Kenwood KDC-MP225 Service Manual page 22

AE
KDC-MP225,MP4026/G
KDC-W4527/G/GY/Y,W427Y
Q9,10
SW
Vref
C34
FE
Q10
56P
TE
C31
R40
R43
47P
39K
270K
1.65V
D1
D1
K 3.3V
3.3/0V IC2
RF AMP/SERVO
CD SIGNAL
0/3.3V
PROCESSOR
D1
DD1
T
ND1
C
ND2
T
DD2
D
3.3/0V
0/3.3V
3.3/0V
3.3V
0V
D
SELECTOR
(SERIAL DATA)
0/3.3V
R31
100K
R32 R23
CP12
100K 10K
100K
R33
100K
7
LRCKIB
8
VDD1
3.3/0V
3.3/0V
9 0/3.3V
STANBY
(DA) 3.3V
0
VSS1
(MP3) 0/3.3V
1
VSSL
2
(DA) 3.3V
VRAL
3
IC3 (MP3) 3.3/0V
LO
4
MP3/WMA
VDAL
(DA) 3.3V
5
DECODER
VDAR
(MP3)
6
RO
7
VRAR
8
VSSR
9
TESTP
0 (DA) 0V
TXO
1 (MP3) 0/3.3V
PO0
2
PO1
CP13
100K
22
X32-5500-00 (2/2)
AF
Q9
RF
47K
E F
47K
10K
10K
C38
6800P
0.3Vp-p
1.65V
1.0Vp-p
3.3/1.65/0V
3.3/0V
FLAG
C39 CP9
0.1 100
3.3V
IC8
5
VCC
3.3V 1
0/3.3V
B
2
A
3 4
0V
GND Y
CP16
2.2K
C37 R42
1000P 100
3.3V
64 0V
VSSX
R46
63
3.5/0V XO
62
1M
1.0/0V XI
61
R47
VDDX
100K
60 0V
CKIO
2.5V
59
VDDP
58
R49 C41
VCOI
R48 330 0.33
1.35V 57
PDO
56
330
VSSP
CP15
0/3.3V
55 100K
FI2
0V
54
TSTIN
53
PI5
52 2.5V
VDD2
0V 51
PI4
50
PI3
0V
49
PI2
CP14
100K
AG
C36
0.1
1.7Vp-p
1.65V
75
C48
RF2-
4P
74
RF-
73
1.0Vp-p
R51 C51
EQ1
3.9K 33P
72
EQ2
71 C49
1.7Vp-p
RFI ARF C18
70 3300P 0.1
ADVDD
3.3V
C54
0.01
69 1.65V
ASY
R55 C55
3.0/0.3V
10K 0.01
68
EFM
67
ADGND
66
0V
TEST0
65
TEST1
64
TEST2
63
TEST3
62
TEST4
61
C32
TESTEN
0.1
60
DGND4
CP11
4.7K
59
MD-
58
MD+
57
SD- 58
56
SD+ 56
55
TD- 54
54
3.3/0V TD+ 52
53
FD-
CP10
52
10K
FD+
51
DVDD4
3.3V
4ch BTL DRIVER
IC4
1 VCC
BIAS
R52
16K
2 TDIN-
52 FDIN-
TDIN
3
FDIN
4
SPIN+
SLIN+
R59
4.7K
5
58 SPIN-
6
SPIN
SLIN-
SLIN
7
LO/EJ
GND
0V 8
3.3V 9
MUTE CNT
10
GND GND
7.5V
11
VCC1 VCC2
12
12 SPD- SLD-
13
13 SPD+ SLD+
14
F- FO- TR-
15
F+ FO+ TR+
C42
0.1
C43
0.1
M
DM1
SPINDLE
(X92- )
MOTOR
AH
CN2
1 VCC
2 VC
3 GND
4 LD
R64 DPU1(X92- )
5 VR
240
6 PD
OPTICAL
7 C
PICKUP
86 8 E
9 A
10 B
87 11 F
12 GND
F+ 13 FCS+
T+ 14 TRK+
T- 15 TRK-
F- 16 FCS-
IC1 : 91CW12AFG-4VF6
IC2 : UPD63712GC
IC3 : TC94A20F-010
IC4 : BA5824FP-F
IC5 : NJM2880U133
IC6 : XC6219B332MR
IC7 : XC6219B252MR
IC8 : TC7SH08FU
IC9 : TAR5S33-F
Q1,4 : 2SK3018F
Q3,5 : UMD9N
Q6 : UMD12N
Q7 : DTC124EUAF
Q8 : 2SB0970
Q9,10 : DTC114YUAF
D2 : DA204UF
D3 : DAN202UF
SIGNAL LINE
GND LINE
B LINE
UNIT No. S4
X32-5500-00 NO
X32-5500-01 YES
30 7.5V
R53
12K
29
54
28
R56
12K
27
56
CAUTION : For contin-
26
ued safety, replace
25
safety critical compo-
R63
24
24
n e n t s
13K
23
R50
22 manufacturer's recom-
22
21
100
mended parts (refer to
7.5V
20
parts list).
19
19
18
Indicates safety criti-
18
17
T- cal components. To re-
16
T+
duce the risk of electric
shock, leakage-current
or resistance measure-
ments shall be carried
out (exposed parts are
acceptably insulated
from the supply circuit)
before the appliance is
returned to the cus-
tomer.
M
DM2
LOADING & SLED
• DC voltages are as
(X92- )
MOTOR
measured with a high
impedance voltmeter.
X32-5500
V a l u e s m a y v a r y
slightly due to varia-
tions between indi-
vidual instruments or/
and units.
AI
1
2
3
4
5
o n l y w i t h
6
7