Samsung RS23 manual Operation Principles By Parts Of Circuit, 5-1POWER, 5-2OSCILLATION CIRCUIT

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5. OPERATION PRINCIPLES BY PARTS OF CIRCUIT

5-1) POWER
Terminal	Oscillation Frequency
● Vcc(DC 5V)	MICOM POWER AND SENSORS
<< BLDC	BLDC MOTOR POWER(NOT USE)
+12V(DC 12V)	RELAY,PANEL POWER

●When turned on, rectified AC voltage which is stepped down on 2nd transformer flows between ① and ③ at about AC 15V, goes through the diode D101 and D104 is changed to DC, and provide constant 12V. It provides 5V to MICOM and other circuits via regulator REG102 (MC7805ACT), and make entire PCB operate.

5-2) OSCILLATION CIRCUIT

Terminal	Oscillation Frequency

Xin(#19)	8.0MHz

Xout(#18)	8.0MHz

●It is an Oscillation Circuit for synchronism clock generation and time calculation on the information sending & receiving of the MICOM internal logic elements and when specifications for Resonator change, the timing system of MICOM changes resulting in errors. (Rated parts must be used)

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Contents SAMSUNG Home Appliance Service ModelRS2*3* RS2*2* RS2*1 SIDE-BY-SIDEREFRIGERATORTechnical Service Guide Copyright IMPORTANT SAFETY NOTICESAMSUNG ELECTRONICS AMERICA, INC Contents 1. Safety Instructions on Service 2. Warranty information SAMSUNG REFRIGERATORLIMITED WARRANTY TO ORIGINAL PURCHASER One 1 Year Parts and Labor on Refrigerator3. Mechanical Disassembly 3-1Refrigerator Disassembly3-2Freezer Disassembly 3-3Machine Compartment DisassemblyRefrigerator Door Light Switch Control PanelDoor Handle Door GasketMechanical Disassembly Refrigerator LightTempered Glass Shelf Gallon Door BinDamper in the Refrigerator Refrigerator ThermistorTwin cool in the Refrigerator Mechanical DisassemblyFreezer Door Light Switch Plastic Wire Drawer in FreezerDoor Bin in Freezer Freezer ShelfAuger Motor Case Ice Dispenser & Ice MakerMechanical Disassembly Freezer Light Evaporator Fan MotorEvaporator Cover in Freezer Mechanical DisassemblyEvaporator in Freezer Ice-MakerThermistorFreezer Thermistor Mechanical DisassemblyMachine Compartment ＆ Electric Box Water SolenoidsCondenser Fan Condenser4. CIRCUIT DIAGRAM 5. OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-1POWER5-2OSCILLATION CIRCUIT OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-3RESET CIRCUIT5-4EEPROM DETECTION CIRCUIT 5-5DOOR SWITCH DETECTON CIRCUIT OPERATION PRINCIPLES BY PARTS OF CIRCUITCategory Door5-6TEMP SENSING CIRCUIT OPERATION PRINCIPLES BY PARTS OF CIRCUITOPERATION PRINCIPLES BY PARTS OF CIRCUIT Temp to Resistance of Sensor & MICOM PORT VoltageSensor CHIP PX41C Standard Temp5-7DAMPER CIRCUIT 5-8DISPLAY CircuitOPERATION PRINCIPLES BY PARTS OF CIRCUIT 1 KEY SCAN2 DISPLAY OPERATION OPERATION PRINCIPLES BY PARTS OF CIRCUITGRID 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 CatalogAppendix ⅠReference for circuit diagnostics Ref.1 Measure Load TerminalsLOAD DEFECTSAppendix ⅠReference for circuit diagnostics Ref.2 Check SENSOR272, Oseon-Dong, Kwangsan-Gu Kwangju-City,Korea ELECTRONICSTEL 82-62-950-6810,6811 FAX

5. OPERATION PRINCIPLES BY PARTS OF CIRCUIT

5-1) POWER

5-2) OSCILLATION CIRCUIT