Service manual
CD-CH1500H/CD-CH1500W
– 22 –
Figure 22 SCHEMATIC DIAGRAM (1/14)
A
B
C
D
E
F
G
H
1
23456
• NOTES ON SCHEMATIC DIAGRAM can be found on page 49.
CD-CH1500H
1
1
3
2
3
2
1
3
2
E
F
G
H
I
J
K
L
M
N
MAIN PWB-A(1/3)
FM SIGNAL
AM SIGNAL
C370
1/50
FE301
FM FRONT END
CT37
0.1
XT21
4.332MHz
RT26
1K
CT21
100/16
RT39
220K
CT23
10/50
LT22
2.2µH
CT25
560P
CT24
0.022
DT31
DS1SS133
ICT21
LC72722
RDS DECORDER
LT21
2.2µH
CT22
0.022
RT37
220K
RT28 1K
RT36
220K
RT35
220K
CT29
0.022
CT26
22P(CH)
CT27
22P(CH)
CT28
100/16
RT29 1K
RT30 1K
QT21
KTC3199GR
CT36
0.022
RT32
10K
RT33
56K
RT34
56K
R354
3.9K
R389
3.9K
L352
100µH
R391
270
R393
1K
R377
47K
C395
0.022
C320
0.047
C396
100/16
X351
456 kHz
R359
1.8K
C367
1/50
R350
2.7K
C364 4.7/50
C363 0.022
C365 0.022
L353
1mH
VR351
10K(B)
C362
3.3/50
C350
0.047
C361
0.022
C342
0.022
IC303
LA1832S
FM IF DET./FM MPX./AM IF
R351
5.6K
C352
10/50
C351
0.022
R355
3.3K
C356
0.001
C357
2.2/50
C355
22P(CH)
C399
0.022
C398
100/16
R353
270
C354
C353 0.022
0.022
C366 0.001
R356
1K
C368
1/50
CF351
T351
C358
1/50
R352
1K
C343
33P(CH)
C374
0.022
R358
8.2K
R363
1.2K
C373
0.022
R357
470K
Q351
KRC104M
R364
1.2K
C372
1/50
C371
1/50
R361
4.7K
R362
4.7K
R370
1K
CF352
Q301
2SC380-O
R346
330
CF302
R349
33
R347
6.8K
R348
680
R344
470
C330
18P(CH)
R336
10K
C323
0.022
T302
C332
0.022
C331
0.047
T306
C335
330P(CH)
C334
18P(CH)
C337
0.022
VD301
SVC348S
R323
68K
C339
100P(CH)
D301
DS1SS133
D302
DS1SS133
C338
0.001
L341
BALUN
D304
DS1SS133
D303
DS1SS133
CNP301
D311
DS1SS133
D312
DS1SS133
SO301
FM ANTENNA
TERMINAL
C310
100P(CH)
C311
100P(CH)
C312
100P
(CH)
C384
0.001
R372
1K
R373
1K
R374
1K
D305
DS1SS133
D306
DS1SS133
R399
10K
C389
0.001
R392
270
DZ351
DZ5.1BSB
R383
5.6K
C302
0.001
Q371
KTA1266GR
Q360
2SB562 C
R384
5.6K
R371
4.7K
C391
47/16
R385
5.6K
D352
DS1SS133
IC302
LC72131
PLL(TUNER)
C390
0.001
L351
100µH
C394
47/16
C387
0.022
R380
1.5K
R379
2.2K
C385
0.01
C392
0.001
C393
1/50
R381
10K
R345
4.7K
C321
100/16
R376
1K
C386
330P(CH)
C341
0.1
C346
0.022
L342
2.2µH
X352
4.5 MHz
C381
12P(CH)
C382
15P(CH)
R378
82K
C397
0.022
R360
4.7K
R382
150
C380
10/50
R395
47K
C347
0.022
C301
0.001
R369
82
C345
0.022
CF301
L354
LOW PASS
FILTER
C319
0.1
1
3
2
C344
33P(CH)
VT
VT_CK
A_GND
TUN_R
VSM
TUN_L
A_+B
D_GND
C2B_CE
C2B_CL
C2B_DI
C2B_DO
C2B_CE
C2B_CL
C2B_DI
C2B_DO
AM LOOP
ANTENNA
1
2
12
24
23
22
21
20
19
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
FM IF IN
AM MIX OUT
AM OSC OUT
FM AFC
AM OSC IN
AM RF IN
AM LOW CUT
VSM
FM/AM OUT
MPX VCO
MPX IN
R-CH OUT
L-CH OUT
PHASE
(FM/AM)
PHASE
IF OUT
VCC
FM DET
STEREO
SD
GND
AM IF IN
REG
MO/ST
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
MUTE
IO2
IF IN
X OUT
X IN
CE
DI
CL
DO
AM IN
FM IN
VDD
PD
AIN
AOUT
VSS
FM
MW
MO/ST
ST IND
NC
24
23
22
21
20
19
18
17
16
15
14
13
12 11
10
9
8
7
6
5
4 3
2 1
VREF
FLOUT
VSSA
MPXIN
CIN
T1
T2
T3
T5
XOUT
VSSD
T7
SYNC
DI
RDS-ID
DO
CL
SYR
T6
CE
VDDD
XIN
VDDA
T4
C2B_CL
C2B_DI
C2B_CE
C2B_DO
8
7
6
5
4
3
2
1
ANT
GND
GND
GND
VT
VCC
IF OUT
F OUT
18
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
FM
MUTE
LEVEL
AM IF
AM TRACKING
fL
AM BAND
COVERAGE fL
AM ANT.
AM OSC.
FM IF AMP.
VOLTAGE
REGULATOR
AMP.
+B
+B
+B
P30 4 - A
TO AUDIO SECTION
TP302
TP301
SWITCHING
SWITCHING