Oven Schematic - Sharp R-530EK-T Service Manual

R530EWT
AH SENSOR
3. Sensor detects moisture and humidity and calculates cooking time
and variable power.
4.1. Cooking Sequence.
1. Operate the oven in sensor cooking mode by referring to the opera-
tion manual.
NOTE: The oven should not be operated on SENSOR immediately
after plugging in the unit. Wait two minutes before cooking on
SENSOR.

[2] OVEN SCHEMATIC

1. Off Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. CLOCK APPEARS ON DISPLAY
GRN
C1
120V
AC60 Hz
NOISE
FILTER
MAGNETRON
TEMP. FUSE
A2
(RY-1)
A1
C2
CONTROL UNIT
N.O.
C3
TTM
OL
CAVITY
TEMP.
OVEN
TURN-
FUSE
LAMP
TABLE
MOTOR
SECONDARY
INTERLOCKS
WITCH
Figure O-1. Oven Schematic-Off Condition
2. The coil of shut-off relay (RY-1) is energized, the turntable motor,
oven lamp and cooling fan motor are turned on, but the power
transformer is not turned on.
3. After about 16 seconds, the cook relay (RY-2) is energized. The
power transformer is turned on, microwave energy is produced and
first stage is started. The 16 seconds is the cooling time required to
remove any vapor from the oven cavity and sensor.
NOTE: During this first stage, do not open the door or touch STOP/
CLEAR pad.
4. When the sensor detects the vapor emitted from the food, the dis-
play switches over to the remaining cooking time and the timer
counts down to zero. At this time, the door may be opened to stir,
turn, or season food.
5. When the timer reaches zero, an audible signal sounds. The shut-
off relay and cook relay are de-energized and the power trans-
former, oven lamp, etc. are turned off.
6. Opening the door or touching the STOP/CLEAR pad, the time of
day will reappear on the display and the oven will revert to an OFF
condition.
NOTE: " " indicates components with potentials above 250V
(RY-2)
PRIMARY
INTERLOCK
RELAY
COM.
B1 B2
DOOR
SENSING
SWITCH
FM
FAN
MOTOR
6 – 2
CAPACITOR
1.0mF AC 2300V
POWER
TRANSFORMER
N.C.
MONITOR
SWITCH
COM.
H.V. RECTIFIER
MAGNETRON