General Troubleshooting Information, Continued
Troubleshooting
If the red alarm indicator on the front panel of the module is illuminated, check
the OptoStar II ICIM display, the OptoStar II console, or the OptoStar II NMS for
alarm code. See
Alarm Code List
(on page 3-13) to determine the cause of the
alarm. See the table below.
Alarm
Possible Cause
Servicing Instruction
High Module
Temperature
High ambient
temperature leading
to insufficient heat
dissipation
Poor chassis
ventilation
Chassis fan failure
Ensure good ventilation
Put the chassis in a place
with good ventilation
In case of fan failure,
repair or replace the fan,
or contact the
manufacturer for
servicing
Low or High RF
Input Level in
Channel A/B
RF source failure
RF cable or connector
failure
Make sure the RF
connector matches
Make sure the cable
works properly
Inspect if the RF input
level meets the
specifications
Calibrated signal level +
preset threshold >A/B
channel input level >
calibratedi signal level -
preset threshold
If the input level is
normal, contact the
manufacturer for
servicing
4-4
Troubleshooting
OL-29669-01
