Lenovo ThinkPad W700ds Hardware Maintenance Manual page 58

i. PC Cards
4. Turn on the computer.
5. Determine whether the problem has been solved.
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
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ThinkPad W700, W700ds, W701, and W701ds Hardware Maintenance Manual