Service manual
XL-520W/CP-520
– 20 –
Figure 20 SCHEMATIC DIAGRAM (1/4)
A
B
C
D
E
F
G
H
1
23456
• NOTES ON SCHEMATIC DIAGRAM can be found on page 29.
FM IF
FMRF
R361
15K
22 21 20
19 18
17 16 15 14
13 12
1110
98765
4321
24 23 22 21 20
19 18
17 16 15 14 13
121110
9
87
654
321
2
1
123123 4 56
798
13
5
9
12
7
6
11
8
10
2
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
+B
+B
+B
+B
+B
+B
+B
+B
+B
CD SIGNAL
RECORD SIGNAL
PLAYBACK SIGNAL
AM SIGNAL
FM SIGNAL
3
2
1
3
2
1
MW +B
SWITCHING
32
1
REC MUTE
SWITCHING
32
1
REC MUTE
REC SW
P/B SW
CONT
P/B SW
REC SW
SWITCHING
SWITCHING
3
2
1
BEAT CANCEL
SWITCHING
BEAT CANCEL
SWITCHING
BIAS OSC.
SWITCHING
SWITCHING
SWITCHING
SWITCHING
SWITCHING
AM IF
FM AFC
AM OSC IN
AM OSC OUTFM IF IN
REG
AM MIX OUT
AM RF IN
GND
AM IF IN
SD
AM LOW CUT
FM/AM OUT
STEREO
FM DET
VCC
MPX VCO
MPX IN
IF OUT
PHASE
PHASE
(AM/FM)
MO/ST
L-CH OUT
R-CH OUT
VSM
AM TRACKING fL
AM BAND
COVERAGE fL
FM BAND
COVERAGE fL
AM LOOP
ANTENNA
FM 75OHMS
ANTENNA
TERMINAL
FM FRONT END
VSS
AOUT
X OUT
AIN
PD
VDD
FM IN
AM IN
NC
MO/ST
SW
IF REQ
IF IN
DO
FM
MW
FM
CL
DI
CE
NC
X IN
TAPE
TAPE
REC
R
REC
L
FM+B
+
–
–
+
ALC
MUTE
150K
150K
3
2
1
32
1
RECORD/PLAYBACK
HEAD
ERASE HEAD
R-CH
L-CH
Vr
MAIN PWB-A1
BF301
C319
18P
(CH)
C304
0.01
D305
1SS133
C306
6.8P(UJ)
L302
R302
100K
VD303
KDV147C
R303 33K
L303
C305
0.0047
C307
0.0047
C308
0.022
C309
0.001
C310
0.022
R301
22
Q305
2SC535C
R304
47K
C315
100P
R305
680
C316
10/16
C317
0.022
T304
C311
15P(CH)
R306
10
R307
47
C312
33P
3.3P
C313(UJ)
(CH)
22P
C314
R308
10K
VD302
KDV147C
C318
4.7P
R309
820
IC301
TA7358AP
C303
0.001
VR351
10K(B)
Q155
KTC3199GR
Q172
KRC102M
R121
4.7K
C370
1/50
VD301-1
KV1236Z23F
VD301-2
KV1236Z23F
C337
0.022
C349
0.022
CNP301
SO301
CNP6
0
IC101
BA3126N
HEAD SELECTOR
R138
330
CNS101
CNP101
R113
3.9K
R114
3.9K
R141
330
C122
82P
R139
2.7K
C121
82P
R120
56
R119
56
R112
1K
R111
1K
R387
5.6K
C374
0.018
C373
0.018
C371
1/50
D104
1SS133
R132
4.7K
Q106
KTC3199GR
R155
56
R157
150
R156
150
R103
120
R13
7
4.7K
R136
10K
D105
1SS133
D106
1SS1
3
Q171
KRA102M
R140
10K
C101
470P
C102
470P
R102
1K
R101
1K
Q107
KRC104M
R104
120
R153
10K
R154
10K
C118
0.022
R106
150K
R134
100K
C126
22/16
R133
1K
R131
4.7K
Q105
KTC3199GR
R127
3.9K
R129
3.3K
R105
150K
C109
0.015
(ML)
R107
10K
R109
3.9K
C119
0.01
C107
47/16
C111
10/16
C112
10/16
C110
0.015(ML)
R108
10K
IC102
BA3311L
REC./P.B. EQUALI ZER
R130
3.3K
R135
680K
C125
100/25
R110
3.9K
R128
3.9K
C120
0.01
D102
1SS133
D101
1SS133
C105
270P
C104
330P
C123
2.2/50
C124
47/16
C108
47/16
C106
270P
C103
330P
C152
0.001
C151
180P
R160
5.6K
R159
5.6K
Q154
KTC3199GR
C156
0.022
C153
0.0039
(P.P)
C154
0.027
(ML)
R151
47K
R152
100K
Q153
KRC104M
C155
47/16
Q152
KTA1266GR
Q151
2SC2001-K
L151
330µH
R116
15K
C113
4.7/25
C114
4.7/25
R126
5.6K
C130
4.7/25
C129
4.7/25
R123
4.7K
R124
4.7K
R122
4.7K
R117
22K
R118
22K
Q103
KTC3199GR
Q101
KTC3199GR
Q104
KTC3199GR
Q102
KTC3199GR
C117
10/16
R125
100K
C116
0.0022
C115
0.0022
R115
15K
R392
390
R391
390
L352
100µH
L351
100µH
IC302
LC72131
PLL CONTROLLER
IC303
LA1832
FM IF DET./
FM MPX./AM IF
R371
1K
R372
1K
R373
1K
R374
1K
C383
0.022
R376
10K
C386
330P
R386
330
R393
1K
R351
5.6K
R395
47K
X351
Q351
KRC104M
CF302
X352
4.5MHz
C384
0.001
C382
15P(CH)
C381
12P(CH)
R377
5.6K
R359
1.8K
C380
1/50
C392
0.001
R365
10K
R360
4.7K
R382
330
R381
10K
C393
1/50
R380
1.5K
R379
2.2K
C394
47/16
C385
0.01
C387
0.022
C397
0.022
R384
12K
R383
5.6K
R385
5.6K
C391
47/16
Q360
KTA1266GR
L353
1mH
C342
0.022
R358
8.2K
CF351
C364
10/16
C356
0.001
R363
3.3K
R364
3.3K
C395
0.022
C396
100/10
ZD351
MTZJ5.1B
C357
2.2/50
C358
1/50
R352
1K
C398
100/10
C352
10/16
R355
3.3K
R353
270
C355
22P
C399
0.022
C354
0.022
C353
0.022
C350
0.022
C344
33P
C351
0.022
CF352
T351
R357
470K
R356
1K
R350
2.7K
C372
1/50
C368
1/50
C367
1/50
C362
3.3/50
C369
56P
C366
0.001
C365
0.022
C363
0.022
C361
0.022
C343
33P
C360
0.022
R336
4.7K
C331
0.047
C332
0.022
C333
0.022
C330
8.2P
(UJ)
R319
100K
T302
C334
18P
(UJ)
C336
470P
C335
18P
(CH)
R324
100K
R323
68K
T306
D302
1SS133
D301
1SS133
FM MUTE
LEVEL
R321
22
TP302
R310
4.7K
C301
0.001
TP301
R362
15K