1090 Dc-In Cable Assembly - Lenovo ThinkPad X240 Hardware Maintenance Manual

When installing:
• Always wear fingerstalls when handling the fan assembly. Do not touch or hold any part of the fan
assembly with bare fingers.
• Before you attach the fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams,
on the part marked a
can cause a thermal problem due to imperfect contact with a component. If a fan assembly needs to
be reused, remove and reapply thermal grease.
• Do not touch the thermal grease.
• Do not press, touch, or rotate the fan impeller.
• Do not touch the fan inlet hole.
• Do not twist or pull the cable of the fan assembly.
• Do not apply pressure on the top and bottom covers of the fan assembly.
• Do not press the heat pipe. Hold both sides of the heat pipe if you need to take the fan assembly.
• Do not shake or drop the fan assembly.
• Ensure that the fan connector is attached firmly.
• Replace the fan assembly if you observe the following:
– The cover of the fan assembly is deformed or damaged.
– There is abnormal noise during rotation.

1090 dc-in cable assembly

For access, remove the following FRUs in order:
• "1010 External battery pack" on page 59
• "1020 Base cover assembly" on page 59
• "1080 Fan assembly" on page 67
in the following illustration. Either too much or too less application of grease
a
.
Chapter 9 Removing or replacing a FRU
69