Samsung Electronics
5. Alignment and Adjustments
5-1 High Voltage Transformer
5-2 Magnetron
5-1
1. Remove connectors from the transformer terminals
and check continuity.
2. Normal resistance readings are as follows:
(Room temperature = 20˚C)
1. Continuity checks can indicate only an open
filament or a shorted magnetron. To diagnose an
open filament or shorted magnetron :
2. Isolate the magnetron from the circuit by
disconnecting its leads.
3. A continuity check across the magnetron filament
terminals should indicate one ohm or less.
4. A continuity check between each filament terminal
and magnetron case should read open.
Filament Terminals
Secondary
Terminal
Primary
Terminals
Secondary
Approx. 100
Ω
Filament
Approx.0
Ω
Primary
Approx.1.456
Ω
Cooling Fins
Gasket Plate
Magnetron Antenna
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.
5-3 High Voltage Capacitor
1. Check continuity of the capacitor with the meter set at the highest resistance scale.
2. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates 9M
Ω.
3. A shorted capacitor will show continuous continuity.
4. An open capacitor will show constant 9M
Ω.
5. Resistance between each terminal and chassis should read infinite.