6. Wiring Diagram
7. Description of Operating instruction
7.1. Variable power cooking control
The HIGH VOLTAGE INVERTER POWER SUPPLY controls the output power by a signal from the
digital Programmer circuit DPC. The power relay (RY1) turns on to supply power to the inverter
circuit. The level of output power is controlled by the drive signal level from the inverter circuit.
NOTE1: The ON/OFF time ratio does not correspond with the percentage of microwave power
since approximately 2 seconds are required for heating the magnetron filament. / NOTE: 2 If
microwave cooking is over 8 minutes on HIGH power, the fan motor rotates for 1 minute after
cooking to cool the oven and electrical components.
Duty cycles for microwave cooking
Output
Duty ON/OFF
ON time
OFF time
High
1000W
22”
0”
Defrost
440W
16”
6”
Medium
600W
22”
0”
Low
440W
22”
0”
Simmer
440W
15”
7”
Warm
440W
8”
14”
7.2. Grill Cooking
The digital programmer circuit controls the grill power by operating the power relay RY4 in the
sequence shown in the table below
Duty cycles for Grill Cooking
12
Summary of Contents for NN-A890WB
Page 2: ...2 ...
Page 5: ...Inverter Gounding Figure 2 Inverter PCB layout 2 Feature Chart 5 ...
Page 7: ...4 3 Microwave Cooking 4 4 Auto Weight Defrost 4 5 Delay Stand 7 ...
Page 8: ...4 6 Delay Start 4 7 Child Lock 4 8 Grill Operation 4 9 Convection Operation 8 ...
Page 10: ...4 13 Combination Cooking Turbo Bake and Microwave 4 14 Memory 10 ...
Page 46: ...Removing the oven back plate Figure 15 Removing the base plate Figure 16 46 ...
Page 53: ...53 ...
Page 54: ...Fuses are not blown 54 ...
Page 55: ...55 ...
Page 56: ...56 ...
Page 58: ...58 ...
Page 64: ...64 ...
