
NOTE: A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON.
BEFORE TOUCHING any parts of the oven, always remove the power plug from the outlet.
For about 60 seconds after the oven stops, an electric charge remains in the high voltage capacitor. When replacing or checking, you must wait to permit the capacitor
discarding.
Troubleshooting guide
4.2
Microwave oven doesn’t work
Anomaly
Possible Cause
Corrective Action
section
Oven does not run
No power supply
Inserting many plugs into one
outlet and using them at the
same time (blown fuse or
breaker)
Avoid using other electrical
appliances when you use the
microwave oven.
Replace the fuses
--
Short circuit
Find the short circuit and remove it.
Check internal connections (short circuit, interruptions,
etc..)
--
Microwave oven plug is not
inserted tightly.
Insert microwave oven plug
securely.
--
Oven does not run
Power supply ok.
Door switches damaged
Check for continuity of the switch with an Ohm-meter
--
Connections to the Electronic
Control
Replace the Power Board
7.18
Check the main fuse on Electronic Board
--
Magetron is damaged
1. Measure the resistance. (Ohm-meter scale: Rx1)
• Filament terminal (Wire leads are removed)
Normal: Less than 1 ohm
2. Measure the resistance. (Ohm-meter scale: Rx1000)
• Filament to chassis (Wire leads are removed)
Normal readings: Infinite
7.8
Fuse is interrupted
Check continuity of fuse by ohm - meter
7.19
Содержание CM209WH
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