Nortel Passport 15000, Установка и обслуживание оборудования, Страница: 293 / 874

Chapter 17 Hardware procedures 293
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
Cleaning the bore of a transceiver
Clean the bore of a transceiver to maintain optimum connectivity between the
end of a fiber cable and its connection.
Prerequisites
• You must be familiar with “Safety considerations and best practices”
(page 53).
• The bore is the opening in the transceiver which accepts a fiber optic
connector. Passport FPs have either LC, MT-RJ, or SC connector bores.
With LC or SC transceivers the transmit portion of the device aligns the
ceramic ferrule of the laser with a split sleeve. Any dirt in this sleeve can
compromise the quality of the optical connection. With MT-RJ
connectors the fibers are aligned to the transceiver with internal metal
pins which mate to the MT-RJ fiber connector. Any dirt on the pins, or
on the endface of the ferrules can prevent proper alignment and
compromise the quality of the optical connection.
• Wear vinyl gloves to avoid contaminating the sleeve or the cleaning tools
with skin oil.
• Refer to “Cleaning tools and supplies for fiber connectors” (page 287).
Procedure steps
1 Remove the connector from the transceiver by pressing the tab fully down
and pulling straight away from it, or remove the dust cap by pulling straight
away from it. Put the cable aside for cleaning, or put the dust cap aside for
re-use.
2 Using a can of compressed gas, blow one or two short bursts to remove
any large contaminants from the sleeve or pins.
Do not blow onto the ferrule with your breath. Moisture from your breath
will contaminate the surface.
3 Moisten a lint-free foam swab with alcohol. Shake off any excess alcohol.
4 Carefully insert the swab into the port. When it bottoms out, slowly rotate
the stick once or twice in one direction only. Discard the swab after each
use.
5 Repeat step 4 with a new swab to ensure that the alcohol has fully
evaporated.