Cisco Prisma II - Troubleshooting Alarm Conditions; Module Alarm Conditions

Chapter 5 Maintenance and Troubleshooting
104 78-4015908-01 Rev F
Troubleshooting Alarm Conditions
Module Alarm Conditions
If the red ALARM indicator is illuminated or is blinking, check the display on the
front panel to determine the cause of the alarm.
Alarm Function Possible Causes Possible Solutions
Rx 1 Optical Input
Power
Optical input 1

Broken fiber

Transmitter failure

Check fiber

Transmitter failure
Rx 2 Optical Input
Power
Optical input 2

Broken fiber

Transmitter failure

Check fiber

Transmitter failure
PsOk Bus voltage
status

Power supply
faulty

Check power supply
AGC 1 Range
Status
AGC 1 out-of-
range alarm

Broken fiber

Transmitter failure

Input power too
high or too low for
AGC setting

Check fiber

Transmitter failure

Adjust AGC
AGC 2 Range
Status
AGC 2 out-of-
range alarm

Broken fiber

Transmitter failure

Input power too
high or too low for
AGC setting

Check fiber

Transmitter failure

Adjust AGC
CAUTION:
Some 1310 nm transmitters with serial numbers beginning with NN are not
compatible with these receivers. Do not install these transmitters in any daisy
chain with one or more of these receivers.