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PIN NO.
1 17
1 SIGNAL
j P40
Magnetron
high-voltage
circuit
drivinq
signal.
To turn on and off the cook relay( RY2).
In high operation,
the signals
holds "L" level during
microwave
cooking
and "H"
level while
not cooking.
In other
cooking
modes (MED HIGH, MED, MED LOW, LOW) the signal turns to
"H" level and "L" level in repetition
according
to the power level.
I I/O
/ OUT
H'GH
L
MED HIGT+z{
MEP
3"
lEr*c.
J-J-i_
ME-)
Low~lz'dpT-i_
PIN NO.
j 18
-.
1 SIGNAL
j P37
I l/O
/ IN/OUT
Data sianal
output
from
IC-3 and input
to IC-3.
PINNO.
I19
1 SIGNAL
1 P36
I l/O
1 OUT
Cooling
fan motor
driving
signal.
To turn on and off the shut-off
relay( RY6).
"L"level
during
both microwave
and convection
cooking:
"H" level otherwise
PIN NO.
1 20
1 SIGNAL
1 P35
I
I/O
1 OUT
Heating
element
driving
signal.
To turn on and off the heater relay( RY3).
"L" level during convection
cooking;
"H" level otherwise.
During
convection
cooking,
the signal
becomes
"H"
level when
the
temperature
of the oven cavity
exceeds the predetermined
tem-
perature.
PIN NO.
/ 21
1 SIGNAL
1 P34
I I/O
j OUT
Convection
motor
driving
signal.
To turn
on and off the shut-off
relay( RY5).
"L"
level during
CONVECTION;
"H" level otherwise.
PIN NO.
1 22
1 SIGNAL
1 P33
I l/O
j OUT
Oven
lamp and Turntable
motor
driving
siclnal(Square
waveform:fiOHz).
To turn
on and off the shut-off
relay( RYI ).
The
square
waveform
voltage
is delivered
to the
RYI
20 mnc.
c
driving
circuit
and
relays
(RY2,RY3,RY5)
control
7-P*
1
-
-
r
----"
circuit.
-
--
L
PIN NO.
1 23
1 SIGNAL
j P32
I I/O
/ OUT
Signal
to sound
buzzer.
0 1 WC
A:
Key touch sound.
B: Completion
sound.
c:
When the temperature
of the oven cavity reaches the preset
temperature
in the preheating
mode, or when the preheating
hold time (I 5 minutes)
is elapsed.
9
1
n
CND
C
L
15
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