Service manual

CD-C422/C422C/C2800/C2800C
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• NOTES ON SCHEMATIC DIAGRAM can be found on page 13.
Figure 30 SCHEMATIC DIAGRAM (9/10)
T333
C330
10/16
C331
0.022
C335
18P
R343
68K
C357 47/16
Q351
KRA102 M
R351 1.5K
C354
1/50
D381
1SS133
R390 2.2K
VR381
6.8K (B)
VCO
T381
AM IF
C355 100P
T302
FM IF
T382
FM DET
T301
VD301
SVC211C
C306 0.022
C307 10/16
C310
15P (CH)
C314
0.0047
C312
0.022
CF301
C316
0.022
C317
0.001
C305 4.7P
C304
0.01
R301 10
C311
18P
R352 10K
R317 4.7K
C315
0.0047
C309 0.001
C308
4.7P
R311
100K
C318 100P
R323 47K
R322 680
C319 0.001
R309 10K
C313
22P
(CH)
VD302 SVC211C
FM BAND COVERAGE fL
C324
3.9P
R314 22
R315 820
R312 47
L301
B.P.F
FM RF
D301
1SS133
R313
33K
R386
390
CNP301
C302
6.8P
C303 10P
C301
82P
L312
Q301 KTC3194 Y
R387 150
R388
3.3K
C387
3.3/25
C380
0.022
R384
15K
C396
1/50
C395
1/50
R395
3.3K
R393
1.2K
C393
0.027
C381
220/10
Q381 KRA109 M
R385 10K
CF351
C392 1/50
R382 1.5K
C390
0.022
R383 1.2K
R394
1.2K
C382 0.0022
C384
0.018
C385 3.3/25
R396
3.3K
C386 3.3/25
R391 47K
R380 3.9K
R381 33K
C388 0.0015
C389 0.022
C383 470P
C391 22/16
C394
0.027
R389
10K
L317
100µH
C356 0.022
ZD351 MTZJ5.1B
X352
4.5MHZ
R353
2.2K
R358 1K
R357 1K
R356 1K
R354 1K
R361
47K
R355 1K
C353 0.001
C351 0.001
C352 12P (CH)
C350 15P (CH)
C336 470P
C332
18P
C334 0.022
VD332
SVC321C2-1
VD331 SVC321C2-1
R342 100K
R341 4.7K
C333
0.047
T331
R340 100K
141312
11 10
9 8 7
1234
5
6
7
89
3 2 1
3 2 1
1234
5
6
7
89
10 11
22 21 20 19 18 17 16 15 14 13 12
123 4
5
6
7
89
10 11 12
131415161718192021222324
CNS702
1 3 5 4 7 6
TP301
TP302
TP303
TUN_R
TUN_L
GND GND
DO
CL
DI
CE
+12V
3
2
2
3
1
2
13
1
1
2
3
MPX
-IN
FM-
M/ST
VCO
R CH
L CH
TUN
IND
ST
IND
GND
FM IF
IN
DET
OUT
FM
DET
FM
+B
AM/FM
AM
MIX
AM IF
AM
RF

AM
+B
AM
OSC

CE
DI
CL
DO
BO1
BO4
IO1
IF IN
IO2
AM IN
FM IN
VDD
PD
A IN
A OUT
VSS
X IN
X OUT
SRSON/OFF
SRS1/2
IC302
LC72131
PLL CONTROLLER
(D_GND)
(A_GND)
(AUDIO)
AM ANT
AM
TRACKING fL
AM OSC
AM BAND
COVERAGE fL
MAIN PWB-A1(4/4)
AM LOOP ANTENNA
FM ANTENNA
TO MAIN PWB(2/4)
P26 1-B
TO DISPLAY PWB
P22 1-F,P23 9-G
TO MAIN PWB(2/4)
P27 12-E
IC303 LA1805 FM/AF IF MPX. IF
IC301
TA7358AP
FM FRONT END
+B
+B
+B
AM SIGNAL FM SIGNAL