Page 3 - TABLE OF CONTENTS
SOI 03.06 FV 3/38 599 36 78-45 TABLE OF CONTENTS CAUTION, MICROWAVE RADIATION / GENERAL IMPORTANT INFORMATION .......................4 SERVICING / GENERAL INFORMATION .......................................................................................5 PRODUCT SPECIFICATIONS ........................
Page 4 - CAUTION; GENERAL IMPORTANT INFORMATIONS
SOI 03.06 FV 4/38 599 36 78-45 CAUTION CAUTION MICROWAVE RADIATION Personnel should not be exposed to the microwave 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...
Page 5 - SERVICING; WARNING TO SERVICE PERSONNEL; GENERAL INFORMATION; WARNING; IMPORTANT; EARTH
SOI 03.06 FV 5/38 599 36 78-45 SERVICING WARNING TO SERVICE PERSONNEL Microwave ovens contain circuitry capable of producing very high voltage and current. Contact with the following parts will result in electrocution High voltage capacitor, High Voltage transformer, Magnetron, High voltage rectifie...
Page 6 - PRODUCT SPECIFICATIONS; SPECIFICATION; EU
SOI 03.06 FV 6/38 599 36 78-45 PRODUCT SPECIFICATIONS SPECIFICATION ITEM DESCRIPTION Power Requirements 230 Volts(EU)/230-240 Volts(UK) 50 Hertz Single phase, 3 wire earthed EU UK Power Consumption Microwave cooking Grill cooking Dual cooking 1.42kW Approx. 6.3A 1.0kW Approx. 4.2A 2.4kW Approx. 10.2...
Page 7 - APPEARANCE VIEW; OVEN; Turntable
SOI 03.06 FV 7/38 599 36 78-45 APPEARANCE VIEW OVEN 1 Front trim 2 Oven lamp 3 Control panel 4 Door open button 5 Waveguide cover 6 Oven cavity 7 Seal packing 8 Door seals and sealing surfaces. 9 Fixing points (4 points) 10 Ventilation openings 11 Outer cover 12 Rear cabinet 13 Power supply cord sup...
Page 8 - CONTROL PANEL
SOI 03.06 FV 8/38 599 36 78-45 APPEARANCE VIEW CONTROL PANEL MCD2660E / MCD2661E / MOA4226 1 Digital Display 2 Indicators The appropriate indicator will flash or light up, just above each symbol according to the instruction. When an indicator is flashing, press the appropriate button (having the sam...
Page 13 - OPERATION SEQUENCE; OFF CONDITION; CONNECTED COMPONENTS RELAY; Oven lamp, Turntable motor
SOI 03.06 FV 13/38 599 36 78-45 OPERATION SEQUENCE OFF CONDITION Closing the door activates the door interlock switch (monitored latch 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 (EU) / ...
Page 14 - GRILL COOKING CONDITION; the following operations occur:
SOI 03.06 FV 14/38 599 36 78-45 OPERATION SEQUENCE HIGH, 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 32-second time base through the vary contact. The followin...
Page 15 - FUNCTION OF IMPORTANT COMPONENTS; DOOR OPEN MECHANISM; The door can be opened by pushing the door open button.; FUSE F2; secondary; TURNTABLE MOTOR
SOI 03.06 FV 15/38 599 36 78-45 FUNCTION OF IMPORTANT COMPONENTS DOOR OPEN MECHANISM The door can be opened by pushing the door open button. MONITORED LATCH SWITCH (SW1) 1. When the oven door is closed, the contacts (COM - NO) must be closed. 2. When the oven door is opened, the contacts (COM - NO) ...
Page 16 - FAN MOTOR
SOI 03.06 FV 16/38 599 36 78-45 FUNCTION OF IMPORTANT COMPONENTS FAN MOTOR The fan motor drives a blade which draws external cool air. This cool air is directed through the air vanes surrounding the magnetron and cools the magnetron. This air flows through the oven cavity to remove steam and vapours...
Page 17 - TROUBLESHOOTING CHART; switch and monitor switch before replacing the F8A fuse.
SOI 03.06 FV 17/38 599 36 78-45 TROUBLESHOOTING CHART 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 w...
Page 18 - TEST PROCEDURES; PROCEDURE
SOI 03.06 FV 18/38 599 36 78-45 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 3D CHECK Isolate the magnetron from high voltage circuit by removing all leads connected ...
Page 19 - needed for magnetron filament heat-up time.; the rated output power.; MEASUREMENT IF THE POWER IS INSUFFICIENT.; POWER TRANSFORMER TEST; secondary winding and filament winding of the power
SOI 03.06 FV 19/38 599 36 78-45 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST NOTE: The operation time of the microwave oven is “t + 3” sec. 3 seconds are needed for magnetron filament heat-up time. Measuring method: 1. Measure the initial temperature of the water before the water is added to the ...
Page 21 - CARRY OUT 3D CHECKS.; THERMAL CUT OUT TEST; CARRY OUT 3D CHECKS; CAUTION: Only replace fuse 20A with the correct value replacement.
SOI 03.06 FV 21/38 599 36 78-45 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST E SWITCH TEST CARRY OUT 3D CHECKS. Isolate the switch to be tested and using an ohmmeter check between the terminals as described in the following table. Table: Terminal Connection of Switch Plunger Operation COM to NO C...
Page 25 - CARRY OUT 3D CHECKS BEFORE REPAIR
SOI 03.06 FV 25/38 599 36 78-45 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST N GRILL HEATING ELEMENT TEST CARRY OUT 3D CHECKS Before carrying out the following tests make sure the heating element is cooled completely. 1. Resistance of heating element. Disconnect the wire leads to the heating elem...
Page 26 - CONTROL PANEL ASSEMBLY; ) Power Source Circuit
SOI 03.06 FV 26/38 599 36 78-45 CONTROL PANEL ASSEMBLY OUTLINE OF CONTROL PANEL The touch control section consists of the following units as shown in the touch control panel circuit. (1) Switch Unit (2) Control Unit (3) LED Unit (4) Relay Unit The principal functions of these units and the signals c...
Page 27 - Servicing of Touch Control Panel; ) Run the oven and check all functions.
SOI 03.06 FV 27/38 599 36 78-45 SERVICING 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 t...
Page 28 - COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE; before operating the oven.; BUILT IN FRAME ASSEMBLY REMOVAL; Un-clip the built in frame assembly at the; OUTER CASE REMOVAL
SOI 03.06 FV 28/38 599 36 78-45 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE WARNING: Avoid possible exposure to microwave energy. Please follow the instructions below before operating the oven. 1. CARRY OUT 3D CHECKS. 2. Make sure that a definite "click" can be heard when the microwave ov...
Page 30 - FAN MOTOR REPLACEMENT; the; Avoid; INSTALLATION
SOI 03.06 FV 30/38 599 36 78-45 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE FAN MOTOR REPLACEMENT REMOVAL CAUTION: 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. Remove the one (1) ...
Page 31 - OVEN LAMP REMOVAL; POWER SUPPLY CORD REPLACEMENT; Removal; GRILL HEATING ELEMENT REMOVAL; Oven lamp
SOI 03.06 FV 31/38 599 36 78-45 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE OVEN LAMP REMOVAL 1. CARRY OUT 3D CHECKS. 2. Disconnect the wire lead from the oven lamp 3. Lift up the oven lamp from the clips of the air intake duct. 4. Now, the oven lamp is free. POWER SUPPLY CORD REPLACEMENT Removal...
Page 32 - MONITORED LATCH SWITCH, MONITOR SWITCH AND STOP SWITCH REMOVAL; After adjustment, make sure of following:
SOI 03.06 FV 32/38 599 36 78-45 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE MONITORED LATCH SWITCH, MONITOR SWITCH AND STOP SWITCH REMOVAL 1. CARRY OUT 3D CHECKS. 2. Remove the control panel assembly referring to "CONTROL PANEL ASSEMBLY REMOVAL". 3. Disconnect the all leads from the switc...
Page 33 - DOOR DISASSEMBLY; REMOVAL; bend or warp the slit choke (tabs on the door panel
SOI 03.06 FV 33/38 599 36 78-45 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE DOOR DISASSEMBLY REMOVAL 1. Disconnect the power supply cord. 2. Open the door slightly and remove the built in frame assembly(Ref: to chapter built in frame assembly removal). 3. Remove the choke cover taking care not to...
Page 34 - REQUIREMENT; at any; PREPARATION FOR TESTING:; NARDA; Microwave leakage measurement at 5 cm distance
SOI 03.06 FV 34/38 599 36 78-45 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE INNER SEALER FILM Installation 1. Tear away the backing film. 3. Put the pasted side of the inner sealer film on the door panel. Figure C-6. Inner Sealer Film MICROWAVE MEASUREMENT After adjustment of door latch switches,...
Page 35 - TEST DATA AT A GLANCE
SOI 03.06 FV 35/38 599 36 78-45 TEST DATA AT A GLANCE Parts Symbol Value / Data Thermal cut-out (OVEN) TC01 145°C Oven lamp OL 240-250V 25W High voltage capacitor C 1.02µF AC 2100V Magnetron MG Filament < 1 Ω Filament – chassis ∞ ohm. Power transformer T Filament winding < 1 Ω Secondary windin...
Page 36 - SCHEMATIC DIAGRAMS
SOI 03.06 FV 36/38 599 36 78-45 SCHEMATIC DIAGRAMS Figure 0-1 Oven Schematic-OFF Condition, Door Closed. Figure 0-2 Oven Schematic-ON Condition, Door Closed (Microwave Cooking) . FUSE MAGNE T RON THERMAL CUT OUT N OISE FILTER UNIT F1 FUSE N OISE S O PPR E SSIO N C OIL OVEN THERMAL CUT OUT S W ITCH S...
Page 38 - PICTORIAL DIAGRAMS
SOI 03.06 FV 38/38 599 36 78-45 PICTORIAL DIAGRAMS Figure S-1 Pictorial Diagram . TURNTE B LE MO TO R P O WE R T RANS FORME R LATCH S W ITCH H.V . CAP ACITOR H.V . RE CTIFIE R SHO R T PRO T ECT O R HIGHT VOLTAGE CO M P ONENTS MAG N E T RO N (*) FAN MOTOR M A IN S SU PPLY C O R D NOISE FILTER UNIT OV...
