Cisco Prisma II Installation Manual page 138

Chapter 5 Maintenance and Troubleshooting
Alarm
Rx1_Data
Rx2_Data
Rx3_Data
Rx4_Data
IntComm
Alarm
Node Data
Alarms Specific to GS7000 Nodes
Alarm
NdTxPwr
NdRxPwr
136
Function Possible Causes

Loss of data for
Rx1

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

Loss of data for
Rx2

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Loss of data for
Rx3

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Loss of data for
Rx4


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Internal
communication
error

Forced alarm

Node data valid
or invalid

Function Possible Causes

Tx loss of output
power


Rx loss of
output power

Degraded signal
Low input power
Degraded transmitter
Wrong mode selected
Degraded signal
Low input power
Degraded transmitter
Wrong mode selected
Degraded signal
Low input power
Degraded transmitter
Wrong mode selected
Degraded signal
Low input power
Degraded transmitter
Wrong mode selected
Hardware failure
User is forcing an
alarm
Broken fiber
Transmitter failure
Broken cable
Transmitter failure
Low or no input
power at node
receiver input
Node receiver
hardware failure
Possible Solutions

Check, clean fiber

Check transmitter
output power

Check, clean fiber

Check transmitter
output power

Check, clean fiber

Check transmitter
output power

Check, clean fiber

Check transmitter
output power

Replace module

Check for other
alarms indicating
fault elsewhere

Disable "Alarm"
control

Check fiber

Check transmitter
Possible Solutions

Check cable

Check transmitter

Replace module

Check for other
alarms indicating
fault elsewhere