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Kenwood KDC-BT645U Service Manual page 31

20hz-20khz
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AJ
3
ZDET
1
DRVMUTE
TP95
B3.3V
0V
V
IC1
MECHANISM u-COM
0V
3.3V
0V
71
6
IPOD RST
AGND
BU5V
2
5.0V
3.3V
LEVEL SHIFT
R81
20
19
100
13
R96
7
22K
TP118
SOC RST
AK
8
Q5
B3.3V
B3.3V
CD REQ
TP93
TP94
OUTPUT
B3.3V
3.3V
0V
0V
DSP RST
3.3V
1.5V
DVCC1A
RVOUT2
3.3V
RVIN2
1.5V
RVOUT1
DVCC1B
DVCC3B
BSIF ST REQ
0V
3.3V
REQ S
MSTOP
0V
TP98
ROM DET
3.3V
10
BU3.3V
B3.3V-2
B3.3V
DATA SYS
TP116
7
SOC STOP
TP115
2
IC6
IC7
4.5V
1
0V
2
R82
3.3V
3
3
100
TP117
REQ SYS
1
AL
3
1
B3.3V-2
R31
Q5
0
R30
Q6
CONTROL
SIGNAL
22K
INVERTER
Q6
25
TP92
NC
PWE
R28 1K
24
3.3V
24
R27 100
23
CE
23
22
NC
21
NC
20
NC
19
NC
18
C30
NC
0.01
17
0V
DVSS
16
15
14
R26
2.2
13
RVIN1
12
11
C24 0.01
10
0V
DVSS
9
3.3V
PWE
X2
C23 18P
32.768
kHz
R25
100K
8
XT2
C22
22P
7
1.2V
XT1
6
3.3V
R24 100
5
0V
5
4
R23 22K
NC
3
4
3
3.3V
2
2
R21
1
3.2V
MRST
1
1K
7
TP91
RESET
BU3.3V
10
AGND
BU5V
7
R1
4.7
B.U1.5V/
5
BU3.3V
EN1
VIN
REGULATOR
4.5V
BU1.5V
VSS
TP83
1.5V
4
VOUT1
VOUT2
BU1.5V
AM
KDC-BT40U/BT645U
KDC-U546BT
ZDET
ZDET
AGND
0V
41
DVSS3R
1.7V
42
R
RO
R112 4.7
43
DVDD3R
1
R113 4.7
44
DVDD3L
45
L
LO
TP80
DVDD3
46
DVSS3L
47
XVSS3
X3
16.934MHz
48
XI
R116
680
49
XO
3.3V
50
XVDD3
1.5V
51
VDD1-2
8
52
VSS2
53
28
CD REQ
TP69
BS REQ
54
5
BSIF ST REQ
TP70
BS GATE
55
R117
94
BSIF GATE
10K
56
PIO3
TP71
BS DATA
57
93
BSIF DATA
TP72
BS BCK
58
92
BSIF BCK
TP73
BS LRCK
59
71
BSIF LRCK
60
PIO7
4
C77
TP86
0.1
DGND
D1.5V
4
A3.3V
B3.3V-2
Q3
D1.5V
OUTPUT
BU1.5V
Q3
R2
A3.3V
4.7
REGULATOR
IC9
PON
TP81
4.5V
1
5
VIN
VOUT
3.3V
0V
2
VSS
R3
2K
2.6V
3
4
CE
NC
AGND
X32-6260-01 (2/3)
AN
D1.5V
ZDET
TP68
0V
0V
3.3V
1.7V
0V
0V
3.2V
0V
R177
2.2
4
IPOD RST
R66
3.3K
R65
NOT
3.3K
UESD
BU1.5V
D1.5V
C114
C3
TP102
0.47
0.01
D3.3V
A3.3V
31

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