16
R-320BB
R-320BK
R-320BW
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 " Steaks / chops " pad once.
(3) The oven is in Compu Defrost cooking condition.
(4) The oven will operate as follows
WEIGHT
1ST STAGE
2ND STAGE
3RD STAGE
LEVEL
TIME
LEVEL
TIME
LEVEL
TIME
0.5lb
50%
40sec.
30%
37sec.
20%
42sec.
(5) If improper operation is indicated, the control unit is probably defective and should be checked.
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.
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
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
L
COMPU DEFROST TEST
5
4
3
2
1
0
9
8
7
6
STOP
CLEAR
AUTO
START
CLOCK
Chicken
breast
KITCHEN
TIMER
Frozen
Vegetables
Fresh
Vegetables
Fish /
seafood
Ground meat
Ground meat
COMPU
DEFROST
Chicken
pieces
Popcorn
Reheat
START
Rice
POWER
LEVEL
MINUTE
PLUS
Fresh
roll /
muffin
Frozen
roll /
muffin
Frozen
entrees
Baked
potato
Steaks /
chops
INSTANT
ACTION
G 8
G 9
G10
G11
G12
G 7
G 6
G 5
G 4
G 3
G 2
G 1
