Lenovo B490 Hardware Maintenance Manual - Page 71

CPU, When installing, For models with a discrete thermal module

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When installing: Before you attach the thermal module to the computer, apply thermal grease, at an amount of 0.2 grams, on the part marked a and b as shown in the following illustration. Either too much or too less application of grease can cause a thermal problem due to imperfect contact with a component. For models with a discrete thermal module a b For models with an integrated thermal module a 1170 CPU For access, remove these FRUs in order: • "1010 Battery pack" on page 44 • "1020 Bottom slot cover" on page 44 • "1030 Optical drive" on page 45 • "1040 Memory modules" on page 46 • "1050 Hard disk drive assembly" on page 47 • "1060 PCI Express Mini Card for wireless LAN" on page 49 • "1070 mSATA solid state drive" on page 50 • "1080 Backup battery" on page 51 • "1090 Keyboard" on page 51 Chapter 7. Removing and replacing a FRU 65

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When installing:
Before you attach the thermal module to the computer, apply thermal grease, at an amount
of 0.2 grams, on the part marked
a
and
b
as shown in the following illustration. Either too much or too less
application of grease can cause a thermal problem due to imperfect contact with a component.
For models with a discrete thermal module
a
b
For models with an integrated thermal module
a
1170 CPU
For access, remove these FRUs in order:
•
“1010 Battery pack” on page 44
•
“1020 Bottom slot cover” on page 44
•
“1030 Optical drive” on page 45
•
“1040 Memory modules” on page 46
•
“1050 Hard disk drive assembly” on page 47
•
“1060 PCI Express Mini Card for wireless LAN” on page 49
•
“1070 mSATA solid state drive” on page 50
•
“1080 Backup battery” on page 51
•
“1090 Keyboard” on page 51
Chapter 7
.
Removing and replacing a FRU
65