Circuit Operating Description - Sanyo FXR-110GD Service Manual

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CIRCUIT OPERATING DESCRIPTION
DESCRIPTION (LC7232-8424)
L
PIN
SYMBOL
FUNCTIONAL EXPLANATION
NO
IN
OUT
1 XIN lnDut side of inverter for OSC
3
AREA3
Key return signal irmut
4 AREA2
Key return sicrnal irwut
5
AREAl
Key return signal irmut
6 DIS
Key return signal input
AMSS
7
BEEP BEEP Sifrnal outwt
10 VF
I
w
I 1 I I I 1 I
0
I
11
DIS
Key return signal input
DOLBY
12 DIS MTL
Kev return signal input
13 SDK
— SDK siqnal output
14
MUTE MUTE sifanal outrwt
& MODE 1
TAPE i FM AM
AM:hlw
I
n
1 I 1
LW
L
16
MODE 2
I I 0 1
17 STBY AMP STBY OUtDUt
18
TA MUTE TAPE MUTE
OUtDUt
19
LOUD. LOUDNESS sicmal outDut
20
LO LO
sicrnal outDut
21
DOLBY DOLBY sicrnal outDut
22
AMSS AMSS siqnal outDut
23 MOIMTL MOIMTL sicrnal outDut
24
RA MUTE
RA MUTE sicrnal outrmt
25
KS5 Kev matrix return Simal outDut 5
26 KS4 Kav matrix return sifmal outrxrt 4
27 KS3 Key matrix return Sianal outDut 3
28
KS2 Kev matrix return simal outrIut 2
29
KS1 Kev matrix return siclnal outDut 1
30
KSO Kev matrix return sianal outmt O
31
VDD
VDD 5V
32 K3
Key matrix return signal outDut 3
33
K2 Kev matrix return signal output 2
L :; ::
Kev matrix return sifrnal outrwt 1
Kev matrix return siqnal outrwt O
36 S28
LCD19
OUtDUt fOr LCD
37 S27 LCD I 8 outDut
for LCD
38
S26 LCD I 7
OUtDUt
fOr LCD
39
S25 LCD 16
outwt for LCD
40 S24 LCDI 5 outrwt for LCD
41
S23 LCD14
OUtDUt fOr LCD
42
S22 LCD13 outDut for LCD
43
S21 LCD 12 OUtDUt fOr LCD
44
S20 LCD 11 OUtDUt fOr LCD
45 S19 LCD 1() OUtDUt fOr LCD
46 S18 LCD9 OUtDUt fOr LCD
47 S17 .LCD20 OUtDUt fOr LCD
48 S16 NC
49
S15 NC
50 S14
LCD24 outDut for LCD
51 S13
LCD21 output for LCD
52
S12 NC
L 53
S1l LCD22 OUtDUt fOr LCD
PIN
SYMBOL FUNCTIONAL EXPLANATION
NO
IN OUT
54
Slo LCD23 outDut for LCD
55
S9 LCD25 outDut for LCD
56
S8 NC
57
S7 LCD8 or 26 outDut for LCD
58
S6 LCD7 OUtDUt fOr LCD
59
S5 NC
60 S4 LCD6 OUtDUt fOr LCD
61
S3 LCD5 OUtDUt fOr LCD
62
S2 LCD4 OUtDUt fOr LCD
63
S1 LCD1 outDut for LCD
64 COM2 COMMON signal 2 output for LCD
65 COMI COMMON Signal 1 OUtDUt fOr LCD
66
INT VDD 5V
67
CE
—
ChipEnable ( + 5V)
68
RES RESET
69 ADI Signal meter level inDut
70
FM IF FM IF inDut
71 AM IF —
AM IF input
72
SNS
VDD 5V
73
VDD VDD 5V
74
FM in FM OSC inDut
75 AM in AM OSC inDut
76 GND GND
77
EO1 Phase detector outrwt 1
78
E02 Phase detector outrwt 2
79 GND
80
Xout Outm.rt side of inverter for OSC
LCD SEGMENT & COMMON LINE
Pin COM1 COM2 Pin COM1
COM2
1 COM1 14 3d
3C
2 COM2 15 3a
dot
3 5f 5b 16 4f
4b
4 5e 5g
17 4e 4g
5 5d 5C 18 4d 4C
6 5a
CH 19 4a
4
7 LW
2012 f12b
I 1 !
no.26 no.20
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Ilr ~TATPAU4- 111
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