Viking VMOC205BK Service Manual page 13

IMPORTANT:
During sensor cooking operation, the fire sensing op-
eration sequence will not begin until the AH sensor has
detected vapors and initiated a sensor cooking cycle.
This is because the operation of the convection fan
would interfere with the AH sensor's vapor detection.
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. CLOCK APPEARS ON DISPLAY.
Figure O-1. Oven Schematic-OFF Condition
NOISE FILTER
OL
117V
60Hz
THIRD DOOR
SWITCH
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3. "START" PAD TOUCHED.
Figure O-2. Oven Schematic-Microwave Cooking Condition
NOISE FILTER
OL
117V
60Hz
THIRD DOOR
SWITCH
SCHEMATIC DIAGRAM
CONV. MAGNETRON OVEN
THERMAL THERMAL THERMAL
CUT-OUT CUT-OUT CUT-OUT
A1
TTM CM
A-7
FM DM
A-9
CONTROL UNIT
E-1 E-2
DOOR
THER-
SENSING
MISTOR
SWITCH
SCHEMATIC
CONV. MAGNETRON OVEN
THERMAL THERMAL THERMAL
CUT-OUT CUT-OUT CUT-OUT
A1
TTM CM
A-7
FM DM
A-9
CONTROL UNIT
E-1 E-2
DOOR
SENSING
SWITCH
CONVECTION
MOTOR ON
OFF
THERMISTOR
ON
OFF
ON
Sensing
Voltage
OFF
COM.
(RY1)
A3 A5
RY2
SECONDARY
INTERLOCK
RY3
RERAY
F-3 F-2 F-1
E-3 E-4 E-5 E-6
DAMPER
AH SENSOR
SWITCH
COM.
A3 (RY1)
A5
RY2
SECONDARY
INTERLOCK
RY3
RERAY
F-3 F-2 F-1
E-3 E-4 E-5 E-6
THER-
DAMPER
AH SENSOR
MISTOR SWITCH
13
Rev 1 (May 2011)
0 2 3 24 30 32 (sec.)
6 sec.
3 sec.
Sensing the voltage across temperature measurement circuit.
N.O.
(RY1)
POWER
TRANSFORMER
COM.
(RY3)
COM.
(RY2)
N.O.
(RY2)
CAPACITOR
0.94µ
N.O.
(RY3)
N.O.
(RY1)
POWER
TRANSFORMER
COM.
(RY3)
COM.
(RY2)
N.O.
(RY2)
CAPACITOR
0.94µ
N.O.
(RY3)
64 (sec.)