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R-220DW

R-230DK

R-230DW

(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.

(3) The oven is in Express Defrost cooking condition.

(4) The oven will operate as follows.

WEIGHT 1ST STAGE 2ND STAGE 3RD STAGE 4TH STAGE

LEVEL TIME LEVEL TIME LEVEL TIME LEVEL TIME

0.5lb

70% 57sec. 0% 57sec. 50% 32sec. 30% 45sec.

(5) If improper operation is indicated, the control unit is probably defective and should be checked.

COMPU DEFROST TEST (R-230DK/DW)

(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 and touch the Number pad "5". And then

touch the "START" pad.

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT 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,

control unit is defective.

RELAY SYMBOL OPERATIONAL VOLTAGE CONNECTED COMPONENTS

RY1 Approx. -13.5V D.C. Oven lamp / Turntable motor / Cooling fan motor

RY2 Approx. -12.5V 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

L EXPRESS DEFROST TEST (R-220DW)

R-220DW

R-230DK/DW

POPCORN

START

POWER

LEVEL

STOP

CLEAR

MINUTE

PLUS

BEVERAGE

FRESH

VEGETABLES

EXPRESS

DEFROST

DINNER

PLATE

BAKED

POTATO

TIMER

CLOCK

ROLL,

MUFFIN

G 6 G 5 G 4 G 3 G 2 G 1

G 7

G 8

G 9

G10