Samsung RF267ABRS Service Manual

Contents

70TROUBLESHOOTING1. Water is automatically supplied to the Ice Maker by temperature & time and Ice Maker Dispenses cubed orcrushed ice.2. Power is applied to the one end of wires. Be careful when disassembling and shall refer to its exploded diagramin any case.3. Ice Maker operation shall be checked after pressing the Ice Maker testing switch.(Freezer Ice Maker) It is not possible to check when the power is disengaged.4. We recommend that TWO PEOPLE check the PCB and Ice Maker because hey are located at front and rearside each.5. Be careful! The Ice Maker Heater can cause personal injury like burn.4-2-4. If Ice Maker does not operateó Checking Method of ICE Maker VoltageWith typical PCB Ground CN1-”3”(Black) and1) Test Switch operation (press selected) : CN90-”5” (Gray) shall be DC 0V.Test Switch ready ; CN90-”5” (Gray) shall be less than DC 5V.ó Checking Method of ICE Maker VoltageWith typical PCB Ground CN1-”3”(Black) and2) IC02 MICOM #27 voltage ; Ready(0V) ª Rotate (4.9V) ª Beforecomplete(4.9V) ª Return(0V)* MICOM #27 voltage is same as Connector CN90-”7”(Purple)3) IC02 MICOM #28 voltage ; Ready(0V) ª Rotate (0V) ª Beforecomplete(4.9V) ª Return(0V)* MICOM #28 voltage is same as Connector CN90-”6”(Blue)1)Test Switch operating 1)Test Switch ready typical PCB GroundCN1-"3"(Black)Displays ERROR Code2¢ (-17¡ ) is recommended 38¢ (3¡ ) is recommended Start1) Replace the Ice Maker Kit2) Check/Replace the Main PCBinput signal(Micom IC02 Pin #29 - “0V”)Does Ice Makerrotate when pressing the Ice Makertesting switch(over 1.5 sec)?No1) Check the wiring connections.2) Replace Ice Maker Kit3) Replace MAIN PCBIs the input voltage of IC02MICOM #27, 28 normal? No1) Replace the Water Valve* Refer to the operationcondition of Water Valve2) Replace the Main PCBIs the water supplied in 6minutes (After sensing ice bucketfully)?No1) Repair the Ice Maker Sensor* Refer to the solution “If IceMaker Sensor has trouble”No trouble with PCB and temperature sensor,Check the bad wiring connections.Is the Ice Maker Sensor unit normal? NoOperating Condition when motor rotatesOperating Status of Micom(IC02)Heater operates differently according tothe conditions.Test Mode operation will be 30 sec.Operation5V5VReady0V0VMotor Load (#10)Heater Load (#9)MICOM(IC02) Operation Status#29(Test Switch)Operation5VReady0VMICOM(IC02) Operation Status#27(Blade Ice Scoop)#28(Guide Ice Full)Ready Rotation BeforeComplete Returning0V 4.9V 4.9V 0V0V 0V 4.9V 0Vó Check the ICE Maker Heater & Motor ResistanceResistance value can be changed according to the Voltage andPerfermance changes.1) Measuring the Ice Maker Heaterresistance valuesCN70-”1” (Red) & CN72-”3” (White)Resistance value : 91(364)Ohm 7% Resistance value : 3.93(11.76)KOhm 7%CN70-”1” (Red) & CN72-”1” (Brown)2) Measuring the Ice Maker Motorresistance valuesYesYesYesYes