R-7N76(W)M
R-7N76(B)M
19
TEST PROCEDURES (CONT'D)
PROCEDURE
LETTER
COMPONENT TEST
AH SENSOR TEST
Checking the initial sensor cooking condition
(1) The oven should be plugged in at least five minutes before sensor cooking.
(2) Room temperature should not exceed 35˚C.
(3) The unit should not be installed in any area where heat and steam are generated. The unit should not
be installed, for example, next to a conventional surface unit. Refer to the "INSTALLATION
Instructions" .
(4) Exhaust vents are provided on the back of the unit for proper cooling and air flow in the cavity. To permit
adequate ventilation, be sure to install so as not to block these vents. There should be some space for air
circulation.
(5) Be sure the exterior of the cooking container and the interior of the oven are dry. Wipe off any moisture with
a dry cloth or paper towel.
(6) The Sensor works with food at normal storage temperature. For example, chilled convenience food would
be at refrigerator temperature and canned soup at room temperature.
(7) Avoid using aerosol sprays or cleaning solvents near the oven while using Sensor settings. The sensor will
detect the vapor given of by the spray and turn off before food is properly cooked.
(8) After 5 min.30 sec if the sensor has not detected the vapor of the food in LOGICOOK DRINK mode, "STIR"
will appear and the oven will shut off.
Water load cooking test
Make sure the oven has been plugged in at least five minutes before checking sensor cook operation. The
cabinet should be installed and screws tightened.
(1) Fill approximately 200 milliliters (7.2 oz) of tap water in a 1000 milliliter measuring cup.
(2) Place the container on the center of tray in the oven cavity.
(3) Close the door.
(4) Touch "LOGICOOK DRINK" pad once. Now, the oven is in the sensor cooking condition. "DRINK" will
appear and flash on and off in the display.
(5) The oven will operate for the first 16 seconds, without generating microwave energy.
NOTE: ERROR will appear if the door is opend or STOP/CLEAR pad is touched during first stage of sensor
cooking
(6) After approximately 16 seconds, microwave energy is produced, oven should turn off after water is heating.
If the oven does not turn off, replace the AH sensor or check the control unit, refer to explanation below.
TESTING METHOD FOR AH SENSOR AND/OR CONTROL UNIT
To determine if the sensor is defective, the simplest method is to replace it with a new replacement 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 and check the sensor cook operation proceed as follows:
6-1. Fill approxmately 200 milliliters (7.2 oz) of tap water in a 1000 milililiter measuring cup.
6-2. Place the container on the center of tray in the oven cavity.
6-3. Close the door.
CHECKING CONTROL UNIT
(1) Disconnect oven from power supply and remove outer case.
(2) Discharge the high voltage capacitor.
(3) Disconnect the wire leads from the cook relay.
(4) Disconnect the sensor connector that is mounted to control panel.
(5) Then connect the dummy resistor circuit (see fig.) to the sensor connector of control panel.
(6) Reconnect the oven to the power supply and check the sensor cook operation proceed as follows:
6-1. Touch "LOGICOOK DRINK" pad once.
6-2. The control panel is in the sensor cooking operation.
6-3. After approxmately 60 seconds, push plunger of select switch. This condition is same as judgement
by AH sensor.
6-4. After approxmately 13 seconds, cooking operation turns off, an audible signal will sound, and the
display will show "STIR".
