17
R-519CK
R-530CK
R-530CW
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
unit and make sure the door sensing switch is closed (either close the door or short the door sensing
switch connecter). Use the Key unit matrix indicated on the control panel schematic and place a
jumper wire between the pins that correspond to the STOP/CLEAR pad making momentary contact.
If the control unit responds by clearing with a beep the key unit is faulty and must be replaced. If the
control unit does not respond, it is a faulty and must be replaced. If a specific pad does not respond,
the above method may be used (after clearing the control unit) to determine if the control unit or key
pad is at fault.
5. Reconnect all leads removed from components during testing.
6. Re-install the outer case (cabinet).
7. Reconnect the power supply cord after the outer case is installed.
8. Run the oven and check all functions.
R-519CK R-530CK/CW
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 these leads remain isolated from other components and oven chassis by using insulation
tape.
6. After that procedure, re-connect the power supply cord.
7. Remove the outer case and check voltage between Pin No. 1 of the 2 pin connector (A) and the
common terminal of the relay RY1 on the control unit with an A.C. voltmeter.
The meter should indicate 120 volts, if not check oven circuit.
RY1 and RY2 Relay Test
These relays are operated by D.C. voltage
Check voltage at the relay coil with a D.C. voltmeter during the microwave cooking operation.
DC. voltage indicated .................... Defective relay.
DC. voltage not indicated .............. Check diode which is connected to the relay coil. If diode is
good, control unit is defective.
RELAY SYMBOL OPERATIONAL VOLTAGE CONNECTED COMPONENTS
RY1 Approx. 24.3V D.C. Oven lamp / Turntable motor / Cooling fan motor
RY2 Approx. 23.4V D.C. Power transformer
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.
K RELAY TEST
WARNING : The oven should be fully assembled before following procedure.
(1) Place one cup of water in the center of the turntable tray in the oven cavity.
L COMPU DEFROST TEST
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4
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21
09876
START
Reheat
Clock
Beverage
Power
Level
Chicken
Pieces
Minute
Plus
Kitchen
Timer
CUSTOM
HELP
Steaks/
Chops
Baked
Potatoes
Fish/
Seafood
Popcorn
Stop
Clear
Frozen
Vegetables
Frozen
Entrees
Fresh
Vegetables
Fresh
Rolls/
Muffins
Frozen
Rolls/
Muffins
Ground Meat
(SENSOR COOK)
Ground Meat
(COMPU DEFROST)
G 8
G 9
G10
G11
G12
G13
G14
G 7 G 6 G 5 G 4 G 3 G 2 G 1
5
4
3
21
09876
Clock
Power
Level
Ground
meat
Frozen
snacks
Minute
Plus
One Dish
Dinners
Lunch on
the Run
Breakfast
Bar
Beverage
Center
Compu
Defrost
Fish/
seafood
Super
Defrost
Sensor
reheat
Kitchen
Timer
Baked
Potatoes
Popcorn
Rice
Poultry
Stop
Clear
Start
Touch On
Frozen
vegetables
Fresh
vegetables
Frozen
entrees
Custom
Help
G 8
G 9
G10
G11
G12
G13
G14
G 7 G 6 G 5 G 4 G 3 G 2 G 1
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