Lenovo ThinkPad X230 Tablet Manual page 98

Loosen the screws 4 in ascending alphabetic order as illustrated. When attaching the thermal fan assembly,
secure the screws in reverse order.
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
can cause a thermal problem due to imperfect contact with a component. You need to peel the thin film
b
off from the rubber .
Attention: The following components soldered on the system board are extremely sensitive. When you
service the system board, avoid any kind of rough handling.
a
Platform Controller Hub (PCH)
b
Microprocessor
c
Accelerometer chip for the hard disk drive Active Protection System™
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Hardware Maintenance Manual
a as in the following illustration. Either too much or too less application of grease