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36
Jack PC Hardware User Manual - Training Department
Version 0506
7.3 LAN Troubleshooting flow
If power is OK through external power supply but still there is no LINK you should suspect the
wiring. The following flow will guide you through the troubleshooting procedure in such a
case:
Check at the far end that the
port is connected to the switch
Device powered but NO
Link LED
TIA-568?
See Figure 6.2
Finished
Yes
Problem resolved?
B
Something
Else
Check at the far end if
TIA-568-A or B is used
Check Flex-Jack
Terminal block label
for proper
B
wiring
Check Flex-Jack
Terminal block label
for proper
A
wiring
Check Flex-Jack
Terminal block
according to non-
standard wiring
table
Fix wiring if needed
No
A
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