TAP-121 363-206-295ClearingTrouble:
1997December1,Issue6of4Page
Is14. FAULT (lightedLED CPunexpectedfail,CPOLIU
type/switches (flashingoretc.), sig.LOF,LOS,OC3inc.
failed oneonlyonetc.), OLIU end?farorendneareitherat
If YES withcontinuethen, 15Step .
If NO toproceedthen, 24Step .
Is15. ACTIVE protectionandservicebothonlightedLED OLIUs
(rtrv-state)?
If YES toproceedthen, 18Step .
If NO withcontinuethen, 16Step .
Minor?orCriticalalarmIs16.
If MINOR toproceedthen, 19Step .
If CRITICAL withcontinuethen, 17Step .
17.
NOTE:
far-endornear-thatareIndications OLIU haslinefiberincomingor
oroneatlockedorinhibitedbeenhasswitchingprotectionandfailed
thefails,lineprotectiontheifAlso,ends.both ACTIVE bothonLEDs
OLIU Ifend.fartheofstateuncertaintheofbecauselightedbewills
the rtrv-state indicatesreport active-? lineprotectionthefor
(slot 2(P) theIffailed.islineprotectionthethatareindications),
(slotlineservice 1 indicates, active-rx system,theofendsbothat
service.allcarryingislineservicethe
andCITUse rtrv-state BOTHatstatusswitchchecktocommand
system.ofends
andCITUse18. switch-line bothswitchandswitchresettocommand
tolinesfar-endandnear- OLIU lightedwithoutpair FAULT LED.
Replace19. OLIU flashingorlightedwith FAULT LED.
Reference: DLP-518 or 363-206-285, DLP-523
clear?troubleDid20.
If YES then, PROCEDURE.THISCOMPLETEDHAVEYOUSTOP.
If NO withcontinuethen, 21Step .
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