IfCoverIceRouteMotor(GearedMotor)IsNotWorkingNormally; IfCoverIceRouteMotor(GearedMotor)IsNotWorkingNormally - Samsung RFG298HD Service Manual

TROUBlESHOOTING

4-2-15.IfCoverIceRouteMotor(GearedMotor)isnotworkingnormally

Caution
1.WhenreplacingtheCoverIceMotor,pullouttheplugtoavoidanelectricshock.
2.Becareful!WhendisassembletheCoverIceMotor,springcanjumpedoutandmaycausepersonalinjury.
3.MotorwillrotatecontinuouslywhentheMotorSwitchisnotsensed.
☞ C heckingMehodofCoverIceRouteMotor
Resistance
(MakesuretoworkafterPowerOff)
thevoltageofResistanceisvariable
accordingtotheinputvoltage.
CN70-"5"(Red)↔ CN73_1-"3"(Blue)
**0Ω:Shorttrouble/Ω∞:Opentrouble
WhentheMOTOR
rotates.
OperatingConditionofDispenser
Open/Close
CN50-Switch1,2Operating
Close
IceRouteSwitch1
0V
CN50-"9"(Purple)
IceRouteSwitch2
0V
CN50-"10"(White)
①  M ainPCB-CheckthewireOPEN/SHORTbetweentheCoverIceMotorRotationsensingswitches.
② ChecktheShortofCoverIceMotorControlCircuitSSR75intheMAINPCB.
③  R eplacetheMAINPCBortheDispenserCoverMotor.
DoesGEAREDMOTOR
workproperly?
IsCubedorCrushed
Icemodeselectedonthe
LEDPANEL?
IstheDISPENSER
switchselected?
Doesthewiringatthe
bothsidesofmotorconnected
IstheACinputvoltage
appliedtothebothends
ofthemotor?
① Check CN73_1-"3" Connector / Re-connect
② Check the short/open for the SSR75 of Cover Ice Motor on Main PCB.
③ Check the voltage of Resistance of parallel Connector CN73 -"3",
CN70 -"5"
(Definitely plug out prior to repair)
Isthesensing
SWITCHconnection
pressedareanormalwhen
motorrotates?
Arethevoltage
ing Open
J23JUMMPERandCN50-"9",
"10"normal?
5V 0V
5V 0V
Start
No
ReplacetheMOTOR
yes
No
CubedorCrushedIceisselected
yes
ontheLEDPANELPCB
No
SelecttheDISPENSERswitch
yes
No
properly?
ChecktheWIRE
yes
yes
ChecktheMOTOR/Checkany
No
interferenceonMOTORrotation
No
normal?
yes
Check/RepairtheHousing
connector
No
Istheswitch
Check/RepairtheMotorRotation
yes
pressingarea
yes
No
88
Normal