R-464 (serv.man4). Control panel, component replacement and adjustment procedure - Sharp Home Appliance Service Manual (repair manual). Page 3

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R-464(SL)
15
31
XOUT
OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of XIN.
32
VSS
IN
Power source voltage: -5.0V.
VC voltage of power source circuit input.
33
P27
OUT
Terminal not used.
34
P26
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P43-P46 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 P43-P46 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 P43-P46 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 P43-P46 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 P43-P46 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 P43-P46 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 P43-P46 terminal while one
of G1 line keys on key matrix is touched.
41-50
P17-P08
OUT
Terminal not used.
51-72
SEG21-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.)
SEG 21 (51) ................... SEG21 ( 1)
SEG 10 (62) ................... SEG10 (12)
SEG 20 (52) ................... SEG20 ( 2)
SEG   9 (63) .................... SEG 9 (13)
SEG 19 (53) ................... SEG19 ( 3)
SEG   8 (64) .................... SEG 8 (14)
SEG 18 (54) ................... SEG18 ( 4)
SEG   7 (65) .................... SEG 7 (15)
SEG 17 (55) ................... SEG17 ( 5)
SEG   6 (66) .................... SEG 6 (16)
SEG 16 (56) ................... SEG16 ( 6)
SEG   5 (67) .................... SEG 5 (17)
SEG 15 (57) ................... SEG15 ( 7)
SEG   4 (68) .................... SEG 4 (18)
SEG 14 (58) ................... SEG14 ( 8)
SEG   3 (69) .................... SEG 3 (19)
SEG 13 (59) ................... SEG13 ( 9)
SEG   2 (70) .................... SEG 2 (20)
SEG 12 (60) .................. SEG12 (10)
SEG   1 (71) .................... SEG 1 (21)
SEG 11 (61) .................. SEG11 (11)
SEG   0 (72) .................... SEG 0 (22)
73/74 VCC/VREF
IN
Connected to GND.
75
AVSS
IN
Connected to VC.
76
COM3
OUT
Terminal not used.
77
COM2
OUT
Common data signal: COM2.
Connected to LCD signal COM2.
78
COM1
OUT
Common data signal: COM1.
Connected to LCD signal COM1.
79
COM0
OUT
Common data signal: COM0.
Connected to LCD signal COM0.
80
VL3
IN
Power source voltage input terminal.
Standard voltage for LCD.
Pin No.
Signal
I/O
Description
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