Schematic Diagram - Main Board (1/2) - Sony CMT-A70 Service Manual

CMT-A50/A70
Ver. 1.2
6-8. SCHEMATIC DIAGRAM – MAIN Board (1/2) –
(1/2)
CNF301
11P (US,CND,KR,AUS)
15P (AEP,UK,IT,EE,RU)
ANTENNA
RDS DATA
FM 75Ω
RDS INT
(COAXIAL) AM
NC (AEP,UK,IT,EE,RU)
RDS+3.3V
ST MUTE
R OUT
TUNER (FM/AM) AGND
SUPPLIED WITH L OUT
THE ASSEMBLED
STEREO
BLOCK
TUNED(O)
+9V
ST CE
ST DIN
ST DOUT
ST CLK
C202
1000p
CN302
HRPE301 7P
L-PB
(L-CH)
L-REC
(REC/PB) GND
R-REC
(R-CH)
R-PB
GND
E-HOT
(ERASE)
C201 RV201
22p 220k
C101
22p
RV101
220k
T301
BIAS OSC
C301
0.01
100V
C383
2200p
Q334
2SC4081Q
ISS
R388
100k
CMT-A50/A70
• See page 40 for Waveforms. • See page 40 for IC Block Diagrams.
27
C215 R230
10 50V 4.7k
29
76
C115 R130
10 50V
4.7k
61
62
56 C312 0.01
55 C311 470 10V
28 C411 470 10V
57
Q302,304
REC/PB LEVEL SHIFT
SWITCH
IC302
BA3126N
Q302
KRA103M
-AT
Q304
KRC102M
-AT
R310
4.7k
R207 R208
1k 4.7k
C212
10
R201 R203 R206
50V
4.7k 4.7k 220
T201
R107 R108
C204 R202 R204 1k 4.7k
C102 470p 10k 47k
1000p
C205
4700p
C112
10
R106
50V
220
C104 C105
470p 4700p
R102 R104
10k 47k
C209 R213
T101 10 50V 100k
R101 R103
4.7k 4.7k
C206
R212
10 50V
4.7k
Q307,308
BIAS OSC
C106
10
50V R112
4.7k
Q307
KTC3198Y
C109
R113
10 50V
100k
R306
4.7 R307
4.7
C302
2.2
50V
Q308
KTC3198Y
Q310 Q311
2SD1387-34 KTA1266-GR
-TP -AT
R304
22k
C308
R302
47 Q310,311,313
2.2k
35V
R389 R303 REC BIAS
470 2.2k
SWITCH
R305
10k
C307 Q313
C387 R301
10 KRC102M
0.022 4.7k
50V -AT C309
100
16V
C216 R231
470p 47k
C296
C116 R131 L305 D301
100
470p 47k 10µH 1SS133T-77
16V
L306
10µH
R311
10
Q328
Q327
KTA1273Y-AT
KTA1273Y-AT
B+ SWITCH
B+ SWITCH
R382 R383
47k R384 47k R385
1k 1k
D316
1SS355TE
R209 C213
1k 0.022
R210 R211
100k 47k
NC
NC
C114 10 50V
R109 C113
TAPE L
1k 0.022
C214 10 50V
TAPE R
PB NF R
R110 R111
PB OUT R
100k 47k
PB OUT L
PB NF L
C111 1 50V R105 1k INPUT SELECT,
NC
ELECTRICAL VOLUME
C211 1 50V R205 1k
NC IC301
BD3402KS2
TAPE IN L
R215 C210
TAPE IN R
C208 100k 0.01
470p
REC NF R
REC OUT R
R214
C207 220k R216
REC OUT L
220p 470k
REC NF L
R116
C107 R114 470k
220p 220k
C108 R115 C110
470p 100k 0.01
Q329
KRC102S
TUNER
ON/OFF C313
R312
47
CONTROL 220k
35V
C317 C314
0.1 0.1
(Page 29)
28 28
R233
C230 R232 1k
470p 47k
C130 R132
470p 47k R133
1k
R226
1k
Q201
DTC343TS-TP
R234 MUTING
4.7k
R134 R126
4.7k 1k
Q101
DTC343TS-TP
MUTING
C121 C120 C220 C221
470p 2200p 2200p 470p
C228 R223
10 4.7k
50V C227
100p
C226 R222
1 22k
50V
R314
10k
R235
1k
Q203
DTC343TS-TP
MUTING
R221
GND
100k
C123 C223
47 47
R121 R313
35V 35V
100k 10k
R118 R218
0 0 R135
1k
Q103
NC
R117 R217 DTC343TS-TP
2.2k 2.2k
NC MUTING C321
470
NC C126 10V
1
R122 C127
NC 50V
22k 100p
BASS NF L
C122
BASS OUT L 0.22
BASS OUT R C222
0.22
HEADPHONE
BASS NF R
AMP
NC
TONE OUT R C224
22
VOL IN R 50V
Q303,305
TONE OUT L C124
22 MUTING CONTROL
VOL IN L 50V
NC
C125
10
NC
50V
VOL OUT L
VOL Q303
KRA102S
OUT R
-RTK
Q305
KRC102S
-RTK
C319
0.1
C225
10
50V
C320
1000
16V
R219
4.7k
R390
22
D302 1SS133T-77
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
FB202
C231
J301
0.001 FB301
1.1µH LINE IN
C131
0.001
FB101
R225
22
C229
10
50V
R224
10k
VCC
C129
R124 10
10k 50V
CN311
5P
R123
HP-R
4.7k
AGND
C128
10 HP-L
50V
AGND
HP-SW
(Page 33)
C297
0.1
50V
R315
47
Les composants identifiés par une marque 0 sont
critiques pour la sécurité. Ne les remplacer que
par une pièce portant le numéro spécifié.