Sharp R-310AK Supplemental Service Manual page 45

Pin No. Signal I/O
28 P36 OUT
29 P37 OUT
30 VSS IN
31-33 V3-V1 IN
34 VCC IN
35 COM4 OUT
36 COM3 OUT
37 COM2 OUT
38 COM1 OUT
39-50 SEG1-SEG12 OUT
51 SEG13 OUT
52-54 OUT
SEG 14-SEG16
55 SEG17 OUT
56-62 OUT
SEG 18-SEG24
63 SEG25 OUT
64-70 P81-P87 OUT
71 P90 OUT
72-78 P91-P97 OUT
79 VCC IN
80-82 P10-P12 IN
83-87 P13-P17 OUT
88 P40 OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal while one
of G1 line keys on key matrix is touched.
Terminal not used.
Power source voltage : -5V.
VSS voltage of power source circuit input.
Power source voltage input terminal.
Standard voltage for LCD.
Connected to GND.
Common data signal: COM4.
Connected to LCD (Pin No. 1).
Common data signal: COM3.
Connected to LCD (Pin No. 2).
Common data signal: COM2.
Connected to LCD (Pin No. 3).
Common data signal: COM1.
Connected to LCD (Pin No. 4).
Terminal not used.
Segment data signal.
Connected to LCD.
The relation between signals are as follows:
LSI signal (Pin No.) LCD (Pin No.)
SEG 13 (51) ............................. 29
SEG 14 (52) ............................. 28
SEG 15 (53) ............................. 27
SEG 16 (54) ............................. 26
SEG 18 (56) ............................. 25
SEG 19 (57) ............................. 24
SEG 20 (58) ............................. 23
SEG 21 (59) ............................. 22
SEG 22 (60) ............................. 21
SEG 23 (61) ............................. 20
SEG 24 (62) ............................. 19
P81 (64) ................................... 18
P82 (65) ................................... 17
Segment data signal.
Signal similar to SEG 13.
Terminal not used.
Segment data signal.
Signal similar to SEG 13.
Terminal not used.
Segment data signal.
Signal similar to SEG 13.
Terminal not used.
Segment data signal.
Signal similar to SEG 13.
Connected to GND.
Terminal not used.
Used for initial balancing of the bridge circuit (absolute humidity sensor).
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.
19
Description
LSI signal (Pin No.)
P83 (66) ................................... 16
P84 (67) ................................... 15
P85 (68) ................................... 14
P86 (69) ................................... 13
P87 (70) ................................... 12
P91 (72) ................................... 11
P92 (73) ................................... 10
P93 (74) ..................................... 9
P94 (75) ..................................... 8
P95 (76) ..................................... 7
P96 (77) ..................................... 6
P97 (78) ..................................... 5
16.7 msec
During cooking
R-310AK
R-330AK
R-330AW
LCD (Pin No.)
H : GND
L : -5V