ColorTorque
M2.0 × 3 mm, flat-head, nylok-coated (4) Black 2.0 kgfcm
a
aa
a
a
a 
						

							Lenovo G70-70/G70-80/Z70-80
63 1140 Base cover and LED board
For access, remove these FRUs in order:
 “1010 Battery pack” on page 34
 “1020 Dummy card” on page 35
 “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot 
compartment cover” on page 36
 “1040 Hard disk drive” on page 37
 “1050 DIMM” on page 40
 “1060 PCI Express Mini Card for wireless LAN/WAN” on page 41
 “1070 Optical drive” on page 43
 “1080 Fan assembly” on page 45
 “1090 Keyboard” on page 46
 “1100 Keyboard bezel” on page 50
 “1110 System board” on page 54 
						

							Lenovo G70-70/G70-80/Z70-80 Hardware Maintenance Manual
64
Figure 14. Removal steps of base cover and LED board
Loosen the screw  , then remove the USB and audio board.
When installing: Make sure that the power connector is attached firmly.
StepScrew (quantity)ColorTorque
M2.5 × 4 mm, flat-head, nylok-coated (1) Black 3.0 kgfcm
a
a
c 
						

							Lenovo G70-70/G70-80/Z70-80
65
Figure 14. Removal steps of base cover and LED board (continued)
Remove the power assembly in the direction shown by arrow  .
Loosen screw  , then remove the power board.
StepScrew (quantity)ColorTorque
M2.5 × 4 mm, flat-head, nylok-coated (1) Black 3.0 kgfcm
a
a
a
a
a 
						

							Lenovo G70-70/G70-80/Z70-80 Hardware Maintenance Manual
66
Figure 14. Removal steps of base cover and LED board (continued)
Loosen the two screws  , then remove the LED board.
Loosen screw  , then remove the optical disk drive switch board.
StepScrew (quantity)ColorTorque
M2.0 × 3 mm, flat-head, nylok-coated (2) Black 2.0 kgfcm
StepScrew (quantity)ColorTorque
M2.5 × 4 mm, flat-head, nylok-coated (1) Black 3.0 kgfcm
a
a
a
a
a
a
a