Samsung RS23 5-5DOOR SWITCH DETECTON CIRCUIT, Operation Principles By Parts Of Circuit, Door

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5-5) DOOR SWITCH DETECTON CIRCUIT

OPERATION PRINCIPLES BY PARTS OF CIRCUIT

5-5) DOOR SWITCH DETECTON CIRCUIT

1)If R-Door is opened, the contact point of the door switch (4-3) becomes open, and the current of PCB line comes through R404 and R405 and provides 5 volt which is recognized as door is opened, and turn off the fan at different load. When the door is closed, the voltage goes out from R404 to Switch, the MICOM is applied with OV and the door is recognized as closed.

2)If F-Door is opened, the contact point of the door switch (4-3) becomes open, and the current of PCB line comes through R402 and R403 and provides 5 volt which is recognized as door is opened, and turn off the fan at different load. When the door is closed, the voltage goes out from R402 to Switch, the MICOM is applied with OV and the door is recognized as closed.

3)Q401 is the circuit to turn off the auger motor operation when the door is opened. If the door is closed, Vcc voltage of R402 works as ground via door switch, OV is applied to the base of Q401, and Q401 becomes operable, Vcc voltage on "A" part Q702 base works as emitter on Q401 collector and creates OV. (Check the operable condition for other parts at load terminals)

4)Condition for door open is the opposite of condition 3 above.

	Category	Door	DOOR S/W Contact Point	MICOM PORT NO	MICOM INPUT

	F	CLOSE	CLOSE	#50	"LOW"
	F	OPEN	OPEN	#50	"HIGH"
		OPEN	OPEN		"HIGH"
	R	CLOSE	CLOSE	#49	"LOW"

		OPEN	OPEN		"HIGH"
		OPEN	OPEN		"HIGH"

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Contents RS2*3* RS2*2* RS2*1 SAMSUNG Home Appliance ServiceModel SIDE-BY-SIDEREFRIGERATORIMPORTANT SAFETY NOTICE Technical Service Guide CopyrightSAMSUNG ELECTRONICS AMERICA, INC Contents 1. Safety Instructions on Service LIMITED WARRANTY TO ORIGINAL PURCHASER 2. Warranty informationSAMSUNG REFRIGERATOR One 1 Year Parts and Labor on Refrigerator3-2Freezer Disassembly 3. Mechanical Disassembly3-1Refrigerator Disassembly 3-3Machine Compartment DisassemblyDoor Handle Refrigerator Door Light SwitchControl Panel Door GasketTempered Glass Shelf Mechanical DisassemblyRefrigerator Light Gallon Door BinTwin cool in the Refrigerator Damper in the RefrigeratorRefrigerator Thermistor Mechanical DisassemblyDoor Bin in Freezer Freezer Door Light SwitchPlastic Wire Drawer in Freezer Freezer ShelfIce Dispenser & Ice Maker Auger Motor CaseMechanical Disassembly Evaporator Cover in Freezer Freezer LightEvaporator Fan Motor Mechanical DisassemblyFreezer Thermistor Evaporator in FreezerIce-MakerThermistor Mechanical DisassemblyCondenser Fan Machine Compartment ＆ Electric BoxWater Solenoids Condenser4. CIRCUIT DIAGRAM 5-1POWER 5. OPERATION PRINCIPLES BY PARTS OF CIRCUIT5-2OSCILLATION CIRCUIT 5-3RESET CIRCUIT OPERATION PRINCIPLES BY PARTS OF CIRCUIT5-4EEPROM DETECTION CIRCUIT Category 5-5DOOR SWITCH DETECTON CIRCUITOPERATION PRINCIPLES BY PARTS OF CIRCUIT Door5-6TEMP SENSING CIRCUIT OPERATION PRINCIPLES BY PARTS OF CIRCUITSensor CHIP PX41C Standard OPERATION PRINCIPLES BY PARTS OF CIRCUITTemp to Resistance of Sensor & MICOM PORT Voltage TempOPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-7DAMPER CIRCUIT5-8DISPLAY Circuit 1 KEY SCANOPERATION PRINCIPLES BY PARTS OF CIRCUIT 2 DISPLAY OPERATIONGRID WAVE PATTERN 5-9Load Control Circuit OPERATION PRINCIPLES BY PARTS OF CIRCUIT5-10ICE MAKER OPERATION CIRCUIT OPERATION PRINCIPLES BY PARTS OF CIRCUIT5-11OPTION Circuit OPERATION PRINCIPLES BY PARTS OF CIRCUIT6. Illustrated Parts Catalog 6-1FreezerIllustrated Parts Catalog 6-2RefrigeratorIllustrated Parts Catalog 6-3Cabinet6-4Disassembly of Freeze Door Illustrated Parts Catalog6-5Disassembly of Refrigerator Door Illustrated Parts CatalogLOAD Appendix ⅠReference for circuit diagnosticsRef.1 Measure Load Terminals DEFECTSAppendix ⅠReference for circuit diagnostics Ref.2 Check SENSORELECTRONICS 272, Oseon-Dong, Kwangsan-Gu Kwangju-City,KoreaTEL 82-62-950-6810,6811 FAX