Samsung RS23 manual Operation Principles By Parts Of Circuit, 5-3RESET CIRCUIT

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OPERATION PRINCIPLES BY PARTS OF CIRCUIT

5-3) RESET CIRCUIT

●RESET Circuit allows the whole program to go back to the initial setting by initializing parts such as the RAM in MICOM with the power supply into MICOM or with an instant power failure.

Upon the power supply, the reset terminal voltage becomes "LOW" for several tens of ㎲ compared to Vcc voltage(DC 5V) at MICOM, and it maintains "HIGH"(Vcc Voltage) during normal operation.

But, when Vcc drops down to 3.4~3.7V, the reset terminal voltage becomes "LOW".

5-4) EEPROM DETECTION CIRCUIT

●A semiconductor memory EEPROM stores data remembering previous settings regardless of power-off, which are indispensable especially in power fluctuating areas. Also, EEPROM sets and uses other options in principle.

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Contents Model SAMSUNG Home Appliance ServiceRS2*3* RS2*2* RS2*1 SIDE-BY-SIDEREFRIGERATORSAMSUNG ELECTRONICS AMERICA, INC IMPORTANT SAFETY NOTICETechnical Service Guide Copyright Contents 1. Safety Instructions on Service SAMSUNG REFRIGERATOR 2. Warranty informationLIMITED WARRANTY TO ORIGINAL PURCHASER One 1 Year Parts and Labor on Refrigerator3-1Refrigerator Disassembly 3. Mechanical Disassembly3-2Freezer Disassembly 3-3Machine Compartment DisassemblyControl Panel Refrigerator Door Light SwitchDoor Handle Door GasketRefrigerator Light Mechanical DisassemblyTempered Glass Shelf Gallon Door BinRefrigerator Thermistor Damper in the RefrigeratorTwin cool in the Refrigerator Mechanical DisassemblyPlastic Wire Drawer in Freezer Freezer Door Light SwitchDoor Bin in Freezer Freezer ShelfMechanical Disassembly Ice Dispenser & Ice MakerAuger Motor Case Evaporator Fan Motor Freezer LightEvaporator Cover in Freezer Mechanical DisassemblyIce-MakerThermistor Evaporator in FreezerFreezer Thermistor Mechanical DisassemblyWater Solenoids Machine Compartment ＆ Electric BoxCondenser Fan Condenser4. CIRCUIT DIAGRAM 5-2OSCILLATION CIRCUIT 5-1POWER5. OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-4EEPROM DETECTION CIRCUIT 5-3RESET CIRCUITOPERATION PRINCIPLES BY PARTS OF CIRCUIT OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-5DOOR SWITCH DETECTON CIRCUITCategory DoorOPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-6TEMP SENSING CIRCUITTemp to Resistance of Sensor & MICOM PORT Voltage OPERATION PRINCIPLES BY PARTS OF CIRCUITSensor CHIP PX41C Standard Temp5-8DISPLAY Circuit 5-7DAMPER CIRCUITOPERATION PRINCIPLES BY PARTS OF CIRCUIT 1 KEY SCANGRID WAVE PATTERN OPERATION PRINCIPLES BY PARTS OF CIRCUIT2 DISPLAY OPERATION OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-9Load Control CircuitOPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-10ICE MAKER OPERATION CIRCUITOPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-11OPTION Circuit6-1Freezer 6. Illustrated Parts Catalog6-2Refrigerator Illustrated Parts Catalog6-3Cabinet Illustrated Parts CatalogIllustrated Parts Catalog 6-4Disassembly of Freeze DoorIllustrated Parts Catalog 6-5Disassembly of Refrigerator DoorRef.1 Measure Load Terminals Appendix ⅠReference for circuit diagnosticsLOAD DEFECTSRef.2 Check SENSOR Appendix ⅠReference for circuit diagnosticsTEL 82-62-950-6810,6811 FAX ELECTRONICS272, Oseon-Dong, Kwangsan-Gu Kwangju-City,Korea