SYMPTOM-TO-FRU INDEX
5. Determine if the problem has changed.
6. If the problem does not recur, reconnect the removed
devices one at a time until you find the failing FRU.
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
c. DC-DC card
d. Video card
e. CPU card
ThinkPad 770, 770E, 770X and 770Z 67
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