Kenwood KDC-3023R, Service Manual

Page: 15 / 30

F G H I J
1
2
3
4
5
6
7
0.17V 3.81V 4.90V 2.47V
1.44V 3.38V 2.50V 4.16V 0V 3.94V 0V 0V 0V
3.06V 2.50V 2.50V
2.50V
2.50V 2.50V
2.69V 2.69V 2.69V
0.95pp
0.91pp
2.50V
2.35V
2.35V
2.40V 2.35V 2.35V 2.45V
4.90V
0V
7.80V 3.50V 3.90V 3.84V 3.84V
3.81V 3.81V 3.60V 3.60V 7.80V
0V 0V
0V 2.35V 2.35V 2.35V 2.35V 2.35V 7.80V
2.35V
4.80V
4.80V
2.45V
0V
0.87pp
1.25V
1.70V
0V
0-4.8V
0V
2.40V
4.90V 2.50V 0V 4.80V 2.40V
2.40V
2.40V 2.45V
0V 0V
0.15V
0V
4.80V
2.40V
2.40V
4.80V
2.50V
2.00V
0V
0V
0.17V
2.69V
2.69V
2.69V
2.69V
2.50V
2.50V
3.84V
3.81V
3.81V
3.84V
IC3
C2
IC1
DTA143XUA : Q4
D1
D3
D2
Q6
Q5
DA204U
MA8051-L
DAN202U
2SA1576A
2SC4081
:
:
:
:
:
Q3
Q2
Q1
IC3
IC2
IC1
DTC124EUA or
MN6627771KP
2SA1362(Y)
MCH6101
BA5824FP
AN22002AA
:
:
:
:
:
:
Q6 Q5
D3
D1
CN1
Q1
M
M
LOADING & SLED
MOTOR
SPINDLE
MOTOR
DM2 (X92- )
DM1 (X92- )
S.GND
S.7.5V
SPDL
FCS
TRK SLED
D.GND
D.5V
Vref
GND LINE
SIGNAL LINE
B LINE
to PICKUP
APC
VREF
BUFFER
4CH BTL
DRIVER
-COM
L PROCESSOR
RF AMPLIFIER
ADAPTED FOR CD-RW
UN5212
1K
92
4
CNT
LDIN
OUTSL
INSL-
INSL+
OUT3
IN3-
PREVCC
IN2- BIAS
1
2 6
IN1- IN1+ OUT2
4
3 5
MUTE PREGND OUT1
7
8
C49
1500P
C38
0.01
R48
10K
18K 10K
R34 R33
2.2K
R47
C51
1500P
R71
13K
27 28 26 25
C37
0.01
R51
10K
R50
3.9K
R31 27K
10K
R32
V
O3+
V
O3-
V
O4+
V
O4-
PO
W VCC2
PO
W GND2
V
O2-
VCC1 GND1
11
10 12
V
O1+
V
O1-
14 13
V
O2+
22 23 21 19 20 18 17
VREF
GND
R45
10K
R43
TRD FOD D
VDD2
LDCNT CD-R
W
LO/EJ M
OTO
R
P-ON MCNT XSEL
73
71
72
74
76 75 78
77
79 80
TRCRS
28
A
VDD2
A
VSS1
OUTR
A
VDD1
27 25 26
TE FE
23 24 22
12
FBAL
TVD
SPL
PC
PWM
TBAL
1
2
3
4
5
NRFDET
OFT
BDO
LDON
DSLB
DVDD1
9
6
7
8
10
11
PLLF2
DVSS1
AVSS2
DSLF
ARF
RFSW
PLLF
13
14
15
16
17
18
IREF
RFENV
21
19
20
C48
6800P
C50
6800P
1000P
R38
220K
C31
0.1
C40
0.015
C41
C39 0.01
39K
R35
R53
4.7K
10K R36
C10
0.033
R9
3.9K
4700P
C14
C15
2200P
B/TE
17
R41
47K
C3
1
16
FCS-
TRK-
TRK+
FCS+
GND
C+D
GND
VCC
TBAL FBAL GCTL FEOUT FEN TEN TEOUT TEBPF VDET
C52
0.1
R52
4.7K
B
GCTL
6.2K R37
24
VDET
C13
270P
R8
27K
19 18 20 22
21
23
C16
330P
R11
33K
27 25 26
F E
28
D
30 29 32
C
31
A
R15
4.7K
IOP- IOP+
R4
10
R1
91
12
16
15
14
13
A 9
11
10
F
B
8
7
6
E
PD
5
4
3
VR
LD
2
1
VC
C6
39P
VCC
9
COFTR
OFTR
NRFDET
14 15 13
3T
OUT
CBDO
BDO
11 12 10 6
CA
GC
ARF CEA
8 7
RFN
RFOUT
RFIN
5 3 4
C12
3300P
C11
6800P
PD
LD
1 2
C7
0.1
3.3K
R6
RF
R5
3.3K
C1
10u6.3
R14
100K
C2
2.2
17
18
12
11
SPDL-
SPDL+
X32-5380-00
X32-5380-01
S4
YES
NO
27
A/TE
TRCRS
FE
C45 0.1
C44 1000P
C43 2200P
R39 100K
820
R40
0.047
C42
RFENV
BDO OFT
NRFDET
9
7
8
4.7Kx4
CP4
1.8Kx4
CP3
16
TRK OUT
TRK IN
13
14
FCS UP
FCS DOWN
15
16
SLED IN
/EJECT
/LOAD
SLED OUT
11
12
17 18
5 4
1
80
1
2
79 80
27K R46 39K R49
8 7 9
R7 3.6K
2P
C5
ARF
1
C8
4700P
C9
R13
240K
C18 0.1 C17 0.1
R3 5.6K R2 5.6K
6
5
4
F E B
CD
A
6 5
100K
R10
F
A
B
E
CD
23 22 24
24 23 22
4
79
2
13
15
14
16
2.2
C61
Q5,6
IC1
15
29 30
R12
910K
PO
W
PO
W
+
CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list).
Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measurements shall be
carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
• DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual
instruments or/and units.
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