| TEST PROCEDURES | |
PROCEDURE | COMPONENT TEST | |
LETTER | ||
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If the control unit responds by clearing with a beep the key unit is faulty and must be replaced. If the control unit does not respond, it is a faulty and must be replaced. If a specific pad does not respond, the above method may be used (after clearing the control unit) to determine if the control unit or key pad is at fault.
| G 5 | G 6 | G 7 | G 8 | G 9 | G10 | G11 | G12 | |
G 4 | MINUTE | COMPU | SENSOR | COMPU | COMPU | COMPU | BROIL | HIGH MIX | |
PLUS | DEFROST | COOK | BROIL | ROAST | BAKE | ROAST | |||
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G 3 | POPCORN PREHEAT CONVEC | 1 | 2 | 3 | 4 | 5 | |||
100˚F | 150˚F | 275˚F | 300˚F | 325˚F | |||||
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G 2 | SENSOR | SLOW | LOW MIX | 6 | 7 | 8 | 9 | 0 | |
REHEAT | COOK | BAKE | 350˚F | 375˚C | 400˚F | 425˚F | 450˚F | ||
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G 1 | CUSTOM |
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| KITCHEN | POWER | CLOCK | START | STOP | |
HELP |
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| TIMER | LEVEL | TOUCH ON | CLEAR | |||
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SRELAY TEST
Remove the outer case and check voltage between Pin Nos. 7 and 9 of the 9- pin connector (A) on the control unit an A.C. voltmeter. The meter should indicate 120 volts, if not check the oven circuitry.
Check voltage at the relay coil with a D.C. voltmeter during the microwave cooking operation or convection cooking operation.
DC. voltage indicated ............. Defective relay.
DC. voltage not indicated ........ Check diode which is connected to the relay coil. If diode is good, control
unit is defective.
RELAY SYMBOL | OPERATIONAL VOLTAGE | CONNECTED COMPONENTS |
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RY1 | Approx. 19.0V D.C. | Oven lamp / Turntable motor |
RY2(COOK) | Approx. 18.0V D.C. | Power transformer |
RY3(HEATER) | Approx. 18.0V D.C. | Heating element |
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RY4 | Approx. 19.0V D.C. | Damper motor |
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RY5 | Approx. 19.0V D.C. | Convection motor |
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RY6 | Approx. 19.0V D.C. | Cooling fan motor |
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T | COMPU DEFROST TEST |
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| (1) | Place one cup of water in the center of the turntable tray in the oven cavity. |
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| (2) Close the door, touch the "COMPU DEFROST" pad twice and touch the Number pad "5". And then touch | |||||||||||
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| (3) | After 2 sec. Now the oven is in COMPU DEFROST cooking condition. |
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| (4) | The oven will operate as follows. |
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| WEIGHT | 1ST STAGE | 2ND STAGE | 3RD STAGE | 4TH STAGE |
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| LEVEL | TIME | LEVEL | TIME | LEVEL | TIME | LEVEL | TIME |
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| 0.5lbs | 70% | 47sec. | 0% | 52sec. | 50% | 32sec. | 30% | 40sec. |
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| (5) | If improper operation is indicated, the control unit is probably defective and should be checked. | ||||||||||
U PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD (PWB) IS OPEN.
o 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.
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