Unit installation

FCD-E1 Installation and Operation Manual Chapter 6 Troubleshooting and Diagnostics
Troubleshooting 6-15
6.4 Troubleshooting
In case a problem occurs, check the displayed alarm messages as described in
Table 6-3. If the problem cannot be corrected by performing the actions listed in
Table 6-3, use Table 6-4 to identify the trouble symptoms. Perform the actions listed
under “Corrective Measures” in the order given, until the problem is corrected.
Table 6-4. Troubleshooting Chart
Nº Trouble Symptoms Probable Cause Corrective Measures
1 The FCD-E1 is “dead” 1. No power Check that both ends of the power cable are
connected properly.
2. Blown fuse (AC
powered FCD-E1 only)
Disconnect the AC power cable from both
ends and replace with fuse of proper rating.
3. Defective FCD-E1 Replace the FCD-E1.
2 Local FCD-E1 reports local main
link sync loss
1. External problem Activate the local analog loopback on the
main link. Check that the local FCD-E1
MAIN LOC SYNC LOSS indicator turns OFF.
If the indicator is OFF, the problem is external.
2. Defective FCD-E1 Perform power-up self-test and replace the
FCD-E1 if defective.
3 Local FCD-E1 reports local
sublink sync loss
1. External problem Activate the remote analog loopback on the
sublink. Check that the local FCD-E1 SL LOC
SYNC LOSS indicator is OFF. If the indicator
is OFF, the problem is external.
2. Defective FCD-E1 Perform power-up self-test and replace the
FCD-E1 if defective.
4 Local user connected to one of
the FCD-E1 channels cannot
communicate with the remote
equipment (main link operates
normally)
1. External problem Activate the local digital loopback on that
channel. Check that the equipment
connected to the channel receives its own
signal. If not, the problem is external.
2. Defective FCD-E1 Perform power-up self-test and replace the
FCD-E1 if defective.
5 Ethernet interface ERR indicator
lights most of the time, and LAN
cannot operate
1. Loopback connected
on the FCD-E1 with
Ethernet interface
If the TST indicator lights, check and
disconnect the loopback
2. Cable problem Check and replace if necessary the cable that
connects the 10BaseT connector to the LAN
3. Problem on the LAN Disconnect the FCD-E1 from the LAN: if
problem persists, troubleshoot the LAN
4. Defective FCD-E1 Perform power-up self-test and replace the
FCD-E1 if defective