Toro Reelmaster 3100-D - Page 243

Testing(continued)
g346656
Figure124
1.COMBterminal4.COMCterminal
2.NOBterminal5.NOCterminal
3.NCBterminal6.NCCterminal
4.IftheSCMdeterminesthatthePTOswitchandcircuitwiringarenot
functioningcorrectly,thentestthePTOswitchasfollows:
A.RemovecoverfromcontrolpaneltogainaccesstoPTOswitch.
B.EnsurethatthekeyswitchisintheOFFposition.Disconnectthewire
harnessconnectorfromthePTOswitch.
C.ThePTOswitchterminalsareidentiedinFigure124andthecircuitryof
thePTOswitchisshownintheCircuitLogicT able(page6–19).Withthe
useofamultimeter(ohmssetting),testtheswitchfunctionstodetermine
ifthecontinuityexistsbetweenthevariousterminalsforeachswitch
position.Checkthecontinuitybetweentheswitchterminals.
CircuitLogicTable
SwitchPositionClosedCircuitsOpenCircuits
OFF(DOWN)COMB+NCB
COMC+NCC
COMB+NOB
COMC+NOC
ON(UP)COMB+NOB
COMC+NOC
COMB+NCB
COMC+NCC
D.ReplacethePTOswitchiftestingdeterminesthattheswitchisdamaged.
E.IfthePTOswitchtestingiscorrectandacircuitproblemstillexists,check
thewireharness;refertotheElectricalSchematicsandWireHarness
Drawings/DiagramsinAppendixA(pageA–1).
F.Afteryoucompletethetesting,connectthemachinewireharness
connectortothePTOswitch.Installcontrolpanelcover.
Reelmaster
®
3100-D/3105-D
Page6–19
ElectricalSystem:ComponentTesting
20252SLRevA