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5. Alignment and Adjustments
1. Remove connectors from the transformer terminals
and check continuity.
2. Normal resistance readings are as follows:
Secondary
Filament
Primary
Approx. 137Ω
Approx. 0Ω
Approx. 1.594Ω
(Room temperature = 20°C)
PRECAUTION
1. High voltage is present at the high voltage terminals during any cook cycle.
2. It is neither necessary nor advisable to attempt measurement of the high voltage.
3. Before touching any oven components or wiring, always unplug the oven from its power source and
discharge the high voltage capacitor.
1. Continuity checks can indicate only an open
fi lament or a shorted magnetron. To diagnose an
open fi lament or shorted magnetron :
2. Isolate the magnetron from the circuit by
disconnecting its leads.
3. A continuity check across the magnetron fi lament
terminals should indicate one ohm or less.
4. A continuity check between each fi lament terminal
and magnetron case should read open.
Primary
Terminals
Cooling Fins
5-3 Magnetron
5-1 High Voltage Transformer
5-2 Low Voltage Transformer
1. The low voltage transformer is located on the
Assy base plate.
2. Remove the low voltage transformer from the
Assy base plate and check continuity.
3. Normal resistor reading is shown in the table.
Terminals
Resistance
1~2(Input)
3~4(Output)
5~6(Output)
290
Ω
4.0
Ω
1.0
Ω
