Sony STR-DB900 Service Manual

2525
STR-DB900
STR-DB900
4-13. SCHEMATIC DIAGRAM — AMP BOARD (2/4) —
C378
R331
R333
R336
R330
R332
R357
R454
R455
R456
R492
D321
C405
R349
FB327
FB328
R602
J301
CN315
R414
R485
C554
R543
R544
R347
R346
RY302
R444
R446
R447
R448
R449
R436
R450
R437
R435
R438
R439
R440
R441
R442
R443
FB324
FB325
FB326
L308
10µH
10µH
FB602
R637
R636
C579
C662
C386
C384
C367
C383
C388
C385
C395
C486
C481
C487
R505
R504
C360
D312
C342
R410
IC308
IC326
IC311
IC310
IC309
Q351
Q308
Q350
Q360
Q335
Q334
R348
R355
C413
Q337
C488
C489
C402
Q336
R345
C394
C560
C381
C377
C380
C379
C382
FB320
C376
C371
C307
R468
C374
C387
C482
C483
C543
L309
THP303
R423
D315
CN301
C586
C585
C526
C584
C583
C533
C396
R541
R542
FB307
Q307
C397
C399
C469
R491
Q321
Q322
C406
R352
C549
C401
R334
R337
C485
C398
C400
R339
R343
R338
C391
C390
R484
R483
R422
C493
R511
C538
R397
C403
R559
R335
C480
R320
C370
R503
C372
C373
FB304
R563
IC319
IC328
R350
C476
R340
R342
C389
R396
R395
R394
TM303
FB321
FB322
FB323
FB601
R451
R452
R453
R601
R457
C414
47
63V
330
1/10W
330
1/10W
10
1/10W
330
1/10W
330
1/10W
100
1/10W
47
68
82
220k
1SS352-TPH
1
250V
10k
0UH
0UH
82
1P
25P
100
1/10W
33
100p
10
10
4.7k
1/10W
22k
1/10W
820
1/10W
820
1/10W
270
1/10W
270
1/10W
270
1/10W
270
1/10W
270
1/10W
0
0
100
1/10W
100
1/10W
100
1/10W
33
1/10W
33
1/10W
10
1/10W
0UH
0UH
0UH
0UH
100
1/10W
330
47
25V
47p
27p
27p
0.1
27p
0.1
27p
0.018
0.015
100p
100p
10
1/10W
10
1/10W
0.1
1SS352-TPH
3
0.1
50V
10k
CXD9730Q
TC7WH34FU(
TE12R)
M5218AFP-T
E1
TC74AC08FT
(EL)
TC74AC08FT
(EL)
2SC2712G-T
TEMP DETECT
DTC144EKA-T146
RELAY DRIVER
2SC2712G-T
TEMP DETECT
2SA1162Y-T
I.PROTECT
2SK3669
BOOSTER
2SK3669
BOOSTER
10
1/10W
47k
1/10W
470
10V
2SK3669
BOOSTER
0.1
100V
0.1
100V
470
63V
2SK3669
BOOSTER
1.5k
1/10W
0.15
0.001
0.1
4.7
6.3V
0.1
0.1
0.1
0UH
0.1
0.1
470p
330
1/10W
4.7
6.3V
220
25V
0.1
100V
0.1
100V
10
63V
15K
4.7k
1SS352-TPH
5P
680p
680p
680p
680p
680p
680p
47
25V
10
10
0UH
DTA114EKA-T146
RELAY DRIVER
220
25V
0.1
0.1
220k
2SA1162Y-T
V.PROTECT
2SA1162Y-T
V.PROTECT
1
250V
0.1
1W
0.1
470
63V
120
1/10W
120
1/10W
0.1
220
25V
0.1
10k
1/10W
10k
1/10W
10k
1/10W
0.1
0.1
4.7k
15k
360
0.1
82k
4.7
0
100
63V
100
10
1/10W
0.015
1k
1/4W
2200
10V
10
1/10W
0.1
0.1
0UH
4.7
1W
HIP2101IBZT
HIP2101IBZT
0.1
1W
0.018
22k
10k
1/10W
0.15
2.2
0
2.2
SP2P
W/G.P
JALCO
0UH
0UH
0UH
0UH
330
220
150
330
33
1/10W
4.7
6.3V
VDD
XO VDD
DVDD
GND
OVERCUR
RENT
TEMP
G10V
I.PROTECT
V.PROTECT
RELAY SW
12V
-12V
GATEDRIVE10V
EN
BUS
LAT2
SHIFT
SCDT
NSMUTE
INIT
BCKO
BCKO
LRCKO
LRCKO
SCK
BCKO
605
605 BCK
308 DATA
308
FSOI
XSFOUT 1
XSFOUT 3
P-STOP
XFSIIN
BCK
308
RELAY
NSMUTE
SHIFT
LAT1
LAT2
308 DATA
EN
DIAG
LAT3
LATCH
605 DATA
D1
HP SW
DATA SL/SR
INIT
RELAY
SCDT
PH/RY
DIGITAL POW
ER AMP
DIGITAL POW
ER AMP
PROCESSOR
PCM/PWM
BUFFER
BOARD
BOARD
CENTER
(IMPEDANCE
SPEAKER
SUB WOOFER
DIGITAL
POWER
DEAD TIM
E
DEAD TIM
E
WOOFER AM
P
BOARD
AMP
(1/4)
BOARD
AMP
(1/4)
(4/4)
BOARD
AMP
(3/4)
(4/4)
BOARD
BOARD
BOARD
AMP
AMP
AMP
(1/4)
(1/3)
AUDIO OUT
(Page 24)
(Page 26)
(Page 27)
(Page 24)
(Page 27)
(Page 33)
(Page 24)
(Page 17)
• See page 12 for Waveforms. • See page 34, 35 for IC Block Diagrams.

Sony STR-DB900 Specifications

General

Brand	Sony
Model	STR-DB900
Category	Stereo Receiver
Language	English