Sharp R-3A88 Wartungshandbuch

R-3A88SHARP CORPORATION SERVICE MANUALIn interests of user-safety the oven should be restored to its originalcondition and only parts identical to th

R-3A888TEST PROCEDURESPROCEDURELETTERCARRY OUT 3D CHECK.Isolate the magnetron from high voltage circuit by removing all leads connected to filament te

R-3A889TEST PROCEDURESPROCEDURELETTERCOMPONENT TEST6. Measure the final water temperature. (Example: The final temperature T2 = 21°C)7. Calculate the

R-3A8810TEST PROCEDURES (CONT'D)PROCEDURELETTERCOMPONENT TESTBCHIGH VOLTAGE RECTIFIERCARRY OUT 4R CHECKS.NOTE: FOR MEASUREMENT OF THE RESISTANCE

R-3A8811PROCEDURELETTERCOMPONENT TESTTEST PROCEDURES (CONT'D)CARRY OUT 3D CHECKS.Disconnect the leads from the monitor resist. Using an ohmmeter

R-3A8812TEST PROCEDURES (CONT'D)PROCEDURELETTERCOMPONENT TEST2-2 In connection with indicatorsa) At a certain digit, all or some segments do not

R-3A8813TEST PROCEDURES (CONT'D)PROCEDURELETTERCOMPONENT TESTRELAY SYMBOL OPERATIONAL VOLTAGE CONNECTED COMPONENTSRY1 APPROX. 25.0V D.C. Oven lam

R-3A8814TOUCH CONTROL PANEL ASSEMBLYOUTLINE OF TOUCH CONTROL PANELThe touch control section consists of the following unitsas shown in the touch contr

R-3A8815DESCRIPTION OF LSILSI(IZA683DR)The I/O signal of the LSI(IZA683DR) are detailed in the following table.Pin No. Signal I/O Description1 Vdisp I

R-3A8816Pin No. Signal I/O Description25 BUZZ OUT Signal to sound buzzer.A: key touch sound (0.12 sec.).B: Completion sound (2.4 sec.).26-27 D4-D5 OUT

R-3A8817SERVICING1. Precautions for Handling Electronic ComponentsThis unit uses CMOS LSI in the integral part of the circuits.When handling these par

R-3A88

18R-3A88COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDUREWARNING: Avoid possible exposure to microwave energy. Please follow the instructions below befor

19R-3A88plate right.4. Remove transformer from bottom plate right.5. Remove the one (1) terminal insulator from filament lead(longer one) of power tra

20R-3A88CoilGapRotorBracketStatorGroove joint pliersShaftAxisStatorThese are the positionwhere should bepinched with pliersRotorSide ViewRear ViewShaf

21R-3A88OVEN 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-3A88should be less than 0.5mm. The vertical position of thelatch hook should be adjusted so that the 1st. latchswitch 2nd. interlock relay control

23R-3A88Note: After any service to the door;(A) Make sure that door sensing switch and secondaryinterlock switch are operating properly. (Refer tochap

24R-3A88MICROWAVE MEASUREMENTAfter adjustment of door latch switches, monitor switchand door are completed individually or collectively, thefollowing

25R-3A88SCHEMATICNOTE: CONDITION OF OVEN1.DOOR CLOSED2.CLOCK APPEARS ON DISPLAYNOTE: " " indicates components with potentials above 250V.Fig

26R-3A88645123645123ABCDEFGHABCDEFGHFigure S-1. Pictorial DiagramHIGH VOLTAGE COMPONENTSOVEN LAMP AND SOCKETCOM.MONITORSWITCHCOM.N.O.N.C.2ND INTERLO

27R-3A88645123645123ABCDEFGHABCDEFGHFigure S-2. Contrl Panel Circuit+-+-+-+-5432 10987 6A3A5A1COMNOB2B1AC220V 50HzFAN MOTORTURNTABLEMOTOR

R-3A881SERVICE MANUALPRODUCT SPECIFICATIONSSHARP CORPORATIONOSAKA, JAPANTEST PROCEDURESERVICING ANDTROUBLESHOOTING CHARTFUNCTION OF IMPORTANTCOMPONENT

28R-3A88645123645123ABCDEFGHABCDEFGHFigure S-3. Printed Wiring BoardQ22303233 34C21 36RY1C10C2D20QKITPB014MRE0FLR. DISPLAYTAPE10 15 20 25 28111111345

29R-3A88PARTS LISTNote: The parts marked "∆" may cause undue microwave exposure.The parts marked "*" are used in voltage more than

30R-3A88Note: The parts marked "∆" may cause undue microwave exposure.The parts marked "*" are used in voltage more than 250V.REF.

31R-3A88HOW TO ORDER REPLACEMENT PARTSTo have your order filled prompty and correctly, please furnish the following information.1. MODEL NUMBER 2. REF

32R-3A88645123645123ABCDEFGHABCDEFGHOVEN 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-3A88645123645123ABCDEFGHABCDEFGHDOOR PARTSCONTROL PANEL PARTS3- 13-2-13- 33- 43- 23- 5Actual wire harness may be different from illustration.6-46-

34R-3A88'96SHARP CORP. (3U0.07E) Printed in Japan

R-3A882PRODUCT SPECIFICATIONSITEM DESCRIPTIONPower Requirements 220 Volts50 HertzSingle phase, 3 wire earthedPower Consumption 1.35 kWPower Output 850

R-3A883APPEARANCE VIEWTOUCH CONTROL PANELa HELP PADTouch to select child lock, language or demonstration modes.Touch to get cooking information.b REHE

R-3A884OPERATION SEQUENCEOFF CONDITIONClosing the door activates all door interlock switches (1st.latch switch and 2nd. interlock relay control switch

R-3A885FUNCTION OF IMPORTANT COMPONENTSDOOR OPEN MECHANISMThe door is opened by pushing the open button on thecontrol panel, refer to the Figure D-1.W

R-3A886SERVICING WARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of producing very high voltage and current, contact with any pa

R-3A887MAGNETRONPOWER TRANSFORMERH.V. RECTIFIER ASSEMBLYHIGH VOLTAGE CAPACITOR1ST. LATCH SWITCH2ND. INTERLOCK RELAYCONTROL SWITCHMONITOR SWITCHMONITOR