Cisco Prisma II Hybrid Amplifier Installation Manual page 48

Chapter 2 Module Installation
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.
Note: Read the above warning before performing cleaning procedures.
Cleaning Connectors
It is important that all external jumper connectors be cleaned before inserting them
into the optical module. Follow these steps to clean fiber optic connectors that will
be connected to the optical module:
Important: Before you begin, remove optical power from the module or ensure that
optical power has been removed.
Inspect the connector through an optical connector scope. If the connector is
1
damaged, e.g., scratched, burned, etc., replace the jumper.
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 a CLETOP 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 a second inspection indicates that further cleaning is needed:
a Use 99% isopropyl alcohol and a lint-free wipe to clean the connector.
b Use the CLETOP ferrule cleaner again to remove any film left over from the
alcohol.
c Inspect the connector again through the scope and confirm that it is clean.
If necessary, repeat steps 3a-3c until the connector is clean.
4
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 will risk damage to the fiber.
It is generally more difficult to clean bulkhead connectors and verify their condition
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.
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