KDC-3028/328
22
K
L
M
N
O
X34-3390-1x (3/4)
∗
D260
R
Q352
∗
WH1
Q351
L
REAR
Q330
J6
LX BUS
J2
D256
D258
D254
D252
Q252
D259
D402
LED & VFD+B
Q51
Q52
D55
Q53
D54
D81
D73
D52
D261
D53
SERGE
DET
DET
ACC
D255
D253
D251
D257
MUTE
LINE
D72
BU DET
D305
D302
D306
D301
D74
D75
∗
B
∗
B
∗
E
SYSTEM u-COM
RESET
POWER IC
Lch
SW
PRE OUT
MUTE
SW
Rch
MUTE
PRE OUT
Q351/352
MUTE DRIVER
IC4
SW
STBY
S-METER
ER UNIT (X32- )
DET
S151
PANEL
CN91
X89-269-
∗
R256
R336
30K
30K
C331
10u16
R331
270
TP338
TP340
TP339
MUTE
1
GND
FL
VDD
4
3
2
FR
5
R339
100 R335
∗
C333
∗
C334
TP306
TP304
TP301
10u16
C332
R332
270
R304 4.7K
R303 100
TP303
TP302
R338
100
TP307
Lch
12
R
30
7 4.7K
C303
47u10
4.7
C302
0.47
10
CON
REQ M
GND
B.
U
.
Rch
A GND
4
8
0.47
C301
10
RST
11
10
2
3
6
7
1
5
13
9
TP308
TP312
∗
W252
∗
W251
C3 0.22u50
R252
47K
R273
470K
R272 10K
R271
100
C256
1u50
∗
C255
∗
R251
C258 1u50
C4 0.22u50
C6 0.22u50
C5 0.22u50
∗
R255
12
11
OFFDET
OUT1+
OUT2+
OUT2-
OUT1-
FR-
FL-
FL+
FR+
6
4
2
10
8
9
5
3
1
7
T
AB1
PWGND1
PWGND2
STBY
VCC1
OUT4+
OUT3-
OUT4-
SGND
OUT3+
24
RL+
RL-
RR+
18
16
14
IN3
IN1
22
20
RR-
26
HSD
23
21
19
17
15
13
SVR
IN2
IN4
VCC2
PWGND3
A
CGND
27
25
T
AB2
PWGND4
MUTE
SER
V
O+B
2
CD
MUTE
L
4
DGND
CD LOE LIM
SW
CD MST
OP
CD MRST
11
13
B
U5V
9
CD MO
T
O
R
CD LOEJ
D5V
5
D5V
DGND
7
3
8
12
10
TP362
6
4
TP365
TP364
TP363
TP367
TP366
R356 1K
R355 1K
SER
V
O
1
TP369
TP371
TP374
TP373
TP372
∗
R470
TP432
∗
R450 470
∗
R451 470
∗
R452 470
TP406
TP405
TP407
CD LOS SW
54
53
52
51
CD DISC12 SW
CD MRST
CD SCL
60
59
58
57
56
55
RESET
PANEL DET
KEY REQ
RDS CLK
OEM DISP D
A
T
A
OEM DISP CLK
OEM DISP CE
CD SD
A
EJECT ILLUMI
61
PON FL
REMOTE
62
63
64
C411
R441
47K
2.2K
100K
∗
R480
R96
27K
R100
2.7K
C97
22u16
OUT
VCC
R97
3.3K
NC
GND
5
C96
0.47u50
4
2
R81
10K
DC ERR
LINE MUTE
RO
T
A
R
Y
C
W
A
VSS
TUN TYPE1
TUN TYPE2
A
VREF1
VFD D
A
T
A
F
VFD D
A
T
A
S
VFD CLK
XT1
LX REQ S
X2
VSS0
VDD1
65
66
67
68
X1
TEST
XT2
69
70
71
72
RDS NOISE
TUN SMETER
TYPE 2
VDD0
AVDD
TYPE 3
73
74
75
76
TYPE 1
77
78
79
80
10
7
8
9
R433
2.2K
4
5
6
1
2
3
R440
47K
W365
10K
10.0MHz
X1
18P
C422
R457
∗
R412
22P
22K
∗
R414
22K
∗
R416
22K
C420
1000P
∗
R411
∗
R471
22K
∗
R413
22K
∗
R415
22K
10K
TP411
22K
R417
22K
R418
L61
4.7uH
C409
47u6.3
C410
0.01
TP408
R53
100K
0.01
R57 22K
R55
10K
R54
20K
C55
R60
10K
TP404
C81
0.01
22K
R61
22K
TH1
R253
4.3K
R254 10
TP316
∗
R257
R52
39K
∗
W368
C257
1u50
R51
68K
R58 3.3K
1/2W
R59
33K
TP315
45
46
51
53
52
51
55
54
1
4
3
NC
VDD
2
VSS
OUT
65
63
60
79
64
X2
32.768KHz
C408
C407
100P
0.22
1
1
80
9
10
8
3
10K
R56
RL
FR
FL
RR
∗
W346
3
29
15
27
24
23
G
R
L
R301
R302
R306
+5V
680P
680P
TP344
TP343
TP342
TP341
RL
RR
FL
FR
7
36
35
SW
CD DISC8
GND
2
2
P-ANT
P-CON
PHONE
+5V
+B
43
+5V
C565
∗
W51
ACC
BU
Q351
Q352
4.7K
R73
4.7K
R72
R82
62
47K
R83
∗
W57
∗
W377
W312
Q330
+
+
+
+
+
+
+
+
+
+
∗
IC4
IC8
∗
IC1
a
4.7K
4.7K
22K
22K
0V
3.4V
0.4V
1.6V
4V
0V
5V
0V
5V
0V
5V
0V
0V
5V
5V
0V
0V
0V
0V
0V
5V
0V
5V
0V
5V
5V
0V
0V
5V
0V
5.0V
0V
5.0V
5.0V
0V
5V
4.0V
0V
0V or 5V
0V
5V
5V
0V
6.8V
0V
4.5V
0V
0V
14.4V
0V
6.8V
6.8V
0V
5.0V
0V
0V or 5V
0V or 5V
6.9V
14.4V
11.4V
0V
5.0V
5V
0V
1.4V
14.4V
7.0V
6.8V
0V
6.8V
6.9V
7.0V
4.8V
6.9V
0V
14.4V
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TEL 13942296513 QQ 376315150 892498299