User's Manual

5-26
5.11 TMN-SPECIFIC TROUBLESHOOTING
Refer to Table 5 - 4. The red ALM LED on the front panel of the TMN Interface module
and the alarm on the radio USI status and alarm screen are the first indication of a fault.
The ALM LED on the front panel of the TMN Interface module lights for any module
fault. The LED remains lit during module reboot and also after reboot if reboot is not
completed satisfactorily.
Table 5 - 4 Troubleshooting Using TMN Interface Module Indicators
LED Indication Probable Cause Corrective Action
ALM Steady
Red
1. Module failure
2. Module reboot in progress (sev-
eral seconds to reboot)
3. Module reboot failed.
1. Replace module
2. Wait several seconds for reboot to
complete.
3. Attempt reboot.
Ethernet
1, 2,
and/or 3
Blinking
Yellow
Network with too much traffic (colli-
sions occurring). Some collisions
are normal in any network.
Wait for situation to clear. If collisions
continue (severe occurrence), trouble
-
shoot network.
Ethernet
1, 2,
and/or 3
Not
Steady
Green
When First
Connected
1. Cable is disconnected/
broken
1. Connect/repair cable.
2. Cable/port mismatch 2. Check application matches cable.
Straight cable instead of crossover
cable, etc.
3. Rate mismatch. Far end equip-
ment does not support 10Base/T.
3. Check far end equipment supports
10Base/T.
PPP Not
Steady
Green
When First
Connected
1. Cable is disconnected/
broken.
1. Connect/repair cable.
2. Cable/port mismatch 2. Check application matches cable.
Straight cable instead of crossover
cable, etc.
PPP Yellow Local end is receiving data but PPP
disabled locally
Check local provisioning for PPP port
enabled.