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Step 4.
Turn on the computer.
Step 5.
Determine whether the problem has been solved.
Step 6.
If the problem does not recur, reconnect the removed devices one at a time until you find the failing
FRU.
Step 7.
If the problem remains, replace the following FRUs one at a time (do not replace a nondefective
FRU):
a.
System board
b.
LCD assembly
38
ThinkPad X12 Detachable Gen 2 Hardware Maintenance Manual
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