Cisco Cisco Prisma II ICIM 2 Installation Guide
Chapter 3 Maintenance and Troubleshooting
38
OL-32414-01
Transmitter Module Troubleshooting Chart
Symptom
Possible Cause
Possible Solutions
No optical signal output
(ALARM LED is Red)
The laser temperature
could be too high or low.
could be too high or low.
Allow up to one minute after
power is ON for the
temperature to stabilize.
power is ON for the
temperature to stabilize.
If still no output, contact Cisco
Services for assistance.
Services for assistance.
The laser could be
faulty.
faulty.
Contact Cisco Services for
assistance.
assistance.
Automatic power
control circuit failure.
control circuit failure.
Contact Cisco Services for
assistance.
assistance.
Damaged fiber.
Contact Cisco Services for
assistance.
assistance.
No optical signal output
(cont'd)
(cont'd)
One or more power
supply voltages are out
of specification.
supply voltages are out
of specification.
Check the power supply for
proper operation.
proper operation.
No AC at receptacle.
Check the receptacle for AC
power.
power.
Blown fuse on the power
supply.
supply.
Check the power supply fuse
and replace as necessary.
and replace as necessary.
Faulty module.
Contact Cisco Services for
assistance.
assistance.
Additional Assistance
If you need additional assistance, contact Cisco Services or your local sales
subsidiary. See Customer Information (on page 39) for contact information.
subsidiary. See Customer Information (on page 39) for contact information.