Lenovo 20YG00CAIX Hardware Maintenance Manual page 47

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b. Devices attached to the docking station or the port replicator
c. Printer, mouse, and other external devices
d. Built-in battery
e. Hard disk drive, hybrid drive, or solid-state drive
f. External diskette drive
g. Memory module
h. 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
.
Chapter 4
Related service information
41

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