Service Manual
Page 3
... with loose mounting screws or if improperly grounded. Do not test oven while Inverter grounding plate or screws are loose. Replace as the high voltage transformer and high voltage capacitor in circuit. High voltage may remain in ordinary microwave ovens. 2. 3. Even when replacing board, extreme care should be taken to adjust without...
... with loose mounting screws or if improperly grounded. Do not test oven while Inverter grounding plate or screws are loose. Replace as the high voltage transformer and high voltage capacitor in circuit. High voltage may remain in ordinary microwave ovens. 2. 3. Even when replacing board, extreme care should be taken to adjust without...
Service Manual
Page 6
...pads. (Press 3 to 2nd stage cooking. 1.0 0 3. SCROLL DISPLAY 88.88 OPERATION 8. Time Cooking for 1 minute by pressing appropriate Number pads. 11 25 4. Press Inverter Turbo Defrost pad. Press Auto Cook pad. Press Clock pad. 3. When 1st stage cooking time has elapsed. Press Start Pad. 4.23... pad. . 5 7. When cooking time has elapsed, oven beeps 5 times and shuts off . If you pluge the power supply cord into the wall outlet, microwave oven automatically enter into the state of day or colon if set appers in the oven. 2. Enter time of day (TOD) by pressing Number pads...
...pads. (Press 3 to 2nd stage cooking. 1.0 0 3. SCROLL DISPLAY 88.88 OPERATION 8. Time Cooking for 1 minute by pressing appropriate Number pads. 11 25 4. Press Inverter Turbo Defrost pad. Press Auto Cook pad. Press Clock pad. 3. When 1st stage cooking time has elapsed. Press Start Pad. 4.23... pad. . 5 7. When cooking time has elapsed, oven beeps 5 times and shuts off . If you pluge the power supply cord into the wall outlet, microwave oven automatically enter into the state of day or colon if set appers in the oven. 2. Enter time of day (TOD) by pressing Number pads...
Service Manual
Page 10
...The coil of power relay B is as the H.V. The digital programmer circuit controls the ON-OFF time of the microwave oven from the microcomputer in the display window. Inverter Turbo Defrost When this signal will be switched ON-OFF by a control signal from the line voltage,120v 60Hz AC... tube is rectified to 2,000V AC and approximately 3V AC by the signal output from the current transformer built into the inverter ciruit. 6. The AC input voLtage 120V 60HZ is always monitored by means of microwave power since approximately 2 seconds are required for the magnetron. 5.
...The coil of power relay B is as the H.V. The digital programmer circuit controls the ON-OFF time of the microwave oven from the microcomputer in the display window. Inverter Turbo Defrost When this signal will be switched ON-OFF by a control signal from the line voltage,120v 60Hz AC... tube is rectified to 2,000V AC and approximately 3V AC by the signal output from the current transformer built into the inverter ciruit. 6. The AC input voLtage 120V 60HZ is always monitored by means of microwave power since approximately 2 seconds are required for the magnetron. 5.
Service Manual
Page 12
...continuity check reads shorted contacts (1-2). (A) This is turned off, an electric charge remains in the high voltage capacitors in the inverter power supply circuit board. WARNING OF DISCHARGING HIGH VOLTAGE CAPACITORS Warning about 30 seconds after the oven is mandatory. MAGNETRON INSULATED ...) is grounded properly before beginning repair work on a 2-wire extension cord. Inverter Warnings NEW H.V. WARNING When the 18 Amp. Never insert a wire, nail or any other appliances, the microwave oven is extremely large and so danger exists because of magnetron. Though it ...
...continuity check reads shorted contacts (1-2). (A) This is turned off, an electric charge remains in the high voltage capacitors in the inverter power supply circuit board. WARNING OF DISCHARGING HIGH VOLTAGE CAPACITORS Warning about 30 seconds after the oven is mandatory. MAGNETRON INSULATED ...) is grounded properly before beginning repair work on a 2-wire extension cord. Inverter Warnings NEW H.V. WARNING When the 18 Amp. Never insert a wire, nail or any other appliances, the microwave oven is extremely large and so danger exists because of magnetron. Though it ...
Service Manual
Page 13
... sure that all electrical connections are tight before inserting the plug into the wall outlet. (C) Check for microwave energy leakage. (Refer to check if magnetron and the door hinges are neither loose nor missing. After repair...microwave energy leakage.) CAUTION MICROWAVE RADIATION DO NOT BECOME EXPOSED TO RADIATION FROM THE MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY. When the appliance is operating.. *h Magnetron *h High voltage transformer (Located on Inverter (U)) *h High voltage diodes (Located on Inverter (U)) *h High voltage capacitors (Located on Inverter...
... sure that all electrical connections are tight before inserting the plug into the wall outlet. (C) Check for microwave energy leakage. (Refer to check if magnetron and the door hinges are neither loose nor missing. After repair...microwave energy leakage.) CAUTION MICROWAVE RADIATION DO NOT BECOME EXPOSED TO RADIATION FROM THE MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY. When the appliance is operating.. *h Magnetron *h High voltage transformer (Located on Inverter (U)) *h High voltage diodes (Located on Inverter (U)) *h High voltage capacitors (Located on Inverter...
Service Manual
Page 14
The membrane key board is no gap between the waveguide and the magnetron to prevent microwave leakage. Low voltage transformer and/or power relays (RY1, RY2) NOTE: Be sure to ground any problems (shorted contacts or uneven surface) can be ... screws in place. 2. Fan motor (A) Disconnect 2 lead wires from fan motor terminals. (B) Remove 1 screw at located on oven attaching orifice assembly. (C) Remove orifice assembly/Inverter power supply (U) from oven assembly. (Refer page 15) (D) Remove fan blade from the fan motor shaft by pulling it straight out. (E) Remove 2 screws holding fan...
The membrane key board is no gap between the waveguide and the magnetron to prevent microwave leakage. Low voltage transformer and/or power relays (RY1, RY2) NOTE: Be sure to ground any problems (shorted contacts or uneven surface) can be ... screws in place. 2. Fan motor (A) Disconnect 2 lead wires from fan motor terminals. (B) Remove 1 screw at located on oven attaching orifice assembly. (C) Remove orifice assembly/Inverter power supply (U) from oven assembly. (Refer page 15) (D) Remove fan blade from the fan motor shaft by pulling it straight out. (E) Remove 2 screws holding fan...
Service Manual
Page 21
...high voltage capacitor. 4. Do not touch any parts of latch switches 2. SYMPTOM 1. Oven is opened. 1. No display and no microwave oscillation. (No heat while oven lamp and fan motor turn on the digital programmer circuit, since static electric discharge may damage this ...lead wire and then disconnect it is defective. Defective high voltage component HV Inverter Power Supply (u) Magnetron 4. Defective DPC or power relay B (RY-1) Refer to DPC troubleshooting Adjust door and latch switches. 6. Microwave output is present on ) CAUSE 1. Off-alignment of magnetron filament circuit.(...
...high voltage capacitor. 4. Do not touch any parts of latch switches 2. SYMPTOM 1. Oven is opened. 1. No display and no microwave oscillation. (No heat while oven lamp and fan motor turn on the digital programmer circuit, since static electric discharge may damage this ...lead wire and then disconnect it is defective. Defective high voltage component HV Inverter Power Supply (u) Magnetron 4. Defective DPC or power relay B (RY-1) Refer to DPC troubleshooting Adjust door and latch switches. 6. Microwave output is present on ) CAUSE 1. Off-alignment of magnetron filament circuit.(...
Service Manual
Page 23
...be replaced with AC Ampere meter used H97, H98, H99 appears in display window a short time after start key is pressed and there is no microwave oscillation with a new one . * Check magnetron filament for operation. H97, H98, and H99 are OK up to repair this point, there ...H99 appears in display window a short time after start key is pressed and no microwave oscillation. Inverter problem (SEE NOTE) NOTE: After check, unplug unit to reset to normal operation mode. Operating a misaligned Inverter circuit is dangerous due to the very high voltage and current that is produced by ...
...be replaced with AC Ampere meter used H97, H98, H99 appears in display window a short time after start key is pressed and there is no microwave oscillation with a new one . * Check magnetron filament for operation. H97, H98, and H99 are OK up to repair this point, there ...H99 appears in display window a short time after start key is pressed and no microwave oscillation. Inverter problem (SEE NOTE) NOTE: After check, unplug unit to reset to normal operation mode. Operating a misaligned Inverter circuit is dangerous due to the very high voltage and current that is produced by ...