Viking DMOC205SS User Manual
20
DMOC205SS
VMOC205SS
VMOC205SS
S
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 "DEFROST" pad twice and touch the Number pad "5". And then touch the
(2) Close the door, touch the "DEFROST" pad twice and touch the Number pad "5". And then touch the
"START" pad.
(3) After 2 sec. Now the oven is in DEFROST cooking condition.
(4) The oven will operate as follows.
(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.
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 120 volts, if not check the oven circuitry.
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.
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
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 display fails to clear when the STOP/CLEAR pad is depressed, first verify the flat 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 flat 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 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.
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 flat 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 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.
Q
KEY UNIT TEST
G 1
G 2
G 3
G 4
G 5
G 6
G 7
G 8
G 9
G10
G11
G12
STOP
CLEAR
REHEAT
LOW MIX
BAKE
SLOW
COOK
COOK
HELP
TIMER
POWER
LEVEL
CLOCK
ADD-A-
MINUTE
DEFROST
CONVEC
BROIL
CONVEC
ROAST
CONVEC
BAKE
BROIL
SENSOR
COOK
POPCORN
KEY UNIT
350°F
375°F
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