Acer Aspire 4540 Series - Bottom View

152 Chapter 4
Fingerprint Reader Failure
If the Fingerprint Reader fails, perform the following actions one at a time to correct the problem. Do not
replace a non-defective FRUs:
Thermal Unit Failure
If the Thermal Unit fails, perform the following actions one at a time to correct the problem. Do not replace a
non-defective FRUs:
Start
Reconnect the
cable to the
Mainboard
Check Fan power cable
Check Fan
Swap the Thermal
Module
CPU Heatink well
seated?
Seat it well
Check CPU Swap CPU
Swap Mainboard
OK
OK
OK
OK
NG
NG
NG
NG