Kenwood VGS-1 Service Manual page 7

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
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