Read Sony CHC-TB10 / CHC-TB20 / HCD-TB20 Service Manual online
30
30
HCD-TB20
MAIN Section
: FM
: CD
: PB
: REC
• Signal Path
• R-ch is omitted due to same as L-ch.
+5.6V
TUNER UNIT
IND1
CD-L
6
4
IC201
SOUND PROCESSOR
IC601
REC PB AMP
Q211
REC
18
OUT
BB B1
ST-L
ST-R
ST-CLK
ST-D OUT
ST-D IN
ST-CE
TUNED
STEREO
ST MUTING
RDS-DATA
RDS-INT
R-CH
J201
L
MD/
VIDEO
IN
3
+
–
10
4
12
84
3
IC801
POWER AMP
IC401 (3/3)
MASTER CONTROL
STK POWER
50
LINE MUTE
71
INB1
5 INC1
INA1
CLK
DATA
22 21
Q941
MUTING
SWITCH
R
SPEAKER
OVERLOAD
DET.
Q801
R-CH
Q841,THP841
MUTING
SWITCH
SWITCH
Q971
OVERHEAT
DET.
Q881,882
RY801
RELAY
DRIVER
Q911
RELAY
DRIVER
R-CH
TM801
DRIVER
Q835
SWITCH
Q842
DC DET
Q836,837
SWITCH
Q834
PROTECT
SWITCH
Q831
SWITCH
Q945,946
Q947
AMP-DATA
AMP-CLK
87
88
ST CLK
ST DIN
ST DOUT
ST CE
TUNED
STEREO
ST-MUTE
27
25
23
22
57
34
21
2
18
L
R
SWITCH
Q832,833
R-CH
J771
86
PROTECT
65
CD-POWER
STAND BY RELAY
PHONES
BIAS
OSC
Q642,643
Q680,681
R-CH
L
R
7
9
IC602
4
REC/PB
REC OUT(L)
T601
REC BIAS
ERASE HEAD
ERASE BIAS
37
39
13
B IN(L)
A IN(L)
A/B
REC IN(L)
PB OUT(L)
7
8
5
15
11
10
RV652
REC LEVEL
EQ
ALC
43
TC-RELAY
42
BIAS
44
ALC
14
39
TC MUTE
41
REC MUTE
A+9V
Q639-641
P
R
REC/PB HEAD
RV653
REC
BIAS
D953-956
D901
B+
SWITCH
Q101,102
CD +5V
CDM +3.3V
TCM +3.3V
RDS +3.3V
D +5V
T901
POWER
TRANSFORMER
T911
SUB
TRANSFORMER
+B
-B
+5.7V
REG.
IC102
3
1
A
AC IN
R-CH
R-CH
R-CH
FEEDBACK
CD
SECTION
D957-960
D912-914
M +7V
LDE +7V
+7V
REG.
IC153
3
1
+5.6V
REG.
IC911
3
1
TA +9V
TC +9V
TC +9V
+9V
REG.
IC152
3
1
MICON +3.9V
+4V
REG.
IC101
3
1
TCM +10V
ST +10V
+10V
REG.
IC151
RY911
3
1
D961
D962
D101
POWER AMP
82
HP DETECT
16
17
8
BB A1
120V
220V
240V
S943-1
F903
E
F902
F901
S943-2
220V
120V
AEP,UK
AEP,UK
RDS-DATA
RDS-INT
REC-L
3
4
120V
220V
240V
AEP,UK
F901
120V
220V
240V
Mexican
F901
120V
220V
240V
Korea
F902
11
R-CH
85
FRONT RELAY
SWITCH
20
12
3
1
AC CUT
RESET
RESET
SWITCH
Q501
IC501
RESET
(Page 29)
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