Samsung ME21F707MJT, Руководство по обслуживанию

Страница: 22 / 43

22
4. Alignment and Adjustments
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.
4-1 High Voltage Transformer
1. Remove connectors from the transformer terminals and
check continuity.
2. Normal resistance readings are as follows:
<ME21F707MJT/AA>
SHV-U1870D
Secondary $SSUR[Ÿ
Filament Shows Continuity
Primary $SSUR[Ÿ+LJK
$SSUR[Ÿ/RZ
<ME21F707MJT/AC>
SHV-U1850A
Secondary $SSUR[Ÿ“
Filament Shows Continuity
Primary $SSUR[Ÿ“+LJK
$SSUR[Ÿ“/RZ
(Room temperature = 20°C)
&ILAMENT
4ERMINALS
3ECONDARY
4ERMINAL
0RIMARY
4ERMINAL
4-2 Magnetron
1. &RQWLQXLW\FKHFNVFDQLQGLFDWHRQO\DQRSHQ¿ODPHQWRU
DVKRUWHGPDJQHWURQ7RGLDJQRVHDQRSHQ¿ODPHQWRU
shorted magnetron.
2. Isolate the magnetron from the circuit by disconnecting its
leads.
3. $FRQWLQXLW\FKHFNDFURVVWKHPDJQHWURQ¿ODPHQWWHUPLQDOV
should indicate one ohm or less.
4. $FRQWLQXLW\FKHFNEHWZHHQHDFK¿ODPHQWWHUPLQDODQG
magnetron case should read open.
#OOLING&INS
-AGNETRON!NTENNA
'ASKET0LATE
4-3 High Voltage Capacitor
1. Check continuity of the capacitor with the meter set at the highest resistance scale.
2. 2QFHWKHFDSDFLWRULVFKDUJHGDQRUPDOFDSDFLWRUVKRZVFRQWLQXLW\IRUDVKRUWWLPHDQGWKHQLQGLFDWHV0ȍ
3. A shorted capacitor will show continuous continuity.
4. $QRSHQFDSDFLWRUZLOOVKRZFRQVWDQW0Ÿ
5. 5HVLVWDQFHEHWZHHQHDFKWHUPLQDODQGFKDVVLVVKRXOGUHDGLQ¿QLWH