Kenwood KDC-208U Service Manual page 16

P
KDC-208U/248U/4051UGM/4051URM/MP148U/MP248U
KDC-U3049/U349A/U349G/U349R/U349S/U4049
13
MUTE
3.3V
R783
Q781
100K
R781
D782
330
3.3V 0V
3.3V
POWER
IC MUTE
3.3V ∗ 3.3V
Q780
10
14
R304
0
11
C313 R310
1 10
+14.4V
15
+14.4V
VDD5V
+11.5V
uCOM3.3V
R970
47K
D970
R973
20K
0V 2.7V
0.5V
Q971
Q970
D971
0V
0V
0V
BU SURGE
DET DET
C913
330u6.3
+
VDD5V
8
16
X34-69xx-xx (4/4)
Q
RCA MUTE
∗
R333 C330 R330
0 10u50 330
+
0V 0V
R349
D341
4.7K
0V 0V
0V 0V
R347
Q341
4.7K
R353 C350
0 10u50 R350
FL
+
330
R323 C320 R320
0 10u50 330
+
0V 0V
R357
D321
4.7K
0V 0V
0V 0V
R358
10 Q321
4.7K
∗
R343 C340
0 10u50 R340
FR
+
330
14
R491
14
0
L901
+14.4V
ACC IN
R901
ILL
10K
TEL
15
R777
1K
FR+
15
RR+
14
FR-
RR-
11
FL-
RL-
FL+
RL+
REMOTE OUT
D941
∗
D851
ANT
∗ ∗
D101 D100
∗ ∗
D111 D110
14
C101 R100
AUX-L
1 0
C102 R102
AUX-G
1 0
C111 R110
AUX-R
1 0
3.3V 3.3V
Q701
PAN3.3V
+11.5V
0V
92
2
93
13
9
11
87
88
L101
USB5V
L102 ∗ ∗
R903 R902
FL+B
R
LINE OUT
∗
A
R332
180
∗
J321
REAR L
REAR R
R352
180
R322
180
FRONT L
FRONT R
R342
180
∗
B
CN901
B.U.
F901
10A
(F52-0023-05)
GND
1 16 MEMORY
ILL
2 15 ACC
TEL MUTE
3 14 REMOTE/P-CON
OE REMOTE
4 13 ANTENNA
FRONT RIGHT (+)
5 12 REAR RIGHT (+)
FRONT RIGHT (-)
6 11 REAR RIGHT (-)
FRONT LEFT (-)
7 10 REAR LEFT (-)
FRONT LEFT (+)
8 9 REAR LEFT (+)
IC1 :
∗
IC80 : MFI341S2313-X
IC161 : E-TDA7718N
IC301 : TB2926CHQ
IC501 : LA6565
IC530,931 : XC6213B332NG-X
IC531,532 : XC6213B152NG-X
IC540 : JCV8022
IC701 :
∗
IC702 : XC6120N282NG-X
IC771 : R1EX24002ASAAX
IC901 : LV5680P
IC961 : BD2224G
IC981 : MP2562DS-X
CN701
1 AUX-L
D100,101,110,111
: DZ2J062/M/-X
2 AUX-R
D102,112,970,971
3 AUX-G
: DZ2J068/M/-X
4 GND D321,341,780,781,783,
891 : BAW56W
D502 : GS1J-LTP-X
D540,782,982 : RKS801KF-X
D704 : DZ2J051/M/-X
D851,852,902,941,942,981,
983 : MBRX130-TP-X
X16-
D901 : 1N5401-BPC04
CN601
5 ACC3.3V
2/2 Q321,341 : IMX9
Q540 : 2SA2188/F/-X
6 11.5V
Q701 : RT1P144C-X
A
7 REMOCON Q780,782 : RT1P241C-X
Q781 : RT1N241C-X
8 VFDINH
Q881 : RT1N141C-X
9 VOL1
Q951 : 2SA812A/5-6/-X
10 VOL2
Q952,981 : RT1N441C-X
11 VFDCLK
Q970,971 : 2SC1623A/5-6/X
12 VFDCE
13 SYSDA
14 USBGND
15 D+
16 D-
17 USB5V
18 FL+B
19 PANDAT
20 CNDET
KDC-208U/248U/4051UGM/4051URM/MP148U/MP248U/
U3049/U349A/U349G/U349R/U349S/U4049 (1/2)
S
SIGNAL LINE
GND LINE
B LINE
T
1
2
3
4
5
6
7