Table of Contents
Advertisement
R - 2 2 0 E W
R - 2 3 0 E K
R - 2 3 0 E W
PROCEDURE
LETTER
G 7
G 8
G 9
G10
K
RELAY TEST
1. Disconnect the power supply cord and then remove outer case.
2. Open the door and blocked 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. 3 of the 2 pin connector (A) and the
common terminal of the relay RY2 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,
RELAY SYMBOL
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.
L
EXPRESS DEFROST TEST (R-220EW)
(1) Place one cup of water in the center of the turntable tray in the oven cavity.
(2) Close the door, touch the " EXPRESS DEFROST " pad once for 0.5lbs in weight.
(3) The oven is in Express Defrost cooking condition.
(4) The oven will operate as follows.
MENU
EXPRESS DEFROST
0.5lb
(5) If improper operation is indicated, the control unit is probably defective and should be checked.
COMPU DEFROST TEST (R-230EK/EW)
(1) Place one cup of water in the center of the turntable tray in the oven cavity.
(2) Close the door. Touch the " COMPU DEFROST " pad once, the Number pad "1" for selecting "Ground
Meat" and the Number pad "5" for entering 0.5lbs in weight. And then touch the "START" pad.
(3) The oven is in Compu Defrost cooking condition.
(4) The oven will operate as follows.
TEST PROCEDURES
G 6
G 5
G 4
G 3
FROZEN
REHEAT
6
2
VEGETABLES
CENTER
FRESH
3
5
4
VEGETABLES
KITCHEN
1
0
CLOCK
TIMER
FROZEN
9
8
7
ENTREES
R-220EW
OPERATIONAL VOLTAGE
RY1
Approx. -13.5V D.C.
RY2
Approx. -12.5V D.C.
1ST STAGE
LEVEL
TIME
70%
57sec.
COMPONENT TEST
G 2
G 1
G 6
MINUTE
FROZEN
PLUS
G 7
VEGETABLES
EXPRESS
POWER
FRESH
G 8
DEFROST
LEVEL
VEGETABLES
STOP
BAKED
KITCHEN
POTATOES
CLEAR
G 9
TIMER
START
FROZEN
POPCORN
G10
ENTREES
control unit is defective.
Oven lamp / Turntable motor / Cooling fan motor
Power transformer
2ND STAGE
LEVEL
TIME
LEVEL
0%
57sec.
16
G 5
G 4
G 3
G 2
REHEAT
MINUTE
6
2
CENTER
PLUS
COMPU
3
5
4
DEFROST
BAKED
0
1
CLOCK
POTATOES
9
8
7
POPCORN
R-230EK/EW
CONNECTED COMPONENTS
3RD STAGE
4TH STAGE
TIME
LEVEL
50%
32sec.
30%
G 1
POWER
LEVEL
STOP
CLEAR
START
TIME
45sec.
Advertisement
Table of Contents
