Sharp AX-GX2T(R) Service Manual page 24

3. How to check sensor (oven thermistor) performance
Power ON the main body.
Set the test mode to 03.
Press the START key.
Does a measured value for the oven thermistor change as oven heating proceeds?
Is the measured value within ±10 bits with respect to the
reference value after about eight (8) minutes?
Press the [
4. C01 Oven thermistor failure
Is the connector between the oven thermistor and board either disconnected or shorted?
Measure the oven thermistor resistance using a tester with the thermistor connecting
The oven thermistor resistance is within its appropriate range.
Replace the control unit or the display unit.
I Before starting the P.W.B. unit replacement, make sure to refer to "Before replacing the Printed Wiring Board" in page 2-2.
5. C02 Humidity sensor failure
Has the humidity sensor connector been disconnected from the control board?
Measure element resistance between the opened and sealed sides of the humid-
ity sensor with the humidity sensor connector disconnected from the board.
Normal resistance of the humidity sensor:
I Before starting the P.W.B. unit replacement, make sure to refer to "Before replacing the Printed Wiring Board" in page 2-2.
(See How to set test mode on page 6-5)
YES
YES
] key to finish the operation. (This action is required when everything is OK.)
NO
connector pulled out of the board.
YES
Note1
NO
NO
NO
C01: Proceed to checking the oven thermistor for failure.
YES
NO
Replace the oven thermistor or the harness.
Note 1. If the display unit is replaced,
carry out " (citrate washing)".
YES
Connect the connector.
Is the resistance 0?
Is the resistance infinite?
Is the resistance normal?
Replace the control board.
6 – 7
Connect or repair the connector.
YES
Replace the humidity sensor.
NO
YES
Replace the humidity sensor.
NO
NO
Replace the humidity sensor.
YES