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Kenwood VGS-1 Service Manual page 7

Voice guide & storage unit
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F
ACCESSORY UNIT (X42-3250-60) : VGS-1
RYBY
R28
3C
0
A0
D9
D11
A17
D12
A18
D14
D14
A4
A1
A8
A2
A3
A4
D9
A10
A5
A5
A14
A6
A5
B1
D13
A18
B2
D8
3C
B3
A7
B4
A4
A9
B5
A13
B6
WE
DGND
RESET
5C
3C
IC54
IC53
TC7W66FK-F
TC7W66FK-F
1 IN_oUT1
8
1
VCC
IN_oUT1
2 oUT_IN1
7
2
CoNT1
oUT_IN1
CoNT1
3 CoNT2
6
3
oUT_IN2
CoNT2
oUT_IN2
5
4
4 GND
IN_oUT2
GND
IN_oUT2
ANALOG SW
ANALOG SW
BUFFER &
FILTER AMP
IC52
TC75W51FUF
1
8
VDD
oUTA
2
7
oUTB
IN-A
3
6
IN-B
IN+A
C62
4
5
IN+B
VSS
0.1u
Note : The components marked with a dot (
G
F6
A3
BYTE
F5
A7
DQ14
F4
RY/BY
DQ12
F3
WE
DQ10
F2
A9
DQ8
F1
A13
CE
IC5
E6
A4
A16
FLASH MEMORY
E5
A17
DQ7
E4
WP/ACC
DQ5
E3
RESET
DQ2
E2
A8
DQ0
E1
A12
A0
DGND
L51
0163
IC55
TC75S51FE(F)
1
5
IN+
VDD
8
2
VSS
VCC
C67
3
7
4
IN-
oUT
0.1u
6
5
BUFFER
R75
REF
10k
AI
) are parts of layer 1.
H
SCHEMATIC DIAGRAM
/CS2
A17
D15
D13
D10
D8
A1
CP51 4.7k
RV1
RV1(I)
RV2
RV2(I)
RV3
RV3(I)
RV4
RV4(O)
CP52 4.7k
(Ver CHECK)
IC56
XC6204B332M
3
4
NC
CE
2
VSS
5
1
VOUT
VIN
3V REGULATOR
C72
R78
470p
100
C73
0.1u
BUS SW WITH
LEVEL SHIFTING
10
11
CP54 560
BUSY(O)
GND
2A1
BUSY
9
12
SO(O)
2B1
1B4
TXD1
8
13
CLK/WAIT(I)
1A4
2A2
SCK1
7
14
USEL(I)
2B2
1B3
USEL
RST(I)
6
15
CP55 560
1A3
2A3
RESET
EN(I)
5
16
2B3
1B2
EN
SI(I)
4
17
CP56 560
1A2
2A4
RXD1
3
PLAY(O)
18
2B4
1B1
PLAY
2
19
CP57 560
1A1
2oE
1
20
VCC
1oE
IC57
TC7MBD3244AFK
L54
0419
I
VGS-1
5C
R79
10
L53
5C
0163
CN1
E40-6358-05
2
1
4
3
6
5
8
7
DGND
AGND
10
9
AI
12
11
AO
14
13
5C
AGND
16
15
18
17
20
19
22
21
24
23
26
25
DGND
AO
AI
BSFT
J
1
2
3
4
5
6
7
7
X42-325 2/2

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