Sharp R-340A Wartungshandbuch

R-340ASHARP CORPORATION SERVICE MANUALS7717R340APHRMICROWAVE OVENMODEL R-340AIn interests of user-safety the oven should be restored to itsoriginal c

R-340A8TEST PROCEDURESPROCEDURELETTERCOMPONENT TESTA MAGNETRON TESTNEVER TOUCH ANY PART IN THE CIRCUIT WITH YOUR HAND OR AN INSULATED TOOLWHILE THE OV

R-340A9Initial temperature... T1 = 11°CTemperature after (4

R-340A10TEST PROCEDURESPROCEDURELETTERCOMPONENT TESTCARRY OUT 3D CHECKS.A. Isolate the high voltage capacitor from the circuit.B. Continuity check mus

R-340A11TEST PROCEDURESPROCEDURELETTERCOMPONENT TESTCARRY OUT 3D CHECKS.Disconnect the leads from the motor.Using an ohmmeter, check the resistance be

R-340A12TEST PROCEDURESPROCEDURELETTERCOMPONENT TESTL TOUCH CONTROL PANEL ASSEMBLY TESTThe touch control panel consists of circuits including semicond

R-340A13To protect the electronic circuits, this model is provided with a fine foil pattern added to the primaryon the PWB, this foil pattern acts as

R-340A14The touch control section consists of the following units.(1) Key Unit(2) Control Unit (The Control Unit consists of Power Unitand CPU Unit).T

R-340A15Pin No. Signal I/O Description13 P55 OUT Terminal not used.14 P54 OUT Signal to sound buzzer (2.0 kHz).A: key touch sound.B: Completion sound.

R-340A16Pin No. Signal I/O Description36 P24 OUT Key strobe signal.Signal applied to touch-key section. A pulse signal is input to P44 - P47 terminalw

R-340A171. Precautions for Handling Electronic ComponentsThis unit uses CMOS LSI in the integral part of thecircuits. When handling these parts, the f

R-340A

R-340A18COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDUREWARNING: Avoid possible exposure to microwave energy. Please follow the instructions below befor

R-340A19HIGH VOLTAGE RECTIFIER, HIGH VOLTAGE FUSE AND HIGH VOLTAGE CAPACITORREMOVAL1. CARRY OUT 3D CHECKS.2. Disconnect the brown and blue wires of po

R-340A20ConnectorPower unitCPU unitSolderThese should be parallelFigure C-3. Side view of CPU unit and Power unitHandle the CPU unit carefully so that

R-340A21* Do not disfigure the bracket by touching with thepliers.2) Remove the fan blade from the shaft of the fan motorby pulling and rotating the f

R-340A221ST. LATCH SWITCH, 2ND. INTERLOCK RERAY CONTROL SWITCH AND MONITOR SWITCH ADJUSTMENTIf each switch does not operate properly due to amisadjust

R-340A2334View; front side of door frame19.Now, door screen is free.RE-INSTALL1. Re-install door screen to door frame by reversing theprocedure of ite

R-340A24MICROWAVE MEASUREMENTAfter adjustment of door latch switches, monitor switchand door are completed individually or collectively, thefollowing

R-340A25SCHEMATICNOTE: CONDITION OF OVEN1.DOOR CLOSED2.CLOCK APPEARS ON DISPLAYNOTE: " " indicates components with potentials above 250V.SCH

R-340A26645123645123ABCDEFGHABCDEFGHFigure S-1. Pictorial DiagramHIGH VOLTAGE COMPONENTSOVEN LAMP AND SOCKETCOM.MONITORSWITCHCOM.N.O.N.C.1ST LATCH

R-340A27645123645123ABCDEFGHABCDEFGHFigure S-2. Power unit Circuit+–+–A 3C 1C 2C 3C 4C 5C 6C 7C 8C 9B 1B 2T1MICRONOTE: IF NOT SPECIFIED, 1/4w ± 5%:

R-340A1SERVICE MANUALMICROWAVE OVENR-340AGENERAL IMPORTANT INFORMATIONThis Manual has been prepared to provide Sharp Corp. Serviceengineers with Opera

R-340A28645123645123ABCDEFGHABCDEFGH282927 C 1C 2C 326 C 025 S1624 S1523 S1422 S1321 S1220 S1119 S1018 S 917 S 816 S 715 S 614 S 513 S1912 S2011 S2110

R-340A29645123645123ABCDEFGHABCDEFGHFigure S-4. Printed Wiring Board000LD1 LD2 LD3 LD4 LD5WH-1SH-A (GREEN)SH-B(R2/J4)Q2(Q1)C5T161(1) (3)3(7) (4)4RY1RY

R-340A30***∆*∆**∆∆PARTS LISTNote: The parts marked "∆" may cause undue microwave exposure.The parts marked "*" are used in voltage

R-340A31Note: The parts marked "∆" may cause undue microwave exposure.The parts marked "*" are used in voltage more than 250V.REF.

R-340A32645123645123ABCDEFGHABCDEFGHOVEN AND CABINET PARTS7-57-57-57-42-14-187-24-167-31-57-66-27-31-11-14-11-154-81-74-47-57-67-17-56-54-37-66-17-17-

R-340A33645123645123ABCDEFGHABCDEFGHCONTROL PANEL PARTSDOOR PARTS5-25-85-55-15-35-75Actual wire harness may be different from illustration.6-35-45-93

R-340A34'97SHARP CORP. (7K0.120E) Printed in JapanPACKING AND ACCESSORIESDOOR PROTECTION SHEETSPADPA204WRE0TOP PAD ASSEMBLYFPADBA311WRK0PLASTIC

R-340A2ITEM DESCRIPTIONPower Requirements 220 Volts50 HertzSingle phase, 3 wire earthedPower Consumption 1.5kWPower Output 1000 watts nominal of RF m

R-340A3APPEARANCE VIEW1. Ventilation openings2. Oven lamp3. Door hinges4. Door safety latches5. See through door6. Door seals and sealingsurfaces7. Co

R-340A4OPERATION SEQUENCEOFF CONDITIONClosing the door activates all door interlock switches (1st.latch switch and 2nd. interlock relay control switch

R-340A5FUNCTION OF IMPORTANT COMPONENTSDOOR OPEN MECHANISMThe door is opened by pushing the open button on thecontrol panel, refer to the Figure D-1.W

R-340A6SERVICINGWARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of producing very high voltage and current, contact with followi

R-340A7MAGNETRONPOWER TRANSFORMERH.V. RECTIFIER ASSEMBLYHIGH VOLTAGE CAPACITOR1ST. LATCH SWITCH2ND. INTERLOCK RELAY CONTROL SWITCHMONITOR SWITCHMONITO