18
R-930AK
R-930AW
T
COMPU DEFROST TEST
(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 twice and touch the Number pad "5". And then touch
the "START" pad.
(3) After 2 sec. Now the oven is in COMPU 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
0.5lbs
70%
47sec.
0%
52sec.
50%
32sec.
30%
40sec.
(5) If improper operation is indicated, the control unit is probably defective and should be checked.
S
RELAY TEST
Remove the outer case and check voltage between Pin Nos. 7 and 9 of the 9- pin connector (A) on the
control unit an A.C. voltmeter. The meter should indicate 120 volts, if not check the oven circuitry.
Shut-off, Cook and Heater 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 or convection
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. 19.0V D.C.
Oven lamp / Turntable motor
RY2(COOK)
Approx. 18.0V D.C.
Power transformer
RY3(HEATER)
Approx. 18.0V D.C.
Heating element
RY4
Approx. 19.0V D.C.
Damper motor
RY5
Approx. 19.0V D.C.
Convection motor
RY6
Approx. 19.0V D.C.
Cooling fan motor
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
If the control unit responds by clearing with a beep the key unit is faulty and must be replaced. If the control
unit does not respond, it is a faulty and must be replaced. If a specific pad does not respond, the above
method may be used (after clearing the control unit) to determine if the control unit or key pad is at fault.
G 1
G 2
G 3
G 4
G 5
G 6
G 7
G 8
G 9
G10
G11
G12
STOP
CLEAR
SENSOR
REHEAT
LOW MIX
BAKE
SLOW
COOK
CUSTOM
HELP
KITCHEN
TIMER
POWER
LEVEL
CLOCK
MINUTE
PLUS
COMPU
DEFROST
COMPU
BROIL
COMPU
ROAST
COMPU
BAKE
BROIL
SENSOR
COOK
POPCORN
350˚F
375˚C
400˚F
425˚F
450˚F
6
7
8
9
0
100˚F
150˚F
275˚F
300˚F
325˚F
1
2
3
4
5
CONVEC
PREHEAT
START
TOUCH ON
HIGH MIX
ROAST
o protect the electronic circuits, this model is provided with a fine foil pattern added to the primary on
the PWB, this foil pattern acts as a fuse. If the foil pattern is open, follow the troubleshooting guide
given below for repair.
U
PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD
(PWB) IS OPEN.
