Sharp CD-C462 - Page 22

CD-C462/C462C
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• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.
Figure 22 SCHEMATIC DIAGRAM (9/10)
3
2
1
7
6
5
4
3
2
1
TAPE2
RECORD/
PLAYBACK HEAD
ERASE HEAD
R-CH
L-CH
TAPE1
PLAYBACK HEAD
L-CH
R-CH
IC302
LC72131
PLL CONTROLLER
C302
18P
(CH)
C395
100P
T302
R382
82
C309
6.8P
(UJ)
D301 1SS133
VD303
KDV147B
C318 22P (CH)
R314
10K
1
2
3
R323
100K
(UJ)
C334
6.8P
R317
820
R302
22
R311
220K
R375
1.2K
CF301
C314
10/50
C319
0.022
C331
0.047
C332
0.022
R356 10K
R358 3.3K
Q343
KRA109 M
R361
10K
C357 3.3/50
R350
47K
C349 0.022
C350 220/10
C338
100P
R320
10K
C337
10/50
C333
0.022
C313
0.022
VD302 KDV1472B
L303
OSC.FM
C317 8.2P
T301
T352
T351
NC
R321
120
C369
47/25
BF351
R316
4.7K
C354 470P 
R381
10K
R380
1.5K
C393
1/50
C316
100P
R312
680
Q302
2SC535 C
C305 4.7P (CH)
R306
10
R340 47K
D303 1SS133
D302 1SS133
R372 1K R373 1K R374 1K
C392
0.001
C358
0.0015/100
(P.P)
C359
0.022
R352
15K
C366 1/50
R369
2.2K
D342
1SS133
X352 4.5MHz
C381
12P
(CH)
L303
L302
T351
T302
T302
FM BAND COVERAGE (fL)
FM RF (fH)
AM IF
AM BAND COVERAGE (fL)
AM TRACKING (fL)
C382
15P
(CH)
R379
2.2K
C361
22/25
C364 0.033
L302
R301 33K
R303 100K
C310
0.001
C308
0.0047
C307 0.0047
R363 3.3K
C312
0.001
C311
0.022
C383
0.022
ZD351
MTZJ5.1B
L343
100µH
C360 0.022
C365 1/50
R357 3.3K
R359 2.7K
C363 0.033
R360 2.7K
C367
1/50
C351
0.0022
C353 0.018
C355
3.3/50
C356 3.3/50
D305
1SS133
D304
1SS133
CNP301
BF301
Q344
KRA102 M
R371 1K
R362 390
R365
150
(1/2W)

R347 3.9K
R348
33K
R349
1.5K
3
2
1
3
2
1
123
123
456 789
0.8V 1.6V 5.8V 1.5V 0V 5.8V 5V 5.7V 5.8V
123 4
2
3
1
56 7 8 9
10 11 12
131415161718192021
NC
222324
123456789
10 11
1213141516171819202122
VR351
6.8K
C153
100/16
R155
150
R119
56
C136 0.068
R142 56
C118 0.033
R122 100K
R124 3.9K
C122 1/50 
C116
47/25
C114
330P
R118
1K
C112
330P
C101
0.001
C102
0.001
C105
180P
R103
2.2K
Q103
KTC3200 GR
R105
3.3K
Q105
KTC3200 GR
Q107 KTC3199 GR
R107 47K
C107 0.001
R106 3.3K
Q104 KTC3200 GR
Q106
KTC3200 GR
R104
2.2K
C106
180P
R125
5.6K
R121 100K
R131 33K
C133 22/25
R141 56
R135 2.2K
C129 470P
R139 560
R117
1K
C113
330P
C141 1/50
C127 0.022
C128 3.3/50
C131 0.001
Q109 KTA1266 GR
R114
10K
R113
10K
C109
0.047
Q110
KRC104 M
Q111
KRC104 M
R154
10K
C146 220/10
R146 10K
C135 0.068
C139 0.0033
R145 10K
R111
10K
R137 6.8K
IC101
AN7345K
PLAYBACK AND RECORD
/PLAYBACK AMP.
C115
47/25
C121 1/50
R123 3.9K
C119 560P
C117 0.033
C145 22/25
C140 0.0033
C130 470P
R136 2.2K
C142 1/50
R134 68K
R140 560
C132 0.001
R138 6.8K
C134 22/25
R132 33K
R120 56
C120 560P
R126
5.6K
R102
1K
C111
330P
R101
1K
C108 0.001
Q108 KTC3199 GR
R108 47K
R110 4.7K
R109 4.7K
CNP101
CNP102
R182
220K
R112
10K
Q121
KTC3199 GR
R153
10K
R158
220
Q126
KRC104 M
R164
4.7K
R162
47K
R160
150
Q124 2SA1015 GR
R166
47K
R167
100K
Q128 KTC3203 Y
R168
12
C152
47/25
L104
330µH
R181
220K
R115
4.7K
D102
1SS133
D101
1SS133
Q122
KTC3199 GR
7
6
5
4
3
2
1
3
2
1
FM IF
FM DET
AM IF
MAIN PWB-A1(2/2)
VCO
CE
TUN_R
DI
TUN_L
CL
A_12V
A_GND
D_GND
FM ANT
AM LOOP ANT
AM ANT
MPX
-IN
FM-
M/ST
VCO
AM /FM R-CH L-CH TUN IND ST IND GND AM IF AM MIX
FM IF IN
DET
OUT
FM
DET
FM
+B
+B
+B
+B
+B
+B
+B
+B+B
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
TP301
TP302
FM
BAND PASS 
FILTER
CHASSIS
GND
0.7V
4.4V
0V
0.2V
10.9V
11V
4.4V
5.1V
8.4V
DO
3
2
1
32
1
IC303
LA1805
FM/AF IF MPX.
C303
0.01
C306
15P
(CH)
C304
4.7P
(CH)
IC301
TA7358AP
FM FRONT END
1
2
3
4
5
6
7
8
9
C150
0.0039/100
(P.P)
0V
0V
0V
0V
0V
0V
0V
0.7V
0.7V
0V
0V
TAPE2_L2
TAPE2_L1
TAPE2_R1
A_GND
TAPE2_R2
ERASE
M_GND
0V
0V
0.7V
0V
0V
0V
0.7V
0V
56K
Hich=CHROME
56K
ALC
Nor/CrO2
ALC
RIPPLE
GND
Vcc
11.6V
0V
0V
11.7V
0V
11.6V
10
11
12
13
14
15
16
17
M_GND
BIAS
TAPE_L
REC_L
REC_R
REC_MUTE
T1/T2
TAPE_R
0V
0V
0.7V
0.7V
0V
0V
9.3V
9.3V
8.6V
3.4V
3.4V
0V
0V
0V
TAPE1_L
A_GND
TAPE1_R
Hich=T1
112K
112K
2
3
1
321
2324 22 21
45
20 19
67
18
12
89 10 11
1617 15 14 13
3
2
1
3
2
1
C151
0.027
(ML)
TO
DOLBY PRO LOGIC SECTION
P16 2-A
+
–
––
–
+
+
+
1.1V
1.7V 1.1V 1.7V 0.6V
1.6V
0.5V
7.4V
7.2V 1.6V 1.6V 1.6V
1.6V
1.6V 7.2V
1V
1.6V
0V
5.5V
0V
2.2V
2.3V
6.6V
0.9V
0V 0V 0V 0V 0V
5.3V 0.9V
0.9V 5.6V 0V
2.7V
5.5V 1.7V
0V 0V
0.2V 4.3V 4.2V 0.2V
0V
0V
2.7V
0.5V
0V 0V 4V 0V
1.3V
0V 0V
0.6V
3.9V 3.9V
0V
0.5V 0V 0V 4V 0.8V 0.8V 0V 7.8V 0.6V 3.9V 0V 4.6V
CNS102
CNS101
AM SIGNAL
FM SIGNAL
RECORD SIGNAL
PLAYBACK SIGNAL