Kenwood KDC-MP925 Service Manual page 29

Cd receiver
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AT
CD PLAYER UNIT (X32-5500-00/01,5540-00/01)
1
(DA) 0V
(MP3)
0/3.3V
R69
100K
2
51
NC
52
NC
53
NC
54
NC
55
NC
56
NC
57
NC
58
NC
59
NC
60
NC
61
NC
3
0V
62
DVSS
3.3V
63
NMI
64
C10
DVCC
65
0.1
NC
66
NC
67
NC
68
NC
69
NC
70
NC
71
NC
72
NC
73
NC
74
NC
75
NC
4
BOOT
8.0V
IC9
DAC3.3V
AVR
5
R67
2.2K
CP4
10K
Q1,4
LEVEL
Q1
Q4
SHIFT
(3.3V
5.0V)
6
CP2
100
24 23
22
21
20
CN1
7
AU
Q7
47K
22K
47K
22K
LEVEL SHIFT
(3.3V
5.0V)
RESET
3.3/0V
(DA) 0V
(MP3)
0/3.3V
IC1
MECHANISM
CONTROL
MICRO PROCESSOR
3.3/0V
3.3V
3.3V
0V
3.3V
3.3V
5.0V
1
0V
2
5.0V
3
Q3,5
LEVEL SHIFT
(3.3V
5.0V)
Q5
Q3
CP3
100
C2
C1
2200P
2200P
CP1
100K
19
18
17
16
15 14
13
to MAIN UNIT
AV
Q6
Q6
LEVEL SHIFT
(3.3V
5.0V)
X2
16.000MHz
0V
3.3V
3.8/0V
2.4/0V
25
3.3V
DVCC
24
AM0
23
DSPSCLK1
11
CP5
RXD1
1K
3.3/0V
22
DSPRXD1
12
21
DSPTXD1
13
TXD1
20
20SCLK0
(DA) 3.3V
19
20RXD0
(MP3)
3.3/0V
18
20TXD0
17
3.3V
20LP
16
(DA) 3.3V
20CS
(MP3)
0/3.3V
15
CP6
NC
CP8
14
100K
1K
NC
0V
13
RZM
12
0V
LZM
(DA) 0V
R27
11
0V
(MP3)
0/3.3V
FOGUP
100K
10
20INT
10
9
NC
8
(DA) 3.3V
NC
7
0V
(MP3)
0/3.3V
20STBY
7
6
20ACK
6
5
3.3V
20RST
5
4
NC
3
3.3V
AVCC
2
0V
AVSS
1
VREFL
3.3V
BU3.3V AVR
BU2.5V AVR
IC6
IC7
R1
3.3V
10
4.5V
5
1
VIN
VOUT
VIN
VOUT
0V
2
VSS
VSS
4
4.5V
3
CE
NC
CE
4
S3
5
LOE/LIM SW
R8
39K
12
11
10
9
8
7
6
5 4 3
AW
KDC-MP925/W8027
IOP1
IOP2
R34 4.7K
R36
Q8
4.7
C28 10
R35 100K
C21
1000P
D2
R29
1K
8
R21
CP7
1K
10K
7
9
10
11
20
12
R18
C24
13
100
0.1
18
L2
17
C14
R24
16
0.1
4.7
C17
13
10
12
R25
4.7
C66
12P
X1
C67
16.898MHz
C15
0.1
18P
1.5V
2.5V
5
4
NC
C20
R9
100K
C7
1
C6
3
0V
0.01
VOUT
NB
0V
2
GND
1
3.3V
VIN
CNTL
IC5
SW3.3V
AVR
C5
0.1
2 1
X32-5540-00 (1/2)
AX
D3
TE
APC
3.3V
1
LD
0.2V
2
PD
0V
3
PN
3.3V
4
AVDD1
5
DGND1
6
RFOK
RFOK
3.3V
0V
7
INTQ
3.3V
8
RST
9
A0
10
STB
3.3/0
11
SCK
12
SO
0/3.3
13
SI
3.3V
14
DVDD1
3.3V
15
DAVDD1
1.65V
16
ROUT
0V
17
DAGND1
1.65V
18
REGC
0V
19
DAGND2
1.65V
20
LOUT
3.3V
21
DAVDD2
3.3V
22
XVDD
R38
23
XTAL
220
3.3V
24
XTAL
0V
25
XGND
CP12
100K
R68
0.1
100K
0V
17
LRCKIB
2.5V
18
VDD1
R28
10K
0V
19
7
STANBY
0V
20
VSS1
21
VSSL
22
VRAL
23
LO
24
VDAL
2.5V
25
VDAR
26
RO
27
VRAR
28
VSSR
29
0V
TESTP
30
TXO
31
PO0
32
PO1
29

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