Cisco Prisma II Installation Manual page 137

Alarm Function
PsOk Bus voltage
status
Communication Status of LCI
Status communication
with module
(also indicated
by negative poll
count)
Rx1_LOS Loss of signal
for Rx1
Rx2_LOS Loss of signal
for Rx2
Rx3_LOS Loss of signal
for Rx3
Rx4_LOS Loss of signal
for Rx4
Possible Causes

Power supply failure

LCI cable
disconnected

Receiver module
failure

PC serial port not
operating correctly

Broken fiber

Transmitter failure

Faulty OPM

Low input power

Alarm limits set
incorrectly

Broken fiber

Transmitter failure

Faulty OPM

Low input power

Alarm limits set
incorrectly

Broken fiber

Transmitter failure

Faulty OPM

Low input power

Alarm limits set
incorrectly

Broken fiber

Transmitter failure

Faulty OPM

Low input power

Alarm limits set
incorrectly
Troubleshooting Alarm Conditions
Possible Solutions

Check power supply

Check LCI cable

Replace receiver
module

Reconfigure PC serial
port

Check, clean fiber

Check transmitter

Replace faulty OPM

Check, clean fiber

Check transmitter

Replace faulty OPM

Check, clean fiber

Check transmitter

Replace faulty OPM

Check, clean fiber

Check transmitter

Replace faulty OPM
135