Lenovo B470e Lenovo B470/B470e Hardware Maintenance Manual - Page 65

CPU, Attention, When installing

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Attention: Do not handle the heat sink assembly roughly. Improper handling can cause distortion or deformation and imperfect contact with components. ab When installing: Before you attach the fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams, on the part marked a and b 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. 1130 CPU For access, remove these FRUs in order: • "1010 Battery pack" on page 44 • "1020 Dummy card" on page 44 • "1030 Bottom slot cover" on page 45 • "1040 Hard disk drive" on page 45 • "1050 Optical drive" on page 46 • "1060 Memory modules" on page 47 • "1070 PCI Express Mini Card for wireless LAN/WAN" on page 48 • "1080 Keyboard" on page 49 • "1090 Keyboard bezel" on page 51 • "1100 System board assembly" on page 53 • "1120 Fan assembly and heat sink assembly" on page 57 Attention: The CPU is extremely sensitive. When you service the CPU, avoid any kind of rough handling. Chapter 7. Removing and replacing a FRU 59

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Attention:
Do not handle the heat sink assembly roughly. Improper handling can cause distortion or
deformation and imperfect contact with components.
a
b
When installing:
Before you attach the fan assembly to the computer, apply thermal grease, at an amount
of 0.2 grams, on the part marked
a
and
b
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.
1130 CPU
For access, remove these FRUs in order:
•
“1010 Battery pack” on page 44
•
“1020 Dummy card” on page 44
•
“1030 Bottom slot cover” on page 45
•
“1040 Hard disk drive” on page 45
•
“1050 Optical drive” on page 46
•
“1060 Memory modules” on page 47
•
“1070 PCI Express Mini Card for wireless LAN/WAN” on page 48
•
“1080 Keyboard” on page 49
•
“1090 Keyboard bezel” on page 51
•
“1100 System board assembly” on page 53
•
“1120 Fan assembly and heat sink assembly” on page 57
Attention:
The CPU is extremely sensitive. When you service the CPU, avoid any kind of rough handling.
Chapter 7
.
Removing and replacing a FRU
59