Sharp SMD2499FS Service Manual

25
SMD2499FS
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
S Damper motor switch test
1. Disconnect the power supply cord, and then remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect the leads to the primary of the power transformer.
5. Ensure that the leads remain isolated from other components and oven chassis by using insulation tape.
6. Disconnect the wire leads from the switch terminals and connect ohmmeter leads to the common
(COM.) and normally open (N.O.) terminals of the switch.
6-1. When switch actuator is pushed by the damper motor cam, the meter should be indicated a
closed circuit.
6-2. When power cord is plugged into the wall receptacle, the damper motor operates, and damper
cam will start to rotate. When the switch actuator is released, the meter should be indicated
an open circuit.
7. If improper operation is indicated, replace the damper switch.
8. Disconnect the power supply cord, and then remove outer case.
9. Open the door and block it open.
10.Discharge high voltage capacitor.
11.Reconnect all leads removed from components during testing.
12.Re-install the outer case (cabinet).
13.Reconnect the power supply cord after the outer case is installed.
14.Run the oven and check all functions.
T THERMISTOR TEST (Oven and Top convection thermistor)
1. Disconnect the power supply cord, and then remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect thermistor connector. Measure the resistance of the thermistor with an ohmmeter.
Connect the ohmmeter leads to thermistor connector Pin.
Room Temperature Resistance 68°F(20°C) - 86°F(30°C) Approx. 360kΩ - 150KΩ
5. If the meter does not indicate above resistance, replace the thermistor.
6. Reconnect all leads removed from components during testing.
7. Reinstall the outer case (cabinet).
8. Reconnect the power supply cord after the outer case is installed.
9. Run the oven and check all functions

Sharp SMD2499FS Specifications

General

Style	drawer
Color	stainless steel
Total Capacity	1.4 cu. ft.
Convection	yes
Power Levels	11
Sensor Cooking	yes
Quick Start	yes
Timer	yes
Wi-Fi	yes
Remote Control	yes
Max Power Consumption	900 watts
Microwave Power	900 watts
Voltage	115 volts
Current	15

Weight and Dimensions

Depth	20-7/8"; 27"; 20 7/8 inch; 23-1/2"; 16-7/16"
Height	19 1/2 inch; 19-3/4"; 8-3/4"; 19-1/2"; 24-1/2"; 19-3/8"
Width	23-5/8"; 27-1/2"; 22-3/8"; 23 5/8 inch; 23-7/8"; 16-15/16"