Sharp R-9H58 Service Manual Page 1

R-9H58TABLE OF CONTENTSPageCAUTION, MICROWAVE RADIATION ...

R-9H5882. The fuse also blows when upper latch switch andlower latch switch remain closed with the oven dooropen and when the monitor switch closes.3.

R-9H589It is then exhausted at the top of the oven cavity into acondensation compartment.Convection Cooking:Damper is in the closed position, so that

R-9H5810SERVICING WARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of producing very high voltage and current, contact with any p

R-9H5811Home fuse blows whenpower supply cord is pluggedinto wall outlet.Fuse M8A blows when powercord is plugged into wall out-let.Display does not s

R-9H5812TEST PROCEDURESPROCEDURELETTERCOMPONENT TESTA MAGNETRON TESTNEVER TOUCH ANY PART IN THE CIRCUIT WITH YOUR HAND OR AN INSULATED TOOLWHILE THE O

R-9H5813TEST PROCEDURESPROCEDURELETTERCOMPONENT TESTInitial temperature...

R-9H5814TEST PROCEDURESPROCEDURELETTERCOMPONENT TESTrectifier, high voltage wire or filament winding of the power transformer is shorted.CARRY OUT 4R

R-9H5815TEST PROCEDURESPROCEDURELETTERCOMPONENT TESTCARRY OUT 3D CHECKS.Disconnect connector-E from the CPU unit. Measure the resistance of the thermi

R-9H5816TEST PROCEDURESPROCEDURELETTERCOMPONENT TESTIf incorrect readings are obtained, replace the motor.CARRY OUT 4R CHECKS.CARRY OUT 3D CHECKS.Disc

R-9H5817TEST PROCEDURESPROCEDURELETTERCOMPONENT TEST2-3 Other possible troubles caused by defective control unit.a) Buzzer does not sound or continues

R-9H58

R-9H5818STEPS OCCURRENCE CAUSE OR CORRECTION1 The rated voltage is not applied between Pin Check supply voltage and oven power cord.No. 9 of the 5-pin

R-9H5819TESTING METHOD FOR AH SENSOR AND/OR CONTROL UNITTo determine if the sensor is defective, the simplest method is to replace it with a new repla

R-9H5820TOUCH CONTROL PANEL ASSEMBLYOUTLINE OF TOUCH CONTROL PANELThe touch control section consists of the following unitsas shown in the touch contr

R-9H5821DESCRIPTION OF LSILSI(IZA736DR):The I/O signals of the LSI(IZA736DR) are detailed in the following table.Pin No. Signal I/O DescriptionP03ß(50

R-9H5822Pin No. Signal I/O DescriptionVARI MODE ON TIME OFF TIMEHIGH (100% power) 32 sec. 0 sec.MED HIGH (approx. 70% power) 24 sec. 8 sec.MED (approx

R-9H582335 P25 IN Signal similar to P27.When any one of G-3 line key on key matrix is touched, a corresponding signal willbe input into P25.36 P24 IN

R-9H5824Pin No. Signal I/O Description54-56 P02-P00 OUT Digit selection signal.Signal similar to P55.57-59 P37-P35 OUT Digit selection signal.Signal s

R-9H5825SERVICING1. Precautions for Handling Electronic ComponentsThis unit uses CMOS LSI in the integral part of thecircuits. When handling these par

R-9H5826COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDUREWARNING: Avoid possible exposure to microwave energy. Please follow the instructions below befor

R-9H58271. CARRY OUT 3D CHECKS.2. Remove one (1) screw holding the high voltage rectifierterminal to the capacitor holder.3. Disconnect the high volta

R-9H581SERVICE MANUALCONVECTIONMICROWAVE OVENR-9H58GENERAL IMPORTANT INFORMATIONThis Manual has been prepared to provide Sharp Corp. Serviceengineers

R-9H58283. Disconnect wire lead from the turntable motor.4. Remove the two (2) screws holding the turntable motorto the mounting plate of the oven cav

R-9H58291. Remove the one (1) special screw holding the cordholder to the rear cabinet, using the special driverLHSTIX DLR4-100T.2. Now, the cord hold

R-9H5830Remove door assembly, refer to “Door Replacement”.Replacement of door components are as follows:1. Place door assembly on a soft cloth with la

R-9H5831MICROWAVE MEASUREMENTAfter adjustment of door latch switches, monitor switchand door are completed individually or collectively, thefollowing

R-9H5832NOTE: indicates components with potential above 250V.SCHEMATICNOTE: CONDITION OF OVEN1. DOOR CLOSED.2. CLOCK APPERARS ON DISPLAYFigure O-1.

R-9H5833NOTE: indicates components with potential above 250V.SCHEMATICNOTE: CONDITION OF OVEN1. DOOR CLOSED.2. CONVECTION PAD TOUCHED.3. DESIRED TE

R-9H5834645123645123ABCDEFGHABCDEFGHFigure S-1. Pictorial DiagramHV. RECTIFIERO RGASYMMETRIC RECTIFIERMAGNETRONREDREDHV. WIRE AREDGRYHIGH VOLTAGE

R-9H5835645123645123ABCDEFGHABCDEFGHFigure S-2. Contrl Panel Circuit+–+–+–+–+–+–A9A7A1A3A5E1 E2 E5 E6 E3 E4 F1 F2 F3G 1G 2G 3G 4G 5 G 6 G 7 G 8 G 9 G1

R-9H5836645123645123ABCDEFGHABCDEFGHFigure S-3. Printed Wiring BoardRR0 121311111165432111357 945 783314581212123233 64346913CONVHEATERCOMRED BRNORGB

R-9H5837PARTS LISTNote: The parts marked "∆" may cause undue microwave exposure.The parts marked "*" are used in voltage more than

R-9H582PRODUCT SPECIFICATIONSITEM DESCRIPTIONPower Requirements 230 - 240 Volts50 HertzSingle phase, 3 wire earthedPower Consumption 1500 W (Microwave

R-9H5838Note: The parts marked "∆" may cause undue microwave exposure.The parts marked "*" are used in voltage more than 250V.REF.

R-9H5839Note: The parts marked "∆" may cause undue microwave exposure.The parts marked "*" are used in voltage more than 250V.REF.

R-9H5840HOW TO ORDER REPLACEMENT PARTSTo have your order filled prompty and correctly, please furnish the following information.1. MODEL NUMBER 2. REF

R-9H5841645123645123ABCDEFGHABCDEFGHOVEN AND CABINET PARTS1-13 1-77-297-107-207-19A7-17-291-224-37-224-334-424-277-25x21-167-11TO OVEN BASE PLATE7-44

R-9H5842645123645123ABCDEFGHABCDEFGH'96SHARP CORP. (8K0.820E) Printed in AustraliaCONTROL PANEL PARTSDOOR PARTSMISCELLANEOUS5-15-107-175-55-37-25

R-9H583APPEARANCE VIEW1. Ventilation opening2. Oven lamp3. Door hinges4. Door safety latches5. See through door6. Door seal and sealing surfaces7. Doo

R-9H584The following is a description of component functionsduring oven operation.Relay and Components ConnectionRELAY CONNECTED COMPONENTRY1 Oven lam

R-9H585unit de-energizing the relay (RY4) and opening thecircuit to the damper motor.3. The coil of heater relay (RY3) is energized by the CPUunit and

R-9H586MICROWAVE2. Heat potatoes. Moisture and humidity is emitted rapidly.You can smell the aroma as it cooks. ;MICROWAVEAH SENSOR3. Sensor detects m

R-9H587UPPER AND LOWER LATCH SWITCHESThose latch switches are mounted in the latch hooks asshown in figure. They are activated by the latch heads onth