Samsung RF23HT Series Service Manual

104TROUBLESHOOTING4-2-16. If Cover Ice Route Motor(Geard Motor) is not working normallyStartReplace the MOTORDoes GEARED MOTORwork properly?NoYesCubed or Crushed Ice is selectedon the LED PANEL PCBIs Cubed or CrushedIce mode selected on theLED PANEL?NoYesSelect the DISPENSER switchIs the DISPENSERswitch selected?NoYesCheck the WIREDoes the wiring at theboth sides of motor connectedproperly?NoYesWhen the MOTORrotates.Check the MOTOR/Check anyinterference on MOTOR rotation① Check CN73_1-"3" Connector / Re-connect② 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)Caution1. When replacing the Cover Ice Motor, pull out the plug to avoid an electric shock.2. Be careful! When disassemble the Cover Ice Motor, spring can jumped out and may cause personal injury.3. Motor will rotate continuously when the Motor Switch is not sensed.① Main PCB - Check the wire OPEN/SHORT between the Cover Ice Motor Rotation sensing switches.② Check the Short of Cover Ice Motor Control Circuit SSR75 in the MAIN PCB.③ Replace the MAIN PCB or the Dispenser Cover Motor.Is the AC input voltageapplied to the both endsof the motor?YesNoCheck/Repair the HousingconnectorIs the sensingSWITCH connectionnormal?NoYesCheck/Repair the Motor Rotationpressing areaIs the switchpressed area normal whenmotor rotates?NoYesNormalAre the voltageREG1-GND and CN50-”9”,“10” normal?YesNoOperating Condition of DispenserOpen/CloseCN50 - Switch 1,2 OperatingOpeningCloseIce Route Switch 1CN50 - “9” (Purple)Ice Route Switch 2CN50 - “10” (White)0V 0V5V0V 0V5V☞ Checking Mehod of Cover Ice Route MotorResistance(Make sure to work after Power Off)the voltage of Resistance is variableaccording to the input voltage.CN70 -"5" (Red) ↔ CN73_1 -"3" (Blue)** 0Ω: Short trouble / Ω∞: Open trouble