Schematic Diagram - Audio Section - Sony HCD-C770 Service Manual
Sacd/dvd receiver
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Also See for HCD-C770:
- Operating instructions manual (88 pages) ,
- Service manual (142 pages)
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Q Q
3 7 6 3 1 5 1 5 0
6-28. SCHEMATIC DIAGRAM – AUDIO Section – •
J205
6P
T E
AUDIO OUT R
L
1 3 9 4 2 2 9 6 5 1 3
AUDIO IN R
AUDIO OUT L
R237
VIDEO 1
6.8k
AUDIO IN L
R232
VIDEO OUT
6.8k
VIDEO IN
R251
R231
75
75
R243
6.8k
AUDIO IN R
COMPONENT
VIDEO OUT
Y
R249
6.8k
VIDEO 2
AUDIO IN L
COMPONENT
VIDEO OUT
PB/CB
VIDEO IN
COMPONENT
VIDEO OUT
PR/CR
J206
6P
R254
75
w w w
.
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•
See page 69 for Waveform.
See page 74 for IC Block Diagrams.
(AEP)
C201
330p
Q201
2C2412
BUFFER
R204
R202
R205
47k
1k
100k
RDS DECODER
R203
68k
C204
560p
C207
4.7
50V
IC201
BU1924F-E2
C221
C223
0.1
C225
R230
C233
R229
C234
100k
1000p
100k
1000p
R233
10k
C236
R235
R241
C238
C237
220p
47k
47k
220p
22
R238
6.3V
10k
C235
22
6.3V
R250
10k
C239
22
R244
35V
10k
C228
C226
0.1
C241
R242
R247
22
10k
10k
35V
R253
C242
R236
R252
47k
220p
10k
10k
R246
C240
47k
220p
Q208
DTC343TK-T
-146
C243
10 6.3V
C245
10
50V
x
a o
u 1 6 3
y
i
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8
C214
0.01
C213
0.01
R201
4.7k
R206
R292
C215
C216
R293
470k
1k
1
1
1k
R207
270
R290
R291
C203
470k
470k
0.1
C209
Q220
Q221
47
2SC2412
2SC2412
16V
AMP
AMP
C210
C211
R294
R295
22
22
C205
330
330
35V
35V
0.01
C206
51
C208
56
X201
4.332MHz
22
35V
R223
R218
R217
R225
R214
R215
0.1
10k
10k
33k
33k
6.8k
6.8k
C220
Q
Q
22
3
7
6
35V
3
1
R219
C224
100
22
R224
R226
35V
R220
100
33k
100k
R222
R221
33k
100k
AUDIO INPUT
SELECTOR
Q206
DTC124EK
IC202
INVERTER
C222
MC14052 BDR2
22
35V
Q205
DTC124EK
INVERTER
0.1
R227
1k
C230
10 50V
R228
C232
1k
10
50V
Q207,208
MUTING
Q207
DTC343TK-T
-146
R239
1k
R245
1k
.
57
57
2
4
9
9
8
CN201
11P
L-CH
TD
R212
220
TUNED
R-CH
10V
A.GND
FM-DET
A.GND
CL
R208
220
CK
DO
R209
220
L205
DO
10µH
CE
R211
220
CE
Q222,223
DI
R210
220
DI
B+ SWITCH
Q222
2SA1037AK
R216
4.7k
Q223
DTC124EKA
R213
47k
DO
DI
TD
CE
CL
L206
10µH
5
1
5
0
8
9
2
4
9
C227
22
35V
m
c o
HCD-C770/C990
2
9
9
COAXIAL
FM/AM TUNER
FM
PACK
75Ω
SUPPLIED WITH
THE ASSEMBLED
AM
BLOCK
CNP205
CN205
2P
2P
S201
SCAN SELECT
SELECTABLE
INTERLACE
CN202
29P
RDATA
RCLK
TUNDO
TUNDIN
TUNSTE
TUNCE
TUNCLK
D.GND
D.IN
D.DND
D.OUT
D.GND
I/P-SEL
NC
AV0
AV1
8
2
9
9
(Page 50)
AV2
AUMUTE
TU-ON
DGND
L
A.GND
R
A.GND
R.IN
A.GND
L.IN
10V
10V
CN204
2P
R
AMP BOARD
(1/2)
PIN301
(Page 54)
CN208
11P
Y
CB
V-OUT
CR
V1-IN
AV2
V2-IN
AV1
(Page 59)
AVO
GND
D-IN
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