Sharp R-3S68 Servisní příručka

R-3S68SHARP CORPORATION SERVICE MANUALIn interests of user-safety the oven should be restored to its originalcondition and only parts identical to th

R-3S688TEST PROCEDURESPROCEDURELETTERCARRY OUT 3D CHECK.Isolate the magnetron from high voltage circuit by removing all leads connected to filament te

R-3S689TEST PROCEDURESPROCEDURELETTERCOMPONENT TEST6. Measure the final water temperature. (Example: The final temperature T2 = 21°C)7. Calculate the

R-3S6810TEST PROCEDURES (CONT'D)PROCEDURELETTERCOMPONENT TESTBCHIGH VOLTAGE RECTIFIERCARRY OUT 4R CHECKS.NOTE: FOR MEASUREMENT OF THE RESISTANCE

R-3S6811PROCEDURELETTERCOMPONENT TESTTEST PROCEDURES (CONT'D)CARRY OUT 3D CHECKS.Disconnect the leads from the monitor resist. Using an ohmmeter

R-3S6812TEST PROCEDURES (CONT'D)PROCEDURELETTERCOMPONENT TEST2-2 In connection with indicatorsa) At a certain digit, all or some segments do not

R-3S6813TEST PROCEDURES (CONT'D)PROCEDURELETTERCOMPONENT TESTNOTE: At the time of these repairs, make a visualinspection of the varistor for burn

14R-3S68Control UnitControl unit consists of tact switches, LSI, power sourcecircuit, synchronizing signal circuit, ACL circuit, buzzercircuit and ind

15R-3S681 XOUT OUT Internal clock oscillation frequency control output.Output to control oscillation input of XOUT.2 XIN IN Internal clock oscillation

16R-3S68Pin No. Signal I/O Description19 R63 OUT Segment data signal.Signal similar to R70.Switch strobe signal.Signal applied to tact switch section.

17R-3S68SERVICING1. Precautions for Handling Electronic ComponentsThis unit uses CMOS LSI in the integral part of thecircuits. When handling these par

R-3S68

18R-3S68COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDUREWARNING: Avoid possible exposure to microwave energy. Please follow the instructions below befor

19R-3S68Re-install1. Insert tube into filament lead (longer one) of powertransformer.2. Install the terminal insulator to receptacle of filamentlead (

20R-3S68TURNTABLE MOTOR REMOVALCoilGapRotorBracketStatorGroove joint pliersShaftAxisStatorThese are the positionwhere should bepinched with pliersRoto

21R-3S68OVEN LAMP AND LAMP SOCKET REMOVALFigure C-3. Oven lamp socket1. CARRY OUT 3D CHECKS.2. Pull the wire leads from the oven lamp socket by pushi

22R-3S68latch hook should be adjusted so that the 1st. latchswitch 2nd. interlock relay control switch are activatedwith the door closed. The horizont

23R-3S68Note: After any service to the door;(A) Make sure that door sensing switch and secondaryinterlock switch are operating properly. (Refer tochap

24R-3S68MICROWAVE MEASUREMENTAfter adjustment of door latch switches, monitor switchand door are completed individually or collectively, thefollowing

25R-3S68SCHEMATICNOTE: CONDITION OF OVEN1.DOOR CLOSED2.CLOCK APPEARS ON DISPLAYNOTE: " " indicates components with potentials above 250V.Fig

26R-3S68645123645123ABCDEFGHABCDEFGHFigure S-1. Pictorial DiagramOVEN LAMP AND SOCKETCOM.COM.N.O.N.C.2ND INTERLOCKRELAY CONTROLSWITCH1ST LATCHSWI

27R-3S68645123645123ABCDEFGHABCDEFGHFigure S-2. Contrl Panel Circuit+–+–+–+–+–+–A3A5A1COMNOB1B2AC220V50HzOVEN LAMPTURNTABLEMOTORFAN MOTORPOWERTRA

R-3S681SERVICE MANUALPRODUCT SPECIFICATIONSSHARP CORPORATIONOSAKA, JAPANTEST PROCEDURESERVICING ANDTROUBLESHOOTING CHARTFUNCTION OF IMPORTANTCOMPONENT

28R-3S68645123645123ABCDEFGHABCDEFGHFigure S-3. Printed Wiring Board13 112, FLot NoR60345SW2SW1SW3D57D58R63R62R61D56EBQ6478EBQ60EEEDIP(J2)BBBQ61Q62Q6

29R-3S68PARTS LISTNote: The parts marked "∆" may cause undue microwave exposure.The parts marked "*" are used in voltage more than

30R-3S68Note: The parts marked "∆" may cause undue microwave exposure.The parts marked "*" are used in voltage more than 250V.REF.

31R-3S68PACKING AND ACCESSORIESHOW TO ORDER REPLACEMENT PARTSTo have your order filled prompty and correctly, please furnish the following information

32R-3S68645123645123ABCDEFGHABCDEFGHOVEN AND CABINET PARTS2-17-57-57-57-57-67-61-131-124-134-124-111-47-11-37-66-107-67-36-141-91-174-27-21-51-17-64-6

33R-3S68CONTROL PANEL PARTS3-2-13- 33- 43- 23- 13- 5645123645123ABCDEFGHABCDEFGHMISCELLANEOUSDOOR PARTS5-25-35-15-55-65-75-45-95-95-85-8Actual wire ha

34R-3S68'96SHARP CORP. (3U0.07E) Printed in Japan

R-3S682PRODUCT SPECIFICATIONSITEM DESCRIPTIONPower Requirements 220 Volts50 HertzSingle phase, 3 wire earthedPower Consumption 1.37kWPower Output 850

R-3S683APPEARANCE VIEW1. Ventilation openings2. Oven lamp3. Door hinges4. Door safety latches5. See through door6. Door seals and sealingsurfaces7. Co

R-3S684OPERATION SEQUENCEOFF CONDITIONClosing the door activates all door interlock switches (1st.latch switch and 2nd. interlock relay control switch

R-3S685FUNCTION OF IMPORTANT COMPONENTSDOOR OPEN MECHANISMThe door is opened by pushing the open button on thecontrol panel, refer to the Figure D-1.W

R-3S686SERVICING WARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of producing very high voltage and current, contact with any pa

R-3S687MAGNETRONPOWER TRANSFORMERH.V. RECTIFIER ASSEMBLYHIGH VOLTAGE CAPACITOR1ST. LATCH SWITCH2ND. INTERLOCK RELAYCONTROL SWITCHMONITOR SWITCHMONITOR