FlexGain FOM16 - Troubleshooting

FOM16 Installation Description
FOM16-V2.0-20021114
-45-
8.2 Troubleshooting
In case a problem occurs, check the displayed indications and refer to Section 5 and Table 1 for
their interpretation. Identify the trouble symbols and perform the actions listed under Corrective
Measures in the order given in Table 2, until the problem is corrected.
Table.2 Troubleshooting Chart
NO. Trouble Symptoms Probable Cause Corrective Measures
1. Check that both ends of the
power cable are properly
connected.
1 The FOM16 cannot work 1. No power
2. If the FOM16 is powered from
DC, check the polarity of the
power connections.
2. Blown fuse Disconnect the power from both
ends and replace the fuse with
another fuse of the same
3. Defective FOM16 Replace the FOM16.
2. POEWER indicator off Defective power supply Turn the respective power supply
off for at least 10 minutes, and
then turn it on again. If the
POWER indicator is still off,
have the FOM16 repaired as
soon as possible.
1. External problem Activate the optical local
loopback on FOM16. Check the
E1 tributaries in use. If E1
tributaries of the FOM16 are
OK, check the remote unit, the
optical interface connectors, and
the optical transmission path to
the remote unit.
3. The Optical Working indicator
red
The Optical Protection
indicator red
2. Defective FOM16 Replace the FOM16.
1. External problem Activate the E1 local loopback
on FOM16. Check the E1
tributaries in use. If E1
tributaries of the FOM16 are
OK, check the E1 tributaries
interface connectors, and the E1
tributary transmission path.
4. Ch1 ~ Ch16 indicator red
2. Defective FOM16 Replace the FOM16.