Read Sharp R-761M Service Manual online
11
761M -
Pin No.
Signal
I/O
Description
27
R11
IN
Signal similar to R03.
When either G11 line on key matrix is touched, a corresponding signal will be input
into R11.
When either G11 line on key matrix is touched, a corresponding signal will be input
into R11.
28
R12
IN
Signal similar to R03.
When either G10 line on key matrix is touched, a corresponding signal will be input
into R12.
When either G10 line on key matrix is touched, a corresponding signal will be input
into R12.
29
R13
IN
Signal similar to R03.
When either G9 line on key matrix is touched, a corresponding signal will be input
into R13.
When either G9 line on key matrix is touched, a corresponding signal will be input
into R13.
30
R20
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G8 line keys on key matrix is touched.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G8 line keys on key matrix is touched.
31
R21
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G7 line keys on key matrix is touched.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G7 line keys on key matrix is touched.
32
R22
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G6 line keys on key matrix is touched.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G6 line keys on key matrix is touched.
33
R23
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G5 line keys on key matrix is touched.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G5 line keys on key matrix is touched.
34
R60
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G4 line keys on key matrix is touched.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G4 line keys on key matrix is touched.
35
R61
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G3 line keys on key matrix is touched.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G3 line keys on key matrix is touched.
36
R62
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G2 line keys on key matrix is touched.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G2 line keys on key matrix is touched.
37
R63
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G1 line keys on key matrix is touched.
Signal applied to touch-key section. A pulse signal is input to R03, R11, R12 and R13
terminal while one of G1 line keys on key matrix is touched.
38-40
R70-R72
OUT
Terminal not used.
41-43
SEG20-SEG22
OUT
Terminal not used.
44-65
SEG23-SEG44
OUT
Segment data signals.
Connected to LCD.
The relation between signals are as follows:
LSI Signal (Pin No.)
Connected to LCD.
The relation between signals are as follows:
LSI Signal (Pin No.)
LCD (Pin No.)
LSI Signal (Pin No.)
LCD (Pin No.)
SEG 23 (44) .......................... SEG 1
SEG 23 (44) .......................... SEG 1
SEG 34 (55) ....................... SEG 12
SEG 24 (45) .......................... SEG 2
SEG 35 (56) ....................... SEG 13
SEG 25 (46) .......................... SEG 3
SEG 36 (57) ....................... SEG 14
SEG 26 (47) .......................... SEG 4
SEG 37 (58) ....................... SEG 15
SEG 27 (48) .......................... SEG 5
SEG 38 (59) ....................... SEG 16
SEG 28 (49) .......................... SEG 6
SEG 39 (60) ....................... SEG 17
SEG 29 (50) .......................... SEG 7
SEG 40 (61) ....................... SEG 18
SEG 30 (51) .......................... SEG 8
SEG 41 (62) ....................... SEG 19
SEG 31 (52) .......................... SEG 9
SEG 42 (63) ....................... SEG 20
SEG 32 (53) ........................ SEG 10
SEG 43 (64) ....................... SEG 21
SEG 33 (54) ........................ SEG 11
SEG 44 (65) ....................... SEG 22
66
COM1
OUT
Common data signal: COM1.
Connected to LCD (Pin No. COM1).
Connected to LCD (Pin No. COM1).
A
B
0.12 sec.
2.4 sec.
H : GND
L : -5V
H : GND
L : -5V
26
TOB
OUT
Signal to sound buzzer (2.0kHz).
A: key touch sound.
B: Completion sound.
TOUCH CONTROL ASSEMBLY/ DESCRIPTION OF LSI
Click on the first or last page to see other R-761M service manuals if exist.