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:
Start
Check IO/B
to M/B
CONN
OK
Check IO/B
OK
NG
OK
NG
the IO/B
CONN to M/B
Swap IO/B
Swap M/B
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
OK 
Check WL
antenna to WL card
OK
Check
antenna
OK
Check WL
card
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| NG |
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| the antenna to |
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| WL card |
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| OK |
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| Swap The |
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| NG |
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| antenna |
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| OK |
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| Swap the WL |
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| NG |
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| card |
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Swap M/B
128 | Chapter 4 |
