STR-DE185
4-3. BLOCK DIAGRAM — MAIN SECTION —
TM301
ANTENNA
FM 75Ω
COAXIAL
AM
FM/AM TUNER UNIT
STEREO
FM SIGNAL
RDS DATA
RDS INT
AEP,UK
MODEL
10V
L CH
R CH
TUNED
MUTE
OUT
3.3V
+10V
R CH
STEREO
TUNED
MUTE
+10V
CE
DI
DO
CL
CE
DI
DO
CL
FM SG OUT
RDS DATA
RDS INT
+3.3V
3
1
REG
IC904
VIDEO,MD/TAPE
SOUND CONTROL
IC401
TUNER
L
9
J801 (1/2)
-1
L
INCD
-2
R
-5
L
INMD/TAPE
-6
R
J802 (1/2)
-1
L
AUDIO INVIDEO 2
-2
R
-5
L
AUDIO INVIDEO 1
-6
R
R-CH
R-CH
R-CH
R-CH
CD L
7
MD L
5
VIDEO 2
3
VIDEO 1
1
REC L
VOL L
TREBLE
L
MIDDLE
L
BASS
L
OUT L
CONTROL
CLK
32 3 1 1 2
29
20 3 2
DATA
AUDIO AMP
IC403
ELECTRONIC
VOLUME
IC402
L
IN
VOLUME
CONTROL
CLK
DATA
8 9 1015 14
STB
L
OUT
SELECT
IC404
4 3
13 5
Q474
INV.
Q424
INV.
R-CH
R-CH
J801 (2/2)
J802 (2/2)
-3
L
-4
R
-3
L
-4
R
OUT
AUDIO OUT
ST-L
ST-RR-CH
MD/TAPE
VIDEO 1
LED
DRIVER
Q206
D203
BASS
BOOST
BASS B.LED
DI
CE
CL
DO
MUTE
TUNED
STEREO
RDS INT
RDS DATA
FM SG OUT
15 46 19 18 50 12 10 11 9 13 37 36
TUNED
STEREO
RDS INT
RDS DATA
FM SIGNAL OUT
VOL A
VOL B
3853 39
1 3
RV201
MASTER VOLUME
DI
CE
DO
TUNER MUTE
X1
X2
35
X201
4.19MHz
CL
SIRCS
49 71 2877 - 72,70 - 62 7 - 1,80 - 78 27 26 25 24 44 23 54 1734
1
REMOTE
CONTROL
RECEIVER
IC202
I
VLOAD
-24V F1 F2
DIG1
DIG10
FLUORESCENT
INDICATOR
FL201
TUBE
1422
VOL CL
VOL DATA
SYSTEM CONTROLLER,
FL DRIVER
IC201
I
S1
S15
AD1
AD2
KEY MATRIX
S204-239
AD3
AD4
AD5
41 42 43
CK
STB
DATA
SYS.POWER
AD6
S201 S202 S203
I
/
I
AB
SPEAKERS
SPK A LED
LED
DRIVER
Q204
D205 D206
AB
SPEAKERS
REC SW2
55
LED
DRIVER
Q205
REC SW1
SPK B LED
AC MUTE
RY HP
RY A
RY B
PROTECTOR
RY R1 COIL
RY POWER
STOP
RESET
45
60
58
59
16
56
57
47
RESET
SWITCH
Q201,202
1
AC MUTE
HP RELAY
SPK A RELAY
SPK B RELAY
PROTECTOR SIG
R1 COIL RELAY
POWER RELAY
STOP SIGNAL
• Signal path
: FM/AM
: MD/TAPE
: VIDEO 1
: CD
: VIDEO 2
• R-ch is omitted due to
same as L-ch.
POWER
SECTION
(Page 13)
1212
4-4. BLOCK DIAGRAM — POWER SECTION —
STR-DE185
MAIN
SECTION
(Page 12)
1
ST-L
ST-R
AC MUTE
HP RELAY
SPK A RELAY
SPK B RELAY
PROTECTOR SIG
R1 COIL RELAY
R-CH
INV.
Q681
+B
MUTE CONTROL
Q680
RY783
R-CH
R-CH
R-CH
J803
PHONES
L
R
L
R
A
SPEAKERS
IMPEDANCE
USE 8-16Ω
B
TM801
PRE DRIVER
IC601
PRE
DRIVE
IN 1
6
DRIVE
BIAS
MUTE
1 13 14 15
+VOUT
2
-VOUT
3
VCC1
VCC2
VEE
-B
+B
+B
-B
POWER AMP
Q701-704
OVERLOAD
DET
Q705,706
R-CH
PROTECT
SWITCH
Q784-786
RELAY DRIVER
Q903
RECT
D907
D786
D787
D789
RELAY DRIVER
RELAY DRIVER
RELAY DRIVER
RY981
Q781
Q782
Q783
T901
POWER
TRANSFORMER
RY781
RY782
POWER RELAY
STOP SIGNAL
-24V
+5V
+10V
+5.6V
-24V
REG
Q904
+5V REG
3 1
IC902
+10V REG
3 1
IC903
+5.6V
REG
Q902
OUT C V+
8
RESET
VSA
2
VSC
RESET/+5.6V REG
IC901
RELAY DRIVER
Q901
53
VSB/SESIN
RECT
D908-911
F2
RY982
RECT
D901-904
67
F2
D905 D906
T902
POWER
TRANSFORMER
F902
F901
• Signal path
: FM/AM
CNJ901
AC
OUTLET
SWITCHED 120W/1A MAX
AC 120V 60 Hz (US)
SWITCHED 100W MAX
(AEP,UK)
~
AC IN
• R-ch is omitted due to
same as L-ch.
13 13
STR-DE185
4-5. PRINTED WIRING BOARD — MAIN SECTION — • Refer to page 11 for Circuit Boards Location and page 15 for Common Note on Printed Wiring Boards.
A
B
C
D
E
F
1
301
TM
IC904
C927
C926
R922
234567891011121314
R921
J801
400
R451
C454 C404
C402
C452
435
436
437
438
JW
JW
JW
R925
R924
434
JW
CN4
JW
442
443
441
JW
JW
JW
R481
C931
R452
R920
R482
CN3
R919
R402
R475
R425
JW422
R426
C476
R476
C470
C472
R465
C464
C465
C484
C607
CC453
R463
R466
C490
C422
420
JW
R403
440
JW
R926
C426
C463
C483
423
JW
R605
R468
CC403
C420
R418
C471
517
JW
R415
R467
446
JW
CC455
C456
IC401
C415
C414
C421
C485
R455
R655
R456
JW410
C413
R416
R417
C657
R454
R404
R453
R401
CC401
CC451
CC405
R406
R413
IC402
R405
C406
C467
C466
C468
C417
C416
R414
424
JW
C469
409
JW
C701
JW
408
JW
JW425
Q703
R704
C702
CC457
407
JW
419
JW
R464
C418
R483
C458
406
JW
418
JW
R457
R484
502
JW
427
JW
C424
R458
C419
R485
447
JW
414
JW
D914
448
JW
J802
C408
R702
R703
Q702
R408
503
JW
501
JW
R407
R701
R460
CC407
C460 C410
405
JW
417
415
JW
JW
Q424
R424
520
JW
C474
JW426
JW428
JW429
JW431
JW430
R681
Q680
Q701
R459
R427
Q681
C682
R706
R705
C703
R410
Q474
R471
Q704
CC459
R472
R409
IC404
R474
IC403
CC409
R462
516
JW
416
JW
R604
R697
JW519
JW444
JW451
JW450
C462
C928
C606
C604
R461
R421
CC461
R478
C602
JW453
R708
JW449
R411
JW504
R423
R473
R602
R477
R422
CC411
C782
R789
C601
C603
505
JW
C412
R428
C475
IC601
R603
C425
Q705
494
JW
C652
C925
R412
R713
R788
R652
R709
C705
C924
C651
C704
IC903
786
Q
R653
R707
R714
L701
C781
C654
R712
D788
JW506
R790
D785
D784
C656
Q706
RY783
Q785
C653
R711
TM801
490
JW
C922
C918
C923
T902
F901
F902
JW491
CN5
TP1
D789
492
493
JW
JW
(Page 19)
(Page 15)
C791
CNP901
CNP906
CNP905
R915
C917
C916
B901
D911
D909
D910
D908
EP901
903
R
(Page 15)
T901
D982
RY982
TP5
CNP904
498
R786
R787
495
JW
JW
RR752
CC753
CC703
RR702
479
JW
D783
R762
C755
R764
R763
Q784
D701
R794
R654
C930
C929
515
JW456
JW
R929
H2
518
JW
JW
461
JW
R710
JW482
RY782
R795
R785
L751
D751
CC704
JW481
JW480
JW508
CC754
D782
JWH1
484
514
513
JW
JW
JW
496
JW
JW455
R930
JW472
H3
JW465
JW
JW466
C752
JW457
JW467
JW459
JW464
JW460
JW463
JW462
507
JW
R761
R760
C914
R759
C751
R754
Q753
C915
Q755
JW468
469
JW
470
JW
R756
R751
R757
R752
R753
Q752
JW509
Q756
C754
Q751
JW511
JW510
RR751
CC752
CC751
CC702
CC701
476
JW
D907
475
JW
474
473
JW
JW
R916
C919
D912
R923
C920
R758
783
C753
Q
JW471
Q754
755
R
RR701
C913
C912
782
Q
R901
R783
478
JW
4
R90
Q904
R917
JW445
R782
904
D
Q901
911
R
RY981
D787
C909
R907
R909
D786
D903
C910
R912
R910
485
JW
C902
R908
D981
D905
C908
IC901
477
JW
D781
RY781
906
D
C905
R784
901
C
C906
R905
C903
R913
R906
NP903
C
Q903
D901
JW488
Q781
D913
500
JW
D902
Q902
486
C907
JW
C904
JW489
C921
R781
R914
R792
R902
499
JW
911
C
IC902
R793
487
JW
CNP802
G
(Page 19)
• Semiconductor Location
Ref. No. Location
D701 E-7
D751 E-7
D781 E-10
D782 C-8
D783 C-7
D784 E-7
D785 E-7
D786 F-10
D787 F-10
D788 D-7
D789 E-12
D901 B-10
D902 B-11
D903 B-10
D904 B-10
D905 B-10
( ) : AEP, UK model
Ref. No. Location Ref. No. Location Ref. No. Location
D906 B-10
D907 D-9
D908 E-13
D909 D-13
D910 E-13
D911 D-13
D912 E-9
D913 E-11
D914 D-5
D981 E-10
D982 B-12
IC401 C-4
IC402 E-4
IC403 D-6
IC404 C-6
IC601 E-6
IC901 C-10
IC902 D-11
IC903 B-7
(IC904) E-1
Q424 D-5
Q474 D-5
Q680 F-5
Q681 E-5
Q701 F-5
Q702 G-5
Q703 G-4
Q704 G-6
Q705 F-6
Q706 F-7
Q751 G-9
Q752 G-9
Q753 G-8
Q754 G-9
Q755 F-8
Q756 E-9
Q781 E-10
Q782 F-9
Q783 F-9
Q784 D-7
Q785 D-7
Q786 E-6
Q901 B-10
Q902 C-11
Q903 E-10
Q904 E-10
1414
STR-DE185
4-6. PRINTED WIRING BOARDS — H/P, OUTLET SECTION — • Refer to page 11 for Circuit Boards Location.
1
234567
A
CNP801
B
(Page 14)
C
D
J803
E
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
f
•
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
• A : B+ Line.
• B : B– Line.
• Voltage and waveforms are dc with respect to ground
• Voltages are taken with a VOM (Input impedance 10 MΩ).
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
for printed wiring boards:
• X : parts extracted from the component side.
•
• : Pattern from the side which enables seeing.
: internal component.
with mark 0 are critical for safety.
Replace only with part number specified.
under no-signal (detuned) conditions.
no mark : FM
Voltage variations may be noted due to normal production tolerances.
Voltage variations may be noted due to normal production tolerances.
F : FM/AM
L : MD/TAPE
g : VIDEO 1
J : CD
c : VIDEO 2
f
: internal component.
4
W or less unless otherwise
F
G
H
I
J
CNP907
(Page 14)
CNJ901
15 15
STR-DE185
4-7. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 15 for Common Note on Schematic Diagram and page 20 for IC Block Diagrams.
R481
R482
IC B/D
IC401
R926
C463
C413
C464
C465
C414
C415
C416
C417
C466
C467
C468
C418
C419
C469
R463
R413
R414
R464
C484
R465
R466
R415
R416
C485
C470
IC402
C420
J801
J802
CC451
CC401
CC453
CC403
CC455
CC405
CC457
CC407
R451 R452
R402R401
R453
R454
R403
R404
R455 R456
R406R405
R457 R458
R408R407
C452
C402
C454
C404
C456
C406
C458
C408
R476
R426
C483
C476
C426
C490
C421
C422
R417
C471
C472
R467
R468R418
TM301
CN3
CN4
CC459
CC409
CC461
CC411
R459
R460
R409
R410
R461 R462
R411 R412
C460
C410
C462
C412
R921
R922
R475 R425
R919
R920
C931
C927
IC904
C926
R477R478
IC B/D
R427
R428
R474
Q474 Q424
IC404
R424
R485
R484
R483
R422
R423
C424
R421
C425
R472
R473
IC403
C475
(Page 17)
C474
R471
C928
D914
(Page 18)
R925
R924
IC903
(Page 17)
C925
C924
1616
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.
STR-DE185
(Page
16)
R655C657
C607 R605
C651
C601
R652
R602
Q680
Q681
C652
C602
R681
R697
C682
C603
R604
R603
C606
C604
IC B/D
IC601
C654
R654
C653
R653
C929 C930
C656
R929
R930
C701
C751
Q702
Q752
Q701
Q751
R701
R703
R753
R751
R705
R755
R704
C703
C753
R754
C752
R702
R752
C702
R706
R756
Q753
Q703
R707
Q704
Q754
R757
R708
R758
C704
C754
Q706
Q756
R709
R710
R760
R759
Q705
D701
D751
Q755
R711
R761
C705
R712
R762
C755
L701
R714
R713
R763
R764
L751
R790
D784 D785
Q784
R784
R785
R795
R789
R794
C782
C781
RY781
RY782
D782
RY783
D783
D781
Q786
R788
Q785
Q782
Q781
Q783
R782
R783
R792
R793
R781
R786
R787
D787D786
D788D789
CNP802
CNP801
J803
RR701 CC701 CC702
RR751 CC751 CC752
TM801
RR702 CC703 CC704
RR752 CC753 CC754
(Page 18)
(Page 16)
CN5
C923
R912
C910
C911 C791
IC902
R911
C909
C922
D913
R923
R910
C908
C920
C921
IC B/D
IC901
R909
Q904
C919
R907
R908
D912
R917
R916
Q902
C906
C903C904
C918
R906
R905
C907
C905
C914
C915
D905
D901
D902
D903
D904
D908D909
D910D911
R904
R901
D907
R913
D906
C916
C917
C912
C913
R915
Q901
C901
C902
R914
Q903
T902
RY981
D981
R902
CNP903
CNP904
RY982
D982
F902
F901
R903
CNP905
CNP906
CNP901
T901
CNJ901
CNP907
EP901
17 17
B901
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
STR-DE185
4-9. SCHEMATIC DIAGRAM — DISPLAY SECTION — • Refer to page 15 for Common Note on Schematic Diagram.
(Page 16)
C225
C205
C204
R241
C206
R228R227
C202
R249
C217 C218
FL201
CN1
R242
R311
R237
R293
R294
R295
C203
R238
R231
R232
R233
R234
R235
R236
C222
R239
R240
C221
R244
R243
C207
R245
C208
R246
C209
R247
C210
R248
C226
IC201
X201
R250
R273
R252
R253
R254
C211
C212
R302
R292
R296
R299
R300
R301
RV201
R306
R307
R291
R308
C216
R309
R288
R229
R310
R303
R230
C215
C214
C213
R255
IC202
R298
CN6
R251
CNP2
D201
D202
Q206
D203
S201
L201
S202
CN2
R297
S203
R289
D205 D206
Q204 Q205
(Page 17)
R290
Q202
C219
Q201
D204
R256 R257 R258 R259 R260 R261
S232 S233 S234 S235 S236 S237 S238
R265 R266 R267 R268
S224 S225 S226 S227 S228 S229 S230 S231
R276R275R274
R282
S216 S217
R272R264
S212 S213
S214 S215
R281
S204 S205 S206 S207 S208 S209 S210 S211
R263
S222 S223
R277
R269 R270 R271
R278
S218
S219 S220 S221
R262
R287R286R285R284R283
S239
R280R279
1818
• Waveform
2V/div 0.2µsec/div
1
IC201
4.19MHz
eg
5.4Vp-p
(X2)
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.
STR-DE185
A
B
C
D
E
1
TP4
JW003
R272
R264
R263
JW005
JW004
IC202
CN6
234567891011121314
S213
S212
S223
S222
JW006
JW007
R229
JW002
R285
R286
R287
JW008
JW009
R303
R230
C214
C215
S208
S210
CN2
S209
S211
R288
D202
R284
R283
R282
R281
D201
L201
S207
S206
S205
S204
JW051
R306
R227
R280
JW011
R307
R308
JW001
R309
JW010
S221
S215
S214
R274
R310
C217
R275
JW012
JW014
R276
JW017
JW016
JW015
S217
R277
S216
JW013
JW018
C226
R278
S219
S218
JW019
C225
FL201
R298
R255
C213
JW020
R295
JW021
JW022
R296
JW026
JW025
IC201
R279
R271
R302
C212
C211
JW023
S220
S231
R270
R238
R253
R254
JW032
X201
S230
R292
R250
JW027
R291
R247
R248
R246
R269
R268
R245
C204
JW033
C210
C203
R241
S229
S228
R267
JW034
C209
C208
JW029
R293
S227
JW035
JW036
C207
C216
JW028
C218
R228
JW037
JW030
JW038
R249
C206
C202
JW031
R244
JW040
JW039
R243
C205
R266
R294
R237
R236
R235
R234
R233
R232
R231
R265
C222
S226
S225
S224
R239
R240
C221
JW048
JW047
JW041
JW042
JW043
JW044
R262
R299
R300
R301
R252
R273
JW046
JW045
R242
R251
S239
CN1
S238
D203
R311
JW049
R261
Q206
D204
Q201
Q202
S237
R260
S236
C219
R259
S235
TP3
RV201
JW050
R258
S234
R257
S233
R256
S232
F
(Page 20)
(Page 14)
(Page 14)
• Semiconductor
Location
Ref. No. Location
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
19 19
STR-DE185
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.
• IC Block Diagrams
A
B
C
D
1
D206
23456
• Semiconductor
S203
TP2
Location
Ref. No. Location
D205 C-1
D206 B-1
Q204 E-2
Q205 E-3
VIDEO1 R
VIDEO2 R
R297
S202
D205
IC401 BD3861FS
VIDEO1 L
1
2
VIDEO2 L
3
4
MD L
5
MD R
6
CD L
7
CD R
8
25k 25k
25k 25k
25k 25k
25k 25k
25k 25k
25k 25k
25k 25k
25k 25k
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
VCC/2
0dB to -59dB
0dB to -70dB
0dB to -70dB
TREBLE L
fc=10kHz
TREBLE R
fc=10kHz
MIDDLE R
0
=1kHz
f
MIDDLE L
0
=1kHz
f
BASS L
0
=90Hz
f
32
31
30
29
28
27
26
25
24
23
22
21
20
REC L
REC R
VOL R
VOL L
TRE L
TRE R
MID2 R
MID1 R
MID2 L
MID1 L
BAS2 L
BAS1 L
OUT L
IC402 TC9299P
VSS
1
L OUT
2
L IN
3
NC
4
A-GND
5
CS1
6
GND
7
CLK
8
IC901 NJM2103D
CIRCUIT
L-CH DATA LATCH
SHIFT
REGISTOR
(13bit)
STROBE
CIRCUIT
GENERATOR
LEVEL SHIFT
CIRCUIT
CIRCUIT
R-CH DATA LATCH
CIRCUIT
LEVEL SHIFT
VDD
16
R OUT
15
R IN
14
NC
13
A-GND
12
CS2
11
STB
10
DATA
9
E
F
G
H
Q204
S201
R290
R289
JW202
Q205
CNP2
(Page 19)
TUNER L
9
TUNER R
10
MIC
11
FIL
12
GND
13
DATA
14
CLK
15
VCC
16
IC601 µPC2581V-S
PROTECTOR
25k 25k
25k 25k
100k
VCC/2
LOGIC
12k
24k
VCC/2
BIAS CIRCUIT
0dB to -59dB
BASS R
0
=90Hz
f
19
18
17
BAS2 R
BAS1 R
OUT R
VSC
OUTC
GND
CR
1
2
+
–
3
4
VREF
Q
R S
+
–
8
RESET
+
–
VSA
7
6
VSB/SESIN
V+
5
+
–
4
COMP1
PRE
DRIVE
5
NF1
6
IN1
REG DRIVE
I
1
MUTE
2
+ VOUT1
3
– VOUT1
PRE
DRIVE
GND
IN2
98
NF2
7
10
COMP2
11
DRIVE
– VOUT2
12
+ VOUT2
1514
13
VEE
VCC1
VCC2
J
2020
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