Sharp R-4P58 Service Manual page 10

aPesaR)
5. is
GRILL COOKING CONDITION
The oven has three grill cooking condition. They are the
TOP GRILL mode, BOTTOM HEATER mode and TOP
AND BOTTOM mode.
~ TOP GRILL MODE
In this mode, the food is cooked by the grill heating
elements (top grill). Enter the cooking time by rotating the
TIME/WEIGHT knob and select the TOP GRILL mode by
pressing the GRILL button once. When the START button
is pressed, the following operations occur:
Figure O-3(a) on page 30
. The relay RY1 + RY3 + RYS are energized.
. Thenumbers ofthe digital readout startthe count down
to zero.
. Then the grill heating elements (top), turntable motor,
oven lamp and fan motor are energized.
. Now, the food is grilled by the grill heating elements.
. Upon completion of the selected cooking time, audible
signal sounds and the contacts of relays RYi + RY3
are opened, then the grill heating elements (top),
turntable motor and oven lamp are de-energized.
6. Therelay RY5 stays closed for five (5) minutes, and the
fan motor operates.
Oo nn
on &
BOTTOM HEATER MODE
In this mode, the food is cooked by the bottom heating
element. Enter the cooking time by rotating the TIME/
WEIGHT knob and select the BOTTOM HEATER mode
by pressing the GRILL button twice. When the START
button is pressed, the following operations occur:
Figure O-3(b) on page 31
. The relay BY1 + RY4 + RY5 are energized.
. Thenumbers ofthe digital readout start the count down
to zero.
. Then the bottom heating element, turntable motor,
oven lamp and fan motor are energized.
. Now, the food is grilled by the bottom heating element.
. Upon completion of the selected cooking time, audible
signal sounds and the contacts of relays RY1 + RY4
are opened, then the bottom heating elements, turnia-
ble motor and oven lamp are de-energized.
6. Therelay RY5 stays closed for five (5) minutes, and the
fan motor operates.
TOP_ AND BOTTOM MODE
In this mode, the food is cooked by both the grill heating
elements (top grill) and bottom heating element. Enter the
cooking time by rotating the TIME/WEIGHT knob and
select the TOP AND BOTTOM
mode by pressing the
GRILL button three times. When the START button is
oo nm—-
o>
pressed, the following operations occur:
oh,
RY4 are opened, then the grill heating elements (top),
bottom heating element, turntable motor and oven
lamp are de-energized.
6. Therelay RY5 stays closed for five (5) minutes, and the
fan motor operates.
DUAL COOKING CONDITION
The oven has two dual cooking mode. One is MICRO-
WAVE AND TOP GRILL mode and other one is MICRO-
WAVE AND BOTTOM HEATER made. in both modes,
the relay RY2 operates intermittently with in a 48 seconds
time base as shown below.
Power level ON time OFF time
100% A8 sec. O sec.
70% 36 sec. 12 sec
50% 26 Sec. 22 Sec.
30% 16 sec. 32 Sec
10% 8 sec. 40 sec
Power level 0% can not be programmed in Dual Cooking
condition.
MICROWAVE AND TOP GRILL MODE
MICROWAVE power button. When the START button is
pressed, the following operations occur:
1. The relay RY1 + RY2 + RY3 + RYS5 are energized.
2. Thenumbers of the digital readout start the count down
to Zero.
3. The grill heating element (top), high voltage trans-
former, turntable motor, oven lamp and fan motor are
energized.
5. Upon completion of the selected cooking time, audible
signal sounds and the contacts of relays RY1+ RY2 +
RY3 are opened, then the grill heating element (top),
high voltage transformer, turntable motor and oven
lamp are de-energized.
3, Thebottom heating element, high voitage transformer,
turntable motor, oven lamp and fan motor are ener-
gized.
4, Now, the food is cooked by the microwave and bottom
heating element.
5. Upon completion of the selected cooking time, audible
signal sounds and the contacts of relays RY13.RY2 +
RY4 are opened, then the bottom heating elements,
high voltage transformer, turntable motor and oven
lamp are de-energized.
as
"yi
,
3
a
era