Lenovo G570 Service Manual

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Lenovo G470/G475/G570/G575
1040 Hard disk drive (HDD)/Memory/CPU (Central processing 
unit)/Mini PCI ExpressCard slot compartment cover 
For access, remove this FRU: 
• “1010 Battery pack” on page 34
Figure  4.  Removal  steps  of  HDD/Memory/CPU/Mini  PCI  ExpressCard  slot compartment cover 
Note: Loosen the screws 1, but do not remove them.  Remove the HDD/Memory/CPU/Mini PCI ExpressCard slot compartment cover  in the direction shown by arrow 2.
111
11
2 
						

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Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
1050 Hard disk drive 
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
Attention: 
•	 Do	not 	drop 	the 	hard 	disk 	drive 	or 	apply 	any 	physical 	shock 	to 	it.   The  hard 
disk  drive  is  sensitive  to  physical  shock.  Improper  handling  can  cause  damages 
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 is in suspend mode.
Figure 5. Removal steps of Hard disk drive 
Remove two screws 1. Pull the HDD bracket in the direction shown by arrow 2. Take out the hard disk drive secured in a metal frame 3.
1111
1111
2 
						

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Lenovo G470/G475/G570/G575
3
StepScrew (quantity)ColorTorque
1M2.0 × 4 mm, flat-head, nylon-coated (2) Black2.0kgfcm 
When installing: Make sure that the HDD connector is attached firmly.  
						

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Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
1060 DIMM
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 6. Removal steps of DIMM 
Release  the  two  latches  on  both  edges  of  the  socket  at  the  same  time  in  the direction shown by arrows 1, and then unplug the DIMM in the direction shown by arrow 2.
1
1
2
Note:  If  only  one  DIMM  is  used  on  the  computer  you  are  servicing,  the  card must  be  installed  in  SLOT-0  ( a  :  lower  slot),  but  not  in  SLOT-1  ( b  :  upper slot).
a
b
When installing: Insert the notched end of the DIMM into the socket. Push the DIMM firmly, and pivot it until it snaps into the place. Make sure that it is firmly fixed in the slot and difficult to be moved. 
						

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Lenovo G470/G475/G570/G575
1070 Fan assembly and Heat Sink assembly
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 7. Removal steps of fan assembly and heat sink assembly
Note: Remove three screws 1 and four spring screws 2.
Unplug the connector in the direction shown by arrow 3.
3
1
11
22
22
When  installing:  Make  sure  that  the  fan  connector  is  attached  firmly  to  the system board. 
StepScrew (quantity)ColorTorque
1M2.0 × 4 mm, flat-head, nylon-coated (3) Silver2.0kgfcm
2M2.0 × 3.2 mm, with spring, nylon-coated (4)  Black2.0kgfcm 
						

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Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
Figure 7. Removal steps of fan assembly and heat sink assembly (continued)
Lift the fan assembly and heat sink assembly in the direction shown by arrow 4. Be careful not to damage the connector.
4
Attention:  Do  not  handle  the  heat  sink  assembly  roughly.  Improper  handling can cause distortion or deformation and imperfect contact with components. 
						

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Lenovo G470/G475/G570/G575
Figure 7. Removal steps of fan assembly and heat sink assembly (continued)
a
When installing: 
Before  you  attach  the  fan  assembly  to  the  computer,  apply  thermal  grease, • at  an  amount  of  0.2  grams,  to  the a  part  shown  in  the  figure  above.  Either too much or too less grease application can cause a thermal problem due to imperfect contact with a component.  
						

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Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
1080 CPU
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
• “1070 Fan assembly and Heat Sink assembly” on page 41
Attention:  CPU  is  extremely  sensitive.  When  you  service  the  CPU,  avoid  any kind of rough handling.
Figure 8. Removal steps of CPU 
Rotate the head of the screw in the direction shown by arrow 1 to release the lock, then remove the CPU in the direction shown by arrow 2.
22
a
b
1
When installing: Place the CPU on the CPU socket in the direction shown by arrow a, and then rotate the head of the screw in the direction shown by arrow b to secure the CPU. 
						

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Lenovo G470/G475/G570/G575
1090 PCI Express Mini Card for wireless LAN
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 9. Removal steps of PCI Express Mini Card for wireless LAN
1
2222
Disconnect  the  two  wireless  LAN  cables  (black,  white)  in  the  direction  shown by arrows 1, and then remove the screw 2.
StepScrew (quantity)ColorTorque
2M2.0 × 3 mm, flat-head, nylon-coated (1)Black2.0kgfcm
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 arrows. 
						

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Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
Notes: wireless LAN card has 2 cables in step 1.
  wireless LAN card in some models may have 3 cables in step 1.
Figure 9. 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  into  the  jack  labeled 1,  and  the  white  cable  into  the  jack labeled 2 on the card.