Service manual
– 33 –
CD-C449W/K449W
7
8 9 10 11 12
Figure 33 SCHEMATIC DIAGRAM (12/15)
Q361
KRC107 M
Q365
KRC107 M
C343
15P (CH)
R396
1K
R398 1K
R397
1K
C397
0.022
CF352
AM IF
T351
R352
1K
R371 1K
R372 1K
R373 1K
R374 1K
C380
1/50
R390
82K
C383
0.0022
D353
1SS133
X351
456kHz
C365 0.022
C363 0.022
C364 10/16
C355
22P
Q354
KTC3199 GR
MUTING
MUTING
Q353
KTC3199 GR
10K
R365
R367
1K
C375
3.3/50
R368
33K
R357
470K
R356
1K
C368
1/50
R350
2.7K
C367
1/50
C366 0.001
C398
100/10
C399
0.022
270
R353
C354
0.022
C353
0.022
C342
0.022
VR351
10K(B)
C350
0.022
IC303
LA1832
FM IF DET./FM MPX./AM IF
C373
0.022
C374
0.022
R361
5.6K
R362
5.6K
C371
1/50
C372
1/50
R359
1.8K
R382
150
R381
10K
R380
1.5K
R379
2.2K
IC302
LC72131
PLL CONTROLLER
X352
4.5MHz
D352 1SS133
R366
10K
C394
47/16
C393
2.2/50
R384
5.6K
R383
5.6K
L351
100µH
C385
0.01
R393 1K
C370
1/50
L352
100µH
R391
390
R392
390
ZD351
MTZJ4.7B
C396
100/10
C395
0.022
R377
47K
C392
0.001
C387
0.022
R376
1K
R360
4.7K
C391
47/16
Q360
KTA1266 GR
R385
5.6K
ZD352
MTZJ3.9B
R387
22K
D351
1SS133
C381
12P (CH)
C382
15P (CH)
L
356
mH
R395
47K
C386
330P
C351
0.022
R351
5.6K
2.06V
5.01V
2.07V
2.06V
0V
0.65V
0.65V
11.6V 12.18V
11.37V
0V
0V
0V
0V
2.52V
2.52V
0V
0V
0V
4.82V
5.1V
0.16V
12.1V
3.85V
3.95V
5.1V
2.38V
0V
0V
0V
2.48V
5.11V
0.9V
0.9V
2.1V
0V
5.09V
5.09V
2.84V
5.01V
3.68V
3.85V
3.85V
3.95V
1.18V
1.19V
2.05V
2.29V
2.52V
0V
0.46V
2.2V
2.2V
5.01V
3.48V
C352
10/16
L353
1mH
R358
8.2K
C362
3.3/50
C361
0.022
L357
4.7mH
L358
560mH
C360
0.022
CF302
1
0.7MHz
FM1F
C356
0.001
R354
4.7K
C357
2.2/50
R355
3.3K
C358
1/50
1
11
121314151617202122 1819
10
98
7
6
5
4321
11
10
98
7
6
5
432
131415161718192021222324
12
11
10
9
8
7
6
5
4321
CNP303
R363
1.5K
R364
1.5K
IF IN
STEREO
MO/ST
SW2
AM IN
FM IN
VDD
PD
AIN
CE
DI
CL
DO
FM
MW
SW1
MO/ST
L-CH
OUT
R-CH
OUT
MPX IN
MPX VCO
FM/AM OUT
AM LOW CUT
VSM
AM RF IN
FM AFC
AM OSC IN
AM OSC OUT
FM IF IN
AM IF IN
AM MIX OUT
REG
GND
SD
STEREO
FM DET
VCC
IF OUT
PHASE
PHASE
(FM/AM)
NC
NC
TP 302
AOUT
VSS
X IN
X OUT
GND(D)
CL
DO
CE
DI
+12V(A)
GND(A)
TUNER MUTE
L-CH
R-CH
SD
+B
+B
FROM MAIN PWB
P24 1-E
CNSF13
+B
3
2
1
+B
FMIF
3
2
1
3
2
1
3
2
1
M
MUTE
E
VEL
AMIF
CF351
FMIF
TUNER PWB-E
+B