Sony STR-DE185 Service Manual ▷ View online
STR-DE185
11
11
56
RY R1 COIL
O
Power relay (12V) drive signal output
57
RY POWER
O
AC power relay (9V) drive signal output
58
RY A
O
Speakers A relay (12V) drive signal output
59
RY B
O
Speakers B relay (12V) drive signal output
60
RY HP
O
Phones relay (12V) drive signal output
61
NC
—
Not used. (Open)
62 to 70
S15 to 7
O
Segment drive signal output to the fluorescent indicator tube (FL201).
71
VLOAD
—
Power supply pin (-24 V)
72 to 77
S6 to 1
O
Segment drive signal output to the fluorescent indicator tube (FL201).
78 to 80
DIG10 to 8
O
Digit drive signal output to the fluorescent indicator tube (FL201).
Pin No.
Pin Name
I/O
Pin Description
4-2. CIRCUIT BOARDS LOCATION
MAIN board
OUTLET board
POWER SW board
HP board
DISPLAY board
STR-DE185
12
12
4-3. BLOCK DIAGRAM — MAIN SECTION —
9
7
5
3
1
14
22
49
71
28
77 - 72,70 - 62
7 - 1,80 - 78
27
26
25
24
44
23
54
17
34
35
15 46
19 18 50 12 10 11 9
13
37
36
45
60
58
59
16
56
57
47
13
5
41 42 43
32
3
1
1
2
4
3
3
IC904
+10V
1
LED
DRIVER
Q204
LED
DRIVER
Q206
55
LED
DRIVER
Q205
KEY MATRIX
FL201
FLUORESCENT
INDICATOR
TUBE
1
REMOTE
CONTROL
RECEIVER
IC202
29
20
3
2
8 9 10
15
14
38
53
39
1
3
TREBLE
L
MIDDLE
L
BASS
L
CONTROL
VOLUME
CONTROL
FM SG OUT
RDS DATA
RDS INT
STEREO
TUNED
MUTE
CE
DI
DO
CL
FM SIGNAL OUT
RDS DATA
RDS INT
STEREO
TUNED
TUNER MUTE
CE
DO
DI
CL
VOL CL
VOL DATA
CK
DATA
STB
REC SW2
REC SW1
AC MUTE
RY HP
RY A
RY B
RY B
PROTECTOR
RY R1 COIL
RY POWER
STOP
AC MUTE
ST-R
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
ST-L
HP RELAY
SPK A RELAY
RESET
SPK B RELAY
PROTECTOR SIG
R1 COIL RELAY
R1 COIL RELAY
POWER RELAY
STOP SIGNAL
RESET
SWITCH
Q201,202
BASS B.LED
VOL A
VOL B
X1
X2
VLOAD
AD1
AD2
AD3
AD4
AD5
SYS.POWER
AD6
SPK A LED
SPK B LED
DIG1
I
DIG10
S1
I
S15
SIRCS
S201
S202
S203
I
/ I
SPEAKERS
D205
D206
SPEAKERS
A
B
X201
4.19MHz
D203
RV201
MASTER VOLUME
BASS
BOOST
A
B
S204-239
SYSTEM CONTROLLER,
FL DRIVER
IC201
J801 (1/2)
J802 (1/2)
-1
L
-2
R
IN
CD
-5
L
-6
R
IN
MD/TAPE
J801 (2/2)
VIDEO,MD/TAPE
SELECT
IC404
AUDIO AMP
IC403
SOUND CONTROL
IC401
-3
L
-4
R
OUT
MD/TAPE
J802 (2/2)
-3
L
-4
R
AUDIO OUT VIDEO 1
-1
L
-2
R
AUDIO IN
VIDEO 2
-5
L
-6
R
AUDIO IN
VIDEO 1
FM 75
Ω
COAXIAL
AM
ANTENNA
+10V
10V
L CH
R CH
STEREO
TUNED
MUTE
CE
DI
DO
CL
STEREO
TUNED
MUTE
CE
DI
DO
CL
FM SIGNAL
OUT
RDS DATA
RDS INT
FM SG OUT
RDS DATA
RDS INT
3.3V
R CH
+3.3V
REG
-24V
F1 F2
REC L
VOL L
OUT L
TUNER
L
L
CD L
MD L
VIDEO 2
L
IN
IN
L
OUT
OUT
VIDEO 1
CLK
DATA
CLK
STB
DATA
ELECTRONIC
VOLUME
IC402
Q424
INV.
Q474
INV.
TM301
FM/AM TUNER UNIT
AEP,UK
MODEL
MODEL
POWER
SECTION
1
• Signal path
: FM/AM
: MD/TAPE
: VIDEO 1
: CD
: VIDEO 2
• R-ch is omitted due to
same as L-ch.
same as L-ch.
(Page 13)
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
Click on the first or last page to see other STR-DE185 service manuals if exist.