Electrolux T5675 - Internal Com. I;O Type 10

Troubleshooting
161
INTERNALCOM.I/OTYPE10
41:1CHARGECIRCUIT
TheDLCUonI/Oboardtype10containsanarmingcircuitthatischargedwhenthedoorlockcoil
istobeactivated.Forsafetyreasons,thisarmingcircuitmustbedischargedwhenthedoorlock
coilisnottobeactivated.Ifthearmingcircuitforoperatingthedoorlockischargedwhenitisnot
supposedtobe,anerrormessagewillbesenttotheCPU.
CPUreadstheerrormessagewhenthedoorislockedandunlockedandgeneratesanerror.The
errorisignoredbetweenthesetwooccasions.
Possiblecauses:
•Theerrorcanbeecausedbyoverloadsand/ordefectivecomponentsintheDLCUonI/O
boardtype10.
Forpocketmachine,thiserrorrelatestoI/Oboardtype10on"Loadingside".
Seealsocorrespondingerror41:21forI/Otype10on"Unloadingside".
41:2SETSIGNALNOTACHO.WAIT5MINUTES
TheDLCUonI/Oboardtype10countsthetachopulsesfromthemotorinordertoguaranteethat
thedrumisstandingstillbeforethedoorisopened.T oensurethatthesignalfromthetacho
generatorisworkingcorrectly,DLCUcomparesthetachosignalwithadigitalbitvaluefromthe
CPU,whichisduetotheCPUhavingactivatedthemotor(SeeDLCUstatusindication).
Errorwillresetautomaticallyafter5minutesanddoorwillthenunlock.Theerrormessageis
lteredinsuchawaythat:-thedigitalbitvalueshouldhavebeenactiveformorethan2seconds
-whenthedigitalbitvaluegoeslow,tachosignalmustbepresent-testisonlyperformedwhen
doorisabouttounlock.
Possiblecauses:
•Openorshortedcircuittothetachosensor.
•Damagedtachosensorormagnet.
•Secondaryfaultduetoaerrorinthemotorsystem.
Recommendedactions:
1.Checkthatmotorisactuallyrunning.
2.Checkthereisvoltagefromtachometeroutputwhenmotorisrunning.
3.CheckthatrotationisdetectedinDLCUstatusfortheI/Otype10board.
Forpocketmachine,thiserrorrelatestoI/Oboardtype10on"Loadingside".
Seealsocorrespondingerror41:22forI/Otype10on"Unloadingside".