Samsung SR-65NMC, SR-65KTC, SR-69NMC, SR-61KTC, SR-61NMC specifications BLDC MOTOR Operation Circuit

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8. BLDC MOTOR Operation Circuit

8. BLDC MOTOR Operation Circuit

1)Operate description of BLDC MOTOR First, if FAN became before operate condition of FANMOTOR, condition of in the temp. are high temp. more than FAN of recently institutionn NOTCH is operated condition.

ex)CONNECTOR CN 70’S third voltage : Input VL, Vcc 5V(Used Diode regard DROP)

Perated High RPM
V L = Gain * Ei
Gain = (R705+R704)/R704	Ei = R703/(R701+R703) * Vcc
= (20K + 10K)/10K	= 10K/(820 + 10K)*4.4
=3	= 4.07

V L = 4.07*3=12.24 (Change it for resistance error)

1-1) FANMOTOR in the freezer(F-FAN)

A. If refrigerator’s power is confimated, check the temp. of F-FAN and temp. more than F-FAN on is operated“HIGH RPM”to sign of MICOM #13 PORT. After arrived FAN OFF, if FAN is OFF and separate function of ON.OFF isn’t confimated always NICOM #12 PORT is confimate sign and operated“LOW RPM”

B“. HIGH RPM”is determinated the resistance of R701, LOW RPM is determinated the resistance of R702. C. When check RPM, check the wire to resistance of R715 and it is knew to MOTOR RPM.(wire *4)

D. Operated condition to Motor is received wire sign to MICOM #7 PORT but if it isn’t regular wire, FAN is stopped and operate again after 5 minutes.

※When power freeze and forced operation, always operated“HIGH RPM”without temp. of freezer.

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Contents SR-69NMC CONTENTSModel SR-61KTC/SR-61NMC SR-65KTC/SR-65NMC REFRIGERATOR1. Product specifications Warning/Caution Description of symbols2.Safety precautions and warnings ProhibitionProhibition ProhibitionProhibition RetedTEMPERATURE DEFROST REFRIGERATION PARTS3. ELECTRIC PARTS STANDARD ELECTRIC PARTS 4-2SEMI BASIC SR-61NMC,65NMC, 69NMC 4. Electric diagram4-1.Electronic modeSR-61KTC,65KTCT 5. Cool Air Circulation SR-61NMC 6. FUNCTIONS AND DIRECTIONSMODEL SR-69NMCCHILLED ROOM SHELF 6-2.THE NAME OF EACH PARTS AND DISASSEMBLE METHODDOOR GUARD DID CASE6-3.CYCLE OF FREEZING －11－7. TEMPERATURE CONTROL AND THE OTHERS 3.Alarming 3Forced operating and defrosting“ Beep”sound 5.SELF DIAGNOSIS 6.LOAD STATUS DISPLAY 7.operating of fan motor ※Personal Informatin －18－7-2,SEMI ELECTRONIC MODE D. TEST FUNCTION Page 8. CIRCUIT OPERATING THEORY 4.DOOR S/W SENSING PART 5. TEMP·SENSING PART LOAD 7. COMP AND DEFROSTING HEATER OPERATINGSTATES REMARK8. BLDC MOTOR Operation Circuit 1-2FAN MOTOR IN THE FREEZER R-FAN STANDARD 9. POTION PART 1PRINCIPIE OF MAVEMENTNAME REMARK8-2.SEMI ELECTROMAGNETIC 9-1.POWER PART 9-3.RESET CIRCUIT PART 9-5.TEMP. CONTROL CIRCUIT.ROTARY S/W S/Wcircuit ①~⑩ B. REFRIGERATOR TEMP ※ CAUTIONIt is appeared the S/W cross spot of ROTARY －31－6. ELECRICAL LOAD SIGNAL LAMP CONTROL PART －32－B. MOVEMENT PRINCIPAL ※PERSANAL INFORMA －34－MODEL NAME Remark1.No input Power 9.Diagnosis of disorder and method of repair1.Check the power of consent and power code 1.ELECTRICAL SR-61KTC,65KTC②Refrigerator temp, sensor failure 2.Self diagnosis failureOuter temper ature sensor failure －37－Freezer tem sensor failare －38－Freezer’s defrosting sensor failure －39－3. In case of contiunous alarming REFRENCES ②In case of“Beep-Beep”alarming 4. In case of FAN do not run REFRENCES ①In case of F-FANdoesn’t run Run the DC voltage －43－－44－ the MOTOR Check the MOTOR Chang the MOTOR －45－Forced operation Check CON70 connection check 2.SENMI electronic mode SR-61NMC,65NMC 9. Diagnosis of disorder and method of repair1.When not operating Power －46－B. Refrigerator’s temp, senser failure 2. Self diagnosis failureA. Freezer’s temp·sensor failure －47－－48－ C. Freezer’s defrosting sensor failureD. Refrigerator’s defrosting sensor failure 3.In case of FAN in the refrigerator doern’t run B. In case of R-FANdo not run ①Check －50－Is proper the retrigerators temp·regulator? ②Check ROTARY S/W－51－ 4.Badress management of freeze cycle Appearance 10-1.Freezer comoartmentSR-61KTC,65KTC －53－10-2.Freezer compartment SR61NMC,65NMC,69NMC 10-3.Refrigerator Compartment SR-61KTC,65KTC －55－THERMO-FUSE,ASSY SENSOR-ASSY EVAP-REF CHASSIC-COMPASSY HING-MID-ASSY CHASSIC-COMPASSYCASE-DLSPLAY,ASSY 10-7.Related Components of DOORHANDLE-FRE,ASSY HANDLE-REF,ASSY1.Disassemble lathch the top cover of refrigerator SR-61KTC SR-61/65/69NMC 11-2.Replacement of freezer in door lamp11-3.Replacement of refrigerator in door lamp 1Remove the back cover lamp and then in door lamp2Remove foods and shelves inside the Refrigerator 11-4.Disassemble of refrigerator cooling part1 Push the cold storage and remove it la tch Remove 2 screwsTemp·fuse Temp·sensor Groove for preventing small ice when defrosting2 holders securing evaporator CABLE TIE FOAM-LEX Noise protector1 Pull out the shelf 1 Disassembie inner lower GROMMET of DID door Assembly specifcation of Freezer cooler part11-6.Disjonting of DID door 2 Disassemble DID door with up the iower HINGEPace condenser Pace condenser entrance 11-7.Unit assemblyMotor fan Hot pipe entrance S-PIPE Condenser entrance Rubber for Noise protector3.Assembly specification of electric box TEST S/W 11-8.Electric box assembly1.Disconnect the power cord Condenser3.Assembly specification of electric box TEST S/W 11-9.Electric box assembly1.Disconnect the power cord FUSE Condenser TRANS-POWERPACKING EXAMPLE OF FRONT SIDE AND BACK SIDE 12. PACKINGPACKING OF DOOR AND CABINET EXAMPLE OF PERFECT PACKINGCircuit way 13. Main Components Specifacations FEATURESBLOCK DIAGRAM ORDERING INFORMATIONELECTRICAL CHARACTERISTICS KA7805/I ABSOLUTE MAXIMUM RATINGS TA =ELECTRICAL CHARACTERISTICS KA7812/I Checking low battery 3.3V VOLTAGE DETECTORFEATURES BLOCK DIAGRAMABSOLUTE MAXIMUM RATING TA = ELECTRICAL CHARACTERISTICS TA =8-CHANNELSOURCE DIRVERS FEATURES2981THRU ABSOLUTE MAXIMUM RATINGSFOR SAFETY OF SERVICE CAUTION TEL 82-62-950-6810,6811 FAX ELECTRONICS272, Oseon-Dong, Kwangsan-Gu Kwangju-City,Korea