(3) CHECKOUT PROCEDURES FOR CIRCUIT |
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BOARD |
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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.
3)Proper temperature measurement is not obtained.
4)The buzzer does not sound or continues to sound.
5)Some segments of one or more digits do not light up, or they continue to light up, or segments light when they should not.
NOTE: A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON.