Lenovo ThinkPad E555 (English) Hardware Maintenance Manual - Page 87

dc-in/USB-connector board with cable, on the part marked

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• Ensure that the connector is attached firmly. • Do not press the top of the fan cover and the fan hub. • Before you attach the fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams, on the part marked a as shown in the following illustrations. Either too much or too less application of grease can cause a thermal problem due to imperfect contact with a component. You need to peel the thin film off from the rubbers marked b . For models with a discrete thermal pipes a b For models with an integrated thermal pipes b 1140 dc-in/USB-connector board with cable For access, remove these FRUs in order: • "1020 Battery pack" on page 66 • "1030 Large bottom cover" on page 67 • "1050 Optical drive or optical-drive bay bezel" on page 69 • "1070 Hard disk drive assembly or solid-state drive assembly" on page 70 • "1110 Keyboard" on page 73 • "1120 Keyboard bezel assembly" on page 75 Chapter 9. Removing or replacing a FRU 81

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• Ensure that the connector is attached firmly.
• Do not press the top of the fan cover and the fan hub.
• Before you attach the fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams,
on the part marked
a
as shown in the following illustrations. Either too much or too less application of
grease can cause a thermal problem due to imperfect contact with a component. You need to peel the
thin film off from the rubbers marked
b
.
For models with a discrete thermal pipes
a
b
For models with an integrated thermal pipes
b
1140 dc-in/USB-connector board with cable
For access, remove these FRUs in order:
• “1020 Battery pack” on page 66
• “1030 Large bottom cover” on page 67
• “1050 Optical drive or optical-drive bay bezel” on page 69
• “1070 Hard disk drive assembly or solid-state drive assembly” on page 70
• “1110 Keyboard” on page 73
• “1120 Keyboard bezel assembly” on page 75
Chapter 9
.
Removing or replacing a FRU
81