Sharp R-310AK Supplemental Service Manual page 47

Pin No. Signal I/O
21 VSS IN
22 R70 OUT
23 PULSE OUT
24 R72 OUT
25 R73 OUT
26 INT2 IN
27 R81 OUT
28 R82 OUT
29 R83 OUT
30 R90 OUT
31 R91 OUT
32 R92 OUT
33 XIN IN
34 XOUT OUT
35 RESET IN
36 HOLD IN/OUT Connected to GND.
37 VLC IN
38 COM1 OUT
39 COM2 OUT
Power source voltage: -5V
VSS voltage of power source circuit input.
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.
Signal to sound buzzer (2.0 kHz).
A: key touch sound.
B: Completion sound.
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.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R60 - R63 terminal while one
of G8 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 R60 - R63 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 R60 - R63 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 R60 - R63 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 R60 - R63 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 R60 - R63 terminal while one
of G3 line keys on key matrix is touched.
Terminal not used.
Internal clock oscillation frequency setting input.
The internal clock frequency is set by inserting the capacitor and resistor circuit with respect
to XOUT terminal.
Internal clock oscillation frequency control output.
Output to control oscillation input of XIN.
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is supplied. Temporarily set "L"
level the moment power is supplied, at this time the LSI is reset. Thereafter set at "H" level.
Signal synchronized with commercial power source frequency.
Signal similar to VSS.
Common data signal: COM1.
Connected to LCD (Pin No. 1)
Common data signal: COM2.
Connected to LCD (Pin No. 2)
21
Description
OFF
P-HI
OFF
P-70
(ON and OFF times for other power level.)
0.1 sec.
A
B
16.7 msec
R-310AK
R-330AK
R-330AW
H : GND
ON
L : -5V
OFF
H : GND
24 sec.
8 sec.
ON
L : -5V
H : GND
L: -5V
2 sec.
H : GND
L: -5V
H : GND
L : -5V
During cooking
H : GND
L : -5V
16.7 msec