Sony SRS-DB500 Service Manual ▷ View online
SRS-DB500
SRS-DB500
9
9
4-2. BLOCK DIAGRAM - AMP Section -
DIGITAL POWER AMP
IC551
STREAM PROCESSOR
IC451
31 DATA
OVER LOAD
DETECT
Q552, 553
SYSTEM CONTROLLER
IC001 (2/3)
30 BCK
29 LRCK
36 XfsiIN
29 LRCK
36 XfsiIN
21 SCDT
SM_DATA
22 SCSHIFT
SM_CLK
23 SCLATCH
SM_LATCH1
27 INIT
SM_INIT
OVFFLAGL
X471
49.1MHz
L.P.F.
L.P.F.
19 SOFTMUTE
18 NSPMUTE
18 NSPMUTE
SM_SOFT_MUTE
SM_NSP_MUTE
SM_NSP_MUTE
SM_SOFT_MUTE
OUTL1 11
OUTL2 9
XfsoIN 48
FsoCKO 37
XfsoOUT 14
FsoI 38
SM_DATA
SM_CLK
SM_LATCH2
SM_INIT
SM_CLK
SM_LATCH2
SM_INIT
24 OVFFLAGR
SM_LATCH1
SM_LATCH2
SM_LATCH2
SM_INIT
25
CLOCK
BUFFER
IC471
_
_
TB601
OVER LOAD
DETECT
Q503, 504
L.P.F.
L.P.F.
+
OVER LOAD
DETECT
Q501, 502
L.P.F.
L.P.F.
+
DIGITAL POWER AMP
IC501
DC DETECT
Q551
SM_LATCH1
SM_LATCH2
SM_LATCH2
35
SM_CLK
SM_CLK 34
SM_DATA
SM_DATA 33
36
SM_INIT 37
SM_NSP_MUTE
SM_NSP_MUTE 38
SM_OTW 51
SM_OVF 25
SM_SOFT_MUTE
SM_SOFT_MUTE 23
SM_SD 29
DC_DETECT 27
SM_RESET 52
PWM_B
6 PWM_A
8
PWM_D
16 PWM_C
18
/SD
PWM_A
OUT_B
6
PWM_D
18
PWM_B
8
PWM_C
16
SM_OTW
2
5
RESET_A
7
RESET_C
6,*1$/3$7+
: AUDIO
SM_NSP_MUTE
A/D CONVERTER
IC351
13 VINL
14 VINR
14 VINR
DOUT 9
BCK 8
LRCK 7
SCKI 6
A/D CONVERTER
IC301
13 VINL
14 VINR
DOUT 9
BCK 8
LRCK 7
SCKI 6
A
WF
B
SP_L
SP_R
STREAM PROCESSOR
IC401
31 DATA
30 BCK
29 LRCK
36 XfsiIN
29 LRCK
36 XfsiIN
21 SCDT
22 SCSHIFT
23 SCLATCH
27 INIT
22 SCSHIFT
23 SCLATCH
27 INIT
OVFFLAGL
19 SOFTMUTE
18 NSPMUTE
18 NSPMUTE
OUTL1 11
OUTL2 9
OUTR1 6
OUTR2 4
XfsoIN 48
FsoI 38
24 OVFFLAGR
25
25
X472
12.288MHz
CLOCK
BUFFER
IC473
OUT_A 39
36
L.P.F.
L.P.F.
OUT_C
OUT_D 28
31
OUT_B
OUT_A 39
36
OUT_D
OUT_C 31
28
R
SPEAKER
L
SP1
(SUBWOOFER)
C
SW+
+3.3V
EEPROM
IC003
EEP_SDA 18
EEP_SCL
XOUT XIN
17
9
11
17
/SD
SM_OTW
2
5
RESET_A
7
RESET_C
17
X101
20MHz
(Page 8)
(Page 8)
(Page 8)
SRS-DB500
SRS-DB500
10
10
4-3. BLOCK DIAGRAM - PANEL/POWER SUPPLY Section -
3
POWER CONTROL
IC901
D
(AC IN)
MAIN POWER
TRANSFORMER
T901
SUB POWER
TRANSFORMER
T902
F901
D908
ISOLATOR
PC901
B+ SWITCH
Q901
4 VCC
1 OCP/SYNC
5 FB/OLP
1
POWER CONTROL
IC921
DRAIN
4 VCC
6 FB/OLP
8 START_UP
RECT
D931
D931
D932
SHUNT
REGULATOR
IC931
D922
D910
D905
D906, 907
POWER ON/OFF
CONTROL
Q943, 947
+28V
RECT
D943
D943
D914, 915
TH901
POWER VOLTAGE
CONTROL
Q981, 982
ISOLATOR
PC902
LF901
LINE
FILTER
LF902
LINE
FILTER
RECT
D901
D901
AMP +1.8V
+1.8V
REGULATOR
IC491
RECT
D941
D941
+12V
REGULATOR
IC941
A +9V
SHUNT
REGULATOR
IC951
49
P_CON1
50
P_CON2
SYSTEM CONTROLLER
IC001 (3/3)
7 LED_A
2 LED_CKS
4 LED_CKL
2 LED_CKS
4 LED_CKL
LED DRIVER
IC005
4
A
8
CKS
6
CKL
6 LED_/OE
5
/OE
/Q1 – /Q9
21 SIRCS
ROTARY
ENCODER
S001
REMOTE CONTROL
RECEIVER
IC002
I/
1
32 PWR_KEY
15
14 MASTER_VOLUME1
S051
+9V
REGULATOR
IC253
D909
MASTER_VOLUME2
A +12V
+3.3V
REGULATOR
IC943
D +3.3V
D051
LED DRIVE
Q001
13 LED_STANDBY
ISOLATOR
PC903
43 STATIC_KEY2
+5V
REGULATOR
IC391
+5V
8
RESET
RESET SIGNAL
GENERATOR
IC004
RIPPLE
FILTER
Q921
D923
(AEP, UK, SP, AR, AUS, CH)
D001
I/
1
JOG
(VOLUME, BASS, TREBLE)
INPUT
S052
42 STATIC_KEY1
S053
41 STATIC_KEY0
S054
D003 – 010,
D002
(VOLUME/BASS/TREBLE LEVEL)
/Q14 – /Q16
D011 – 014
(ILLUMINATION)
D053
16 /Q11
INPUT 2
D015
17 /Q10
MUTING
D054
15 /Q12
D055
14 /Q13
E +4V
TREBLE
BASS
TREBLE
BASS
1, 2, 24 – 18
13, 1
1, 12
(US, CND, E92, MX, TW)
: Chinese model
Abbreviation
CH
: Canadian model
CND
: Brazilian, Colombian and Venezuelan models
E92
: Mexican model
MX
: Argentina model
AR
: Australian model
AUS
: Singapore model
SP
: Taiwan model
TW
Ver. 1.3
SRS-DB500
SRS-DB500
11
11
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specifi ed.
• f : internal component.
• 2 : nonfl ammable resistor.
• 5 : fusible resistor.
• C : panel designation.
• 5 : fusible resistor.
• C : panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• Voltages and waveforms are dc with respect to ground
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : POWER ON
*
: Impossible to measure
• Voltages are taken with VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F :
F :
AUDIO
• Abbreviation
AR :
AR :
Argentina
model
AUS :
Australian
model
CH
: Chinese model
CND : Canadian model
E92
E92
: Brazilian, Colombian and Venezuelan models
MX
: Mexican model
SP
: Singapore model
TW :
Taiwan
model
For Printed Wiring Boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• f : internal component.
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• f : internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
C E
B
These are omitted.
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• Circuit Boards Location
• Abbreviation
AR :
AR :
Argentina
model
AUS :
Australian
model
CH
: Chinese model
CND : Canadian model
E92
E92
: Brazilian, Colombian and Venezuelan models
MX
: Mexican model
SP
: Singapore model
TW :
Taiwan
model
CONNECTOR board
AMP board
INPUT board
POWER board
TERMINAL board
MAIN board
CONTROL board
JACK board
– SUBWOOFER –
Ver. 1.3
Note:
The components identi-
fi
The components identi-
fi
ed by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specifi ed.
cal for safety.
Replace only with part
number specifi ed.
Note:
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une pièce portant le nu-
méro spécifi é.
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une pièce portant le nu-
méro spécifi é.
SRS-DB500
SRS-DB500
12
12
4-4. PRINTED WIRING BOARD - AUDIO Section (1/2) -
1
44
22
23
B
E
B
E
B E
B E
1
4
5 8
1
24
25
36
37
48
12
13
8
1
4
5
B E
B E B E
1
4
4
5
8
1
4
5
8
1
24
25
36
37
48
12
13
B
E
E
BE
BE
BE
1
32
16
17
B
E
BE
1
4
5
8
1
44
22
23
B
E
FB604
R401
FB605
R402
FB606
R403
R404
R210
R211
R405
R212
R406
R213
R409
R601
IC351
R602
R603
R604
R410
R411
R605
R606
R412
R607
R413
R608
R414
R609
R415
R416
IC551
R610
R611
R612
R613
R614
R615
R616
R619
C201
C202
C203
C204
C205
C206
C207
C404
C409
R251
R252
R254
C601
R256
C602
R257
R258
R259
C605
IC391
C606
C609
R451
R452
R453
R260
R454
R261
R455
R262
R456
C610
R264
C611
R266
R267
C614
R268
CL501
R461
R462
R463
CL511
CL512
CL513
CL514
R471
CL515
R472
R474
R477
R481
C252
R482
C253
R483
C254
C255
C256
C258
R488
R489
R490
C263
C457
C458
C459
Q502 Q501
Q503
Q504
CL551
CL552
CL553
C474
IC201
CL555
FL101
C476
CL556
C477
CL557
CL558
C479
CL559
CL560
X471
IC401
X472
IC601
C491
C492
C493
FB107
FB108
FB109
D251
R105
R106
D453
R107
R108
Q551
FB502
Q552 Q553
FB503
R111
R112
R113
R114
R308
R115
R309
R116
R117
R117
R118
IC251
R119
IC252
R502
R503
R506
R120
R121
R122
R123
R124
IC451
R510
R511
R512
R513
R514
R515
C107
C108
IC471
IC473
C111
C112
C113
C114
C308
C115
C309
C116 C117
C118
C119
C310
C311
C312
C313
C507
C120
C508
C121
R351
C122
R352
C123
R353
C124
C125
C126
C127
C128
C129
IC491
C708
C709
CL401
R553
C130
C131
C132
C710
C711
C712
C136
C713
C714
C138
C715
C139
C716
C522
C717
C523
C718
C719
R561
R562
C526
R563
C527
C140
R564
C141
R565
C142
C143
C720
C721
C722
C723
C724
C725
C726
C727
C533
C728
R570
C534
R571
C535
R572
R573
C733
C734
C540
C735
C736
C737
C738
C739
D101
C356
C357
C740
C358
C359
C742
C744
C745
C746
C747
C360
C361
C749
C362
C751
C752
C756
C757
Q601
CL451
RB402
Q602
RB403
Q603
Q604
Q605
IC101
IC102
Q606
L401
C572
C573
IC301
C576
C577
ET504
ET506
IC501
C583
C584
C391
C392
FL602
C592
Q251
R201
R202
CL691
R209
ET505
C741
1
3
4
5
5
1 3
4
5
1
3
1
7
14
8
4
5
1
3
4
5
(CHASSIS)
(CHASSIS)
(CHASSIS)
1-879-486-
11
(11)
AMP BOARD
(COMPONENT SIDE)
1
7
14
8
A
B
C
D
E
1
2
3
4
5
6
7
8
•
: Uses unleaded solder.
• See page 11 for Circuit Boards Location.
Note: When IC501 and IC551 on the AMP board and the complete AMP board are replaced, spread
the compound referring to “NOTE OF REPLACING THE IC501 AND IC551 ON THE AMP
BOARD AND THE COMPLETE AMP BOARD” on servicing notes (page 3).
BOARD AND THE COMPLETE AMP BOARD” on servicing notes (page 3).
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