Cisco Cisco 1 GHz GainStar Node Installationsanleitung
Chapter 4 Troubleshooting
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WARNING:
Avoid damage to your eyes! Do not look into any optical connector while
the system is active. Even if the unit is off, there may still be hazardous
optical levels present.
the system is active. Even if the unit is off, there may still be hazardous
optical levels present.
Important: Read the above warning before performing cleaning procedures.
Cleaning Connectors
Important:
All external jumper connectors must be cleaned before inserted into the optical
module.
module.
Before you begin, ensure that there is no optical power in the module.
Complete the following steps to clean fiber-optic connectors that will be connected to
the optical module.
1 Inspect the connector through an optical connector scope. If the connector is
the optical module.
1 Inspect the connector through an optical connector scope. If the connector is
damaged, for example, scratched, burned, and so forth, replace the connector.
2 If the connector is dirty but otherwise undamaged, clean the connector as
follows:
a Make several swipes across the face of the connector with appropriate ferrule
a Make several swipes across the face of the connector with appropriate ferrule
cleaner. This will remove dust and some films.
b Listen for a slight "squeak" typically generated during this process, indicating
a clean connector.
c Inspect the connector again through the scope to confirm that it is clean.
3 If the second inspection indicates that a further cleaning is needed:
a Use 99% isopropyl alcohol and a lint-free wipe to clean the connector.
b Use the appropriate ferrule cleaner to remove any film left over from the
b Use the appropriate ferrule cleaner to remove any film left over from the
alcohol.
c Inspect the connector again through the scope and confirm that it is clean.
4 If necessary, repeat steps 3a-3c until the connector is clean.
Cleaning Bulkheads
Important:
Do not detach the bulkhead from the module front panel for cleaning under any
circumstances. There is little or no slack in the fiber attached to the bulkhead,
and any attempt to remove the bulkhead has the risk of damaging the fiber.
circumstances. There is little or no slack in the fiber attached to the bulkhead,
and any attempt to remove the bulkhead has the risk of damaging the fiber.
It is generally more difficult to clean bulkhead connectors and verify their
conditions due to the inaccessibility of the fiber end face. For this reason, you
should only attempt to clean a bulkhead connector when a dirty connector is
indicated.
conditions due to the inaccessibility of the fiber end face. For this reason, you
should only attempt to clean a bulkhead connector when a dirty connector is
indicated.
Complete the following steps to clean the bulkhead.