17
R -520DK
R-520DW
R -530DK
R-530DW
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
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-520DK/DW
R-530DK/DW
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. 24.0V D.C.
Oven lamp / Turntable motor / Cooling fan motor
RY2
Approx. 23.0V 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.
(2) For R-520DK/DW, close the door, touch the " STEAKS / CHOPS " pad once.
For R-530DK/DW, close the door, touch the Compu Defrost pad thtee times and touch the number
pad 5. And then touch the Start pad.
L
COMPU DEFROST TEST
5
4
3
2
1
0
9
8
7
6
START
BEVERAGE
POWER
LEVEL
CHICKEN
PIECES
FISH/
SEAFOOD
KITCHEN
TIMER
CHICKEN
BREAST
MINUTE
PLUS
STEAKS/
CHOPS
BAKED
POTATOES
POPCORN
REHEAT
SENSOR
CUSTOM
HELP
CLOCK
RICE
STOP
CLEAR
FROZEN
ENTREES
FRESH
VEGETABLES
FROZEN
VEGETABLES
FROZEN
ROLLS &
MUFFINS
FRESH
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
2
1
0
9
8
7
6
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