Kenwood KDC-138/138CR Service Manual page 28

U
KDC-138/138CR/139/139S
CD PLAYER UNIT (X32-598x-xx)
1
2
C17
3
12EJE SW
CN2
N.C. 24 TP24
12EJE
12EJE SW 23
LOS
LOS SW 22
LOS SW
4
CP4 100
CLK
CLK 21
DATA
DATA 20
A8V 19 A8V
Lch
Lch 18
A GND
A.GND 17
Rch
Rch 16
MUTE
MUTE 15
MUTE 14 TP14
MRST
5
MRST 13
MSTOP 12
MSTOP
8EJE
8EJE SW 11
8EJE SW
DOWN&LIMIT
SWITICH
S3
6
LOE/IIM
LOE/LIM SW 10
BU5V
BU5V 9
D GND
D.GND 8
TX/BCLK
D.OUT 7
LRCK 6 LRCK
SRDATA 5 SRDATA
LO/EJ
LO/EJ 4
MOTOR
MOTOR 3
S7V
S7V 2
S GND
S.GND 1
7
28
X32-5980-04 (1/2)
V
20 118
Q3
Q3
CP1
5V-3.3V
LEVEL
SHIFT
21
116
R106
0.1 2.2
ROM
CORRECTION
IC5
(NOT USED)
1
8
A0 VCC
2 7 SCL FCLK
A1 WP CP3
3 6
A2 SCL 120
4 5
GND SDA 119
100
SDA FDATA
D.GND
3.3V
REG
IC2
S2
S1
BU3.3V
Q4
21
R24
20
100
R13 1K
L
5V-3.3V
LEVEL SHIFT
R14
1K
R
107
R27
Q8,9
125
POWER SUPPLY
R28 27K
CONTROL
Q9 Q8
S4
D1
126
4
3
W
D.GND
1.5V
ASEL
1
2
3
R23
75
4
4
3.3V 5
5
6
TE 7
8
SRVMON1
9
SRVMON0
0V 10
BU
3.3V
R37
SW
10K
3.3V 11
Q6 NPWDOWN
12
R15
10K
0V 13
C21 0.1 14
15
C84 C22 R110
1 0.1 2.2
16
R39 10K
17
18
19
20
21
22
23
24
25
5
26
27
28
29
30
31
32
7.3V
IC6
4CH BTL
DRIVER
S.7.5V
X
OCDSEL
BCLK
3.3V
LRCK
3.3V
SRDATA 0-3.2V
TX
MUTE R
MUTE L
N.C.
SRVMON1
SRVMON0
RAMSEL
ROMSEL
NPWDOWN
1.2V
DVSS3
SRAMVDD 1.5V
REGOUT
3.3V
REGVDD
3.1V
REGON2
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
69
R60 R59 R61
15K 27K 15K
C35 C36
1000P 6800P
1.7V
0V
1.6V
1.8V 3.2V
C38 C37
470P 6800P
R66 R65
15K 15K
C39
2.2
67
S.GND
Y
X1
16.934MHz
4.00pp
0V
0-3.3V
IC1
CD SIGNAL PRO
& MECHA u-CO
RF AMPLIFIER
RESPONDING t
1.5V
D.GND
3.6V
17
3.3V
16
3.7V
3.4V
15
3.4V
14