ADTRAN Total Access 372 - Troubleshooting

Total Access 372 Small Business Unit ONT Installation and Maintenance Guide
38 61287722G1-5B
POTS Troubleshooting
WhenthePOTSLEDisred,theportisinafaultcondition.Tocorrecttheproblem,dothe
following:
• ContacttheOLTadministratorandensuretheportisprovisionedand working.Iftheport
isprovisionedandworking,proceedtothenextstep.
• DisconnecttheCPEwiringandwait30seconds.IftheRedLEDtu
rnsoff,thetroubl
eisa
shortinthehousingwiring.IftheREDLEDremainson,the unitisprobablybad.
Cleaning and Inspection of Components
Becausethephysicalsizeofthetransmissioncoreoftheopticalfiberistypicallyonly9
micronsinsize,debrissuchasasingleparticleofdustorsmokeorstrandofhaircanimpair
thepathenoughtocausetransmissionproblems.Thissectionprovidesinformationand
proceduresforthefollowing:
• “CleaningSugge
stions
”
• “CleaningtheConnectors”
• “SignalLevelVerification”onpage 39
Cleaning Suggestions
Followingisalistofsuggestionsforcleaningconnectors,ferrules,andbulkheads:
• Alwaysmaintaindustcapsanddustplugsinstalledwhenconnectorsoradaptersarenot
mated.Storesparedustcapsinazip‐lockbagwhennotinuse.
•Avoidallowingunmatedconnectorstotouchsurroundingunrelatedsurfacesanddonot
tou
c
haconnectororbulkheadferruleforanyreasonotherthanwhileperformingthe
cleaningprocess.
•Useafiberscopeorvideoscopetoverifypropercleaningofconnectorspriortomating
connectingcomponentstogether.
•Useanappropriatequalityfabrictypecleanerandpurealcohol(reagentgrade,99.5%
pure)whencleaningtheendfaceofconnectors.Thealcoholcanbeap
pliedwi
theither
laboratorygradelint‐freetissuesorwithpre‐moistenedopticalgradewipes.
•Usemicroporousfabricspiralwrappedcleaningtipstocleanbulkheadferrules.
•Donotusecompressedairtocleanopticalbulkheads.
Cleaning the Connectors
Tocleantheconnector,completethefollowing:
1.Wrapthecleaningwipearoundtheexposedconnectorendface,applyfirmpressure,and
twistthewipearoundtheferrulebackandforthinquartertohalf‐turnrotationsatleast
threetimes.
2. Presstheendfaceoftheferruledirectlyintoaclean,wetspotonthewi
peandtwistthe
ferrulewhi
leapplyingpressuretoperformawipingaction.
3. Inspecttheendfaceoftheferrulewitheitherthefiberscopeorvideoscope.Iffu rther
cleaningiswarranted,usethefabrictypecleanertocontinuecleaningaccordingtothe
cleanerinstructions.Rememberananglepolishedconnectorisinusesorefe
rtothat
s
pecificsectionofthefabrictypecleaner’sinstructions.