Sony STR-DE185 Service Manual ▷ View online
STR-DE185
17
17
4-8. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 15 for Common Note on Schematic Diagram and page 20 for IC Block Diagrams.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
Replace only with part number specified.
IC B/D
IC B/D
R915
Q703
Q704
Q754
C702
C703
C704
C752
C753
C754
D782
D783
D784
D785
D908
D909
D910
D911
D981
D982
Q701
Q705
Q706
Q751
Q781
Q782
Q786
R681
R697
R704
R705
R707
R708
R714
R754
R755
R758
R759
R764
R781
R782
R783
R786
R787
R788
R792
R793
R794
R901
R904
R905
R906
R909
R910
R911
R912
R916
R929
R930
R789
Q784
B901
Q756
Q755
R923
D912
R917
R652
R602
R603
R653
C606
C656
C929
C930
C921
C920
C919
C922
C911 C791
C910
C903
C904
C908
C905
C917
C914
C705
C912
C913
C901
C902
C682
C601
C651
R655
C657
C607 R605
C751
C701
R757
R711
R712
R709
R701
R702
R753
Q752
Q702
R703
Q753
R752
R751
D751
R762
R761
R760
R710
D701
C755
R713
R763
L751
L701
R795
R785
R784
C781
Q785
R790
D787
D786
Q783
D788
D789
C916
R914
C906
C907
R902
R908
R907
C915
CNP901
CNP905
CNP906
CNP907
D901
D902
D902
D903
D904
D904
D905
D906
C909
Q680
CNP801
RR701 CC701 CC702
RR751 CC751 CC752
RR702 CC703
CC704
RR752 CC753 CC754
CNP802
Q903
Q904
CNJ901
CNP903
CNP904
Q901
T902
J803
C603
C653
C604
C654
C652
C602
R706
R756
RY781
RY782
RY783
D781
TM801
T901
RY981
D907
R913
C918
D913
IC902
CN5
EP901
R903
F902
F901
RY982
R604
R654
C782
C923
Q681
IC601
IC901
Q902
(Page
16)
16)
(Page 16)
(Page 18)
STR-DE185
18
18
4-9. SCHEMATIC DIAGRAM — DISPLAY SECTION — • Refer to page 15 for Common Note on Schematic Diagram.
• Waveform
5.4Vp-p
1
IC201
eg
(X2)
2V/div 0.2µsec/div
4.19MHz
D205
D206
Q204
Q205
S201
S202
S203
C204
C207
C208
C209
C210
CN2
D203
D204
Q202
R229
R231
R232
R233
R233
R234
R235
R235
R236
R238
R240
R241
R245
R246
R247
R248
R252
R253
R254
R256
R257
R258
R259
R260
R261
R273
R288
R296
R299
R300
R301
R301
S204
S205
S206
S207
S208
S209
S210
S211
S212
S213
S216
S217
S218
S219
S220
S221
S222
S223
S224
S225
S226
S227
S228
S229
S230
S231
S232
S233
S234
S235
S236
S237
S238
R230
R303
R262
S239
S214
S215
C217
C218
C206
C219
C226
C213
C215
C214
C214
R310
R308
R309
R307
R306
C216
R298
R255
C211
C212
R302
R291
R292
R250
C221
C222
R239
R249
R265
R266
R267
R268
R276
R275
R274
R269
R270
R271
R280
R279
R287
R286
R285
R284
R283
R277
R272
R264
R282
R263
R281
R278
D201
D202
L201
Q201
R297
R228
R227
FL201
Q206
RV201
X201
IC202
IC201
R293
R237
R294
R311
CN1
R242
R295
C205
R244
R243
R243
C203
C225
CN6
C202
R251
R289
R290
CNP2
(Page 16)
(Page 17)
STR-DE185
19
19
4-10. PRINTED WIRING BOARD — DISPLAY SECTION — • Refer to page 11 for Circuit Boards Location and page 15 for Common Note on Printed Wiring Boards.
1
A
B
C
D
E
F
2
3
4
5
6
7
8
9
10
11
12
13
14
IC201
JW021
S215
S214
JW047
S239
JW050
JW028
JW044
JW042
JW043
JW010
JW022
JW029
JW049
JW019
R243
JW033
JW012
JW009
JW008
JW014
JW011
JW031
JW039
JW040
JW037
JW002
R262
R294
JW013
R295
R244
JW020
JW046
CN1
JW004
R274
JW007
R275
JW018
JW005
JW006
R237
JW048
JW035
JW001
JW026
JW034
JW038
JW036
JW025
JW045
JW003
C205
R293
JW032
JW023
JW041
C202
CN2
RV201
S223
S212
S213
S208
S209
S210
S211
S204
S205
S206
S207
S221
S216
S219
S218
S217
S220
S231
S226
S225
S224
S237
S233
S234
S232
S235
S236
S238
S229
S228
S230
IC202
C207
R291
R260
R307
R310
R229
R309
R272
R296
R248
R302
R249
R238
R286
S222
R269
R264
R287
R263
R268
R233
R232
R253
R254
R270
R292
R247
R261
R279
D204
R308
R278
C219
R277
Q201
D201
S227
R283
R271
D203
R284
Q202
R276
R236
R257
R234
R265
R235
C206
C212
R288
R282
C214
C215
C218
C204
X201
R245
C222
R281
R251
R252
R250
R255
Q206
R280
R273
C203
R301
R246
R258
C209
R241
R299
C211
C210
C208
R231
R285
R306
C221
C213
R240
R230
R239
R266
R300
R259
D202
R256
R267
R228
FL201
CN6
TP3
TP4
R227
JW015
JW016
JW017
C225
C226
R311
R303
JW030
C216
R242
JW027
R298
L201
C217
JW051
(Page 14)
(Page 14)
(Page 20)
D201
D-3
D202
D-2
D203
B-10
D204
C-11
IC201
D-6
IC202
D-1
Q201
C-11
Q202
C-11
Q206
C-11
• Semiconductor
Location
Ref. No.
Location
STR-DE185
20
20
IC401 BD3861FS
• IC Block Diagrams
IC601 µPC2581V-S
4-11. PRINTED WIRING BOARD — POWER SW SECTION —
• Refer to page 11 for Circuit Boards Location and
page 15 for Common Note on Printed Wiring Boards.
1
VIDEO1 L
25k
25k
2
VIDEO1 R
25k
25k
3
VIDEO2 L
25k
25k
4
VIDEO2 R
25k
25k
5
MD L
25k
25k
6
MD R
25k
25k
7
CD L
25k
25k
8
CD R
25k
25k
9
TUNER L
25k
25k
10
TUNER R
25k
25k
11
MIC
12k
24k
100k
VCC/2
12
FIL
13
GND
14
DATA
15
CLK
16
VCC
28 TRE L
27 TRE R
26 MID2 R
25 MID1 R
24 MID2 L
23 MID1 L
22 BAS2 L
21 BAS1 L
20 OUT L
19 BAS2 R
18 BAS1 R
17 OUT R
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
31 REC R
32 REC L
30 VOL R
29 VOL L
TREBLE L
fc=10kHz
VCC/2
0dB to -59dB
0dB to -70dB
0dB to -70dB
VCC/2
0dB to -59dB
TREBLE R
fc=10kHz
MIDDLE R
f
0
=1kHz
MIDDLE L
f
0
=1kHz
BASS L
f
0
=90Hz
BASS R
f
0
=90Hz
LOGIC
2
3
5
4
6
7
9
8
1
MUTE
+ VOUT1
–
VOUT1
COMP1
NF1
IN1
GND
IN2
NF2
COMP2
–
VOUT2
+ VOUT2
VCC1
VCC2
VEE
PROTECTOR
BIAS CIRCUIT
REG
DRIVE
PRE
DRIVE
11
10
12
13
15
14
DRIVE
PRE
DRIVE
1
VSS
2
L OUT
3
L IN
L-CH DATA LATCH
CIRCUIT
LEVEL SHIFT
CIRCUIT
4
NC
5
A-GND
6
CS1
7
GND
8
CLK
16 VDD
15 R OUT
14 R IN
13 NC
12 A-GND
11 CS2
10 STB
9 DATA
R-CH DATA LATCH
CIRCUIT
LEVEL SHIFT
CIRCUIT
SHIFT
REGISTOR
(13bit)
STROBE
GENERATOR
CIRCUIT
1
2
3
4
5
6
7
8
V+
VSB/SESIN
VSA
RESET
GND
OUTC
VSC
CR
VREF
+
–
–
+
–
+
–
+
Q
R
S
IC402 TC9299P
IC901 NJM2103D
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
S201
CNP2
D206
D205
S203
S202
Q204
R297
Q205
JW202
R290
R289
TP2
(Page 19)
D205
C-1
D206
B-1
Q204
E-2
Q205
E-3
• Semiconductor
Location
Ref. No.
Location
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