R-930AK

R-930AW

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT TEST

NOTE: ERROR will appear if the door is opened or STOP/CLEAR pad is touched during first stage of sensor cooking.

(6)After approximately 16 seconds, microwave energy is produced, and the display should start to count down the remaining cooking time and oven should turn off after water is boiling (bubbling).

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 approximately 200 milliliters (7.2 oz) of tap water in a 1000 milliliter measuring cup.

6-2. Place the container on the center of tray in the oven cavity.

6-3. Close the door.

6-4. Touch SENSOR COOK pad and number 1 pad.

6-5. Touch Start pad. The control panel is in automatic Sensor operation.

6-6. The display will start to count down the remaining cooking time, and the oven will turn off automatically after the water is boiling (bubbling).

If new sensor dose not operate properly, the problem is with the control unit.

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 lower portion of 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 SENSOR COOK pad and number 1 pad.

6-2. Touch Start pad. The control panel is in the sensor cooking operation.

6-3. After approximately 20 seconds, push plunger of select switch for more than 3 seconds. This

condition

is same as judgement by AH sensor.

 

6-4. After approximately 3 seconds, the display shows " X X . X X " which is the remaining cooking

time, and the display count down.

 

 

 

 

If the above is not the case, the control unit is probably defective.

 

If the above is proper, the AH sensor is probably defective.

 

 

 

 

 

 

 

Plunger

 

 

R1,R2 : 22Ω ±

1% 1/2W

NC

 

 

NO

 

 

R3 : 4.3kΩ ± 5% 1/4W

 

To connector (F)

R4 :

1M

5% 1/4W

 

 

 

 

Ω ±

 

COM

 

on Control Unit.

 

 

 

 

 

 

 

 

 

 

F-1

1

 

 

 

 

NO

2

 

 

 

COM

F-2

 

R1

 

 

3

 

 

 

 

 

 

 

 

 

 

F-3

 

 

R2

R3

R4

NC

 

CONNECTOR

 

 

 

 

 

 

 

 

 

Sensor Dummy Resistor Circuit

 

20

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Sharp R-930AW service manual Test Procedures Letter Component Test, Testing Method for AH Sensor AND/OR Control Unit

R-930AW specifications

The Sharp R-930 series of microwave ovens, including the R-930AK, R-930AW, and R-930CS models, represent a blend of advanced technology and user-centric design. These units are well-suited for modern kitchens, offering convenience, versatility, and efficiency that meet the needs of busy households.

One of the standout features of the R-930 series is the powerful Inverter Technology. Unlike traditional microwaves that rely on pulsing power to cook food at lower settings, Inverter Technology delivers a steady stream of cooking power. This results in more even heating, improved texture, and better overall cooking results for delicate dishes like custards and sauces.

The spacious interior of these models provides ample room for cooking a variety of dishes simultaneously. The R-930 series is designed with a turntable that ensures uniform cooking by rotating food as it heats. Additionally, these microwaves often come with a variety of pre-programmed settings for popular dishes, making it easier for users to prepare meals with minimal effort. These presets take the guesswork out of cooking and help ensure consistent results every time.

The R-930AK and R-930AW models are particularly noted for their sleek and modern aesthetic, available in stylish black and white exteriors, respectively. Both models also feature user-friendly controls, which include a digital display and intuitive buttons, ensuring that even those new to microwave cooking can navigate settings with ease.

Another characteristic that distinguishes the R-930CS is its advanced sensor cooking technology. This feature monitors the cooking process and automatically adjusts power levels and cooking times to achieve optimal results. This takes the hassle out of determining how long to cook various foods, especially those that require specific attention to avoid overcooking or undercooking.

The Sharp R-930 series also emphasizes safety and convenience. Child safety locks are integrated into the design to prevent unauthorized use, making it a practical choice for families with young children. Moreover, the easy-clean interior ensures that spills and splatters can be quickly wiped away, maintaining hygiene and preserving the appliance's appearance.

In summary, the Sharp R-930AK, R-930AW, and R-930CS models are proficient microwave ovens equipped with innovative technologies and thoughtful features that cater to a variety of cooking needs. With their combination of inverter cooking technology, spacious interiors, sleek designs, and user-friendly controls, these models are ideal choices for anyone looking to enhance their culinary capabilities in a fast-paced world.