Lenovo B575e Laptop Hardware Maintenance Manual - Lenovo B575e - Page 75

Speaker assembly, Attention, When installing

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Lift the thermal fan assembly in the direction shown by the arrow 5 . Attention: Be careful not to damage the connector. 5 Attention: Do not handle the thermal fan assembly roughly. Improper handling can cause distortion or deformation and imperfect contact with components. When installing: Before you attach the thermal fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams, on the part marked a as shown in the above illustration. Either too much or too less application of grease can cause a thermal problem due to imperfect contact with a component. a 1160 Speaker assembly For access, remove these FRUs in order: • "1010 Battery pack" on page 44 • "1020 Bottom slot cover" on page 44 • "1030 Hard disk drive" on page 45 • "1040 Optical drive" on page 47 • "1050 Memory modules" on page 48 • "1060 PCI Express Mini Card for wireless LAN" on page 49 • "1070 Backup battery" on page 50 • "1080 Keyboard" on page 51 • "1090 Keyboard bezel" on page 54 • "1130 System board assembly" on page 63 • "1140 LCD unit" on page 65 Chapter 7. Removing and replacing a FRU 69

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Lift the thermal fan assembly in the direction shown by the arrow
5
.
Attention:
Be careful not to damage the connector.
5
Attention:
Do not handle the thermal fan assembly roughly. Improper handling can cause distortion or
deformation and imperfect contact with components.
When installing:
Before you attach the thermal fan assembly to the computer, apply thermal grease, at an
amount of 0.2 grams, on the part marked
a
as shown in the above illustration. Either too much or too less
application of grease can cause a thermal problem due to imperfect contact with a component.
a
1160 Speaker assembly
For access, remove these FRUs in order:
•
“1010 Battery pack” on page 44
•
“1020 Bottom slot cover” on page 44
•
“1030 Hard disk drive” on page 45
•
“1040 Optical drive” on page 47
•
“1050 Memory modules” on page 48
•
“1060 PCI Express Mini Card for wireless LAN” on page 49
•
“1070 Backup battery” on page 50
•
“1080 Keyboard” on page 51
•
“1090 Keyboard bezel” on page 54
•
“1130 System board assembly” on page 63
•
“1140 LCD unit” on page 65
Chapter 7
.
Removing and replacing a FRU
69