Kenwood RXD-V252 Service Manual page 14

U V
TUNER/MAIN SECTION
+10V
AM
T303
TRACKING
3 2
C331
4 0.047
5 C332
0.022
1
6
SPARE
C330
15P
T306 C335
560P
6 2
C337
4 AM BAND
27P COVERAGE
5
SPARE
1
3
R358
3.9K
3.4V(3.6V)
2.3V
(2.0V)
2.3V(2.0V)
5.0V
+B
R309
10K
2.0V
2.0V
CF303
R316
4.7K
T351
AM IFT
4.9V (5.1V)
2.5V (0V)
C326
0.047
R382
150 TP301
C393 R380
1u50 1.5K 5.0V
+
IC302
C381
0.7V
12P 2.5V
PLL
C382
15P
2.4V
C383
100P
R386
22K
R375
8.3V (0V) 470
+B
W X
3
AU-3
CNP701
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
2
C150
3
22u25
+
3
5
SPARE 4
6
+10V
R364
2.7K
R363
TP302
2.7K
10.0V
2.4V
1.2V
2.0V
(1.8V)
IC303
FM IF
DET/FM
MPX/AM
IF
3.8V
(1.9V) C358
1u50
+
C357
2.2u50 R355
+
3.3K
MECHA BASE
+B
TAPE 1
PLAYBACK
10
C370 HEAD
1u50
+
ZD351
SPARE
R395 C396
47K 100u10
+
L351 C395 ERASE
100uH 0.022 HEAD
TAPE 2
0V
R392
RECORD/
(2.5V)
270 1/4W 10.0V
PLAYBACK
HEAD
R391
270 1/4W
Q360
+B
FM R383
SW 5.6K
ST IND
ON : 0V
OFF : 5.1V
FM ST :
3.9V
R387 MONO :
0V
5.6K
+B
+B
Y Z
16 17 18 19 20
C444
SW601
220P
9kHz 10kHz
50kHz 100kHz
C445
220P
C407
R409 10u50
+
10K
SYSTEM MUTE
-20dB ATT
Q401 Q603
R407 R615
R415
2.2K 2.2K
3.9K
R408
2.2K R616
2.2K
Q402
Q604
5.0V 8
C421
1u50
MUTE ON : 1.3V
OFF : 0V
C143
C423
4700P 1u50
C425
1u50
R417 C427
10K 1u50
C441
47P
+5V
15V
+12V
+10V
PLAY : 8.0V C108
REC : 9.8V 100u16
+
PIN103
R103
4.7K
CHASSIS
REC/PLAY
R101 R102
10K 10K
Q101
CNS101 CNP101
R104
T1 R 1K
1 1
PLAY : 7.3V
Rch
Q101,104-109 REC : 9.8V
SWITCHING PLAY : 7.9V
A GND
2 2
PLAY : 0V
R105
REC : 3.7V
T1 L 1K
Lch
3 3
Q104 R106
2.2K
CNS102 CNP102
0V
R108 0V
M GND
C104
1 1 3.3K
ERASE
ERASE 180P
2 2
T2 R2 0V
Q106
3 3
Rch
A GND
4 4
T2 R1
5 5
Lch
T2 L1
6 6
T2 L2 0V
7 7 Q107 R109
3.3K
C105
180P 0V
PLAY
0V : 0.7V
R107
2.2K
Q105
AA AB
24
AUDIO PROCESSOR
IC401
1 D1 CLK 24
VDD 23 10.0V
2 CE
C406
VREF 22 5.0V 47u16
3 VSS
CCB
+
5.0V 4 L OUT R OUT 21 5.0V
INTERFACE
5.0V
C411 C412
0.15 5.0V 5 L BASS R BASS 20 0.15
C413
5.0V 6 L TRE R TRE 19 5.0V
1500P
C417 C418
1u50 5.0V L IN R IN 18 5.0V 1u50
7
+ +
C419 C420
4.7u50 4.7u50
5.0V 8 L SELO R SELO 17
+ +
5.0V
C422
5.0V 9 L4 R4 16 5.0V 1u50
AUX
+ +
C424
5.0V 10 L3 R3 15 5.0V 1u50
DECK
+ +
C426
5.0V L2 R2 1u50
11 14
TUNER
+ +
5.0V
C428
1u50
12 L1 5.0V R1 13
CD
+ +
5.0V
C442
47P
5.0V
+5V
+10V
R116 C116 C118 C120
56 100u25 0.033 560P
+
PLAY : 4.0V
R114 C114 L102 R118 R120
REC : 0V
2.2uH
1K 330P 100K 3.9K
C122
1u50
C112
+
330P
0.5V
PLAY : 0V
REC : 9.8V
Q102
A DECK : 2.7V
112K
B DECK : 0V
Q103
Hich=T1
112K
Q108
0.6V
C113 IC101
0V
330P
PLAYBACK
L101
R115 C115 R119 R121 REC EQ.
2.2uH
1K 330P 100K 3.9K
0V R117 C117 C119 C121
56 100u25 0.033 560P
Q109
+
R123 C123
5.6K 1u50
+
AC AD
SO401
R421
Lch 1
15K
C443
220P
AUX IN
2
C404
220u16
R422
+ 15K
Rch 2
+10V
CHASSIS
BI11
R-ch
C408 R416 1 1
10u50 3.9K A GND
2 2
+ L-ch
3 3
CD GND
4 4
CD +5V
R-6
+5V 5 5
CD+10V
R410
+10V 6 6
10K
C414
1500P
5.0V
17
C144
4700P
R418
10K
R428
3.9K
R423 R143
R424 470K 220K
470K
0V
0.7V 0.7V
R140 R141
10K 10K
0V
Q110 MUTING Q111
3.5V
0V 0.6V
56K
Hich=CHROME
56K
C133
3300P