Sharp R-380D Service Manual page 7

An example of how sensor works:
1. Potatoes at room temperature. Vapor is emitted very
slowly.
2. Heat potatoes. Moisture and humidity is emitted rapidly.
You can smell the aroma as it cooks.
3. Sensor detects moisture and humidity and calculates
cooking time and variable power.
AH SENSOR
Cooking Sequence.
1. Touch each SENSOR COOK or SENSOR INSTANT
REHEAT function pad to operating the sensor cooking.
(See the operation manual for the proper procedure.)
NOTE: The oven should not be operated on SENSOR
COOK or SENSOR INSTANT REHEAT
immediately after plugging in the unit. Wait two
minutes before cooking on SENSOR COOK or
SENSOR INSTANT REHEAT.
2. The coil of shut-off relay (RY-1) is energized, the
turntable motor, oven lamp and cooling fan motor are
turned on, but the power transformer is not turned on.
3. After about 16 seconds, the cook relay (RY-2) is
energized. The power transformer is turned on,
microwave energy is produced and first stage is started.
The 16 seconds is the cooling time required to remove
any vapor from the oven cavity and sensor.
NOTE: During this first stage, do not open the door or
touch STOP/CLEAR pad.
4. When the sensor detects the vapor emitted from the
food, the display switches over to the remaining cooking
time and the timer counts down to zero.
At this time, the door may be opened to stir food, turn
it or season, etc.
5. When the timer reaches zero, an audible signal sounds.
The shut-off relay and cook relay are de-energized and
the power transformer, oven lamp, etc. are turned off.
6. Opening the door or touching the STOP/CLEAR pad,
the time of day will reappear on the display and the
oven will revert to an OFF condition.
5
R-380D