R-8470
R-8570
(6) After approximately 16 seconds, microwave energy is produced,oven should turn off when
water is boiling (bubling).
If the oven dose not turn off, replace the AH sensor or check the control unit, refer to expla-
nation below:
To determine if the sensor is defective, the simplest method is to replace it with a new re-
placement sensor.
(1) Disconnect oven from power supply and remove outer case.
(2) Discharge the high voltage capacitor.
(3) Remove the AH sensor.
(4) Install the new AH sensor.
(5) Re-install the outer case.
(6) Reconnect the oven to the power supply
the sensor cook operation proceed as
follows:
6-l. Touch SENSOR COOK pad and number 1 pad.
6-2. Touch Start pad. The contorol panel is in the automatic Sensor operation.
6-3. The oven will turn off automatically when the water is boiling (bubling).
N
If new sensor dose not operate propaly, the problem is with the contorol unit.
Disconnect the connector-E from the control unit.
Measure the resistance of the thermistor with an ohmmeter. Connect the ohmmeter leads to Pin
No’s E-l and E-2.
Room Temp.
Resistance
68
86
Approx. 350 155k
If the meter does not indicate above resistance, replace the thermistor.
0
When the power cord is plugged into the wall receptacle, the 240 volts A.C. is supplied to the
damper motor and the motor operates until the damper is opened and the damper switch closes.
Then the damper motor stops operation.
If the damper motor does not operate, check for input voltage by A.C. volt-meter at the motor.
1. Disconnect the power cord from the wall receptacle.
2. Disconnect the wire loads of motor and connect the meter leads to the wire leads of main wire
harness.
3. Reconnect the power cord into the wall receptacle.
If 240 volts A.C. is. indicated at the wire leads, replace the motor.
Not indicated, check the wire harness and the relay unit.
Disconnect the wire leads from the switch terminals and connect the ohmmeter leads to the
common (COM and normaly open (NO) terminal of the switch.
1. When switch actuator is pushed by the damper motor cam, the meter should indicate a closed
circuit.
2. When the power cord is plugged into the wall receptacle, the damper motor operates and
damper cam rotates. The switch
is released and meter sould indicate an open circuit.
If improper operation is indicated, replace the damper switch.
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Summary of Contents for R-8470
Page 2: ...I R 8470 R 8570 R 8470 R 8570 ...
Page 23: ...R 8470 R 8570 1 I 2 3 4 5 6 1 2 Figure T l Block Daigram 3 4 5 I I 6 21 ...
Page 50: ...R 8470 R 8570 1 2 3 j 4 5 6 I CABINET PARTS I 1 I 1 I 2 I 3 I 4 I I 5 6 48 ...
Page 51: ...R 8470 R 8570 1 2 3 4 5 6 I i E I I 1 2 49 ...
Page 52: ...R 8470 R 8570 1 2 I 3 4 5 6 1 I 1 I 2 3 4 5 I 6 50 ...
Page 53: ...R 8470 R 8570 1 2 I 3 I 4 5 6 DOOR ASSEMBLY MISCELLANEOUS 6 3 Trans m I I I I I I i I t ...
