Schematic Diagram - Main Board (2/3) - Sony STR-DE1075 Service Manual

STR-DE1075
5-21. SCHEMATIC DIAGRAM – MAIN Board (2/3) – •
Q811
2SA988TP-P
MUTING
DRIVE
1A
POWER AMP
IC503
µPC2581V
R507
22k
C506
R508 C504 33p
1k 22 50V 500V
(Page
J2
J1
31)
R558 C554
1k 22
C508
50V
4p
500V
R511
R510
2.7k
C505
220p
2A
R509 R559 C509
68k 68k 220
10V
POWER AMP
IC403
µPC2581V
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
µPC2581V
POWER AMP
C656
R607
33p
22k
500V
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
See page 42 for IC Block Diagrams.
(Page 35)
R864
47k
Q812
BA1F4M-TP
MUTING
ON/OFF
C811
22
100V
R563
100
C556
33p
500V
C558
4p
500V
R561
68k
R560
2.7k
68k
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
C606 R413
33p 100
500V
Q403
C608
2SB1647
4p
500V BOOSTER
R611 C412
68k 22p
500V
R610
2.7k
C609
220
10V
CN450 CN400
7P 7P
(Page 35) (Page 35)
(Page 35)
CN550 CN500
7P 7P
C561
22p
500V C511
22p
500V Q502
Q552 2SD2560
2SD2560
BOOSTER
R562 R512
BOOSTER
100 100
L551
R564 R514
0.22X2 0.22X2
5W 5W
R573
10 R517
Q553
2SB1647 R513
100
BOOSTER C514
R567
0.068
10
Q503
C512 2SB1647
C520
C564 22p
BOOSTER 0.068
0.068 500V
C562
22p
500V
C568
0.068
C810
22
100V
Q806
2SC1815YGR
C809
22 * R809 OVER LOAD DETECT
100V
330 2W (US)
390 2W (CANADIAN)
R811
R809
1 R835
*
100k
L451
C611
22p
500V
Q602
Q452
2SD2560
2SD2560
BOOSTER
BOOSTER
R473 R612
10 100
R464 R614
0.22X2 0.22X2
5W 5W
R467
10
R617
R613
Q453 C464
100
2SB1647 0.068 C614
0.068
BOOSTER
C612
C620
C457 22p Q603
0.068
0.068 500V 2SB1647
BOOSTER
C661
22p
500V
Q652
2SD2560
BOOSTER
R662
100
Q402
2SD2560
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 35) (Page 35)
32 32
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
10k RELAY DRIVE
R808
22k
RY803
-1
-2
D811
1SS133T-72
R814 R822
4.7k 10
H5
Q809
L601 2SC2785TP-
R818 RELAY DRIVE
R623 10k
10
10
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 33)
The components identified by mark 0 or dotted Les composants identifiés par une marque 0 sont
line with mark 0 are critical for safety. critiques pour la sécurité. Ne les remplacer que
Replace only with part number specified. par une pièce portant le numéro spécifié.
HP-CONT
H.P GND
H.P R
R825
470
1W
H.P L
(Page 39)
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 4-6Ω
SURROUND BACK
(CHASSIS)
(CHASSIS)
(Page 39)
CN803
C657 C607
4P
100p 100p
R
GND
GND
L
CN802
4P
+B
CT GND
B GND
-B
(Page 41)
CN804
O I 7P
G
+24V
24V(RY)
IC801
M5F7815L
RY GND
GND
GND
-24V
(Page 41)
FL GND
C803
0.47
SENSOUT
PROTECTOUT
-B
GND
+15V
IC802 C804
0.47
-15V (Page 35)
G CN809
O I 6P