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134 Chapter 4
USB Failure
If the USB fails, perform the following actions one at a time to correct the problem. Do not replace a non-
defective FRU:
Wireless Function Failure
If the WLAN fails, perform the following actions one at a time to correct the problem. Do not replace a non-
defective FRUs:
Start
Check USB
connector
surface
Swap M/B
OK
NG
Swap M/B
OK
Start
Check WL
antenna to WL
card
Re-assemble
the antenna to
WL card
OK
NG
Check
antenna
OK
Swap The
antenna
OK
NG
Swap M/B
Check WL
card
OK
Swap the WL
card
OK
NG