COMBA COMFLEX Series - Alarms Diagnosis and Resolution

USER MANUAL FOR COMFLEX-6Q00 5W
ENU STATUS: 1-0-1 Copyright - refer to title page Page 64
6.2 TROUBLESHOOTING
Following installation and commissioning, occasional operation tasks to handle alarms may be required:
Table 16: MU Alarms Diagnosis
Alarm condition Diagnosis
Over-
Temperature
alarm

Check temperature on WEB GUI
 If device temperature is over threshold, make sure environment temperature is within the
envireonment temperature range that MU supported (0~40℃). Apply climatic protection to
the system under severe environment.
Optical TX Alarm

Test MU transmit optical power
 Replace FOU if transmit optical power is less than -7dBm
Optical RX Alarm

Clean optical cable connector with pure alcohol first , reconnect and see if alarm disappears
 Use Optical Power Meter to test received optical power
 If received optical power is lower than -10dBm, test whether RU transmit optical power is
normal (3~5dBm)
 Check if optical loss of fiber link is higher than 6.5dBo
DL Input Power
Overload Alarm
Test DL input power of MU, if it is higher than +32dBm, by decreasing source output power or
adding an external attenuator with proper attenuating value.