Panasonic NN-GS597M, Service Manual

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4.5. Combination cook control
Combination cooking is accomplished by microwave and grill
cooking (upper heater) being done synchronously during one
combination cooking cycle. One combination cooking cycle is
33 seconds.
1. During combination cooking, the digital programmer circuit
controls power relay RY4´s ON-OFF time. In all three
combination cooking categories, power relay RY3 always
stay on, but RY4´s ON-OFF time as shown in Figure.
COMBINATION
CATEGORY
GRILL(RY4) MICROWAVE
(sec.)
ON (sec.) OFF (sec.)
1 33 0 26 ON / 7 OFF
2 24 9 26 ON / 7 OFF
3 18 15 26 ON / 7 OFF
4.6. IR reheat
The temperature of food being heated is detected by an
infrared (IR) sensor and you do not have to set time.
4.6.1. How to read temperature by IR
sensor
IR sensor can read food temperature without touching, IR rays
are emitted from food. IR sensor is to generate temperature
related electric signal output and microcomputer is to convert
actual temperature.
4.6.2. Operation
IR sensor is mounted on top right of oven cavity through the
hole. It scans all over cooking shelf. IR sensor has 8 eyes and
can read oven shelf left to right at the time. Then IR sensor is
designed to scan front to back to cover all over shelf. (19
points)
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NN-GS597M