Service manual

22
R-320HK
R-320HQ
R-320HW
33 P27 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47 and
AN3 terminal while one of G8 line keys on key matrix is touched.
34 P26 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47 and
AN3 terminal while one of G7 line keys on key matrix is touched.
35 P25 OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47 and
AN3 terminal while one of G6 line keys on key matrix is touched.
36 P24 OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47 and
AN3 terminal while one of G5 line keys on key matrix is touched.
37 P23 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47 and
AN3 terminal while one of G4 line keys on key matrix is touched.
38 P22 OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47 and
AN3 terminal while one of G3 line keys on key matrix is touched.
39 P21 OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47 and
AN3 terminal while one of G2 line keys on key matrix is touched.
40 P20 OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47 and
AN3 terminal while one of G1 line keys on key matrix is touched.
41 P17 OUT Back light signal. (Light emitting diodes) driving signal
42-46 P16-P12 OUT Terminal not used.
47 SEG25 OUT Terminal not used.
48-72
SEG24-SEG0 OUT Segment data signal.
Connected to LCD.
The relation between signals are as follows:
LSI signal (Pin No.) LCD (Pin No.) LSI signal (Pin No.) LCD (Pin No.)
SEG0 (72)
.................................
SEG 0 SEG13 (59)
...............................
SEG 13
SEG1 (71)
.................................
SEG 1 SEG14 (58)
...............................
SEG 14
SEG2 (70)
.................................
SEG 2 SEG15 (57)
...............................
SEG 15
SEG3 (69)
.................................
SEG 3 SEG16 (56)
...............................
SEG 16
SEG4 (68)
.................................
SEG 4 SEG17 (55)
...............................
SEG 17
SEG5 (67)
.................................
SEG 5 SEG18 (54)
...............................
SEG 18
SEG6 (66)
.................................
SEG 6 SEG19 (53)
...............................
SEG 19
SEG7 (65)
.................................
SEG 7 SEG20 (52)
...............................
SEG 20
SEG8 (64)
.................................
SEG 8 SEG21 (51)
...............................
SEG 21
SEG9 (63)
.................................
SEG 9 SEG22 (50)
...............................
SEG 22
SEG10 (62)
................................
SEG 10 SEG23 (49)
...............................
SEG 23
SEG11 (61)
................................
SEG 11 SEG24 (48)
...............................
SEG 24
SEG12 (60)
................................
SEG 12
73 VCC IN Power source voltage : GND(0V).
74 VREF IN
A/D converter power source voltage : GND(0V).
The power source voltage to drive the A/D converter. Connected to GND.
75 AVSS IN
A/D converter power source voltage : -5.0V.
The power source voltage to drive the A/D converter. Connected to VC.
76 COM3 OUT
Common data signal.
Connected to LCD signal COM0.
77 COM2 OUT
Common data signal.
Connected to LCD signal COM3.
78 COM1 OUT
Common data signal.
Connected to LCD signal COM2.
Pin No. Signal I/O Description