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Inverter Grounding
WARNING! DISCHARGE THE HIGH VOLTAGE CAPACITORS
For about 30 seconds after the oven is turned off, an electric charge
remains in the high voltage capacitors in the inverter power supply
circuit board.
When replacing or checking parts, remove the power plug from the
outlet and short the inverter output terminal of the magnetron
filament terminals to the chassis ground with an insulated handle
screwdriver to discharge. Please be sure to touch the chassis
ground side first and then short to the output terminals.
Figure 3
Discharging the high voltage capacitors
WARNING
There is high voltage present with high current capabilities in the
circuits of the primary and secondary windings, choke coil and heat
sink of the inverter. It is extremely dangerous to work on or near
these circuits with the oven energized. DO NOT measure the
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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 ...