Sharp R-7N76(B)M

R-7N76(W)M
R-7N76(B)M
22
ON
OFF
H : GND
L
During cooking
H
L
20 msec
ON
OFF
During
cooking
L
GND
H.
(Convection or dual)
DESCRIPTION OF LSI
LSI(IZA627DR)
The I/O signal of the LSI(IZA627DR) are detailed in the following table.
Pin No. Signal I/O Description
1 VCC IN Connected to GND.
2 VEE IN Anode (segment) of Fluorescent Display illumination voltage: -26V.
Vp voltage of power source circuit input.
3 AVSS IN Reference voltage input terminal.
A reference voltage applied to the A/D converter in the LSI. The reference voltage is
generally maintaned at -5V.
4 VREF IN Reference voltage input terminal.
A reference voltage applied to the A/D converter in the LSI. Connected to GND.(0V)
5 AN7 IN Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is
an analog input terminal from the AH sensor circuit, and connected to the A/D coverter
built into the LSI.
6 AN6 IN AH sensor input.
This input is an analog input terminal from the AH sensor circuit, and connected to the
A/D converter built into the LSI.
7-9 AN5-AN3 IN Heating constant compensation terminal.
10 AN2 IN Temperature measurement input: OVEN THERMISTOR.
By inputting DC voltage corresponding to the temperature detected by the thermistor,
this input is converted into temperature by the A/D converter built into the LSI.
11 AN1 IN Input signal which communicates the damper open/close information to LSI.
Damper opened; “H” level signal(0V: GND).
Damper closed; “L” level signal(-5V: VC).
12 AN0 IN Input signal which communicates the door open/close information to LSI.
Door closed; “H” level signal(0V).
Door opened; “L” level signal(-5V).
13 P55 OUT Damper motor relay driving signal.
To turn on and off shut-off relay (RY7).
14 P54 OUT Oven lamp and turntable motor driving signal. (Square Waveform : 50Hz).
To turn on and off the shut-off relay (RY1).
The square waveform voltage is delivered
to the relay (RY1) driving circuit and relays
(RY2-RY5) control circuit.
15 P53 OUT Fan motor driving signal.
To turn on and off the shut-off relay (RY6). The signal holds “L” level during cooking and
holds “H” level while not cooking.
16 P52 OUT Heating element driving signal.
To turn on and off heater relay (RY3). “L” level during
convection cooking or dual cooking; “H” level otherwise.
During convection cooking or dual cooking; the signal
becomes "H" level when the temperature of the oven cavity
exceeds the predetermined temperature.
17 P51 OUT Magnetron high-voltage circuit driving 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
(M. HIGH, MED, M.LOW, LOW) the signal
turns to “H” level and “L” level in repetition
according to the power level.
Note
DEF: Microwave cooking mode
VARI-MODE ON-TIME OFF-TIME
HIGH DEF 32sec. 0sec.
(100% power) DUAL 48sec. 0sec.
M.HIGH DEF 24sec. 8sec.
(approx. 70% power) DUAL 36sec. 12sec.
MED DEF 18sec. 14sec.
(approx. 50% power) DUAL 26sec. 22sec.
M.LOW DEF 12sec. 20sec.
(approx. 30% power) DUAL 16sec. 32sec.
LOW DEF 6sec. 26sec.
(approx. 10% power) DUAL 8sec. 40sec.