Sony STR-DE185 Service Manual ▷ View online
STR-DE185
13
13
4-4. BLOCK DIAGRAM — POWER SECTION —
6
2
3
DRIVE
POWER AMP
Q701-704
BIAS
MUTE CONTROL
Q680
1
13 14 15
-24V
REG
Q904
+5V REG
IC902
3
1
+10V REG
IC903
3
1
6
7
8
2
5
3
RELAY DRIVER
Q783
RELAY DRIVER
Q903
RELAY DRIVER
Q901
+5.6V
REG
Q902
RELAY DRIVER
Q782
RELAY DRIVER
Q781
+B
-B
-24V
+5V
+10V
+5.6V
OUT C
V+
RESET
VSA
VSC
RESET/+5.6V REG
IC901
VSB/SESIN
F2
F2
RY982
F901
F902
RY981
RY781
R-CH
RY782
RY783
RECT
D901-904
RECT
D908-911
RECT
D907
D907
T901
POWER
TRANSFORMER
T902
POWER
TRANSFORMER
D905
D906
CNJ901
AC
OUTLET
SWITCHED 120W/1A MAX
AC 120V 60 Hz
(US)
SWITCHED 100W MAX
(AEP,UK)
~
AC IN
+B
-B
+B
MUTE
VCC1
VCC2
VEE
PRE DRIVER
IC601
PRE
DRIVE
IN 1
+VOUT
-VOUT
OVERLOAD
DET
Q705,706
PROTECT
SWITCH
Q784-786
R-CH
J803
PHONES
TM801
SPEAKERS
IMPEDANCE
USE 8-16
Ω
L
R
A
L
R
B
R-CH
R-CH
ST-L
ST-R
INV.
Q681
AC MUTE
HP RELAY
SPK A RELAY
SPK B RELAY
PROTECTOR SIG
R1 COIL RELAY
POWER RELAY
STOP SIGNAL
R-CH
MAIN
SECTION
1
D786
D787
D789
• Signal path
: FM/AM
• R-ch is omitted due to
same as L-ch.
same as L-ch.
(Page 12)
STR-DE185
14
14
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.
1
A
B
C
D
E
F
G
2
3
4
5
6
7
8
9
10
11
12
13
14
IC401
Q754
Q753
R
755
Q706
CC403
R762
IC902
JW
486
C413
C419
JW
448
Q701
R702
R654
R763
R713
R453
R456
C905
C912
Q752
C929
IC402
R454
IC901
Q704
R403
R902
RY981
D784
F902
C906
RY982
R
903
R905
C903
D905
Q703
Q702
R711
C424
R790
R709
C604
C603
R753
CN3
CC455
R455
R467
R458
CC407
C910
CC457
CC753
C704
JW471
R407
C930
C924
R701
CNP901
R707
R907
R910
CC411
R408
R459
CC409
R460
R409
CC461
R410
R461
R412
R462
C454
C404
C456
C406
C458
C408
C460
C410
C462
C412
R423
C425
Q474
Q424
C472
C422
C931
R421
C420
C470
R466
R415
R465
C702
C471
R704
JW
419
JW
485
C421
R418
R789
RR752
R764
D788
R714
D783
Q
782
R783
R710
CC703
C913
CNP904
CNP802
D781
C782
D981
Q901
D787
JW491
Q903
Q781
CN5
R90
4
C923
C922
JW
477
D785
JW
500
D909
D910
D911
T901
D908
C781
RR702
CN4
D786
R917
C917
C920
C919
C921
D912
D913
JW
474
JW
418
R452
R402
C474
JW
415
R473
C475
R406
IC903
R404
C607
C908
JW481
IC904
JW
447
JW
469
C701
C751
R792
R793
R697
C463
Q681
Q680
R681
R603
R463
C652
R652
C651
R653
C657
R655
R414
R788
R605
C402
JW
478
IC404
C601
JW430
R468
JW
476
C
NP903
Q902
Q705
R929
C902
R916
JW
470
JW488
JW
493
JW489
RY783
JW
501
C468
R411
R908
JW
495
JW
400
D
906
JW
498
JW
487
JW
499
C904
Q904
Q751
JW422
R919
R920
CC453
L701
R754
CC754
JW
406
JW
492
R705
JW451
JW506
R413
C754
IC403
R906
C469
R757
C418
R451
TM301
JW
414
C755
R604
R401
CC401
RY782
D901
C909
C703
R909
C705
R912
C483
C
901
C753
JW
475
D902
R751
R752
R464
RY781
R706
Q785
R
911
R756
C752
D903
CC451
D
904
C452
C
911
IC601
C907
R481
D982
R703
J801
JW456
JW428
CC459
D907
CC702
CC701
CC751
CC752
JW480
R901
JW509
JW510
JW511
JW
409
JW
408
JW
407
TM801
T902
R425
R475
JW
438
JW
437
JW
436
JW
435
CC704
JW482
JW426
R483
R484
R485
JW
441
JW
416
R457
JW504
JW
505
JW
417
JW
405
R758
Q784
Q
786
L751
B901
C682
C606
C656
C914
C915
JW
473
R471
R472
JW450
R708
JW
461
R759
D782
JW465
JW466
JW449
JW
502
JW
503
JW
515
JW
446
JW
443
JW
442
JW
H3
TP1
C467
C466
C417
C416
C415
C414
JW425
R417
R474
JW
424
JW
423
C465
C464
R924
R926
C653
C654
C485
D914
R925
JW
434
Q755
Q756
JW
427
CNP905
CNP906
C426
C476
C490
R476
R426
R482
JW
440
JW410
R416
JW
520
R424
C484
JW
517
C928
C926
C927
R922
R921
C602
R602
JW472
R930
JW519
JW453
JW444
JW
507
JWH1
RR751
RR701
JW508
JW
479
R923
C791
F901
J802
JW468
JW464
JW459
JW460
JW463
JW462
Q
783
JW431
JW429
TP5
R795
R785
JW
484
JW
513
JW
514
R782
JW467
R913
R784
R914
R781
D789
R786
R787
JW445
JW
H2
R712
JW455
R761
R760
C925
JW
516
R915
C916
JW
490
JW
496
D751
D701
R794
JW457
R477
R428
JW
494
R478
R422
JW
518
R427
R405
CC405
JW
420
C918
EP901
(Page 19)
(Page 19)
(Page 15)
(Page 15)
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
• Semiconductor 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
Ref. No.
Location
Ref. No.
Location
Ref. No.
Location
(
) : AEP, UK model
STR-DE185
15
15
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
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
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
• 1 : fusible resistor.
• C : panel designation.
• A : B+ Line.
• B : B– Line.
• Voltage and waveforms are dc with respect to ground
• B : B– Line.
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
no mark : FM
• Voltages are taken with a VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM/AM
L
: MD/TAPE
g : VIDEO 1
J
J
: CD
c
: VIDEO 2
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.
for printed wiring boards:
• X : parts extracted from the component side.
•
• X : parts extracted from the component side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
4-6. PRINTED WIRING BOARDS — H/P, OUTLET SECTION — • Refer to page 11 for Circuit Boards Location.
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
CNP801
J803
CNJ901
CNP907
(Page 14)
(Page 14)
STR-DE185
16
16
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.
IC B/D
IC B/D
C418
C468
D914
IC402
R415
R416
R424
R465
R466
R474
R481
R482
R483
R484
R485
R422
R423
R473
R472
R414
R464
R451 R452
R402
R401
R453
R455 R456
R403
R406
R405
R457 R458
R408
R407
R459
R409
R461 R462
R411 R412
R926
R467
R468
R418
R417
R460
R410
R427
R428
R421
C456
C406
C490
C458
C408
C462
C412
C476
C426
C931
C924
C425
C421
C467
C466
C417
C416
C415
C464
C463
C465
C485
C470
C420
C471
C402
C452
C483
R426
R476
R475
R425
R925
R924
R921
R922
R920
C413
C414
R413
R463
R477
R478
C475
R471
C928
C472
R919
CN3
CN4
IC904
C927
C926
IC903
J801
J802
CC451
CC401
CC453
CC403
CC455
CC405
CC457
CC407
CC459
CC409
CC461
CC411
R454
R404
C454
C404
C460
C410
TM301
IC404
C424
IC403
C474
C422
C469
C419
C484
C925
IC401
Q474
Q424
(Page 18)
(Page 17)
(Page 17)
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