Kenwood KRC-597 Service Manual page 16

A
KRC-597/597Y
1
(X14-918x-xx)
J4
ANT.
∗
A1
1
RF GND
2
2
FM ANT
3
AM ANT
4
OSC GND
5
FM+B
6
AM+B
7
OSC GND
8
OSC GND
9
W/N
10
OSC GND
11
VT
12
PLL+B
13
IFC OUT
14
SDA
15
3
SCL
16
DIG GND
17
VDD5V
18
NOISE OUT
19
RDS OUT
20
AUDIO OUT
21
AMIF OUT
22
S-METER
23
IF1+B
24
IF1 GND
4
∗
E
R113
2.2K
76
R112
2.2K
77
2.5V
C116
330P
2.4V
5.0V
5
0V
∗
CN2
D
R374
2
REM.
1K
CONT
1
D165
6
P1
D162
18 17
7
16
X14-9182-71 (1/3)
B
PRE OUT
REAR
J3
C356
0.01
R355 R356
22K 22K
Q351 Q352
L3
52mH
PRE
MUTE
SW
C110 0.01
L6
4.7uH
R101
1K
5
45
R102
45
470
47
R104
470
47
L7
4.7uH C106
0.01
0V
5.0V
R106 0V
2.2K
0V
L8
4.7uH
Q101
COMPOSITE
4.7K
SIGNAL
BUFFER
5V
RDS DECODER
0V
IC7
R114
2.2K
1 16
QUAL RDCL
5V
2 0V 15
RDDA T57
C112
14
3
OSCOUT
VREF
27P
4
MPX
C113
27P
13
OSCIN
5 12 5.0V
OSEL VCC
6 11 0V
GND EXTRES
7 10
C115
ARI TM
10u16
8 9
FILOUT FSEL
+
C114
0.01
R171
D161
100K
47K
10K
Q151
D154
DSI
DRIVER
16 15 14 13 12 11 10 9
C
∗
C
FRONT
CN3
1 2 3
C357
0.01
R361 R362
22K 22K
Q355 Q356
PRE
MUTE
SW
D301
D302
Q350
E2PROM
IC10
1 8 5.0V
A0 VCC
2 7 0V
A1 TEST
3 6
A2 SCL 47
5V
4 5
0V
GND SDA 45
C211
47u10
+
C210
0.01
IC2
E.VOL &
N.C.MPX
C207
2.2u35
+
R165
47K
R166
4.7K
Q152
PANEL 5V SW
C164
10u6.3
+
C165
D163
0.01
8 7 6 5 4 3 2 1
D
J2
1 5 9
2 6 10
13
3 7 11
4 8 12
D304
D307
PRE MUTE SW
IC6
8 7
COUT 0V GND
5.0V 9 6 5.0V
CIN1 BOUT
10 5
C6
CIN2 BIN3
0.01
11 4
CIN3 BIN2
5.0V 12 3
AOUT BIN1
D403
13 2
AIN3 AIN2
1
5.0V AIN1
14
VCC
MUTING LOGIC IC
Q201
4.7K
NOISE
BUFFER
R205
5V
2.2K
2.5V
0V
5V 3.5V
0V 0V
R203
4.7K
C204
0.01
R202 C206
4.7K 150P
C163
0.22
R168
S1
1K
CN1
E
R314
100K
R313
D308 D303
100K
R315
100K
C304
0.01
2
6
2
2
2
3
3
3
4
4
4