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COMPONENT
THERMISTOR
CONVECTION
HEATER
(BACK HEATER)
GRILL HEATER
(UPPER HEATER)
BLOWER
MOTOR
CONVECTION
FAN MOTOR
TURNTABLE
MOTOR
CHECKOUT PROCEDURE
Measure the resistance: Between the Pin 1 and
Pin 3 of connector S103 after disconnecting
it from the control circuit board with an
ohm-meter on the highest scale.
Measure the resistance: After removing the lead
wires from the convection heater with an
ohm-meter on R x 1 scale.
Measure the resistance: After removing the lead
wires from the grill heater with an
ohm-meter on R x 1 scale.
Measure the resistance: After removing the lead
wires from the blower motor with an
ohm-meter on R x 100 scale.
Measure the resistance: After removing the lead wires
from the convection fan motor with an ohm-meter on
R x 100 scale.
Measure the resistance: After removing the lead
wires from the turntable motor with an ohm-meter
on highest scale.
-7-
RESULT
Normal Reading:
Approximately
1800K ohms @ 20˚C
1400K ohms @ 25˚C
Normal Reading:
Approximately 46 ohms
Normal Reading:
Approximately 48.7 ohms
Normal Reading:
Approximately 300 ohms
Normal Reading:
Approximately 180 ohms
Normal Reading:
Approximately 16K ohms
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