Nortel Passport 15000, Установка и обслуживание оборудования, Страница: 65 / 874

Chapter 2 Safety considerations and best practices 65
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
Use the procedure “Vacuuming equipment” (page 870), which includes the
criteria for specific vacuum equipment. Consider doing this procedure in the
same frequency as needed for “Air filter replacement” (page 64).
Fiber cable cleaning
Cleaning the ends of optical fiber cables is necessary to maintain optimum
connectivity between the end of a fiber cable and its connection. Dirt in an
alignment sleeve, along the side of a ferrule, in an adaptor sleeve, or in a
transceiver bore can cause a misalignment of the optical fiber. Dirt on the
endface of a ferrule can damage the optical fiber or cause a non-contacting
connection.
Use the following procedures to clean fiber cables to maintain optimum
connectivity:
• “Cleaning LC or SC connectors” (page 285)
• “Cleaning MT-RJ connectors” (page 290)
• “Cleaning the bore of a transceiver” (page 293)
SFP optical module cleaning
Cleaning a small-form pluggable (SFP) optical transceiver module is
necessary to maintain optimum connectivity between the FP socket (port) and
its interfacing fiber cable. Ensure that an SFP optical module is clean each
time you are about to insert it into an optical module socket on the faceplate
of an FP.
When you store an SFP for re-use, keep it in a container that prevents
contamination by dust, moisture, and electrostatic discharge (ESD).
Use the procedure “Cleaning an SFP optical module” (page 281) as required.
Monitoring equipment status LEDs
Plug-in Passport processor cards (and some Passport 15000 or 20000 plug-in
modules) and screw-on peripheral equipment such as sparing panels have lit
colored LEDs to indicate operational status. Some control processor (CP)
cards and function processor (FP) cards have additional LEDs to indicate the