Kenwood KDC-138 Service Manual page 28

A
X34-56xx-xx
1
2
3
4
5
6
7
28
X34-56xx-xx (1/4)
B C
ELECTRIC UNIT (X34-5xxx-xx)
I
LX BUS
J4
9 10
5 6
1 2
TP341
G
CN4
TP344
L 1
GND 2
R 3
TP342
TP338
D
J5
L
TP340
R
TP339
J2
ANT
TUNER
UNIT
A1
26
RFGND
ANT IN
NC
AM+B
OSCGND
VT
COM+B
IFC
SDA
SCL
D-GND
VDD5V
PLLGND
SMETER
AMIFOUT
QUALITY
RDS
D-GND2
RDSMUTE
STDGND
R
L
IF+B
IFGND
25
IC1 :
IC2 :
IC4 : BD4913-V4
IC6 :
IC7 : LC72725KV
IC8 :
IC10 :
D
R606 1K
REQ S TP98
R609 100
MUTE TP95
R607 1K
DATA S TP97
R605 100
CLK TP99
DATA M TP96 R608 100
R610 4.7K
RST TP94
R601 C601
13
TP102
10 0.1
Lch
11 12
R602 C602
TP100
Rch 10 0.1
7 8
R603 C603
TP101
4.7 47u6.3
AGND
3 4
+
R612 4.7K
CON TP92
R611 100
REQ M TP93
BU TP90
BU
GND TP91
R711 R707 C705
180 330 10u35
+
Q703
Q704
R712 R708 C706
180 330 10u35
+
Q701-704
PRE-OUT
R705 R701 C701 MUTE SW
180 330 10u35
+
Q701
Q702
R958
0
R706 C702
180 R702 10u35
+
330
Q705
MUTE DRIVE
for PRE-OUT
TP65
24
TP128
23 TP551
22 TP552
BU5V
21 TP66
AM+B
20
19
TP113
18 TP68
17 TP69
R501
TP70
16 470
SDA
R502
R503
4.7K
TP71
470
15
SCL 6
R504
14
4.7K
13 TP72
AUDIO+B
12
11 TP73
84 7
10
9 TP74
83 SW5V
8 TP75
7
6
TP76
5
C510 0.1
4 TP77
C509 0.1
3 TP78
2 TP79
1
Q2,8 : KTA1046-P D1
E-TDA7719 Q3,9,101-103,402,901 D2
: 2SC4081 D3,101,102,104
Q7 :
Q10,12,705 : D4,5,109,401,404,
XC6120N362N1 Q11 :
NOT USED Q13 : D7
Q14 : D103
Q104,105 :
Q301 :
Q701-704 :
Q801 : RT1N144M
Q902,903 : 2SA1576A
E
75
72
100
2 76
1
70
ELECTRIC
DISCHARGE
1
CIRCUIT for C805
(SVR)
GND2 R613
10
CH-L
R614
10
CH-R
R615
4.7
CH-G
71
73
1
FL 3
FR
C404
1
3.3V
0V
IC2
E-VOL
3.3V
0V
6
6
: S2V60-5009F46 D105,901 : MTZJ4.7(B)
: MTZJ8.2(B) D106-108,305,306,
601-606 : MTZJ6.8(B)
: D1F60-5063 D110 : BAV70W
D301 : DA204U
801-803 : 1SS133 D303 : MTZJ6.2(B)
: MTZJ12(B) D304 :
: 1SR139-400T64
SIGNAL LINE
GND LINE
B LINE
BU
Q801
W812
2
AUDIO
5V 3.3V
0V 0.6V
B
WH
W
R