17
R - 5 3 0 E K
R - 530EW
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.
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) Close the door, touch the Defrost Center pad and touch the number pad 5. And touch the number
pad 5 again. And then touch the Start pad.
(3) The oven is in Defrost Center cooking condition.
(4) The oven will operate as follows.
L
COMPU DEFROST TEST
G 1
G 2
G 3
G 4
G 5
G 6
G 7
G 8
G 9
G10
G11
G12
G13
G14
Fresh
vegetables
Beverage
Center
Breakfast
Lunch
Popcorn
Snacks
From the
Pantry
Start
Touch On
Fish
Seafood
Power
Level
Keep
Warm
Plus
15
Minute
Recipes
Defrost
Center
Custom
Help
Baked
potatoes
Sensor
reheat
Minute
Plus
Vegetables
Rice
1
6
2
7
3
8
4
9
5
0
Poultry
Ground
meat
Entrees
Timer
Clock
Stop
Clear
