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5.2 How to Turn Magnetrons On/Off for Testing
The magnetrons may be turned on/off for testing using the MAINTenance mode. The
magnetrons will remain on in this mode as long as the appropriate key is depressed.
Caution: Do not operate the magnetrons for more than 5 seconds without a load
in the cooking chamber. A suitable microwave load is 275 ml (9.3 oz) of cold
water.
With the oven in the normal "ON" state:
1. Press MAINTenance key.
2. Enter access code.
3. Press ENTER.
4. Magnetron 1: Press and hold (M1) key. Verify LED 14 (M1) illuminates on the oven
keypad.
5. Magnetron 2: Press and hold (M2) key. Verify LED 15 (M2) illuminates on the oven
keypad.
6. Both Magnetrons (M12): Press and hold (M12) key. Verify LED 14 (M1) & LED15
(M2) illuminate on the oven keypad LED display.
7. Press the STOP key to return to the normal mode from the maintenance mode.
Note: When energizing the magnetrons (M1), (M2) or (M12), check for fluctuation
of RF power on the oven display due to the stirrer blade motion causing the
microwave energy to move around in the cooking chamber. The RF power
indication should be varying significantly during operation. The RF indication is
sampled for 10 seconds. If the difference between the maximum sample and
minimum sample is less than 50 units during self-test or 20 units during cooking,
the error message "RF FLUC LOW" will be displayed.
TurboChef, Inc.
700-0655.DOC Rev B February 15, 1997
Page 34 of 62
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