Sharp R-430CS Service Manual page 25

Pin No. Signal I/O
24 P25 OUT
25-26 P26-P27 OUT
27-29 P30-P32 OUT
30-34 P33-P37 OUT
35 CVCC IN
36 VSS IN
37-38 V3-V2 IN
39-40 V1-V0
41 VCC IN
42-45 OUT
COM4-COM1
46-65 OUT
SEG1-SEG20
66-79 P74-P91 OUT
80-85 OUT
SEG35-SEG40
86 OUT
P40
87 P41 IN
88 P42 IN
89 IRQ0 IN
90 AVCC IN
91 AN0 IN
92 AN1 IN
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY2). The
signals holds "L" level during microwave cooking
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.
Terminal not used.
Terminal not used.
Used for initial balancing of the bridge circuit (absolute humidity sensor).
Connected to GND.
Power source voltage: -5.0V.
The power source voltage to the LSI is input to VSS terminal. Connected to VC
Terminal not used.
Power source voltage input terminal.
Standard voltage for LCD. Connected to GND.
Power source voltage: GND (0V).
The power source voltage to drive the LSI is input to VCC terminal.
Terminal not used.
Terminal not used.
Data output terminal to LCD driver IC3
Terminal not used.
Terminal not used.
Signal similar to AN10.
When either G13 line on key matrix is touched, a corresponding signal will be input into P41.
Signal similar to AN10.
When either G12 line on key matrix is touched, a corresponding signal will be input into P42.
Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
A/D converter power source voltage.
The power source voltage to drive the A/D convertor built into LSI. connected to GND.
Used for initial balancing of bridge circuit (absolute humidity sensor). This input is an
analoge input terminal from the AH sensor circuit, and connected to the A/D converter
built into the LSI.
AH sensor input.
This input is an analoge input terminal from the AH sensor circuit, and connected to the
A/D converter built into the LSI.
23
Description
OFF
P-HI
OFF
P-70
(ON and OFF times for other power level.)
R-430CS
H : GND
ON
L : -5V
OFF
H : GND
24 sec.
8 sec.
ON
L : -5V
H : GND
L : -5V
16.7 msec.