(3)CHECKOUT PROCEDURES FOR CIRCUIT BOARD
| The following symptoms indicate a defective circuit | 6) | Wrong figures appear. |
| board. | 7) | The figures of all digits. |
1) | The start function fails to operate but the high | 8) | Some of the indicators do no flicker light up. |
| voltage Systems, the interlock switches, the door | 9) | The clock does not keep time properly. |
| sensing and the relay check good. |
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2) | The unit with a normal relay continuously operates. |
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3) | Proper temperature measurement is not obtained. |
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4) | The buzzer does not sound or continues to sound. |
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5) | Some segments of one or more digits do not light |
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| up, or they continue to light up, or segments light |
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| when they should not. |
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NOTE: A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON.
