Sanyo EM-C1800MK Service Manual page 10

CONDITION
C. ERROR INDICATION
This model has some self diagnosis functions.
Display shows "E" depending on the trouble.
DISPLAY
E-21 Thermistor for duct of cavity top is operated by
over heating of 120
E-31
E-32
U-10
The purpose of this function is to prevent opera-
U-50
tion when there is no food in the oven
TROUBLE
Low microwave
output
Uneven heating
Trouble
°C
Thermistor for lower magnetron or duct is
shorted.
Thermistor for lower magnetron or duct is dis-
connected or removed from connector socket.
Thermistor for Magnetron is operated by over
°C
heating of 200
CHECK
H.V Transformer
H.V Capacitor
Magnetron
H.V Diode
Fuse Diode
Magnetron
Rotation of top or
bottom anttena
Situation
Buzzer will continuously beep tone. Blower
motor will stop immediately. Then oven will
stop heating.
Blower motor will stop immediately. Then
oven will stop heating.
Oven will stop heating.
Blower motor will be operated.
Buzzer will continuously beep tone.
Blower motor will stop immediately.
Then oven will stop heating.
Open and close the door, and then touch
the key before 1 minute passes
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RESULT REMEDY
Shorted Replace
Shorted Replace
Shorted Replace
Shorted Replace
Shorted Replace
Poor
Replace
oscillation
Rotation Repair or
stop replace