Sharp R-930CS Service Manual page 26

R-930CS
PROCEDURE
LETTER
(8) After that procedure, re-connect the power supply cord.
(9) Check the sensor cook operation proceed as follows:
9-1. Touch SENSOR COOK pad and then touch the number pad 1. And touch Start pad.
9-2. The control panel is in the sensor cooking operation.
9-3. After approximately 20 seconds, push plunger of select switch for more than 3 seconds. This
9-4. After approximately 3 seconds, the display shows " X X . X X " which is the remaining cooking
If the above is not the case, the control unit is probably defective.
If the above is proper, the AH sensor is probably defective.
(10) Disconnect the power supply cord, and then remove outer case.
(11) Open the door and block it open.
(12) Discharge high voltage capacitor.
(13) Disconnect the dummy resistor circuit from the sensor connector of control panel.
(14) Carry out necessary repair.
(15) Reconnect all leads removed from components during testing and repairing.
(16) Re-install the outer case (cabinet).
(17) Reconnect the power supply cord after the outer case is installed. Run the oven and check all
functions.
(18) Carry out "Water load cooking test" again and ensure that the oven works properly.
TEST PROCEDURES
condition is same as judgement by AH sensor.
time, and the display count down.
To connector (F)
on Control Unit.
F-1
F-2
F-3
CONNECTOR
Sensor Dummy Resistor Circuit
COMPONENT TEST
R1, R2 : 22 1% 1/2W
R3 : 4.3k 5% 1/4W
R4 : 1M 5% 1/4W
1
2
R1
3
R3 R4
R2
24
Plunger
NC
NO
COM
NO
COM
NC