Sharp R733 Schematic

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COOK & DEFR

OST

SERVICE MANUAL

COOK & DEFR

OST

GRILL AND

MICROWAVE OVEN

S04273R733EHW

R-733

MODELS

R-733(W/B) R-733(Y/LB/LG/W)F

In interests of user-safety the oven should be restored to its original condition and only parts identical to those specified should be used.

TABLE OF CONTENTS

Page

CAUTION MICROWAVE RADIATION, WARNING ............................................................. INSIDE COVER

GENERAL IMPORTANT INFORMATION .................................................................................................. 1

SERVICING ................................................................................................................................................ 2

PRODUCT SPECIFICATIONS ................................................................................................................... 5

APPEARANCE VIEW ................................................................................................................................. 6

OPERATION SEQUENCE .......................................................................................................................... 7

FUNCTION OF IMPORTANT COMPONENTS .......................................................................................... 8

TEST PROCEDURE ................................................................................................................................. 10

TOUCH CONTROL ASSEMBLY .............................................................................................................. 18

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ..................................................... 22

TEST DATA AT A GLANCE ..................................................................................................................... 26

MICROWAVE MEASUREMENT .............................................................................................................. 27

SCHEMATIC DIAGRAMS ......................................................................................................................... 28

PICTORIAL DIAGRAM ............................................................................................................................. 30

CONTROL PANEL CIRCUIT .................................................................................................................... 31

PRINTED WIRING BOARD DIAGRAM ................................................................................................... 32

PARTS LIST ............................................................................................................................................. 33

EXPLODED VIEW OF OVEN ....................................................................................................................36

CONTROL PANEL /DOOR PARTS ...........................................................................................................37

MISCELLANEOUS/PACKING AND ACCESSORIES ................................................................................ 38

SHARP CORPORATION

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CAUTION

MICROWAVE RADIATION

Personnel should not be exposed to the mircowave energy which may radiate from the magnetron or other microwave generating devices if it is improperly used or connected. All input and output microwave connections, waveguides, flanges and gaskets must be secured. Never operate the device without a microwave energy absorbing load attached. Never look into an open waveguide or antenna while the device is energised.

VARNING

MIKROVAGSSTRALING

Personal får inte utsättas för mikrovågsenergi som kan utstrala från magnetronen eller andre mikrovågsalstrande anordningar om dessa är felanslutna eller används på fel sätt. Alla in-och utgångsanslutningar för mikrovågor, vagledare, flänsar och packningar måste vara fast anslutna. Mikrovågsgeneratorn får inte arbeta utan att absorberande belastning är ansluten. Titta aldrig in i en öppen vågledare eller antenn när mikrovågsgeneratorn är påkopplad eller laddad.

VAROITUS

MIKROAALTOSATEILYA

Käyttäjä ei saa joutua alttiiksi mikroaaltoenergialle, jota voi säteillä magnetronista tai muusta mikroaaltoja kehittävästä laitteesta, jos sitä käytetään väärin tai jos se kytketään väärin. Kaikkien mikroaaltoliitäntöjen sekä syöttö-että ulostulopuolella, aaltoputkien laippojen ja tiivisteiden tulee olla varmistettuja. Mikroaaltouunia ei koskaan saa käyttää ilman kuormaa jossa mikroaaltoenergiaa kuluu. Avoimeen aaltoputkeen tai antenniin ei koskaan saa katsoa virran ollessa kytkettynä.

ADVARSEL

MIKRØBOLGESTRÅLING

Personell må ikke utsettes for mikrobølge-energi som kan utstråles fra magnetronen eller andre mikrobølge-generende deler dersom apparatet feilbetjenes eller blir feiltikoplet. Alle inn-og uttilkoplinger i forbindelse med mikrobølge-strålingen, bølgeledere, flenser og tetningsringer/pakninger må festes ordentlig. Aldri bruk apparatet med mindre en mikrobålge-absorberende last er plassert i ovnsrommet. Aldri se direkte inn i en åpen bølgeleder eller antenne imens apparatet er strømførende.

ADVARSEL

MIKRØBOLGEBESTRALING

Man bør ikke udsætte sig for mikrobølgebestråling fra magnetronen eller andre mikrobølgefrembringende anordninger, hvilket kan ske hvis apparatet er forkert tilsluttet eller bruges forkert. Alle mikrobølgeindgange og-udgange, bølgeledere, flanger og tætningsstrimler må være forsvarligt udført. Anvend aldrig ovnen uden en mikrobølgeabsorberende anordning. Se aldrig ind i en åben bølgeleder eller antenne, mens ovnen er i brug.

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SERVICE MANUAL

GRILL AND MICROWAVE OVEN

R-733(W/B)/ 733(W/Y/LB/LG/)F

GENERAL IMPORTANT INFORMATION

This Manual has been prepared to provide Sharp Corp. Service engineers with Operation and Service Information.

It is recommended that service engineers carefully study the entire text of this manual, so they will be qualified to render satisfactory customer service.

WARNING

Note: The parts marked "*" are used in voltage more than 250V. (Parts List)

Anm: Delar märket med "*" har en spänning överstigande 250V.

Huom: Huolto-ohjeeseen merkitty "tähdella" osat joissa jännite on yli 250 V.

Bemerk: Deler som er merket "asterisk" er utsatt for spenninger over 250V til jord.

Bemærk: "Dele mærket med stjerne benyttes med højere spænding end 250 volt.

WARNING

Never operate the oven until the following points are ensured. (A) The door is tightly closed. (B) The door brackets and hinges are not defective. (C) The door packing is not damaged. (D) The door is not deformed or warped. (E) There is not any other visible damage with the oven.

Servicing and repair work must be carried out only by trained service engineers.

All the parts marked ”*” on parts list are used at voltages more than 250V.

Removal of the outer wrap gives access to potentials above 250V.

All the parts marked "∆ " on the parts list may cause undue microwave exposure, by themselves, or when they are damaged, loosened or removed.

Never operate the Grill with the oven outer cabinet removed. (Because air flow is eliminated, and the excess heat generated on adjacent components). It can cause permanent damage or a fire.

SHARP CORPORATION OSAKA, JAPAN

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SERVICING

WARNING TO SERVICE PERSONNEL

GB Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts will

result in electrocution. High voltage capacitor, Power transformer, Magnetron, High voltage rectifier assembly, High voltage harness.

REMEMBER TO CHECK 3D

1) Disconnect the supply.

2) Door opened, and wedged open.

3) Discharge high voltage capacitor.

WARNING :-BEWARE OF THE HIGH-VOLTAGE CAPACITOR CHARGE

The high-voltage capacitor remains charged for about 60 seconds after the oven has been switched off. Wait for 60 seconds and then short-circuit the connection of the high-voltage capacitor (that is, the connecting lead of the high-voltage rectifier) against the chassis,using a screwdriver with an insulated handle.

Sharp recommend that wherever possible fault-finding is carried out with the supply disconnected. It may in, some cases, be necessary to connect the supply after the outer case has been removed, in this event carry out and then disconnect the leads to the primary of the power transformer,before connecting the supply. Ensure that these leads remain isolated from other components and the oven chassis. (Use insulation tape if necessary.) When the testing is completed carry out 3D checks and reconnect the leads to the primary of the power transformer.

Magnetronovens bevatten circuits die een zeer hoge spanning en stroom kunnen voortbrengen. Contact met de volgende onderdelen kan elektrocutie tot gevolg hebben. Hoogspanningscondensator, hoogspanningstransformator, magnetron, hoogspanningsgelijkrichter, hoogspannings kabelboom.

3D checks

VERGEET DE VOLGENDE 3 STAPPEN NIET

1) Haal de stekker uit het stopcontact.

2) Open de deur en zorg ervoor dat hij niet dicht kan vallen.

3) Ontlaad de hoogspanningscondensator.

PAS OP VOOR DE ELECTRISCHE LADING VAN DE HOOGSPANNINGSCONDENSATOR

De hoogspanningscondensator blijft nog ongeveer 60 seconden lang opgeladen, nadat de oven is uitgeschakeld. Wacht 60 seconden voordat u de verbinding van de hoogspannings-condensator (m.a.w. de verbindingsdraad van de hoogspanningsgelijkrichter) met een geïsoleerde schroevedraaier kortsluit tegen het chassis.

Sharp beveelt ten sterkste aan dat, voor zover mogelijk, defecten worden opgespoord wanneer de stekker uit het stopcontact is gehaald. Soms is het nodig om de stroomtoevoer weer tot stand te brengen nadat de buitenmantel verwijderd is. Herhaal dan de bovengenoemde 3 stappen en haal de electrische draden uit deprimaire zijde vande vermogenstransformator. Zorg ervoor dat deze draden geïsoleerd blijven van andere elementen en van het chassis van de oven. (Gebruik zo nodig isolatieband.) Wanneer de test is uitgevoerd, herhaalt u de

REMEMBER TO CHECK 4R

1) Reconnect all leads removed from components during testing.

2) Replace the outer case (cabinet).

3) Reconnect the supply.

4) Run the oven. Check all functions.

Microwave ovens should not be run empty. To test for the presence of microwave energy within a cavity, place a cup of cold water on the oven turntable, close the door and set the power to HIGH and set the microwave timer for two (2) minutes. When the two minutes has elapsed (timer at zero) carefully check that the water is now hot. If the water remains cold carry out the component being tested.

When all service work is completed, and the oven is fully assembled, the microwave power output should be checked and a microwave leakage test carried out.

bovenstaande 3 stappen en verbindt u de electrische draden weer aan de primaire zijde van de vermogenstransformator.

3D checks and re-examine the connections to

VERGEET DE VOLGENDE 4 STAPPEN NIET

1) Sluit de draden weer aan diezijn losgehaald voor de test.

2) Plaats de buitenmantel weer om het toestel heen (kabinet).

3) Stop de stekker weer in het stopcontact.

4) Zet de oven aan. Controleer alle functies.

Magnetronovens mogen niet leeg aangezet worden. Om te controleren of er microgolf-energie binnen de oven wordt geproduceerd, plaatst u een mok met koud water op de draaitafel van de oven, sluit de deur, zet de oven op HIGH en stelt de klok van de magnetron in op twee (2) minuten. Wanneer de twee minuten voorbij zijn (klok staat op nul), controleert u voorzichtig of het water heet is. Indien het water nog steeds koud is, herhaalt u de allereerste drie stappen en controleer nogmaals de aansluitingen naar de geteste onderdelen.

Wanneer alle reparaties zijn uitgevoerd en de oven weer in elkaar is gezet, moet de het magnetronvermogen worden gecontroleerd en moet worden gecontroleerd of er geen microgolflekkage is.

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SERVICING

Los hornos de microondas contienen circuitos eléctricos capaces de producir voltajes de alta tensión y descargas

eléctricas. Para evitar el riesgo de electrocución, absténgase de tocar los siguientes componentes: condensador de alta tensión, transformador de alta tensión, magnetrón, dispositivo del rectificador de alta tensión y arnés de alta tensión.

RECUERDE LA COMPROBACION 3D

1) Desconecte la alimentación.

2) Deje la puerta abierta y calzada.

3) Descargue el condensador de alto voltaje.

ADVERTENCIA SOBRE LA CARGA DEL CONDENSADOR DE ALTO VOLTAJE

El condensador de alto voltaje permanece cargado unos 60 segundos después de haber apagado el horno. Espere 60 segundos y luego ponga en cortocircuito la conexión del condensador de alto voltaje (esto es, del conductor de conexión del rectificador de alto voltaje) al chasis con un destornillador de mango aislado.

Se recomienda encarecidamente que siempre que sea posible la localización de fallos se realice con la alimentación desconectada. Puede ser que en algunos casos sea necesario conectar la alimentación después de haber retirado la carcasa exterior. En este caso, realice las comprobaciones 3D y luego desconecte los conductores del primario del transformador de alimentación. Asegúrese de que estos conductores permanezcan aislados de otros componentes y del chasis del horno. (Use cinta aislante si es necesario). Cuando termine la prueba efectúe las comprobaciones 3D y reconecte los conductores al primario del transformador de alimentación.

RECUERDE LA COMPROBACION 4C

1) Conecte todos los componentes desconectados de los componentes durante la prueba.

2) Coloque la carcasa exterior (cabina).

3) Conecte la alimentación.

4) Compruebe todas sus funciones despues de poner en marcha el horno.

Los hornos de microondas no deben funcionar vacíos. Para comprobar la presencia de energía de microondas dentro de una cavidad, coloque una taza de agua fría en el plato giratorio del horno, cierre la puerta y ponga la potencia en HIGH (alta) y coloque el temporizador en dos (2) minutos. Cuando transcurran los dos minutos (temporizador a cero) compruebe cuidadosamente que el agua se ha calentado. Si el agua permaneciese fría, efectúe las comprobaciones 3D y vuelva a examinar las conexiones de los componentes que han sido probados.

Cuando haya terminado la intervención en el equipo y el horno haya sido ensamblado de nuevo completamente, deberá comprobar la potencia de salida de microondas y realizar una prueba de fugas de microondas.

VARNING FÖR LADDNINGEN I HÖGSPÄNNINGSKONDENSATORN

Högspänningskondensatorn är laddad i 60 sekunder efter det att ugnen stängts av. Vänta 60 sekunder och korislut sedan kondensatoms anslutning (dvs anslutningen till högspänningslikriktaren) till chassiet med hjälp av en isolerad skruvmejsel.

Mikrovågsugnar innehåller kretsar som producerar mycket höga spänningar och strömmar. Kontakt med följande komponenter kan leda till dödsfall: Högspänningskondensator, transformator, magnetron, högspännings likriktare, högspännings kablage.

KOM IHÅG ATT KONTROLLERA 4 STEG

1) Anslut alla ledningar som använts vid testning

2) Sätt tillbaka ytterhöljet.

3) Anslut strömkällan på nytt.

4) Sätt på ugnen. Kontrollera alla funktioner.

Mikrovågsugnar får inte användas tomma. Kontrollera mikrovågsstrålningen i olika delar av ugnen genom att placera en kopp med kallt vatten på ugnens tallrik, stäng dörren, ställ in HIGH och ställ in 2 minuter på timern. När två minuter har gått (timem visar 0) kontrollerar du om vattnet är varmt. Om vattnet fortfarande är kallt utför Du 3 steg kontroller och kontrollerar anslutningarna till varje enskild komponent på nytt.

När all service är klar och ugnen ihopskruvad skall ugnens uteffekt och eventuellt mikrovågsläckage kontrolleras.

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SERVICING

I forni a microonde contengono un circuito elettrico in grado di generare tensioni e correnti estremamente elevate. L’eventuale contatto con i seguenti componenti può causare la folgorazione:

condensatore ad alta tensione; trasformatore ad alta tensione; magnetron; rettificatore alta tensione; cablaggio ad alta tensione.

TRE OPERAZIONI IMPORTANTI PER INCOMINCIARE

1) Scollegare l'alimentazione elettrica.

2) Verificare che la porta sia bloccata in posizione aperta.

3) Scaricare il condensatore ad alta tensione.

ATTENZIONE AL CONDENSATORE AD ALTA TENSIONE: PUO ESSERE CARICO

Il condensatore ad alta tensione rimane carico per circa 60 secondi dopo lo spegnimento del forno. Occorre quindi spettare 60 secondi prima di cortocircuitare, utilizzando un cacciavite con impugnatura isolata, il collegamento del condensatore ad alta tensione (cioè del conduttore di collegamento del raddrizzatore ad alta tensione) sul telaio del forno.

Sharp raccomanda, nei limiti del possibile, che la ricerca dei guasti avvenga in assenza di alimentazione elettrica. In alcuni casi tuttavia, può essere necessario alimentare l'apparecchio dopo aver rimosso la scatola esterna. In questo caso eseguire i tre controlli sopra citati e quindi scollegare i connettori dal primario del trasformatore. Assicurarsi che tali connettori non vengano a contatto con altri componenti, ne con il telaio del forno (fare uso, se necessario, di nastro isolante). Al termine dell'intervento, eseguire nuovamente i tre controlli e ricollegare i conduttori al primario del trasformatore.

QUATTRO VERIFICHE IMPORTANTI DA NON DIMENTICARE

1) Ricollegare tutti i conduttori staccati dai vari componenti durante l'intervento.

2) Rimontare la scatola esterna.

3) Ripristinare l'alimentazione elettrica.

4) Rimettere in funzione il forno. Controllare tutte le funzioni.

I forni a microonde non devono mai funzionare a vuoto. Per verificare la presenza di energia da microonde all'interno di una cavitá, mettere una tazza di acqua fredda sul piatto rotante del forno, chiudere la porta, regolare la potenza su HIGH ed impostate il temporizzatore su due (2) minuti. Trascorsi i due minuti (temporizzatore a zero), controllare accuratamente che ora l'acqua sia calda. Se l'acqua è rimasta fredda, eseguire i tre controlli iniziali e verificare nuovamente i collegamenti del componente in questione.

Dopo aver portato a termine le operazioni di manutenzione e rimontato il forno, è necessario controllare la potenza delle microonde emesse ed eseguire un test per verificare che non vi sia alcuna dispersione.

When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks. Many of the possible causes of trouble will require that a specific test be performed. These tests are given a procedure letter which will be found in the "Test Procedure" section.

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IMPORTANT: If the oven becomes inoperative because of

a blown fuse F8A in the monitored latch switch - monitor switch circuit, check the monitored latch switch and monitor switch before replacing the fuse F8A.

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PRODUCT SPECIFICATIONS

SPECIFICATION

ITEM DESCRIPTION

Power Requirements 230 Volts

50 Hertz Single phase, 3 wire grounded

Power Consumption Microwave cooking 1.52 kW Approx. 7.1 A

Grill cooking 1.25 kW Approx. 5.3 A Dual cooking 2.7 kW Approx. 12.4 A

Power Output 900W watts nominal of RF microwave energy

(measured by way of IEC 705) Operating frequency of 2450 MHz Grill Heating Element Power Output 1200W (600W x 2) Case Dimensions Width 520mm

Height 305mm including foot

Depth 413mm Cooking Cavity Dimensions Width 342mm

Height 207mm

Depth 368mm Turntable diameter 325mm Control Complement Jog Touch Control

Clock(1:00-12:59 or 0:00-23:59)

Timer (90 minutes)

Microwave Power for Variable Cooking

Repetition Rate;

HIGH .................. Full power throughout the cooking time

MEDIUM HIGH ...................... approx. 70% of Full Power

MEDIUM ................................ approx. 50% of Full Power

MEDIUM LOW ....................... approx. 30% of Full Power

LOW ...................................... approx. 10% of Full Power

FUNCTION KEYS:

AUTO COOK key

MODE key

STOP key,

ROTARY knob

MINUTE PLUS/START key Set Weight Approx. 18.7 kg

GENERAL INFORMATION

WARNING THIS APPLIANCE MUST BE EARTHED

IMPORTANT

THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:

GREEN-AND-YELLOW : EARTH BLUE : NEUTRAL BROWN : LIVE

As part of our policy of continuous improvement, we reserve the right to alter design and specifications without notice

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APPEARANCE VIEW

OVEN

1. Door

2. Door hinges

3. Grill Guide

4. Lamp filter

5. Waveguide cover

6. Contol panel

7. Coupling

8. Door open button

9. Door latches

10. Oven cavity

11. Safety door latches

12. Ventilation openings

13. Outer case

14. Rear back plate

15. Power supply cord

1. Place the roller stay on the coupling.

2. Then place the turntable on it.

AUTO-TOUCH CONTROL PANEL

COOK & DEFROST

Low rack

High rack

1. Display Window

2. Key Button

3. Start Button

4. Rotary Knob

5. Door Open Button

R-733F

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OPERATING SEQUENCE

OFF CONDITION

Closing the door activates all door interlock switches (monitored latch switch and stop switch).

IMPORTANT When the oven door is closed, the monitor switch contacts COM - NC must be open. When the microwave oven is plugged in a wall outlet (230V 50Hz), the line voltage is supplied to the point A1+A3 in the control unit.

Figure O-1 on page 28

1. The display flashes "88:88”.

2. To set any programmes or set the clock, you must first touch the STOP pad.

3. “:” appears in the display.

NOTE: When the oven door is opened, the oven lamp

comes on at this time.

MICROWAVE COOKING CONDITION

HIGH COOKING

Enter a desired cooking time with the ROTARY knob and start the oven by touching START button.

Function sequence Figure O-2 on page 28

CONNECTED COMPONENTS RELAY Oven lamp, Fan motor, Turntable motor RY1 Grill heater RY2 Power transformer RY3

1. The line voltage is supplied to the primary winding of the power transformer. The voltage is converted to about 3.3 volts A.C. output on the filament winding and high voltage of approximately 2000 volts A.C. on the secondary winding.

2. The filament winding voltage (3.3 volts) heats the magnetron filament and the high voltage (2000 volts) is sent to the voltage doubling circuit, where it is doubled to negative voltage of approximately 4000 volts D.C.

3. The 2450 MHz microwave energy produced in the magnetron generates a wave length of 12.24 cm. This energy is channelled through the waveguide (transport channel) into the oven cavity, where the food is placed to be cooked.

4. When the cooking time is up, a single tone is heard and the relays position. The circuits to the oven lamp, power transformer, fan motor and turntable motor are cut off.

5. When the door is opened during a cook cycle, the switches come to the following condition.

RY1 + RY3 go back to their home

CONDITION

SWITCH CONTACT COOKING (NO COOKING) Monitored latch switch COM-NO Closed Open Monitor switch COM-NC Open Closed

COM-NO Closed Open

Stop switch COM-NO Closed Open

DURING DOOR OPEN

The circuits to the power transformer, fan motor and turntable motor are cut off when the primary latch switch and stop switch are made open. The oven lamp remains on even if the oven door is opened after the cooking cycle has been interrupted, because the relay

RY1 stays closed. Shown in the

display is the remaining time.

6. MONITOR SWITCH CIRCUIT The monitor switch

SW2 is mechanically controlled by oven door, and monitors the operation of the monitored latch switch

SW1

6-1 When the oven door is open during or after the

cycle of cooking program, the monitored latch and stop switches first. After that the contacts (

SW1 + SW3 must open their contacts

COM - NC) of the

monitor switch SW2 can be closed.

6-2 When the oven door is closed, the contacts

(

COM - NC) of the monitor switch SW2 must be opened. After that contacts of the monitored latch and stop switches

SW1 + SW3 are closed.

6-3 When the oven door is opened and the contacts of

the monitored latch switch

SW1 remain closed, the fuse F8A will blow, because the monitor switch is closed and a short circuit is caused.

MEDIUM HIGH, MEDIUM, MEDIUM LOW, LOW COOKING

When the microwave oven is preset for variable cooking power, the line voltage is supplied to the power transformer intermittently within a 48-second time base through the relay contact which is coupled with the current-limiting relay microwave power are given.

SETTING

HIGH

MEDIUM HIGH

MEDIUM

MEDIUM LOW

LOW

RY3. The following levels of

48 sec. ON

36 sec. ON

26 sec. ON

16 sec. ON

8 sec. ON

12 sec. OFF

22 sec. OFF

32 sec. OFF

40 sec. OFF

Approx100% = 900Watts

Approx. 70% = 630Watts

Approx. 50% = 450Watts

Approx. 30% = 270Watts

Approx. 10% = 90Watts

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NOTE: The ON/OFF time ratio does not exactly

correspond to the percentage of microwave power, because approx. 3 seconds are needed for heating up the magnetron filament.

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OPERATING SEQUENCE

GRILL COOKING CONDITION

In this condition the food is cooked by grill heater energy. Program desired cooking time and grill mode using MODE button and ROTARY knob. When the START button is touched, the following operations occur:

Figure O-3 on page 29

1. The relay

RY1 and RY2 are energized.

2. The numbers of the digital readout start the count down to zero.

3. Then the grill heating elements, turntable motor, oven lamp and fan motor are energized.

4. Now , the food is grilled by the grill heater.

5. Upon completion of the selected cooking time, audible signal sounds, and contacts of relays are opened, then the activated components as item 4 are de-energized.

DUAL COOKING CONDITION

In this condition the food is cooked by both microwave energy and grill heating elements energy simultaneously.

Figure O-4 on page 29

1. The contact of monitored latch switch

2. The relay

RY1, RY2 and RY3 are energized.

SW1 are closed.

3. The numbers of the digital readout start the count down to zero.

4. Then following components are energized.

Power transformer Grill heating elements Magnetron Turntable motor H.V. capacitor Fan motor H.V. rectifier Oven lamp

5. Now, the food is cooked by microwave and grill heating elements energy simultaneously.

6. Upon completion of selected cooking time, audible signal sounds, and contacts of relays are opened, then the activated components as item 4 are de- energized.

7. When cooking in dual mode the microwave power is limited to 70% (via the I.C.).

AUTO COOK PROGRAMME

Keep on touching the AUTO COOK pad until the desired cooking programme appears in the display. Then using the ROTARY knob, enter the weight and touch the START button. The cooking modes and cooking time are automatically computed and selected based on the programmes.

FUNCTION OF IMPORTANT COMPONENTS

DOOR OPEN MECHANISM

The door can be opened by pushing the door open button on the control panel. When the door open button is pushed, the open lever is moved upward, operating the latch head. The latch head is moved upward, and released from the latch hook. Now, the door can be opened.

DOOR

LATCH HOOK

LATCH HEADS

DOOR OPEN BUTTON

MONITOR SWITCH (SW2)

MONITORED LATCH SWITCH (SW1)

STOP SWITCH (SW3)

OPEN LEVER

MONITORED LATCH SWITCH SW1 STOP SWITCH SW3

1. When the oven door is closed, the contacts (

2. When the oven door is opened, the contacts (

MONITOR SWITCH SW2

1. When the oven door is closed, the contacts (

2. When the oven door is opened, the contacts (

3. If the oven door is opened and the contacts (

CAUTION: BEFORE REPLACING A BLOWN FUSE F1 F8

COM - NO)

must be closed.

COM - NO)

must be opened.

COM - NC) must be opened and the contacts (COM - NO) must be closed.

COM - NC)

must be closed and the contacts (

COM - NO) must be

closed.

COM - NO) of the monitored latch switch SW1 fail to open, the fuse F1 F8A blows simultaneously with closing the contacts (

COM

- NC) of the monitor switch SW2.

TEST THE MONITORED LATCH SWITCH SW1 AND MONITOR SWITCH SW2 FOR PROPER OPERATION. (REFER TO CHAPTER ”TEST PROCEDURE”.)

Figure D-1. Door Open Mechanism

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FUNCTION OF IMPORTANT COMPONENTS

FUSE F1 F8A 250V

This fuse blows when monitored latch switch

SW1 remains closed with the oven door open and when the contacts (

COM + NC) of monitor switch SW2 closes.

1. If the wire harness or electrical components are short circuited, this fuse blows to prevent an electric shock or

fire hazard.

2. The fuse blows when the asymmetric rectifier, H.V.

rectifier, H.V. wire harness, H.V. capacitor, magnetron or secondary winding of power transformer is shorted.

SPECIAL FUSE

F2 15A

If the wire harness or electrical components are shortcircuited, this fuse blows to prevent an electric shock or fire hazard.

THERMAL CUT-OUT 125

°C TC1 (MG)

The thermal cut-out protects the magnetron against overheating. If this temperature goes up higher than 125°C because the fan motor is interrupted, or the ventilation openings are blocked, the thermal cut-out and line voltages to the power transformer and the operation of the magnetron defective thermal cut-out

TC1 must be replaced with a new

MG will be stopped. The

TC1 will open

T1 will be cut off

one.

NOISE FILTER

The noise filter prevents any radio frequency interference that might flow back in the power circuit.

GRILL HEATING ELEMENT (GH)

The grill heating element

GH is located on the top of the oven cavity assembly. The grill heating element emits heat to grill foods.

ASYMMETRIC RECTIFIER

The asymmetric rectifier is a solid state device that prevents current flow in both directions. And it prevents the temperature rise of the power transformer by blowing the fuse

when the high voltage rectifier is shorted.

D2 D1

ASYMMETRIC RECTIFIER

HIGH VOLTAGE RECTIFIER

The rated peak reverse voltage of D1 of the asymmetric rectifier is 6 KV. The rated peak reverse voltage of D2 of the asymmetric rectifier is 1.7 KV. D1 and D2 of the asymmetric rectifier or high voltage rectifier are shorted when each peak reverse voltage goes beyond the rated peak reverse voltage.

THERMAL CUT-OUT 160

°C TC2 (OVEN)

The thermal cut-out located on the top the oven cavity is designed to prevent damage to the oven if the foods in the oven catch fire due to over heating produced by improper setting of cook time or failure of control unit. Under normal operation, the oven thermal cut-out remains closed. However, when abnormally high temperatures are reached within the oven cavity, the oven thermal cut-out will open at 160°C, causing the oven to shut down. The defective thermal cut-out

TC2 must be replaced with new one.

TURNTABLE MOTOR

The turntable motor drives the turntable roller assembly to rotate the turntable.

FAN MOTOR

The fan motor drives a blade which draws in external cool air. This cool air is directed through the air vanes surrounding the magnetron and cools the magnetron. This air is then channeled through the oven cavity to remove steam and vapours given off from heating the food. It is then exhausted through the exhaust air vents at the rear of the oven cavity.

The process of blowing the fuse

F1 will blow during a

fault condition.

1. The high voltage rectifier is shorted circuited during

microwave cooking.

2. The peak reverse voltage of D2 of the rectifier goes

beyond the rated peak reverse voltage of 1.7 KV in the voltage doubler circuit.

3. D2 of the rectifier then breaks down and short-circuits.

4. A large electric current then flows through the high

voltage winding of the power transformer.

5. A large electric current >10A flows through the primary

winding of the power transformer.

6. The fuse

F1 blows due to its 8A current rating.

7. The power supply to the power transformer is cut off.

R-733 -

Page 12

TEST PROCEDURES

CONDITION

OFF CONDITION

COOKING CONDITION (COMMON)

MICROWAVE COOKING CONDITION

GRILL COOKING CONDITION

DUAL COOKING CONDITION

TEST PROCEDURE

POSSIBLE CAUSE

AND

DEFECTIVE PARTS

PROBLEM

Fuse F2 15A blows when power cord is plugged into wall outlet.

Fuse F8A blows when the door is opened.

Oven lamp does not light when door is opened. (Display appears.)

Home fuse blows when power cord is plugged into wall outlet.

“88:88” does not appear in display when power cord is plugged into wall outlet.

Display does not operate properly when STOP pad is touched.

Oven does not start when START pad is touched. (Display appears.)

Oven lamp does not light. (Turntable motor operates.)

Fan motor does not operate. (Oven lamp light.)

Turntable motor assembly does not operate. (Oven lamp light.)

Oven or electrical parts do not stop when cooking time is 0 or STOP pad is touched.

Oven goes into cook cycle but shuts down before end of cooking cycle.

Oven stops as soon as the START pad is touched. (Except for Grill Cooking)

Oven seems to be operating but little or no heat is produced in oven load. (Microwave power level is set at ”HIGH”)

Oven does not operate properly during the variable cooking condition except ”HIGH” cooking condition. (Oven operates properly at HIGH)

Oven goes into cook cycle but shuts down before end of cooking cycle.

Grill Heating element does not operate.

Oven seems to be operating but little or no heat is produced in oven load. (Microwave power does not seem to be generated properly)

Grill Heating element does not operate.

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R-733 -

Page 13

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

A MAGNETRON TEST

NEVER TOUCH ANY PART IN THE CIRCUIT WITH YOUR HAND OR AN INSULATED TOOL WHILE THE OVEN IS IN OPERATION.

CARRY OUT

Isolate the magnetron from high voltage circuit by removing all leads connected to filament terminal.

To test for an open circuit filament use an ohmmeter to make a continuity test between the magnetron filament terminals, the meter should show a reading of less than 1 ohm.

To test for short filament to anode condition, connect ohmmeter between one of the filament terminals and the case of the magnetron (ground). This test should be indicated an infinite resistance. If a low or zero resistance reading is obtained then the magnetron should be considered faulty and replaced.

MICROWAVE OUTPUT POWER (IEC-705-1988)

The following test procedure should be carried out with the microwave oven in a fully assembled condition (outer case fitted). Microwave output power from the magnetron can be measured by way of IEC 60705, i.e. the temperature of a water load is measured to see how much energy is absorbed in a given time. To measure the microwave output power in the microwave oven, the relation between the calorie and watt is used. When P(W) heating works for t(second), approximately P x t/4.187 calorie is generated. On the other hand, if the temperature of the water with V(ml) rises ∆T (°C) during this microwave heating period, the calorie of the water is V x ∆T.

The formula is as follows;

Our condition for water load is as follows:

3D CHECK

P x t / 4.187 = V x ∆ T P (W) = 4.187 x V x ∆T / t

Room temperature..............around 20°C Power supply Voltage.........Rated voltage

Water load.........1000 g Initial temperature...........10 ± 2°C Heating time ...47+3=50 sec.

P = 90 x ∆T

Measuring condition:

1. Container The water container must be a cylindrical borosilicate glass vessel having a maximum material thickness of 3 mm and an outside diameter of approximately 190 mm.

2. Temperature of the oven and vessel The oven and the empty vessel are at ambient temperature prior to the start of the test.

3. Temperature of the water The initial temperature of the water is (10 ± 2)°C.

4. Select the initial and final water temperature so that the maximum difference between the final water temperature and the ambient temperature is 5K.

5. Select stirring devices and measuring instruments in order to minimize addition or removal of heat.

6. The graduation of the thermometer must be scaled by 0.1°C at minimum and an accurate thermometer.

7. The water load must be (1000 ± 5) g.

8. “t” is measured while the microwave generator is operating at full power. Magnetron filament heat- up time is not included.

NOTE: The operation time of the microwave oven is “t + 3” sec. 3 seconds is the magnetron filament heat-

up time.

Measuring method:

1. Measure the initial temperature of the water before the water is added to the vessel. (Example: The initial temperature T1 = 11°C)

2. Add the 1 litre water to the vessel.

3. Place the load on the centre of the shelf.

4. Operate the microwave oven at HIGH for the temperature of the water rises by a value ∆ T of (10 ± 2) K.

5. Stir the water to equalize temperature throughout the vessel.

R-733 -

Page 14

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

6. Measure the final water temperature. (Example: The final temperature T2 = 21°C)

7. Calculate the microwave power output P in watts from above formula.

Initial temperature ......................................................................................................... T1 = 11°C

Temperature after (47 + 3) = 50 sec. ............................................................................ T2 = 21°C

Temperature difference Cold-Warm............................................................................ ∆T1 = 10°C

Measured output power

The equation is “P = 90 x ∆T” .................................................P = 90 x 10°C = 900 Watts Approx.

JUDGMENT: The measured output power should be within at least

power.

CAUTION: 1°C CORRESPONDS TO 90 WATTS. REPEAT MEASUREMENT IF THE POWER IS

INSUFFICIENT.

1000g

T1˚C

B POWER TRANSFORMER TEST

WARNING: High voltages and large currents are present at the secondary winding and

filament winding of the power transformer. It is very dangerous to work near this part when the oven is on. NEVER make any voltage measurements of the high-voltage circuits, including the magnetron filament.

CARRY OUT 3D CHECKS

± 15 % of the rated output

1000g

T2˚C

Heat up for 50 sec.

Disconnect the leads to the primary winding of the power transformer. Disconnect the filament and secondary winding connections from the rest of the HV circuitry. Using an ohmmeter, set on a low range, it is possible to check the continuity of all three windings. The following readings should be obtained:-

a. Primary winding ............1.9 ohms approximately

b. Secondary winding .......13 ohms approximately

c. Filament winding ...........less than 1 ohm

If the reading obtained are not stated above, then the power transformer is probably faulty and should be replaced.

CARRY OUT

4R CHECKS

C HIGH VOLTAGE RECTIFIER ASSEMBLY TEST

HIGH VOLTAGE RECTIFIER TEST

CARRY OUT

3D CHECKS.

Isolate the high voltage rectifier assembly from the HV circuit. The high voltage rectifier can be tested using an ohmmeter set to its highest range. Connect the ohmmeter across the terminal B + C of the high voltage rectifier and note the reading obtained. Reverse the meter leads and note this second reading. The normal resistance is infinite in one direction and more than 100 kΩ in the other direction.

R-733 -

Page 15

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

CARRY OUT 4R CHECKS

ASYMMETRIC RECTIFIER TEST

CARRY OUT

3D CHECKS.

Isolate the high voltage rectifier assembly from the HV circuit. The asymmetric rectifier can be tested using an ohmmeter set to its highest range. Connect the ohmmeter across the terminals A + B of the asymmetric rectifier and note the reading obtained. Reverse the meter leads and note this second reading. If an open circuit is indicated in both directions then the asymmetric rectifier is good. If an asymmetric rectifier is shorted in either direction, then the asymmetric rectifier is faulty and must be replaced along with the high voltage rectifier. When the asymmetric rectifier is defective, check whether the magnetron, high voltage rectifier, high voltage wire or filament winding of the power transformer is is also damaged.

CARRY OUT

4R CHECKS

NOTE: FOR MEASURING THE RESISTANCE OF THE RECTIFIER, THE BATTERIES OF THE

MEASURING INSTRUMENT MUST HAVE A VOLTAGE OF AT LEAST 6 VOLTS, BECAUSE OTHERWISE AN INFINITE RESISTANCE MIGHT BE SHOWN IN BOTH DIRECTIONS.

D HIGH VOLTAGE CAPACITOR TEST

CARRY OUT 3D CHECKS

A. Isolate the high voltage capacitor from the circuit. B. Continuity check must be carried out with measuring instrument which is set to the highest resistance

range.

C. A normal capacitor shows continuity for a very short time (kick) and then a resistance of about 10 MΩ

after it has been charged. D. A short-circuited capacitor shows continuity all the time. E. An open capacitor constantly shows a resistance about 10 MΩ because of its internal 10 MΩ

resistance. F. When the internal wire is opened in the high voltage capacitor, the capacitor shows an infinite

resistance. G. The resistance across all the terminals and the chassis must be infinite when the capacitor is normal. If incorrect readings are obtained, the high voltage capacitor must be replaced.

D2 D1

ASYMMETRIC RECTIFIER

HIGH VOLTAGE RECTIFIER

CARRY OUT

E SWITCH TEST

CARRY OUT

Isolate the switch to be tested and using an ohmmeter check between the terminals as described in the following table.

Plunger Operation COM to NO COM to NC

Released Open circuit Short circuit

Depressed Short circuit Open Circuit

If incorrect readings are obtained, make the necessary switch adjustment or replace the switch.

CARRY OUT

4R CHECKS

3D CHECKS

Table: Terminal Connection of Switch

4R CHECKS.

R-733 -

COM; Common terminal NO; Normally open terminal NC; Normally close terminal

Page 16

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

F THERMAL CUT OUT TEST

CARRY OUT

3D CHECKS

Disconnect the leads from the terminals of the thermal cut-out. Then using an ohmmeter, make a continuity test across the two terminals as described in the below.

CARRY OUT

Condition 125°C (MAG) 160°C (OVEN)

Temperature of ”ON” condition This is not resetable type This is not resettable type (closed circuit)

Temperature of ”OFF” condition Above 125°C Above 160°C (open circuit)

Indication of ohmmeter (When room Closed circuit Closed circuit temperature is approx. 20°C.)

4R CHECKS

PARTS NAME THERMAL CUT-OUT THERMAL CUT-OUT

If incorrect readings are obtained replace the thermal cut-out.

An open circuit thermal cut-out (MG) indicates that magnetron has overheated, this may be due to restricted ventilation, cooling fan failure or a fault condition within the magnetron or HV circuit.

An open circuit thermal cut-out (OVEN) indicates that the foods in the oven may catch fire, this may be due to over heating produced by improper setting of the cooking timer or failure of the control panel.

An open circuit thermal cut-out (GRILL) indicates that the oven cavity has overheated, this may be due to no load operation.

G BLOWN FUSE 15A F2

Table: Thermal Cut-out Test

CARRY OUT

3D CHECKS

If the fuse 15A is blown, there could be shorts or grounds in electrical parts or wire harness. Check them and replace the defective parts or repair the wire harness.

CARRY OUT

4R CHECKS

CAUTION: Only replace fuse 15A with the correct value replacement

BLOWN FUSE F8A F1

CARRY OUT

If the fuse

3D CHECKS

F1 F8A is blown when the door is opened, check the monitored latch switch and monitor switch. If the fuse

F1 F8A is blown by incorrect door switching replace the defective switch(s) and the fuse F1

F8A

BLOWN FUSE F1 F8A

If the fuse

F1 is blown, there could be a short in the asymmetric rectifier or there is a ground in wire harness. A short in the asymmetric rectifier may have occured due to short or ground in H.V. rectifier, magnetron, power transformer or H.V. wire. Check them and replace the defective parts or repair the wire harness.

CARRY OUT

4R CHECKS

CAUTION: Only replace fuse with the correct value replacement.

R-733 -

Page 17

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

I NOISE FILTER TEST

CARRY OUT

3D CHECKS

Disconnect the leads from the terminals of the noise filter. Using an ohmmeter, check between the terminals as described in the following table.

MEASURING POINTS INDICATION OF OHMMETER

Between N and L Approx. 680K ohm Between terminal N and WHITE Short circuit Between terminal L and RED Short circuit

If incorrect readings are obtained, replace the noise filter unit.

CARRY OUT

4R CHECKS

K MOTOR WINDING TEST

CARRY OUT

3D CHECKS

Disconnect the leads from the motor. Using an ohmmeter, check the resistance between the two terminals as described in the table below.

Fan motor Approximately 300Ω Turntable motor Approximately 14.5kΩ

F8A

L(min) Cx ± 20% Cv ± 20%

1.0mH 0.22µF 0.0047µF

Table: Resistance of Motor

Motors Resistance

WHT

R1: 10M ohm ± 20% R2: 680K ohm ± 20%

RED

If incorrect readings are obtained, replace the motor.

CARRY OUT

4R CHECKS

L GRILL HEATING ELEMENT TEST

CARRY OUT

3D CHECKS

Before carrying out the following tests make sure the heating element is cool completely.

Resistance of heating element

Disconnect the wire leads to the heating element to be tested. Using ohmmeter with low resistance range. Check the resistance across the terminals of the heating element as described in the following table.

Table: Resistance of heating element

Parts name Resistance

Grill heating element Approximately 22.5Ω x 2 = 45Ω

2. Insulation resistance Disconnect the wire leads to the heating element to be tested, Check the insulation resistance between the element terminal and cavity using a 500V - 100MΩ insulation tester. The insulation resistance should be more than 10MΩ in the cold start.

If the results of above test 1 and/or 2 are out of above specifications, the heating element is probably faulty and sholud be replaced.

CARRY OUT

4R CHECKS

R-733 -

Page 18

TEST PROCEDURES

PROCEDURE

LETTER

M TOUCH CONTROL PANEL ASSEMBLY TEST

The touch control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore, unlike conventional microwave ovens, proper maintenance can not be performed with only a voltmeter and ohmmeter. In this service manual, the touch control panel assembly is in one unit and troubleshooting by unit replacement is described according to the symptoms indicated. Control Panel.

The following symptoms indicate a defective control unit.

1. Tact Switch. The following symptoms indicate a defective tact switch. Replace the tact switch.

a) When touching a tact switch, a certain tact switch produces no signal at all. b) When touching a tact switch, sometimes a tact switch produces no signal.

2. In connection with tact switches.

a) When touching a tact switch, a certain group of tact switch do not produce a signal. b) When touching a tact switch, no tact switch produce a signal.

3. Display problems.

a) At a certain digit, all or some segments do not light up. b) At a certain digit, brightness is low. c) Only one indicator does not light up. d) The corresponding segments of all digits do not light up; or they continue to light up. e) Wrong figure appears. f) A certain group of indicators do not light up. g) The figure of all digits flicker. h) When touching a tact switch, the control unit does not respond.

4. Other possible problems caused by defective control unit.

a) Buzzer does not sound or continues to sound. b) Cooking is not possible.

COMPONENT TEST

N TACT SWITCH TEST

1. Disconnect the oven from the power supply.

2. Discharge the high voltage capacitor.

3. Remove the control unit from the control panel.

4. By using an ohmmeter, check the tact switch operation.

5. When the tact switch is not depressed, an ohmmeter should indicate an open circuit. When the tact

switch is depressed, an ohmmeter should indicate a short circuit. If improper operation is indicated, the tact switch is probably defective and should be checked.

O RELAY TEST

Remove the outer case and check voltage between Pin No. 1 and Pin No. 3 of the 3 pin connector (A) on the control unit with an A.C. voltmeter. The meter should indicate rated voltage, if not check oven circuit.

RY1, RY2 and RY3 Relay Test These relays are operated by D.C. voltage Check voltage at the relay coil with a D.C. voltmeter during the microwave cooking operation.

DC. voltage indicated............. Defective relay.

DC. voltage not indicated....... Check diode which is connected to the relay coil. If diode is good,

RELAY SYMBOL OPERATIONAL VOLTAGE CONNECTED COMPONENTS

RY1 Approx. 24.0V D.C. Oven lamp / Turntable motor / Cooling fan motor RY2 Approx. 18.0V D.C. Heating element RY3 Approx. 18.0V D.C. High voltage transformer

control unit is defective.

R-733 -

Page 19

TEST PROCEDURES

PROCEDURE

LETTER

P PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD

(PWB) IS OPEN

To protect the electronic circuits, this model is provided with a fine foil pattern added to the primary on the PWB, this foil pattern acts as a fuse. If the foil pattern is open, follow the troubleshooting guide given below for repair. Problem: POWER ON, indicator does not light up. CARRY OUT

3D CHECKS.

STEPS OCCURRENCE CAUSE OR CORRECTION

1 The rated AC voltage is not present at Check supply voltage and oven power cord.

POWER terminal of CPU connector (CN-A).

2 The rated AC voltage is present at primary Low voltage transformer or secondary circuit defective.

side of low voltage transformer. Check and repair.

3 Only pattern at "a" is broken. *Insert jumper wire J1 and solder.

4 Pattern at "a" and "b" are broken. *Insert the coil RCILF2003YAZZ between "c" and "d".

COMPONENT TEST

(CARRY OUT 3D CHECKS BEFORE REPAIR)

NOTE: *At the time of these repairs, make a

visual inspection of the varistor for burning damage and examine the transformer with tester for the presence of layer shortcircuit (check primary coil resistance). If any abnormal condition is detected, replace the defective parts.

CARRY OUT 4R CHECKS.

D20

D21

RY1

RY2 OL / FM

/ TTM

CN - A

(J1)

VRS1

R-733 -

Page 20

TOUCH CONTROL PANEL ASSEMBLY

OUTLINE OF TOUCH CONTROL PANEL

The touch control section consists of the following units as shown in the touch control panel circuit.

The principal functions of these units and the signals communicated among them are explained below.

Tact Switch

Signals R60, R61, R62 and R63 generated in the LSI are sent to the tact switches. When a tact switch is touched, a signal is completed through the tact switch and passed back to the LSI through R53 to perform the function that was requested.

Control Unit

Control unit consists of LSI, power source circuit, relay circuit, back light circuit, synchronizing signal circuit, ACL circuit, buzzer circuit and indicator circuit.

1) LSI

This LSI controls the tact switch strobe signal, relay driving signal for oven function and indicator signal.

2) Power Source Circuit

This circuit generates voltage necessary in the control unite.

5) Buzzer Circuit

The buzzer is responsive to signals from the LSI to emit audible sounds (key touch sound and completion sound).

6) Door Sensing Switch

A switch to "tell" the LSI if the door is open or closed.

7) Relay Circuit

To drive the magnetron, fan motor, turntable motor, grill heating element and light the oven lamp.

8) Indicator Circuit

This circuit consists of 4-digits, 12-segments and 3common electrodes using a Liquid Crystal Display.

9) Encoder

The encoder converts the signal generated by LSI into the pulse signal, and the pulse signal is returned to the LSI.

10) Back Light Circuit

A circuit to drive the back light (Light emitting diodes LED1-LED4)

Symbol Voltage Application

VC +5V LSI(IC1)

3) Synchronizing Signal Circuit

The power source synchronizing signal is available in order to compose a basic standard time in the clock circuit. It accompanies a very small error because it works on commercial frequency.

4) ACL Circuit

A circuit to generate a signals which resets the LSI to the initial state when power is supplied.

R-733 -

Page 21

DESCRIPTION OF LSI

0.1 sec.

2 sec.

H : +5V

L: 0V

H : +5V

L: 0V

LSI(IZA855DR)

The I/O signal of the LSI(IZA855DR) are detailed in the following table.

Pin No. Signal I/O Description

1-3 SEG21- OUT Terminal not used.

SEG23

4 COM1 OUT

5 COM2 OUT

6 COM3 OUT

7 COM4 OUT Terminal not used. 8 VLC IN

9 VSS IN

10 XIN IN

11 XOUT OUT

12-15 K00-K03 IN

16 TEST IN Connected to VC. 17 RESET IN

18 HOLD IN/OUT Connected to VDD. 19 INT2 IN Signal synchronized with commercial power source frequency.

Common data signal: COM1.

Connected to LCD (Pin No. 1)

Common data signal: COM2.

Connected to LCD (Pin No. 2)

Common data signal: COM1.

Connected to LCD (Pin No. 3)

Signal synchronized with commercial power source frequency. Signal similar to VSS.

Power source voltage: 0V.

VSS voltage of power source circuit input.

Internal clock oscillation frequency setting input.

The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect to XOUT terminal.

Internal clock oscillation frequency control output.

Output to control oscillation input of XIN.

Terminal to change functions according to the Model.

DC voltage in accordance with the Model in operation is applied to set up its function.

Auto clear terminal.

Signal is input to reset the LSI to the initial state when power is supplied. Temporarily set to "L" level the moment power is supplied, at this time the LSI is reset. Thereafter set at "H" level.

This is the basic timing for time processing of LSI.

20.0 msec

H : +5V

L : 0V

20 R81 IN Signal coming from encoder.

When the encoder is turned, the contacts of encoder make pulse signals. And pulse signals are input into R81.

21 INT1 IN

Signal coming from encoder.

Signal similar to R81. Pulse signals are input into INT1. 22 R83 OUT Terminal not used. 23 R90 IN

To input signal which communicates the door open/close information to LSI.

Door open "L" level signal (0V). Door close "H" level (+5V) 24-25 R91-R92 OUT Terminal not used.

26 VDD IN Connected to GND. 27 R40 OUT

Signal to sound buzzer (2.0 kHz).

A: key touch sound.

B: Completion sound.

R-733 -

Page 22

DESCRIPTION OF LSI

Pin No. Signal I/O Description

28 R41 OUT Grill heating element driving signsl.

To turn on and off the grill heating element relay (RY2). "L" level during grill cooking or dual cooking; "H" level otherwise.

29 R42 OUT

Magnetron high-voltage circuit driving signal.

To turn on and off the cook relay (RY3). In 100% POWER operation, the signals hold "L" level during microwave cooking and "H" level while not cooking. In other cooking modes (70%, 50%, 30%, 10%) the signal turns to "H" level and "L" level in repetition according to the power level.

ON/OFF time ratio in Micro cooking (a. 32second time base)

MICRO ON OFF COOK 100% 32sec. 0sec. 70% 24sec. 8sec. 50% 18sec. 14sec. 30% 12sec. 20sec. 10% 6sec. 26sec.

During

cooking

(Grill or dual)

ON/OFF time ratio in Micro cooking (a. 48second time base)

MICRO ON OFF COOK 100% 48sec. 0sec. 70% 36sec. 12sec. 50% 26sec. 22sec. 30% 16sec. 32sec. 10% 8sec. 40sec.

OFF

GND

30 R43 OUT Oven lamp, fan motor and turntable motor driving signal.

To turn on and off shut off relay (RY1). The

20.0 msec

square waveform voltage is delivered to the RY1 driving circuit.

During cooking

31-33 R50-R52 OUT Terminal not used. 34 R53 IN

Signal coming from tact switch.

When either of tact switches SW60-SW63 is touched, a corresponding signal out of R60, R61, R62 and R63 will be input into R53. When no key is touched, the signal is held at "H" level.

35 R60 OUT

Tact switch strobe signal.

Signal applied to tact switch section. A pulse signal is input to R53 terminal while the tact switch SW60 is touched.

36 R61 OUT

Tact switch strobe signal.

Signal applied to tact switch section. A pulse signal is input to R53 terminal while the tact switch SW61 is touched.

37 R62 OUT

Tact switch strobe signal.

Signal applied to tact switch section. A pulse signal is input to R53 terminal while the tact switch SW62 is touched.

38 R63 OUT

Tact switch strobe signal.

Signal applied to tact switch section. A pulse signal is input to R53 terminal while the tact switch SW63 is touched.

39-42 R70-R73 OUT Terminal not used. 43-54 SEG0 - OUT

Segment data signal.

SEG11 Connected to LCD.

The relation between signals are as follows:

LSI signal (Pin No.) LCD (Pin No.) LSI signal (Pin No.) LCD (Pin No.)

SEG 0 (1) ............................. S12(4) SEG 6 (7) .......................... S6(10)

SEG 1 (2) ............................. S11(5) SEG 7 (8) .......................... S5(11)

SEG 2 (3) ............................. S10(6) SEG 8 (9) .......................... S4(12)

SEG 3 (4) ............................... S9(7) SEG 9 (10) ........................ S3(13)

SEG 4 (5) ............................... S8(8) SEG 10 (11) ...................... S2(14)

SEG 5 (6) ............................... S7(9) SEG 11 (12) ...................... S1(15)

H : +5V

L : 0V

55-57 SEG12- OUT Terminal not used.

SEG14

58 VDD IN

Power source voltage input terminal.

Connected to GND.

59-64 SEG15- OUT Terminal not used.

SEG20

R-733 -

Page 23

TOUCH CONTROL

1. Precautions for Handling Electronic Components

This unit uses CMOS LSI in the integral part of the circuits. When handling these parts, the following precautions should be strictly followed. CMOS LSI have extremely high impedance at its input and output terminals. For this reason, it is easily influenced by the surrounding high voltage power source, static electricity charge in clothes, etc., and sometimes it is not fully protected by the built-in protection circuit. In order to protect CMOS LSI.

1) When storing and transporting, thoroughly wrap them in aluminium foil. Also wrap PW boards containing them in aluminium foil.

2) When soldering, ground the technician as shown in the figure and use grounded soldering iron and work table.

approx. 1M ohm

2. Shapes of Electronic Components

Transistor 2SB1238

Transistor DTA123ES KRA223M KRC243M

3. Servicing of Touch Control Panel

We describe the procedures to permit servicing of the touch control panel of the microwave oven and the precautions you must take when doing so. To perform the servicing, power to the touch control panel is available either from the power line of the oven itself or from an external power source.

(1) Servicing the touch control panel with power

supply of the oven : CAUTION:

THE HIGH VOLTAGE TRANSFORMER OF THE MICROWAVE OVEN IS STILL LIVE DURING SERVICING AND PRESENTS A HAZARD .

Therefore, when checking the performance of the touch control panel, put the outer cabinet on the oven to avoid touching the high voltage transformer, or unplug the primary terminal (connector) of the high voltage transformer to turn it off; the end of such connector must be insulated with an insulating tape. After servicing, be sure to replace the leads to their original locations.

A. On some models, the power supply cord between

the touch control panel and the oven itself is so short that the two can't be separated.

For those models, check and repair all the controls (sensor-related ones included) of the touch control

panel while keeping it connected to the oven.

B. On some models, the power supply cord between

the touch control panel and the oven proper is so long enough that they may be separated from each other. For those models, therefore, it is possible to check and repair the controls of the touch control panel while keeping it apart from the oven proper; in this case you must short both ends of the door sensing switch (on PWB) of the touch control panel with a jumper, which brings about an operational state that is equivalent to the oven door being closed. As for the sensor-related controls of the touch control panel, checking them is possible if the dummy resistor(s) with resistance equal to that of the controls are used.

(2) Servicing the touch control panel with power

supply from an external power source:

Disconnect the touch control panel completely from the oven proper, and short both ends of the door sensing switch (on PWB) of the touch control panel, which brings about an operational state that is equivalent to the oven door being closed. Connect an external power source to the power input terminal of the touch control panel, then it is possible to check and repair the controls of the touch control panel; it is also possible to check the sensor-related controls of the touch control panel by using the dummy resistor(s).

4. Servicing Tools

Tools required to service the touch control panel assembly.

1) Soldering iron: 30W (It is recommended to use a soldering iron with a grounding terminal.)

2) Oscilloscope: Single beam, frequency range: DC 10MHz type or more advanced model.

3) Others: Hand tools

5. Other Precautions

1) Before turning on the power source of the control unit, remove the aluminium foil applied for preventing static electricity.

2) Connect the connector of the key unit to the control unit being sure that the lead wires are not twisted.

3) After aluminium foil is removed, be careful that abnormal voltage due to static electricity etc. is not applied to the input or output terminals.

4) Attach connectors, electrolytic capacitors, etc. to PWB, making sure that all connections are tight.

5) Be sure to use specified components where high precision is required.

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Page 24

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

WARNING: Avoid possible exposure to microwave energy. Please follow the instructions below before

operating the oven.

1. CARRY OUT

2. Make sure that a definite "click" can be heard when the microwave oven door is unlatched. (Hold the door in a closed position with one hand, then push the door open button with the other, this causes the latch heads to rise, it is then possible to hear a "click" as the door switches operate.)

3. Visually check the door and cavity face plate for damage (dents, cracks, signs of arcing etc.)

Carry out any remedial work that is necessary before operating the oven. Do not operate the oven if any of the following conditions exist:

Please refer to ‘OVEN PARTS, CABINET PARTS, DOOR PARTS’, when carrying out any of the following removal procedures:

3D CHECKS.

1. Door does not close firmly.

2. Door hinge, support or latch hook is damaged.

3. The door gasket or seal is damaged.

4. The door is bent or warped.

5. There are defective parts in the door interlock system.

6. There are defective parts in the microwave generating and transmission assembly.

7. There is visible damage to the oven.

Do not operate the oven:

1. Without the RF gasket (Magnetron).

2. If the wave guide or oven cavity are not intact.

3. If the door is not closed.

4. If the outer case (cabinet) is not fitted.

OUTER CASE REMOVAL

To remove the outer case, proceed as follows.

1. Disconnect oven from power supply.

2. Open the oven door and wedge it open.

3. Remove the screws from rear and along the side edge of case.

4. Slide the entire case back about 3cm to free it from retaining clips on the cavity face plate.

5. Lift the entire case from the oven.

6. Discharge the H.V. capacitor before carrying out any further work.

7. Do not operate the oven with the outer case removed.

N.B.; Step 1, 2 and 6 form the basis of the

CAUTION: DISCHARGE HIGH VOLTAGE CAPACITOR

BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING.

3D checks.

HIGH VOLTAGE COMPONENTS REMOVAL (HIGH VOLTAGE CAPACITOR AND HIGH VOLTAGE RECTIFIER ASSEMBLY)

To remove the components, proceed as follows.

1. CARRY OUT

2. Disconnect all the leads and terminals of high voltage rectifier assembly from high voltage capacitor.

3. Remove one (1) screw holding earth side terminal of high voltage rectifier assembly, and remove capacitor holder.

4. Remove one (1) screw holding capacitor holder to the oven cavity.

5. Release the capacitor holder from the duct.

3D CHECKS

6. Remove the capacitor from the capacitor holder.

7. Now high voltage rectifier assembly and capacitor should be free.

CAUTION: WHEN REPLACING HIGH VOLTAGE

RECTIFIER ASSEMBLY, ENSURE THAT THE CATHODE (EARTH) CONNECTION IS SECURELY FIXED TO THE CAPACITOR HOLDER WITH AN EARTHING SCREW.

POWER TRANSFORMER REMOVAL

1. CARRY OUT 3D CHECKS

2. Disconnect the filament leads of the power transformer from high voltage capacitor and the magnetron.

3. Disconnect the H.V. wire A from the power transformer.

4. Disconnect the main wire harness from the power transformer.

5. Remove the two (2) screws and one (1) washer holding the transformer to base plate.

6. Remove the transformer.

7. Now, the power transformer is free.

MAGNETRON REMOVAL

1. CARRY OUT 3D CHECKS.

2. Remove the air separate duct from the chassis support and the air intake duct.

3. Disconnect the H.V. wire B and filament lead of the transformer from the magnetron.

4. Remove the one (1) screw holding the chassis support to the magnetron.

5. Move the air intake duct to left.

6. Remove the air deflector from the magnetron.

7. Carefully remove four (4) screws holding magnetron to waveguide, when removing the screws hold the magnetron to prevent it from falling.

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8. Remove the magnetron from the waveguide with care so that the magnetron antenna is not hit by any metal object around the antenna.

CAUTION: WHEN REPLACING THE MAGNETRON,

BE SURE THE R.F. GASKET IS IN PLACE AND THE MAGNETRON MOUNTING SCREWS ARE TIGHTENED SECURELY.

Page 25

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

FAN MOTOR REMOVAL

1. CARRY OUT 3D CHECKS

2. Remove the one (1) screw holding the noise filter to the chassis support.

3. Release the noise filter from the tabs of the fan duct.

4. Disconnect the wire leads from the fan motor.

5. Remove the one (1) screw holding the capacitor holder to the oven cavity back plate.

6. Remove the one (1) screw holding the fan duct to the oven cavity back plate.

CONTROL PANEL REMOVAL

1. CARRY OUT

2. Disconnect the main harness and stop switch harness from the control panel.

3D CHECKS

TURNTABLE MOTOR REMOVAL

1. Disconnect the oven from power supply.

2. Remove the turntable motor cover by snipping of material in four corners.

3. Where the corners have been snipped off bend corner areas flat. No sharp edge must be evident after removal of TT motor cover.

7. Release the tabs of the capacitor holder from the fan duct.

8. Remove the fan duct from the oven.

9. Remove the fan blade assembly from the fan motor.

10.Remove the two (2) screws holding the fan motor to the fan duct.

11.Now, the fan motor is free.

3. Lift up the control panel assembly and pull it forward. Now, the control panel assembly is free.

4. Disconnect the wire lead from turntable motor and remove the 2 screws holding the turntable motor.

5. Turntable motor is now free.

6. After replacement use the one (1) screw provided with the turntable motor assembly to fit the turntable motor cover.

TURNTABLE COUPLING REMOVAL

1. Remove the turntable motor, refer to “Turntable Motor Removal”.

2. Pull the coupling out of the hole in the oven cavity.

3. At that time the turntable coupling will be free.

CAUTION: REPLACE THE PACKING AT THE SAME

TIME WHEN REPLACING THE COUPLING. BECAUSE THE PACKING MAY BE DAMAGED WHEN PULLING OUT THE COUPLING.

OVEN LAMP REMOVAL

1. CARRY OUT 3D CHECKS

2. To remove the wire from the lamp holder press down the terminal tab and pull.

3. Lift up the oven lamp socket.

4. Now, the oven lamp socket is free.

GRILL HEATING ELEMENTS REMOVAL

PACKING

Figure C-1. Turntable Coupling

Lock

Socket

Figure C-2. Oven lamp

COUPLING

T.T.M SUPPORT ANGLE

Bulb

1. CARRY OUT 3D CHECKS.

2. Remove the one (1) screw holding the exhaust duct to the oven cavity.

3. Remove the exhaust duct from the oven cavity.

4. Disconnect the wire leads from the grill heating elements.

5. Lay down the two (2) tabs holding the heater reflector to the oven cavity.

6. Remove the heater reflector from the oven cavity by sliding it toward the magnetron.

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7. Make the tabs of grill heater angle straight.

8. Remove the grill heater angle, grill heating elements and the short terminal together from the heater reflector.

9. Remove the grill heater angle from the grill heating elements.

10.Remove the two (2) screws holding the short terminal to the grill heating elements.

11.Now, the grill heating elements are free.

Page 26

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

MONITOR

SWITCH(SW2)

MONITORED LATCH

SWITCH (SW1)

TAB

STOP SWITCH

(SW3)

PRIMARY LATCH SWITCH, STOP SWITCH AND MONITOR SWITCH REMOVAL

1. CARRY OUT

3D CHECKS.

2. Remove the control panel assembly referring to “CONTROL PANEL REMOVAL”.

3. Disconnect the leads from all switches.

4. Remove the two (2) screws holding the latch hook to the oven cavity.

5. Remove the latch hook.

6. Push the retaining tab slightly and remove the switch.

MONITORED LATCH SWITCH, STOP SWITCH AND MONITOR SWITCH ADJUSTMENT

If the monitored latch switch, stop switch and monitor switch do not operate properly due to a mis-adjustment, the following adjustment should be made.

1. CARRY OUT

3D CHECKS

2. Loosen the two (2) screws holding the latch hook to the oven cavity front flange.

3. With door closed, adjust the latch hook by moving it back and forward, or up and down. In and out play of the door allowed by the latch hook should be less than 0.5 mm. The horizontal position of the latch hook should be placed where the monitor switch has activated with the door closed. The vertical position of the latch hook should be placed where the monitored latch switch and stop switch have activated with the door closed.

4. Secure the screws with washers firmly.

5. Make sure of the monitored latch switch, stop switch and monitor switch operation. If those switches have not activated with the door closed, repeat steps 1-4.

After adjustment, make sure of following:

1. In and out play of door remains less than 0.5 mm when latched position. First check latch hook position, pushing and pulling the door toward the oven face. The results (play of the door) should be less than 0.5 mm.

2. The contacts (COM - NO) of monitored latch switch and stop switch interrupt the circuit before the door can be opened.

3. The contacts (COM - NC) of the monitor switch close when the door is opened.

4. Re-install outer case and check for microwave leakage around the door with an approved microwave survey meter. (Refer to Microwave Measurement Procedure.)

DOOR

LATCH HOOK

LATCH HEADS

DOOR OPEN BUTTON

MONITOR SWITCH (SW2)

MONITORED LATCH SWITCH (SW1)

STOP SWITCH (SW3)

OPEN LEVER

Figure C-4Latch Switches Adjustment

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Page 27

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

POWER SUPPLY CORD REPLACEMENT

Removal

1. CARRY OUT 3D CHECKS.

2. Remove the single (1) screw holding the green/yellow wire to the cavity.

3. Disconnect the leads of the power supply cord from the noise filter, referring to the Figure C-5 (a).

4. Release the power supply cord from the rear cabinet.

5. Now, the power supply cord is free.

Oven cavity back plate

Blue wire

Brown wire

Figure C-5 (a) Replacement of Power Supply Cord

Power supply cord

Chassis support

Re-install

1. Insert the moulding cord stopper of power supply cord into the square hole of the rear cabinet, referring to the Figure C-5 (b).

2. Install the earth wire lead of power supply cord and the earth angle to the cavity with one (1) screw and tight the screw.

3. Connect the brown and blue wire leads of power supply cord to the noise filter correctly, referring to the Pictorial Diagram.

POWER SUPPLY CORD

MOULDING CORD STOPPER

OVEN CAVITY BACK PLATE

GROMMET MOULDING

DOOR REPLACEMENT

REMOVAL

1. Disconnect the oven from the power supply.

2. Push the open button and open the door slightly.

3. Insert an putty knife (thickness of about 0.5mm) into the gap between the choke cover and door frame as shown in Figure C-7 to free engaging parts.

4. Release choke cover from door panel.

5. Now choke cover is free.

PUTTY KNIFE

CHOKE COVER

DOOR FRAME

Figure C-7. Door Disassembly

6. Lift the door upwards.

7. Now, door sub assembly is free from oven cavity.

8. Remove the four (4) screws holding the door panel to the door frame.

9. Release door panel from six (6) tabs of door frame by sliding door panel upward.

10.Now, door panel is free.

11.Slide latch head upward and remove it from door frame with releasing latch spring from door frame and latch head.

12.Now, latch head and latch spring are free.

13.Remove the two (2) screws holding the glass stopper to

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SQUARE HOLE

Figure C-5 (b) Replacement of Power Supply Cord

the door frame.

14.Remove the glass stopper from the door frame.

15.Slide the front door glass leftwards and then slide upwards to release the tabs holding it.

16.Now, the front door glass is free

RE-INSTALL

1. Re-install the front door glass to the door frame as follows.

a) Insert the upper edge of the front door glass into the six

(6) tabs of the door frame.

b) Slide the front door glass downwards and insert the

lower edge of the front door glass into the six (6) tabs of the door frame.

c) Slide the front door glass rightwards and insert the

right edge of the front door glass into the one (1) tab of the door frame.

2. Re-install the glass stopper to the door frame as follows.

a) Re-install the glass stopper to the door frame so that

the two (2) holes of the glass stopper meet the two (2) pins of the door frame.

b) Hold the glass stopper to the door frame with the two

(2) screws.

3. Re-install the latch spring to the latch head. Re-install the latch spring to the door frame. Re-install latch head to door frame.

4. Re-install door panel to door frame by fitting six (6) tabs of door frame to six (6) holes of door panel.

5. Hold the door panel to the door frame with four (4)

Page 28

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

screws.

6. Located door panel hinge pins into cavity hinge location holes.

7. Re-install choke cover to door panel by clipping into position.

Note: After any service to the door; (A) Make sure that the monitor switch, monitored latch

switch and stop switch are operating properly. (Refer to chapter "Test Procedures".).

(B) An approved microwave survey meter should be

used to assure compliance with proper microwave radiation emission limitation standards. (Refer to Microwave Measurement Procedure.)

After any service, make sure of the following :

1. Door latch heads smoothly catch latch hook through latch holes and that latch head goes through centre of latch hole.

2. Deviation of door alignment from horizontal line of cavity face plate is to be less than 1.0mm.

3. Door is positioned with its face pressed toward cavity face plate.

4. Check for microwave leakage around door with an approved microwave survey meter. (Refer to Microwave Measurement Procedure.)

Note: The door on a microwave oven is designed to act

as an electronic seal preventing the leakage of microwave energy from oven cavity during cook cycle. This function does not require that door be

air-tight, moisture (condensation)-tight or light-tight. Therefore, occasional appearance of moisture, light or sensing of gentle warm air movement around oven door is not abnormal and do not of themselves, indicate a leakage of microwave energy from oven cavity.

Upper Oven

Hinge

Upper Oven Hinge

Door Panel

Choke Cover

Lower

Oven Hinge

Figure C-6. Door Replacement

Lower Oven Hinge

TEST DATA AT A GLANCE

Parts Symbol Value / Data Fuse F1 F8A / 250V

Special fuse F2 F15A / 250V Thermal cut-out (MG) TC1 125°C Thermal cut-out (OVEN) TC2 160°C Oven lamp OL 200–250 V 25W E14 High voltage capacitor C 1.07µF AC 2100V Magnetron MG Filament < 1Ω

Power transformer T Filament winding < 1Ω

TEST POINT ON CONTROL UNIT

In/Out put terminal Test Point Volt power plug and close the door.) Input terminal (Power supply) A1-A3 230V Approx. 1043 Ω ohm. Input terminal (Stop switch) B1–B2 – 0.7 ohm. Output terminal (Oven lamp, A5–A3 230V Approx. 165Ω ohm.

Fan motor, Turntable motor) Output terminal (Power transformer) No. of RY3–A3 230V Approx. 2.6 ohm. Output terminal (Earth) B2–Chassis – 0.7 ohm.

Filament – chassis ∞ ohm.

Secondary winding Approx. 13Ω Primary winding Approx. 1.9Ω

Resistance (Disconnect the

WARNING: DISCONNECT THE PLUG WHEN MEASURING RESISTANCE.

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Page 29

MICROWAVE MEASUREMENT

After adjustment of door latch switches, monitor switch and door are completed individually or collectively, the following leakage test must be performed with a survey instrument and it must be confirmed that the result meets the requirements of the performance standard for microwave oven.

REQUIREMENT

The safety switch must prevent microwave radiation emission in excess of 5mW/cm2 at any point 5cm or more from external surface of the oven.

PREPARATION FOR TESTING:

Before beginning the actual test for leakage, proceed as follows;

1. Make sure that the test instrument is operating normally as specified in its instruction booklet. Important: Survey instruments that comply with the requirement for instrumentations as prescribed by the performance standard for microwave ovens must be used for testing.

Recommended instruments are: NARDA 8100 NARDA 8200 HOLADAY HI 1500 SIMPSON 380M

2. Place the oven tray into the oven cavity.

3. Place the load of 275 ± 15ml of water initially at 20 ± 5°C in the center of the oven tray. The water container should be a low form of 600 ml beaker with inside diameter of approx. 8.5cm and made of an electrically non-conductive material such as glass or plastic. The placing of this standard load in the oven is important not only to protect the oven, but also to insure that any leakage is measured accurately.

4. Close the door and turn the oven ON with the timer set for several minutes. If the water begins to boil before the survey is completed, replace it with 275ml of cool water.

5. Move the probe slowly (not faster that 2.5cm/sec.) along the gap.

6. The microwave radiation emission should be measured at any point of 5cm or more from the external surface of the oven.

mW cm

SHARP

Microwave leakage measurement at 5 cm distance

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Page 30

SCHEMATIC DIAGRAMS

NOTE:CONDITION OF OVEN

1. Door closed

2. Cooking mode at microwave position

3. Timer at zero

F1:

FUSE

F8A

EARTH

FUSE

15A

0.22 / 250V

10M / 0.5W

0.0047 / 250V

680K / 0.5W

NOISE SUPPRESSION COIL

0.0047 / 250V

230V~50Hz

BRN / 15

G-Y / 15

BLU / 15

NOTE: * COMPONENTS

WITH POTENTIALS

ABOVE 250V

OVEN

THERMAL

MAG

THERMAL

CUT-OUT

160ß C

125ß C

RY2

COM

RY3

OVEN LAMP

SW1:

MONITORED

LATCH

FAN MOTOR

SWITCH

SW3:

RY1

STOP

Figure O-1. Oven Schematic-OFF Condition

TURN TABLE

MOTOR

TTM

GRILL HEATER

SW2:

MONITOR

SWITCH

POWER TRANSFORMER

H.V.

CAPACITOR

1.07 F

AC2100V

ASYMMETRIC

RECTIFIER

MAGNETRON

H.V. RECTIFIER

230V~50Hz

BRN / 15

BLU / 15

G-Y / 15

F1:

FUSE

F8A

OVEN

THERMAL

CUT-OUT

MAG

THERMAL

CUT-OUT

160ß C

125ß C

EARTH

FUSE

15A

0.22 / 250V

10M / 0.5W

0.0047 / 250V

680K / 0.5W

NOISE SUPPRESSION COIL

0.0047 / 250V

COM

RY2

COM

RY3

POWER TRANSFORMER

H.V.

CAPACITOR

1.07 F

AC2100V

ASYMMETRIC

RECTIFIER

SW3:

OVEN LAMP

SW1:

MONITORED

LATCH

SWITCH

TURN TABLE

MOTOR

TTM

FAN MOTOR

GRILL HEATER

SW2:

MONITOR

SWITCH

RY1

STOP

MAGNETRON

H.V. RECTIFIER

Figure O-2. Oven Schematic-Microwave Cooking Condition

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Page 31

SCHEMATIC DIAGRAMS

NOTE:CONDITION OF OVEN

1. Door closed

2. Cooking mode at microwave position

3. Timer at zero

F1:

FUSE

F8A

EARTH

FUSE

15A

0.22 / 250V

10M / 0.5W

680K / 0.5W

NOISE SUPPRESSION COIL

230V~50Hz

BRN / 15

G-Y / 15

BLU / 15

NOTE: * COMPONENTS

WITH POTENTIALS

ABOVE 250V

0.0047 / 250V

OVEN

THERMAL

CUT-OUT

MAG

THERMAL

CUT-OUT

160ß C

125ß C

COM

RY2

COM

RY3

SW1:

MONITORED

OVEN LAMP

LATCH

SWITCH

TURN TABLE

FAN MOTOR

SW3:

RY1

STOP

Figure O-3. Oven Schematic-Grill Condition

* MAGNETRON

* POWER TRANSFORMER

MOTOR

TTM

GRILL HEATER

SW2:

MONITOR

SWITCH

CAPACITOR

1.07 F

AC2100V

* H.V.

* ASYMMETRIC

RECTIFIER

* H.V. RECTIFIER

230V~50Hz

BRN / 15

BLU / 15

G-Y / 15

FUSE

15A

EARTH

10M / 0.5W

0.22 / 250V

NOISE SUPPRESSION COIL

0.0047 / 250V

680K / 0.5W

0.0047 / 250V

F1:

FUSE

F8A

OVEN

THERMAL

MAG

THERMAL

CUT-OUT

COM

RY2

160ß C

125ß C

COM

RY3

OVEN LAMP

SW1:

MONITORED

LATCH

SWITCH

TURN TABLE

MOTOR

TTM

FAN MOTOR

GRILL HEATER

SW2:

SW3:

RY1

STOP

Figure O-4. Oven Schematic-Dual Cooking Condition

MONITOR

SWITCH

POWER TRANSFORMER

H.V.

CAPACITOR

1.07 F

AC2100V

ASYMMETRIC

RECTIFIER

MAGNETRON

H.V. RECTIFIER

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Page 32

PICTORIAL DIAGRAM

R-733 -

GRILL HEATER

CONTROL PANEL

CN-B

GRN

RED

RY*3 NO

COM

WHT

ORG

BLK

BLU WHT

RED

MON SW.

MON LATCH SW.

WHT

BRN

BLK WHT

WHT BLK

BLU GRY

ORG WHT

BRN BLK

BLU BLU

TC1: MAG C/O

OVEN LAMP

WHT

BRN BLU

GRY

RED

WHT

BRN

BLU

TC2: OVEN C/O

BRN

LIVE

BRN

NEUTRAL

BLU

EARTH

G/Y

RED

MG: MAGNETRON

POWER SUPPLY CORD

BLU

BRN

FM: FAN MOTOR

ASYMMETRIC RECTIFIER

CN-A

RY*2 NO

COM

BLK

BLU RED

BLK

BLU

STOP SW.

GRN

TTM: TURNTABLE MOTOR

RED

RED BLU

WHT

Figure S-1. Pictorial Diagram

T: HVT

WHT

BRN

HV WIRE B

HV WIRE A

HV RECT

C: HV CAPACITOR

Page 33

CONTROL PANEL CIRCUIT

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AC230V 50Hz

OVEN LAMP FAN MOTOR TURNTABLE MOTOR

HEATER

HIGH VOLTAGE TRANSFORMER

NOTE

VRS1

10G471K

A 3

(J1)

A 1

A 5

RY1

OJ-SH-124LM

RY2

RY3

Q20

B1238

R22

1/2w

D21

D22

COM

VRB18

COM

VRB18SP

: IF NOT SPECIFIED 1/4w ± 5% : IF NOT SPECIFIED 1SS270A : IF NOT SPECIFIED 0.01µF / 16v

ZD20

11ES1·4

D20

R20 1k

HZ20-1

Q23 KRC243M

Q21 KRA223M

–

C1 0.1µ/50v

C20

Q22 KRA223M

D23

C2 470µ/50v

510

SP1

Q24 KRA101M

–

10µ/50v

B 2 B 1

DOOR SWITCH

0.1µ/50v

Q1 KRA101M

R40 3.3k

Q40 KRA101M

C21

0.1µ/50v

R32 10k

D30

ZD1 HZ5C2

ZD2

–

HZ4A2

R21 4.7k

R30 15k

R31 4.7k

Q2 DTA123ES

R4 4.7k

R3 4.7k

C30

–

CF1 4MHz

R10 4.7k

(J3) (J5) (J7) (J9)

C6 10µ/50v

C7 0.1µ/50v

(J2)

(J4)

(J6)

(J8)

Q3 B1238

R5 240

WH-1

WH-2

C50

C51

SW50

LD1 LD2 LD3 LD4

SEG20 6420R81

63 SEG19

62 SEG18

61 SEG17

1SEG21 2SEG22 3SEG23 4COM1 5COM2 6COM3 7COM4 8VLC 9VSS 10XIN 11XOUT 12K00 13K01 14K02 15K03 16TEST 17RESET 18HOLD 19INT2

21INT1

22R83

23R90

R51 4.7k

R50 4.7k

60 SEG16

59 SEG15

58 VDD

24R91

25R92

26VDD

R52 100k

R53 100k

57 SEG14

56 SEG13

55 SEG12

54 SEG11

53 SEG10

52 SEG 9

51 50 SEG 7 49 SEG 6 48 SEG 5 47 SEG 4 46 SEG 3 45 SEG 2 44 SEG 1 43 SEG 0 42 R73 41 R72 40 R71 39 R70 38 R63 37 R62

IC1 IZA855DR

36 R61 35 R60 34 R53 33 R52

27R40

28R41

29R42

30R43

31R50

32R51

SEG 8

LIQUID CRYSTAL DISPLAY

S 9

S 8

S 7

S 6

S 5

S 4

S 3

S 2

S 1

S12

S11

S10

C 2

C 3

1min

STOP

SW60+SW61

C 1

SW62

AUTO COOK

R60 4.7k

SW63

Figure S-2. Control Panel Circuit

Page 34

PRINTED WIRING BOARD DIAGRAM

QKITPA018URE0

LD4

WH-1

R64

R63 R62

R61

SW63

112

CN - G

SW62

SW61

SW60

R52 R53

MICRO

R60

Q24

D22

Q23

R21

Q20

LD1 LD2 LD3

C1 S1

R68

R67 R66

R65

CR60

CN - B

C20

C21

(J10)

D23

Q22

Q40

D30

R50

R51

R20

R30

Q21SP1

ZD20

191

C30

C51

C50

R31

R40

WH-2

51 33

DIP

WH-1

WH-2

IC1

CF1

(J6)

(J4)

(J2)

ZD2

(J8)

(J3) (J5) (J7) R10

(J9)

ZD1

D2 D1 D3

RY3

(J11)

R22

GRILL

RY2

SW50

BCA

D21

RY1

OL/FM /TTM

Figure S-3. Printed Wiring Board

R-733 -

D20

(J1)

VRS1

CN - A

Page 35

PARTS LIST

Note: The parts marked “*” are used in voltage more than 250V. The parts marked "∆" may cause undue microwave exposure “§” MARK: SPARE PARTS-DELIVERY SECTION

REF. NO. PART NO.

ELECTRIC PARTS

C RC-QZA252WRE0 U High voltage capacitor 1 AP FM RMOTEA361WRE0 U Fan motor 1 AT F2 QFS-B0019MRE0 U Fuse 15A 1 AC F1 QFS-CA025WRE0 U F8A Fuse 1 AC GH FHET-A040WRK1 U Grill heating element assembly 1 BB

* MG RV-MZA264WRE0 U Magnetron 1 BK

∆

OL RLMPTA066WRE0 U Oven lamp 1 AK SW1 QSW-MA131WRE0 U Monitored latch switch 1 AK SW2 QSW-MA133WRE0 U Monitor switch 1 AN SW3 QSW-MA131WRE0 U Stop switch 1 AK

* T RTRN-A016URE1 U Power transformer 1 BH

TC1 RTHM-A098WRE0 U Thermal cut-out 125°C (Magnetron) 1 AH TC2 RTHM-A100WRE0 U Thermal cut-out 160°C (Oven) 1 AH TTM RMOTDA227WRE0 U Turntable motor assy 1 AU

* 1-1 FH-DZA035WRE0 U H.V. rectifier assembly 1 AP

1-2 FPWBFA309WRE2 U Noise filter 1 AT 1-3 QACCVA004URE1 U Power supply cord 1 AQ

CABINET PARTS

2-1 GCABUA469WRT0 U Outer case cabinet R-733(W)F R-733(W) 1 AX 2-1 GCABUA445WRP0 U Outer case cabinet R-733(B) 1 AX 2-1 GCABUA039URP0 U Outer case cabinet R-733(Y)F 1 AW 2-1 GCABUA040URP0 U Outer case cabinet R-733(LB)F 1 AW 2-1 GCABUA044URP0 U Outer case cabinet R-733(LG)F 1 AX 2-2 GLEGPA028WRE0 U Foot 4AA 2-3 GDAI-A219WRP5 U Base Plate 1 AS

DESCRIPTION

Q’TY CODE

∆

CONTROL PANEL PARTS

3- 1 DPWBFA123URK0 U Control unit 1 BN 3- 1A QCNCMA430DRE0 U 3-pin connector (CN-A) 1 AC 3- 1B QCNCMA414DRE0 U 2-pin connector (CN-B) 1 AB 3- 1C QW-QZA003URE2 U Lead wire (WH-1, WH-2) 2 AB 3- 1D RLCDSA036DRE0 U Liquid crystal display 1 AP 3- 1E LHLD-A002URF1 U LED holder 1 AC 3- 1F PSHEPA569WRE0 U LED sheet 1 AC C1 RC-KZA087DRE0 U Capacitor 0.1 uF 50V 1 AB C2 RC-EZA323DRE0 U Capacitor 470 uF 50V 1 AA C3 RC-KZA087DRE0 U Capacitor 0.1 uF 50V 1 AB C4-5 VCKYD41CY103N U Capacitor 0.01 uF 16V 2 AA C6 RC-EZA322DRE0 U Capacitor 10 uF 50V 1 AB C7 RC-KZA087DRE0 U Capacitor 0.1 uF 50V 1 AB C20 RC-EZA322DRE0 U Capacitor 10 uF 50V 1 AB C21 RC-EZA302DRE0 U Capacitor 0.1 uF 50V 1 AB C30 VCKYD41CY103N U Capacitor 0.01 uF 16V 1 AA C50-51 VCKYD41CY103N U Capacitor 0.01 uF 16V 2 AA CF1 RCRS-A012DRE0 U Ceramic resonator 1 AD D1-4 VHD11ES1///-1 U Diode (11ES1) 4 AB D20-23 VHD1SS270A/-1 U Diode (1SS270ATA) 4 AA D30 VHD1SS270A/-1 U Diode (1SS270ATA) 1 AA IC1 RH-IZA022DRZZ J LSI 1AP LD1-4 VHPSLZ781C9-3 U Light emitting diode 4 AC Q1 VSKRA101M//-3 U Transistor (KRA101M) 1 AA Q2 VSDTA123ES/-3 U Transistor (DTA123ES) 1 AB Q3 VS2SB1238//-3 U Transistor (2SB1238) 1 AD Q20 VS2SB1238//-3 U Transistor (2SB1238) 1 AD Q21-22 VSKRA223M//-3 U Transistor (KRA223M) 2 AB Q23 VSKRC243M//-3 U Transistor (KRC243M) 1 AB Q24 VSKRA101M//-3 U Transistor (KRA101M) 1 AA Q40 VSKRA101M//-3 U Transistor (KRA101M) 1 AA R1-2 VRS-B13AA511J U Resistor 510 ohm 1W 2 AB R3-4 VRD-B12EF472J U Resistor 4.7k ohm 1/4W 2 AA R5 VRD-B12EF241J U Resistor 240 ohm 1/4W 1 AA R10 VRD-B12EF472J U Resistor 4.7k ohm 1/4W 1 AA R20 VRD-B12EF102J U Resistor 1.0k ohm 1/4W 1 AA R21 VRD-B12EF472J U Resistor 4.7k ohm 1/4W 1 AA

R-733 -

Page 36

PARTS LIST

Note: The parts marked ”*” are used in voltage more than 250V. The parts marked "∆" may cause undue microwave exposure “§” MARK: SPARE PARTS-DELIVERY SECTION

REF. NO. PART NO.

CONTROL PANEL PARTS CONTIN....

R22 VRD-RM2HD910J U Resistor 91k ohm 1/4W 1 AH R30 VRD-B12EF153J U Resistor 15k ohm 1/4W 1 AA R31 VRD-B12EF472J U Resistor 4.7k ohm 1/4W 1 AA R32 VRD-B12EK103J U Resistor 10k ohm 1/4W 1 AA R40 VRD-B12EF332J U Resistor 3.3k ohm 1/4W 1 AA R50-51 VRD-B12EF472J U Resistor 4.7k ohm 1/4W 2 AA R52-53 VRD-B12EF104J U Resistor 100k ohm 1/4W 2 AA R60 VRD-B12EF472J U Resistor 4.7k ohm 1/4W 1 AA RY1 RRLY-A080DRE0 U Relay (OJ-SH-124LM) 1 AG RY2 RRLY-A093DRE0 U Relay (VRB18) 1 AM RY3 RRLY-A092DRE0 U Relay (VRB18SP) 1 AP SP1 RALM-A014DRE0 U Buzzer (PKM22EPT-THAI) 1 AG SW50 RVR-BA018WRE0 U Encoder 1AH SW60-63 QSW-PA004DRE0 U Tact switch 4 AB T1 RTRNPA112DRE0 U Transformer 1 AP VRS1 RH-VZA034DRE0 U Varistor (10G471K) 1 AD ZD1 VHEHZ5C2///-1 U Zener diode (HZ5C2) 1 AB ZD2 VHEHZ4A2///-1 U Zener diode (HZ4A2) 1 AB ZD20 VHEHZ201///-1 U Zener diode (HZ20-1) 1 AB 3- 2 GMADIA005URF0 U Display window 1 AE 3- 3 HPNLCB030URR0 U Control panel frame [R-733(B)] 1 AP 3- 3 HPNLCW048URR0 U Control panel frame [R-733(W)] 1 AP 3- 3 HPNLCY012URR0 U Control panel frame [R-733(Y)F] 1 AP 3- 3 HPNLCW047URR0 U Control panel frame [R-733(W)F] 1 AP 3- 3 HPNLCL019URR0 U Control panel frame [R-733(LB)F] 1 AP 3- 3 HPNLCG018URR0 U Control panel frame [R-733(LG)F] 1 AP 3- 4 JBTN-L017URF0 U Key button [R-733(W)] 1 AD 3- 4 JBTN-A100URF0 U Key button [R-733(B)] 1 AD 3- 4 JBTN-0011URF0 U Key button [R-733(Y/W/LB/LG)F] 1 AC 3- 5 JBTN-L013URF0 U Start button [R-733(W)] 1 AD 3- 5 JBTN-A101URF0 U Start button [R-733(B)] 1 AE 3- 5 JBTN-0013URF0 U Start button [R-733(Y/W/LB/LG)F] 1 AE 3- 6 JKNBKA018URF0 U Rotary knob [R-733(W)F] 1 AD 3- 6 JKNBKA040URF0 U Rotary knob [R-733(B)] 1 AD 3- 6 JKNBKY007URF0 U Rotary knob [R-733(Y)F] 1 AD 3- 6 JKNBKL006URF0 U Rotary knob [R-733(LB)F] 1 AD 3- 6 JKNBKG005URF0 U Rotary knob [R-733(LG)F] 1 AD 3- 7 JBTN-A019URF0 U Open button [R-733(B)] 1 AE 3- 7 JBTN-A017URF0 U Open button [R-733(W)F] 1 AE 3- 7 JBTN-Y003URF0 U Open button [R-733(Y)F] 1 AE 3- 7 JBTN-L018URF0 U Open button [R-733(LB)F] 1 AE 3- 7 JBTN-G005URF0 U Open button [R-733(LG)F] 1 AE 3- 8 LSTPPA005URF0 U Stopper 1AC 3- 9 MSPRCA045WRE0 U Open button spring 1 AA 3- 10 PSHEPA003URE0 U Display window film 1 AD 3- 11 XEPSD30P10XS0 U Screw; 3mm x 10mm 5 AA

DESCRIPTION Q’TY CODE

HOW TO ORDER REPLACEMENT PARTS

To have your order filled promptly and correctly, please furnish the following information.

1. MODEL NUMBER 2. REF. NO.

3. PART NO. 4. DESCRIPTION

R-733 -

Page 37

PARTS LIST

Note: The parts marked ”*” are used in voltage more than 250V. The parts marked "∆" may cause undue microwave exposure “§” MARK: SPARE PARTS-DELIVERY SECTION

REF. NO.

OVEN PARTS

4-1 DOVN-A007URKO U Oven cavity 1 BP 4-2 LBNDKA107WRP1 U Capacitor holder 1 AD 4-3 PHOK-A078WRF5 U Latch hook 1 AH 4-4 NFANJA001URE0 U Fan blade 1 AF 4-5 PDUC-A637WRF2 U Fan duct 1 AL 4-6 LANGFA155WRP7 U Chassis support 1 AF 4-7 PPACGA108WRE0 U Packing 1AC 4-8 PCUSUA365WRP1 U Baseplate cushion 1 AA 4-9 MLEVPA001URF3 U Open lever 1 AE 4-10 NCPL-A042WRF1 U Coupling 1 AD 4-11 PCOVPA308WRE1 U Waveguide cover 1 AE 4-12 PFILWA042WRP0 U Lamp filter 1 AB 4-13 PDUC-A606WRF1 U Air intake duct 1 AK 4-15 PDUC-A514WRP0 U Air duct 1 AH 4-16 QTANNA006WRE0 U Earth plate 1 AB 4-17 PDUC-A612WRP0 U Exhaust duct 1 AQ 4-18 GCABDA063WRP0 U Back plate 1 AQ 4-20 PSPAGA001WRE0 U Vibration proof cushion 1 AA

DOOR PARTS

∆

5-1 DDORFA752WRK0 U Door panel assembly 1 AY

∆

5-2 GCOVHA352WRF2 U Choke cover 1 AH 5-3 GWAKPB011URR0 U Door frame (B) 1 AT

∆ ∆

5-3 GWAKPW021URR0 U Door frame (W) 1 AT

∆

5-3 GWAKPY005URR0 U Door frame (Y)F 1 AT

∆

5-3 GWAKPL004URR0 U Door frame (LB)F 1 AT

∆

5-3 GWAKPG010URR0 U Door frame (LG)F 1 AT 5-4 PGLSPA020URR0 U Door glass 1 AX

∆

5-5 LSTPPA147WRF1 U Latch head 1 AE 5-6 MSPRTA141WRE0 U Latch spring 1 AA 5-7 PSHEPA424WRE2 U Door film 1 AG 5-8 FDORFA287WRT0 U Door panel sub assembly 1 AW 5-9 XCPSD30P06000 U Screw 3mm x 6mm 6 AA 5-10 LSTPPA003URF0 U Glass stopper 1 AB

PART NO. §

DESCRIPTION

Q’TY CODE

∆ ∆

∆

∆ ∆

∆

MISCELLANEOUS

6-1 FROLPA002URK0 U Roller stay assembly 1 AM 6-2 NTNT-A051WRE0 U Turntable 1 AN 6-3 TINS-A127URR0 U Instruction book 1 AM

* 6-5 QW-QZA210WRE1 U H.V. wire B 1 AD

6-6 FW-VZA056URE0 U Main wire harness 1 AW 6-7 TCAUHA006URR0 U Combined caution label 1 AE 6-9 FAMI-A072WRK2 U High rack 1 AY 6-10 FAMI-A073WRK3 U Low rack 1 AX 6-11 FW-VZA031URE0 U Stop switch harness 1 AE 6-12 TLABMA044URR1 U Menu label (W) 1 AE 6-12 TLABMA077URR0 U Menu label (B) 1 AE 6-13 LHLDKA008WRF0 U P. clip 1AA

SCREW, NUT AND WASHER

7-1 XHPSD40P08K00 J Screw 4mm x 8mm 2 AA

7-2 XHTSD40P08RV0 J Screw 4mm x 8mm 3 AA 7-3 XEPSD40P25000 J Screw 4mm x 25mm 2 AA 7-4 XBPWW30P05K00 J Screw 3mm x 5mm 2 AA 7-5 LX-LZA011WRE0 U S S Rivet 2 AB 7-6 XWWSD50-06000 J Washer 4mm x 0.6mm 1 AA 7-7 XOTSD40P12RV0 J Screw 4mm x 12mm 22 AA 7-8 XCPSD30P06000 J Screw 3mm x 6mm 1 AA 7-9 XOTSF40P12000 J Screw 4mm x 12mm (B) 4 AA 7-9 XOTSE40P12000 J Screw 4mm x 12mm (W) 4 AA 7-10 XFPSD50P10KS0 J Screw 4mm x 10mm 2 AB 7-11 LX-EZA045WRE0 J TTM cover screw 1 AA

R-733 -

Page 38

EXPLODED VIEW OF OVEN

CABINET AND UNIT CHASSIS PARTS

6-7

2-1

7-9

7-4

4-16

4-17

7-7

4-18

7-7

4-15

7-7

TC3

4-8

4-11

4-7

2-3

4-12

4-1

TTM

7-1

7-5

4-10

TC2

7-8

4-3

7-7

6-13

7-2

4-4

4-13

7-9

1-3

7-7

SW2

7-7

7-2

7-7

7-10

TC1

7-9

7-7

1-3

4-9

7-6

SW1

7-1

SW3

4-5

1-2

7-7

4-6

1-5

7-3

4-2

1-1

7-2

7-7

2-2

NOTE: In the event of removing the turntable motor cover this part should be refitted using screw connection: LX-EZA045WRE0(7-11)

7-7

R-733 -

7-7

4-20

7-7

6-2

6-1

Page 39

CONTROL PANEL / DOOR PARTS

5-4

5-3

5-2

5-7

5-5

5-6

5-1

5-9

5-8

5-10

5-9 x 2

CONTROL PANEL PARTS

3-10

3 - 7

3 - 3

3 - 2

3-1D

3 - 5

3-1F

3-1E

3 - 1

3-11

3 - 4

3 - 8

3 - 6

DOOR PARTS

3 - 9

R-733 -

Page 40

MISCELLANEOUS / PACKING AND ACCESSORIES

6-9

6-11

6-5

6-10

6-6

Actual wire harness may be different than illustration.

PACKING PAD KIT

TRAY HOLDER

(SPADFA298WRE0)

TURNTABLE TRAY

HIGH RACK

LOW RACK

COOK BOOK & INSTRUCTION BOOK

(CPADBA146WRK0)

POLYETHENE BAG

(SSAKHA041WRE0)

DOOR PROTECTION SHEET

(SPADPA020WRE0)

TURNTABLE SUPPORT

TRAY PAD

Not Replaceable Items.

R-733 -

PACKING CASE

(SPAKCA369URR0) R-733 (W)

(SPAKCA370URR0) R-733 (B)

(SPAKCA390URR0) R-733 (Y)F

(SPAKCA368URR0) R-733 (W)F

(SPAKCA388URR0) R-733 (LB)F

(SPAKCA389URR0) R-733 (LG)F

SHARP CORP 2000 Printed in the U.K.