Read Panasonic NN-C781JF Service Manual online
5. Combination Cooking
Combination cooking is accomplished by microwave and convection
cooking being done alternately during one combination cooking cycle.
One combination cooking cycle is 22 seconds.
(A) During combination cooking, the digital programmer circuit
controls ON-OFF time of both power relay 1 and 4 as shown in
Figure.
(B) When the power relay 1 (RY1) is turned on, heater turns off and
after the power relay 1 turns off, power relay 4 turns on.
NOTE 1: Note that the heater may not be on during a heater on
period if the preprogrammed oven temperature has been
reached. This is due to the fact that the oven is keeping the
preprogrammed oven temperature constant, so of course
the heater will only be on when it is needed and off when it
is not needed.
NOTE 2: As for temperatures of combination cooking for
convection, the temperatures by each program are
preprogrammed in the microprocessor as shown in Figure.
- 10 -
Combination
No.
1
2
3
Microwave (RY 1)
ON (SEC)
OFF (SEC)
8
5
12
14
17
10
OVEN TEMP
HEATER
(RY4)
CONVECTION
FAN MOTOR
(RY5)
FAN MOTOR
(RY3)
MICROWAVE
(RY1)
SELECTED OVEN TEMP
START
8S
OFF
8S
ON
STOP
14S
ON
ON
14S
OFF
ON/OFF
EX COMEINATION 1
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