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Schematic Diagram - Kenwood VGS-1 Service Manual

Voice guide & storage unit
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A
VGS-1
1
ACCESSORY UNIT (X42-3250-60) : VGS-1
DGND
CP4 47k
2
1
VCC1
BUSY
2
CS7/TMO0/TP8/PB0
PLAY
3
CS6/TMIO1/TP9/PB1
4
CS5/TMO2/TP10/PB2
5
CS4/TMIO3/TP11/PB3
AFM
6
TP12/PB4
7
TP13/PB5
8
TP14/PB6
9
TP15/PB7
FWE
10
RESo
11
VSS1
12
TXD0/P90
TXD1
13
TXD1/P91
14
RXD0/P92
RXD1
15
3
RXD1/P93
16
IRQ4/SCK0/P94
17
SCK1
IRQ5/SCK1/P95
18
RV1
P40
RV2
19
P41
RV3
20
P42
RV4
21
P43
22
VSS2
23
P44
USEL
24
P45
SELF
25
P46
R92
0
4
DGND
5
6
7
6
X42-325 1/2
B

SCHEMATIC DIAGRAM

IC2
D33024D10XWV
MCU
3D
IC1
S-80930CNNB-G
1
4
RESET
VSS
oUT
2
3
VDD
CD
RESET
DGND
C
R24
3D
1k
RYBY
C7
100p
R16
R23
3A
C8
10
0
1u
75
MD2
MD2
74
MD1
MD1
D10
73
MD0
MD0
D15
72
LWR/P66
/CS1
71
HWR/P65
70
RD/P64
69
AS/P63
68
3D
VCC3
67
XTAL
XTAL
66
EXTAL
A16
EXTAL
65
A15
VSS5
64
NMI
D11
NMI
63
A9
RES
A10
62
/STBY
STBY
A11
61
PHAI/P67
A12
60
BACK/P62
59
/BREQ
A13
BREQ/P61
58
/WAIT
A14
WAIT/P60
57
VSS4
56
A19
A19/P53
55
A18
A18/P52
54
A17
A17/P51
53
A16
A16/P50
52
A15
A15/P27
51
A14
A14/
P26
DGND
ATT1
ATT2
ATT3
CP6
47k
ATT4
/BREQ
/WAIT
CP8 47k
DA0
NMI
/STBY
AFM
CP7 47k
AN0
R12
EXTAL
100k
XTAL
PA1
DGND
5C
D901, 902
REVERSE CURRENT
PREVENTION
D902
1SS400
R901
4.7k
Q2
2SK1824-A
BEAT SHIFT SW
D
R27
0
G4
A16
G5
A15
G6
DQ3
H1
A9
H2
IC3
A10
H3
SRAM
A11
H4
A12
H5
A13
H6
A14
5C
3C
CP10 47k
CP9 47k
C51
1u
R56
R58
22k
22k
R51
R53
IC51
TC75W51FUF
22k
22k
1
oUTA
VDD
2
IN-A
oUTB
3
X1
IN+A
IN-B
L77-1950-05
4
11.0592MHz
VSS
IN+B
C10 3p
LPF
Q1
REF
DTC114YE
R54
4.7k
Q1
SW : 3V→5V
LEVEL SHIFTING
E
D6
VCC1
D1
VSS1
C6
DQ1
C4
A5
C3
NC2
C1
DQ5
B6
DQ0
B5
A7
B4
A4
R64
10k
8
7
6
R88
1M
5
Q51
2SK1824-A
AUDIO MUTE SW

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