Schematic Diagram - Main Board (2/3) - Sony STR-DB1070 - Fm Stereo/fm-am Receiver Service Manual

STR-DB870/DB1070
5-15. SCHEMATIC DIAGRAM – MAIN Board (2/3) – •
Q811
2SA988TP-P
MUTING
DRIVE
1A
POWER AMP
IC503
PC2581V
R507
22k
C506
R508 C504 33p
1k 22 50V 500V
(Page
J2
J1
27)
R558 C554
1k 22
C508
50V
4p
500V
R511
R510
68k
2.7k
C505
220p
2A
R509 R559 C509
68k 68k 220
10V
POWER AMP
IC403
PC2581V
R407
22k
C406
R408 C404
33p
1k 22 50V
J3 500V
J4
R458 C454
1k 22
C408
50V
4p
500V
R411
R410 68k
2.7k
C409
C405
220
220p
10V
C417
100p
50V
IC603
PC2581V
POWER AMP
C656
R607
33p
22k
500V
(DB1070)
R658 C654 C660
1k 22 50V 100p
J6
J5
R608 C604
1k 22 C658
50V 4p
500V
R661
R660
68k
2.7k
C659
220
10V
C617
100p
50V
JW707
JW706
(DB870)
See page 38 for IC Block Diagrams.
(Page 31)
R864
47k
Q812
BA1F4M-TP
MUTING
ON/OFF
C811
22
100V
R563
100
C556
33p
500V
C558
4p
500V
R561
68k
* Q402,452,502,552,602
MN2488 (DB870)
2SD2560 (DB1070)
C517 C559
100p 220
50V 10V
C461
22p
500V
R462
100
C456
33p
500V
R463
100
C458
4p
500V
C462
22p
R461 500V
R460
68k
2.7k
C459
220
10V C411
22p
500V
R412
100
R414
0.22X2
5W
JW702 (DB870)
C606 R413
33p 100
500V
Q403
C608
*
4p
BOOSTER
500V
C412
R611
22p
68k
500V
R610
2.7k
C609
220
10V
CN450 CN400
7P 7P
(Page 31)
(Page 31)
(Page 31)
CN550 CN500
7P 7P
C561
22p
500V C511
22p
500V Q502
Q552 *
BOOSTER
*
R562 BOOSTER R512
100 100
L551
R564 R514
0.22X2 0.22X2
5W 5W
R573
10 R517
R513
100
C514
R567
0.068
10
Q503
Q553 C512
* C520
C564 22p
*
BOOSTER 0.068
BOOSTER 0.068 500V
C562
22p
500V
C568
0.068
C810
22
100V
Q806
2SC1815YGR
C809 * R809
22 OVER LOAD DETECT
* Q403,453,503,553,603 330 2W (US,CND)
100V
MP1620 (DB870) 150 2W (AEP,UK)
2SB1647 (DB1070) 470 2W (E,CH) R811
R809
1 R835
*
100k
L451
C611
22p
500V
Q452 Q602
* *
BOOSTER BOOSTER
R473 R612
10 100
R464 R614
0.22X2 0.22X2
5W 5W
R467
10
R617
R613
Q453 C464
100
* 0.068 C614
BOOSTER 0.068
C612
C620
C457 22p Q603
0.068
0.068 500V *
BOOSTER
C661
22p
500V
Q652
2SD2560
BOOSTER
R662
100
Q402
*
BOOSTER
R664
0.22X2
5W
R673
L401
R667
R663 C664
R423
100 0.068
10
Q653
2SB1647 C668
C662
R417 0.068
22p BOOSTER
10
500V
C414
0.068
C407
0.068
CN600
7P
(Page 31)
(Page 31)
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
28 28
H2
RY806
-1
-2
R849
10
R847
D814
4.7k
1SS133T-72
H3 Q823
2SC2785TP-
R848
L501
10k RELAY DRIVE
R523
10
10
-1
RY801
-2
D809
1SS133T-72
R810
1
R812 R820
4.7k 10
H4
Q807
2SC2785TP-
R816
RELAY DRIVE
10k
R808
22k
RY803
-1
-2
D811
1SS133T-72
R814 R822
4.7k 10
H5
Q809
L601 2SC2785TP-
R818 RELAY DRIVE
R623 10k
10
10
(DB1070)
GP801
GND PLEATE
L651
10
10
Q824
2SC1815YGR
+5V
REGULATOR +15V
REGULATOR
C815 C801
C814
100 470
100
16V 25V
16V
H1
C802
470 M5F7915L
25V
-15V
REGULATOR
CN650
7P
(Page 29)
Les composants identifiés par une marque 0 sont
critiques pour la sécurité. Ne les remplacer que
par une pièce portant le numéro spécifié.
HP-CONT
H.P GND
H.P R
R825
470
1W
H.P L
(Page 35)
R824
CN801
470
5P
1W
CN502
1P
CN552
1P
CN553
2P
(CHASSIS)
C557 C507
100p 100p
(CHASSIS)
R
SURROUND
L
TM501
SPEAKERS
IMPEDANCE
CENTER
USE 4-6
SURROUND BACK
(CHASSIS)
(CHASSIS)
(Page 35)
CN803
C657 C607
4P
100p 100p
R
(DB1070)
GND
GND
L
CN802
4P
+B
CT GND
B GND
-B
(Page 37)
CN804
O I 7P
G
+24V
24V(RY)
IC801
M5F7815L
RY GND
GND
GND
-24V
(Page 37)
FL GND
C803
0.47
SENSOUT
PROTECTOUT
-B
GND
+15V
IC802 C804
0.47
-15V (Page 31)
G CN809
O I 6P