Electrolux E30MO65GSSA Service Manual page 22

E30MO65GSSA
PROCEDURE
LETTER
Q KEY UNIT TEST
If the display fails to clear when the STOP/CLEAR pad is depressed, fi rst verify the fl at ribbon cable
is making good contact, verify that the door sensing switch (stop switch) operates properly; that is the
contacts are closed when the door is closed and open when the door is open. If the door sensing switch
(stop switch) is good, disconnect the fl at ribbon cable that connects the key unit to the control unit and
make sure the door sensing switch is closed (either close the door or short the door sensing switch
connecter). Use the key unit matrix indicated on the control panel schematic and place a jumper wire
between the pins that correspond to the STOP/CLEAR pad making momentary contact.
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 specifi c 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.
R 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 20 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 convec-
tion 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
RELAY SYMBOL
RY
RY2(COOK)
RY3(HEATER)
RY4
RY5
RY6
S COMPU DEFROST TEST
() 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
0.5lbs
(5) If improper operation is indicated, the control unit is probably defective and should be checked.
TEST PROCEDURES
G 5 G 6 G 7
ADD A SENSOR
DEFROST
G 4
COOK
MINUTE
CONVEC CONVEC
G 3 G 3
POPCORN PREHEAT
BAKE
REHEAT SLOW LOW MIX
G 2
COOK BAKE
HELP
G 1
KEY UNIT
unit is defective.
OPERATIONAL VOLTAGE
Approx. 9.0V D.C.
Approx. 8.0V D.C.
Approx. 8.0V D.C.
Approx. 9.0V D.C.
Approx. 9.0V D.C.
Approx. 9.0V D.C.
ST STAGE 2ND STAGE
LEVEL TIME LEVEL
70% 47sec. 0%
22
COMPONENT TEST
G 8 G 9 G10 G11
AUTO
AUTO
AUTO
BROIL
BAKE
ROAST
BROIL
1 2 3
100˚F 150˚F 275˚F 300˚F
6 7 8
350˚F 375˚F 400˚F 425˚F
START
POWER
TIMER CLOCK
TOUCH ON
LEVEL
CONNECTED COMPONENTS
Oven lamp / Turntable motor
Power transformer
Heating element
Damper motor
Convection motor
Cooling fan motor
3RD STAGE
TIME LEVEL TIME
52sec. 50% 32sec.
G12
HIGH MIX
ROAST
4 5
325˚F
9 0
450˚F
STOP
CLEAR
4TH STAGE
LEVEL TIME
30% 40sec.