Service Manual EMWK 1060.0
21
For internal use only
8.3
Magnetron check - Resistance measurement
8.4
High-voltage transformer
8.5
High-voltage capacitor
Caution
:
Before checking parts of the high-voltage circuit, always discharge the high-
voltage capacitor.
Measuring resistance:
Target value:
With ohmmeter (scale Rx1) between the
connections of the heating filaments of the
magnetron.
> 1
Ω
With ohmmeter at maximum measuring range
between each of the heating filament
connections and the earthed frame.
infinite
Measure resistance:
Target
value:
With ohmmeter (scale Rx1)
Primary coil
Heating filament
Secondary coil
about 1.24
Ω
> 1
Ω
about 87
Ω
With ohmmeter at maximum measuring range
Primary coil - earth
Heating filament - earth
infinite
infinite
Measure resistance:
Target value:
With ohmmeter at maximum measuring range
between the connections
Briefly several ohms, then back to “infinite”
Abnormal result:
Continuity or “infinite” from the very start
Terminals
Outer housing
Summary of Contents for EMWK 1060.0
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