Lenovo G580 Manual

							Lenovo G480/G485/G580/G585/G780
57
Figure 9. Removal steps of keyboard bezel (continued)
Remove the two screws  , and then remove the power board in the direction 
shown by arrow  .
Lenovo G480/G485/G580/G585
Lenovo G780
gh
8
77
77
8 
						

							Lenovo G480/G485/G580/G585/G780 Hardware Maintenance 
Manual
58
Lenovo G780
Remove the screw  , and then remove the power board in the directi o s h o w n   b y  
arrow   .
StepScrew (quantity)ColorTorque
M2.0×3.0 mm, flat-head, 
nylok-coated (2)Black 1.5-2.0 kgfcm
G780: M2.0×3.0 mm, flat-head,
nylok-coated (1)Black 1.5-2.0 kgfcm
ihj
10
9
g
i 
						

							Lenovo G480/G485/G580/G585/G780
59 1100 Speakers (Lenovo G480/G485/G580/G585)
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 bezel” on page 52
Figure 10. Removal steps of speakers (Lenovo G480/G485/G580/G585)
Remove the four screws  . Detach the speaker connector and FPC connector in 
the direction shown by arrows    . Then remove the speakers by lifting in the 
direction shown by arrows  .
StepScrew (quantity)ColorTorque
M2.5×5.7+2 mm, flat-head, 
nylok-coated (4)Black 2.0-2.5 kgfcm
abcd
1
1
11
4
43
32
a 
						

							Lenovo G480/G485/G580/G585/G780 Hardware Maintenance 
Manual
601110 System board
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 bezel” on page 52
 “1100 Speakers (Lenovo G480/G485/G580/G585)” on page 59Important notices for handling the system board:
When handling the system board, bear the following in mind.
 Be careful not to drop the system board on a bench top that has a hard 
surface, such as metal, wood, or composite.
 Avoid rough handling of any kind.
 In the whole process, make sure not to drop or stack the system board.
 If you put a system board down, make sure to put it only on a padded 
surface such as an ESD mat or conductive corrugated material. 
						

							Lenovo G480/G485/G580/G585/G780
61
Figure 11. Removal steps of system board
Lenovo G480/G485/G580/G585
Remove the three screws  . Unplug the LCD and Bluetooth connectors in the 
direction shown by arrows  . Detach the two FPC connectors in the direction 
shown by arrows  .
a
bc
3
111
2
2
3 
						

							Lenovo G480/G485/G580/G585/G780 Hardware Maintenance 
Manual
62
Lift the system board a little  , and then detach the power connector in the 
direction shown by arrow  .
Lenovo G780
Remove the three screws  . Unplug the speakers and the bluetooth connectors 
in the direction shown by arrows  . Detach the two FPC connectors in the 
direction shown by arrows  .d
e
5
6
a
bc
G770
11
1
22
3
3 
						

							
Lenovo G480/G485/G580/G585/G780
63
Remove two  screws  . Unplug the LCD connector and power jack connector 
in the direction shown by arrows    .
StepScrew (quantity)ColorTorque
M2.5×4.0 mm, flat-head, 
nylok-coated (3) Black 2.0-2.5 kgfcm
G780: M2.5×4.0 mm, flat-head, 
nylok-coated (2) Black 2.0-2.5 kgfcm
d
ef
5
446
a
d 
						

							Lenovo G480/G485/G580/G585/G780 Hardware Maintenance 
Manual
64
Figure 11. Removal steps of system board (continued)
Remove the system board in the direction shown by arrow  .
Lenovo G480/G485/G580/G585
Lenovo G780
g
7
G770
7 
						

							Lenovo G480/G485/G580/G585/G780
65
Figure 11. Removal steps of system board (continued)
Remove the screw  . Then remove the card reader board in the direction shown 
by arrow  .
Lenovo G480/G485/G580/G585
h
i
8
9
aa 
						

							Lenovo G480/G485/G580/G585/G780 Hardware Maintenance 
Manual
66
Figure 11. Removal steps of system board (continued)
Lenovo G780
When installing: When installing: When attaching the system board to the base 
cover, make sure that both of the audio jack and the microphone jack are 
attached to the holes on the base cover as shown in  . Improper placement of 
the switch or those jacks might cause a damage.
StepScrew (quantity)ColorTorque
M2.5×4.0 mm, flat-head, 
nylok-coated (1)Black 2.0-2.5 kgfcm
G77
0
aa
89
h