Maintenance Service and Trouble Shooting
switches:
When the door is open, the first/second lockout switch is off. The monitoring switch is
on. When the door is close, the switches are in counter mode. You can observe by sight. If
you are not sure, please measure with gauges.
In maintenance, pull the door with hands as slowly as possible to see if the
microswitches act in following turn: in opening: the first lockout switch – the second lockout
switch – monitoring switch; in closing: monitoring switch – the second lockout switch – the
first lockout switch.
If there’s abnormal phenomenon, please adjust the lockout holder.
B. Test of the high-voltage transformer
Item Position
Normal
value
Primary coil
About 1-2
Ω
Secondary coil
About 100-200
Ω
lamp winding
About 0
Ω
Primary coil – shell of the
transformer
Infinite
Resistance
value
lamp winding – shell of the
transformer
Infinite
C. Test of the magnetron
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primary coil
lamp coil
second coil
antenna
shileding
lamp terminal