Samsung MAGNETRON DE6612-D, Руководство по обслуживанию

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6. Alignment and Adjustments
6-1 Low Voltage Transformer
6-2. Magnetron
6-3. High Voltage Capacitor and High Voltage Surge-absorber Capacitor.
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1. The low voltage transformer is located on the control circuit board.
2. Remove the low voltage transformer from the PCB Ass’y and check continuity.
3. Normal resistor reading is shown in the table.
Terminals
Resistance
SLV-4300B
1-2(Input)
2-3(Input)
3-4(Input)
14.0
16.0
10.0
(Room emperature = 20 )
Pri 2
12V
0V
2
1
3 4
5
12V
Sec 2
Pri 1
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 termi-nals
should indicate one ohm or less.
4. A continuity check between each filament terminal and
magnetron case should read open.
1. Check continuity of the capacitor with the meter ser at the highest resistance scale.
2. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates .
3. A shorted capacitor will show continuous continuity.
4. An open capacitor will show constant .
5. Resistance between each terminal and chassis should read infinite.