Repair
Transformer Transformer
Transformer
Secondary Secondary
Secondary
Check Check
Check
SeeElectricalSchematics,page103.
1.Checkwiresandtransformer:
a.Disconnect7pingreenconnectorfromTCM.
b.Useanohmmetertotestforcontinuity
betweenterminals6and7ontheTCM7pin
greenconnector.Thereshouldbecontinuity.
Ifthereisnocontinuity,checktransformer.
c.Reconnect7pingreenconnectortoTCM
2.Checktransformer:
a.Removelowershroud.
b.Locatethetwolarger(6AWG)wires,
labeled3and4,comingoutoftransformer.
TracethesewiresbacktoTB17andTB18.
OpencircuitbreakerCB01toturnthecolor
indicatoronthecircuitbreakerGREEN.Use
anohmmetertotestforcontinuitybetween
twotransformerwiresinterminalblocks
TB17andTB18;thereshouldbecontinuity.
c.ClosethecircuitbreakerCB01.
Figure16
d.Applyincomingpowertosystem.
e.Toverifyvoltageonthesecondaryleads
ofthetransformer,measurebetweenthe
terminalsterminals3and4onTB17and
TB18.Verifyvoltageisapproximately90
VACfor240VACinput.
f.SeetheDiagnosticRunScreenonthe
ADM.TheDiagnosticRunScreendisplays
theincoming(90Vac)totheTCM“Hose
Voltage”.Thediagnosticscreenwillshowif
thecircuitbreakerhasbeentrippedforthe
incomingpowertotheTCM.
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