Kenwood KDC-348U Service Manual page 29

F
TP93 REQ M
R610
TP94 RST
4.7K
5V TP92
IC601
5.0V 0V
CON
1 14
VCC
2 13 D611
12
3
4 11
5 10
9
6
0V
7 8 3.3V
GND
0V
3.3V
to 5V
0V
3.3V to 5V
1 1
BU3.3V
9
2
SW IC
∗
IC921
1 16 5.0V
VDD
15
2 14
13
3
0V
4
12
5
11
6
∗ ∗
R926 R925
A
INH
10
7
B
0 0 VEE
9
8
C
VSS
0V 5V
0V
13
11
5 8
12
SW3.3V
BU3.3V
4
A8V
4
D303
D304
∗
R322
100K
D302
∗
R321
C305 C306
100K
1000P 1000P
R337 R338
C308
10K 10K
0.01
R343
1K
5 13 11 9
14 12 10
X16-
2/2 J1
A
G
LX BUS
J601
1 5 9
2 6 10
13
3 7 11
4 8 12
Rch
GND
14
SWREG5V
∗
Q921
MIC SW
CONT
6
11 12
5 6 7 8
7
4
∗
R346
0
Q301
D307
D305
PAN
3.3V SW
D306
D301
D308
7 5 3 1
J301
8 6 4 2
H
1 2 3
∗
J
1
C454
2
1
3
R451 C453
47K 1
C451
4.7
Q451
Q451
SIGNAL LEVEL
CONTROL
1
2
3
1
2
3
9
2
14
3
FR
9 FL
∗
∗ L405
C418
10P ∗
R415
2
0
3
RR
RL
3
FR
FL
TU-L
TU-R
CD-L
11
CD-R
15
14
14
15
11
11 12 12
5 6 7 8
SW3.3V
BU3.3V
4 4 5
RST
S301
R218
1K
TP158
R219 47K
3.3V TP432
0V
3.3V
IC202
C204
0.1
4
1
VOUT
VIN
C205
2 3
VSS CD
1000P
0V
3.3V
0V
RESET IC
30
CN301
29
I
KDC-348U/4751SD/BT41U/BT648U
/U4549/U4549SD/U549BT/X395/X695
1 2 3
SPE-ANA AGC
IC451
5.0V
R454
1K
1 8
VCC
7
R455
2.5V
820
2.5V 2
R456
2.5V 3 6
47K 0V 4 5
2.5V
GND
R458 10K
C458 R459
2.2 10K
R460 330K
8
R461 330K
7 16
9
∗
C417
10P
∗
C411
49
LDOUT0R
50
LDOUT0L
5.6V/4.0V
51
VP 12.0V/8.5V
52
PAOUT1R
53
PAOUT1L
54
IC401
PAOUT0R
55
PAOUT0L E-VOL
3.3V
56
MUTEC 0V
57
MUTEB
58
MUTEA
59
TUNERL
60
TUNERR
61
CDL
62
CDR 3.3V
63
MDL
64
MDR
14
15
12
6 7 8
20
15
28 26 24 22 20 18 16
27 25 23 21 19 17
to CD PLAYER UNIT (X32-625x-xx)
X34-696x-xx (2/6)
J
SWREG5V
Q92,93
TP104
C412
R97
47u16
100
∗
C415
10P
16
ACOU
ACOU
MU
3.3V
0V MU
MU
3.3
REF3
VOL
VOL
REF5
S
SAO
3.3V
0V SAR
SAC
S
4.0V
3.3V
3.3V
S
S
R40
10K
16
SW3.3V
BU3.3V
4 5 6 7 8
14 12 10 8 6
15 13 11 9 7
29