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Kenwood KDC-2031SA Service Manual page 23

Cd receiver
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AJ
QQ
3 7 63 1515 0
R41
47K
C45 0.1
C44 1000P
C43 2200P
20
REF
19
R40
C42
LLF2
820
0.047
18
PLLF
R39 100K
17
C41
FSW
1000P
16
ARF
15
2.45V
DSLF
14
0V
VSS2
13
VSS1
12
VDD1
R38
C40
220K
0.015
11
DSLB
4.80V
10
DON
9
BDO
9
8
OFT
8
7
FDET
7
6
FBAL
6
5
TBAL
5
4
PWM
4
CP4
4.7K
3
NC
2
SPL
2
1
TVD
1
CP3
1.8K
TE
L 13942296513
2.40V
C48
6800P
C50
4700P
R45
10K
TRK
R51
10K
C51
680P
IC3
4ch BTL
DRIVER
2.35V
C49
1500P
FCS
R47
www
2.2K
R48
79
10K
R33
SPDL
18K
2
.
AK
C3
1
RF
AMP
IC1
2.50V
VDET
R8
R11
27K
33K
2.50V
B/TE
R10
C13
C16
100K
270P
330P
C14
R35
4700P
39K
D3
R53
R52
D.5V
4.7K
4.7K
Q6
Q5
Q5,6
CURRENT
AMP
D.GND
SLED
R32
10K
TRK IN
C37
0.01
TRK OUT
FCS UP
C38
0.01
FCS DOWN
R34
C61
10K
2.2
x
ao
y
S.7.5V
S7V
i
S.GND
AL
8
ARF
C2
2.2
IOP+
R7 3.6K
RF
C7
R6
0.1
3.3K
C5
2P
0.95pp
0.95pp
0.91pp
4
VREF
Q Q
3
6 7
1 3
D5V
17
16
(X92- )
SLED OUT
/LOAD
DM2
M
19
18
LOADING &
SLED IN
SLED
/EJECT
MOTOR
15
SPDL-
DM1
14
M
12
13
u163
SPINDLE
SPDL+
MOTOR
.
AM
KDC-2031SA/2031SAY
KDC-2031SG/2031SGY
2 9
9 4
2 8
CAUTION : For continued safety,
replace safety critical compo-
nents only with manufacturer's
R4
IOP-
10
recommended parts (refer to
parts list).
APC
Indicates safety critical com-
Q1
ponents. To reduce the risk of
electric shock, leakage-current
or resistance measurements
shall be carried out (exposed
parts are acceptably insulated
D1
from the supply circuit) before
the appliance is returned to the
customer.
R15
• DC voltages are as measured
4.7K
with a high impedance volt-
meter. Values may vary
slightly due to variations be-
tween individual instruments
or/and units.
2.00V
CN1
4.80V
1
VCC
2.50V
2
VC
0V
3
GND
R1
4
LD
91
0V
5
VR
0.17V
6
PD
2.69V
CD
7
C+D
2.50V
E
8
E
1 5
0 5
8
2 9
9 4
2.69V
A
9
A
2.69V
B
10
B
2.69V
F
11
F
0V
12
GND
3.84V
15
13
FCS+
3.81V
17
14
TRK+
3.81V
16
15
TRK-
3.84V
14
16
FCS-
DPU1
(X92- )
OPTICAL
PICKUP
SIGNAL LINE
GND LINE
B LINE
IC1
:
AN22002A-V
IC2
:
MN6627771KP
IC3
:
BA5824FP-F
IC4 :
NJM4580M1-ZB
Q1
:
2SB0970
Q2
:
2SA1362(Y)
m
Q3
:
DTC124EUA
Q4
:
DTA143XUA
Q5
:
2SC4081
co
Q6
:
2SA1576A
D1
:
DAN202U
D2
:
MAZS0510L
D3
:
DA204U
X32-5750-00 (2/2)
AN
9 9
1
2
3
2 8
9 9
4
5
6
7
23

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