Lenovo G580 Manual

Lenovo G480/G485/G580/G585/G780
67
Figure 11. Removal steps of system board (continued)
Remove the screws  . Then remove the card reader board in the direction 
shown by arrow  .
Lenovo G480/G485/G580/G585
Lenovo G780
StepScrew (quantity)ColorTorque
G480/G485/G580/G585: M2.5×4.0 mm, 
flat-head, nylok-coated (2)
G780: M2.5×4.0 mm, flat-head, 
nylok-coated (1)Black 2.0-2.5 kgfcm
j
k
1010
11
G770
1011
j 

Lenovo G480/G485/G580/G585/G780 Hardware Maintenance 
Manual
68
Figure 11. Removal steps of system board (continued)
Lenovo G480/G485/G580/G585
Remove the screw  . Then remove the USB board in the direction shown by 
arrow .
 
Remove the power jack in the direction shown by arrow  .
Lenovo G480/G485/G580/G585
StepScrew (quantity)ColorTorque
G480/G485/G580/G585: M2.5×4.0 mm, 
flat-head, nylok-coated (1)Black 2.0-2.5 kgfcm
jljm
1213
l
jn
14 

Lenovo G480/G485/G580/G585/G780
69
Figure 11. Removal steps of system board (continued)
Lenovo G780
When installing: Make sure that all the connectors are attached firmly.
G770
14 

Lenovo G480/G485/G580/G585/G780 Hardware Maintenance 
Manual
701120 LCD unit
For access, remove these FRUs in order:
 “1010 Battery pack” on page 34
 “1020 Dummy card” on page 35
 “1030 Optical drive/Hard disk drive (HDD)/Memory/Central processing 
unit/Mini PCI Express Card slot compartment cover” on page 36
 “1040 Hard disk drive” on page 39
 “1050 Optical drive” on page 43
 “1060 DIMM” on page 45
 “1070 PCI Express Mini Card for wireless LAN/WAN” on page 47
 “1080 Keyboard” on page 49
 “1090 Keyboard...

Lenovo G480/G485/G580/G585/G780
71
Figure 12. Removal steps of LCD unit (continued)
Lenovo G480/G485/G580/G585
Lenovo G780
StepScrew (quantity)ColorTorque
G480/G485/G580/G585: M2.5×6.0 mm, 
flat-head, nylok-coated (4)
G780: M2.5×5.0 mm, flat-head, 
nylok-coated (4) Black
white2.5-3.0 kgfcm
2.0-2.5 kgfcm
222
33
33
G770
22
33
33
c 

Lenovo G480/G485/G580/G585/G780 Hardware Maintenance 
Manual
72
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.
Remove the LCD unit...

Lenovo G480/G485/G580/G585/G780
73
Lenovo G780
4
4 

Lenovo G480/G485/G580/G585/G780 Hardware Maintenance 
Manual
741130 Fan assembly and Heat Sink assembly
For access, remove these FRUs in order:
 “1010 Battery pack” on page 34
 “1020 Dummy card” on page 35
 “1030 Optical drive/Hard disk drive (HDD)/Memory/Central processing 
unit/Mini PCI Express Card slot compartment cover” on page 36
 “1040 Hard disk drive” on page 39
 “1050 Optical drive” on page 43
 “1060 DIMM” on page 45
 “1070 PCI Express Mini Card for wireless LAN/WAN” on page 47
 “1080 Keyboard”...

Lenovo G480/G485/G580/G585/G780
75
Figure 13. Removal steps of fan assembly and heat sink assembly (continued)
Lenovo G480/G485/G580/G585
Remove the three screws   and the four screws  .
Lenovo G780
Remove the three screws   and the one screw  .
StepScrew (quantity)ColorTorque
M2.0×3.2 mm, flat-head, nylok-coated (3) Black 2.0-2.5 kgfcm
G480/G485/G580/G585: M2.0×3.0 mm, 
flat-head, nylok-coated (4)
G780: M2.0×3.0 mm, flat-head, 
nylok-coated (1)Black 1.5-2.0 kgfcm
bc
2223
3
3
abcc
22
3
2
b
c 

Lenovo G480/G485/G580/G585/G780 Hardware Maintenance 
Manual
76
Figure 13. Removal steps of fan assembly and heat sink assembly (continued)
Lift the fan assembly and heat sink assembly in the direction shown by arrow  .
Lenovo G480/G485/G580/G585
Lenovo G780
Note: Be careful not to damage the connector.
d
4
4