Panasonic NE-2140, Service Manual

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bracket by moving it to either direction as shown in figure.
16.4. Measurement of microwave output
The output power of the magnetron can be determined by performing IEC standard test procedures.
However, it is possible to test the magnetron by following procedure outlined below.Necessary
equipment:
- 1 litre beaker
- Glass thermometer
- Wrist watch or stopwatch
NOTE
Check the line voltage under load to ensure it meets specifications. Low voltage condition will cause a
reduction in magnetron output. Temperature readings and heating time, should be as accurate as
possible.
Output power performance test procedure.
1. Fill the beaker with exactly one litre of tap water. Stir the water using
the thermometer and note the temperature. (Record as T1)
2. Place the beaker in the center of cook plate. Set the oven for High
power and heat for exactly one minute.
3. After completion of the heating cycle, stir the water again with the
thermometer and note the temperature. (Record as T2)
The normal temperature rise (T2 — T1) at High power position for each models is as shown in following
table.
Model Temperature Rise / (1
liter — 1 Min.)
NE-3280 / NE-3240 Min. 27.4°C
NE-2180 / NE-2140 Min. 18°C
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