Lenovo G570 Service Manual

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Lenovo G470/G475/G570/G575
1100 Keyboard
For access, remove these FRUs in order:
• “1010 Battery pack” on page 34
• “1040  Hard  disk  drive  (HDD)/Memory/CPU  (Central  processing  unit)/Mini PCI ExpressCard slot compartment cover ” on page 37
Figure 10. Removal steps of keyboard  
Remove the screws 1, 2 on the bottom.
1
1
2
StepScrew (quantity)ColorTorque
1M2.5 × 8 mm, flat-head, nylon-coated (2)Black2.0kgfcm
2M2.5 × 4 mm, flat-head, nylon-coated (1)Black2.0kgfcm 
						

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Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
Figure 10. Removal steps of keyboard (continued)
Lift  the  keyboard  a  little 3,  unlock  the  FPC  connector  and  then  detach  the connector in the direction shown by arrows 4 5. 
3
5
4
When installing: Make sure that the FPC connector is attached firmly and then lock the FPC connector.  
						

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Lenovo G470/G475/G570/G575
1110 Keyboard bezel
For access, remove these FRUs in order:
• “1010 Battery pack” on page 34
• “1030 Optical drive” on page 36
• “1040  Hard  disk  drive  (HDD)/Memory/CPU  (Central  processing  unit)/Mini PCI ExpressCard slot compartment cover ” on page 37
• “1050 Hard disk drive ” on page 38
• “1100 Keyboard” on page 47
Figure 11. Removal steps of keyboard bezel 
Remove  thirteen  screws 1,  two  screws 2,  two  screws 3  and  four  screws 4 on the bottom.
34444
111
111
1
11
1
1
1
13
2
2
StepScrew (quantity)ColorTorque
1M2.5 × 8 mm, flat-head, nylon-coated (13)Black2.0kgfcm 
2M2.0 × 5 mm, flat-head, nylon-coated (2)Black2.0kgfcm 
3M2.0 × 3 mm, flat-head, nylon-coated (2)Black2.0kgfcm
4M2.0 × 2 mm, flat-head, nylon-coated (4)Black2.0kgfcm 
						

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Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
Figure 11. Removal steps of keyboard bezel (continued)
Remove one screw 5 and detach three FPC connectors in the direction shown 
by arrows 6.
6
65
StepScrew (quantity)ColorTorque
5M2.5 × 8 mm, flat-head, nylon-coated (1)Black2.0kgfcm 
When installing:  Make sure that all the FPC connectors are attached firmly. 
						

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Lenovo G470/G475/G570/G575
Figure 11. Removal steps of keyboard bezel (continued) 
Remove the keyboard bezel in the direction shown by arrows 7.
7 
						

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Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
1120 Power board and touch inductive panel
For access, remove these FRUs in order:
• “1010 Battery pack” on page 34
• “1030 Optical drive” on page 36
• “1040  Hard  disk  drive  (HDD)/Memory/CPU  (Central  processing  unit)/Mini PCI ExpressCard slot compartment cover ” on page 37
• “1050 Hard disk drive ” on page 38
• “1100 Keyboard” on page 47
• “1110 Keyboard bezel” on page 49
Figure 12. Removal steps of power board and touch inductive panel  
Remove two screws 1 and remove the power board 2. 
2
1
1
Notes: The touch inductive panel is fixed on the keyboard bezel.
StepScrew (quantity)ColorTorque
1M2.0 × 3 mm, flat-head, nylon-coated (2)Black2.0kgfcm  
						

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Lenovo G470/G475/G570/G575
1130 System board
Important 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.
For access, remove these FRUs in order: 
• “1010 Battery pack” on page 34
• “1020 Dummy card” on page 35
• “1030 Optical drive” on page 36
• “1040  Hard  disk  drive  (HDD)/Memory/CPU  (Central  processing  unit)/Mini PCI ExpressCard slot compartment cover ” on page 37
• “1050 Hard disk drive ” on page 38
• “1060 DIMM” on page 40
• “1070 Fan assembly and Heat Sink assembly” on page 41
• “1090 PCI Express Mini Card for wireless LAN” on page 45
• “1100 Keyboard” on page 47
• “1110 Keyboard bezel” on page 49
Figure 13. Removal steps of system board
Unplug the LCD connector and detach two connectors in the direction shown by arrows 1.
 1
1
When installing: Make sure that the connectors are attached firmly. 
						

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Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
Figure 13. Removal steps of system board (continued)
Remove five screws 2 and detach a connector in the direction shown by arrow 3.  
2
22
22
32
22
3
When installing:  Make sure that the connector is attached firmly.
StepScrew (quantity)ColorTorque
2M2.5 × 4 mm, flat-head, nylon-coated (5)Black2.0kgfcm 
						

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Lenovo G470/G475/G570/G575
Figure 13. Removal steps of system board (continued)
Remove the system board in the direction shown by arrow 4.
b
aa
4
When  installing:  When  attaching  the  system  board  to  the  base  cover,  adjust the  placement  of  the  wireless  radio  switch  as  shown  in b,  and  make  sure  that both of the audio jack and the microphone jack are attached to the holes on the base  cover  as  shown  in a.  Improper  placement  of  the  switch  or  those  jacks might cause a damage. 
						

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Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
1140 LCD unit
For access, remove these FRUs in order: 
• “1010 Battery pack” on page 34
• “1020 Dummy card” on page 35
• “1030 Optical drive” on page 36
• “1040  Hard  disk  drive  (HDD)/Memory/CPU  (Central  processing  unit)/Mini PCI ExpressCard slot compartment cover ” on page 37
• “1050 Hard disk drive ” on page 38
• “1060 DIMM” on page 40
• “1070 Fan assembly and Heat Sink assembly” on page 41
• “1090 PCI Express Mini Card for wireless LAN” on page 45
• “1100 Keyboard” on page 47
• “1110 Keyboard bezel” on page 49
• “1130 System board” on page 53
Figure 14. Removal steps of LCD unit 
Pull  out  the  two  antenna  cables  from  the  guide  hole  in  the  direction  shown  by arrows 1  and  release  them  from  the  cable  guides  in  the  direction  shown  by arrows 2. Remove four screws 3. 
1
1