Sharp R-305HK Service Manual page 21

Pin No. Signal I/O
41 P70 OUT
42 P71 OUT
43 P72 OUT
44 AVDD IN
45-48 AIN5-AIN2 IN
49 AIN1 IN
50 AIN0 IN
51 AVSS IN
52 P11 IN
53 P10 OUT
54 P33 OUT
55 P32 OUT
56 P31 OUT
57 INTP0 IN
58 P26 OUT
59 P25 OUT
60 P24 OUT
61 P23 OUT
62 P22 OUT
Oven lamp, fan motor and turntable motor driving signal
To turn on and off shut off relay (RY1). The
square waveform voltage is delivered to the
RY1 driving circuit and RY2 control circuit.
Terminal not used.
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY2). The
signals holds "L" level during microwave cook-
ing and "H" level while not cooking. In other
cooking modes (variable cooking) the signal
turns to "H" level and "L" level in repetition
according to the power level.
A/D converter power source voltage.
The power source voltage to drive the A/D converter in the LSI. Connected to GND.
Terminal to change cooking input according to the Model.
By using the A/D converter contained in the LSI, DC voltage in accordance with the Model
in operation is applied to set up its cooking constant.
This is the terminal to detect the voltage of the signal coming from the touch key.
Signal similar to AIN1.
A/D converter power source voltage.
The power source voltage to drive the A/D converter in the LSI.
To input signal which communicates the door open/close information to LSI.
Door close "H" level signal (0V). Door open "L" level signal (-5V).
Terminal not used.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal
while one of G1 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal
while one of G2 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal
while one of G3 line keys on key matrix is touched.
Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal
while one of G4 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal
while one of G5 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal
while one of G6 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal
while one of G7 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal
while one of G8 line keys on key matrix is touched.
19
Description
16.7 msec.
During cooking
OFF
Maximum
output
OFF
70% of maximum
output
R-305HK
R-305HW
H : GND
L : -5V
H : GND
ON
L : -5V
OFF
H : GND
24 sec.
8 sec.
ON
L : -5V
H : GND
L : -5V
16.7 msec.