DOWNLOAD Sony SRS-DB500 Service Manual ↓ Size: 2.44 MB | Pages: 43 in PDF or view online for FREE

Model
SRS-DB500
Pages
43
Size
2.44 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
srs-db500.pdf
Date
PREV: Sony MHC-GZR88D / MHC-GZR99D Service Manual

Sony SRS-DB500 Service Manual ▷ View online

SRS-DB500
SRS-DB500
13
13
4-5.  PRINTED  WIRING  BOARDS - AUDIO Section (2/2) -
L471
C401
C402
C403
C405
C406
C407
C408
CL106
CL107
CL108
CL301
CL302
CL110
CL111
CL112
R457
C613
C615
CL502
CL503
CL504
CL505
CL506
CL507
CL508
CL509
CL700
CL705
CL706
R473
R478
R479
R484
R485
R486
R487
C451
C452
C453
C454
C455
C456
CL351
CL352
L301
C472
C473
CL554
C478
L503
CL392
D252
CL393
R101
R102
R103
R104
FB501
R109
R110
R501
R504
R505
R508
R516
R517
R518
R519
C101
C106
C302
C303
C501
C502
C503
C504
C505
C506
CL202
CL203
C510
C511
C512
C513
C514
R551
C515
C516
C517
R554
C518
R555
C519
R558
C520
C521
CL603
C524
C525
R566
R567
R568
R569
C531
C532
C729
R574
C730
C731
C732
C541
C542
C543
C544
C545
C546
C547
C548
C551
C552
C553
C554
C555
C556
C363
CL251
CL253
C750
C560
C561
D501
C562
D502
C563
D503
C564
D504
C758
C565
C566
CL452
C567
CL453
C568
CL454
C569
CL455
CL456
CL457
CL458
CL459
C570
C571
C574
CL460
C575
CL461
CL462
CL463
CL464
CL465
CL466
CL467
CL468
CL469
C581
C582
CL470
C585
CL471
C586
CL472
C587
CL473
CL474
CL475
CL476
CL477
CL478
CL479
C593
C594
CL480
C595
C596
C597
C598
C599
CL491
D551
D552
D553
D554
1
4
1
8
3
C260
IC253
CN102
L553
L554
CN553
CN591
L501
L502
L551
L552
CN592
A501
A502
Q553
C509
R556
C530
CN551
C536
C537
C538
C539
C557
C558
C559
ET501
ET502
C580
C588
C589
C590
C591
C604
C259
C471
C706
ET503
C393
C608
C612
C251
C261
C262
ET401
C105
C110
C133
C134
C135
C137
1
8
2
1
30
31
CN103
CN501
CL750
CL751
CL752
CL753
CL754
C750
C751
C752
C753
C754
C755
C756
C757
TB601
CN602
L750
L751
L752
L753
CL755
CL756
CL757
FL701
FB753
FB754
FB755
D102
C761
C762
C763
C764
C765
1
4
CN101
JW101
JW102
JW103
JW104
J101
FB607
FB608
C031
C032
C033
C034
C035
C036
R076
R077
D031
D032
FB601
FB602
FB603
10
1
CN021
J601
J102
1-879-486-
11
(11)
AMP BOARD   
(CONDUCTOR SIDE)
1
1
2
4
B
POWER BOARD
CN906
D
POWER BOARD
CN904
1
4
A
CONNECTOR
BOARD
CN801
(CHASSIS)
(CHASSIS)
(CHASSIS)
(CHASSIS)
(SUBWOOFER)
SP1
4
1
1-879-483-
11
(11)
TERMINAL BOARD
+
–
+
–
(CHASSIS)
L
R
SPEAKER
1-879-989-
11
(11)
INPUT BOARD
L
R
INPUT 1
(CHASSIS)
1-879-484-
11
(11)
JACK BOARD
INPUT 2
i
1
2
3
A
B
C
D
E
1
2
3
4
5
6
7
8
9
10
11
12
F
G
• 
 : Uses unleaded solder.
• See page 11 for Circuit Boards Location.
(Page 20)
(Page 20)
(Page 18)
Note: When 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).
SRS-DB500
SRS-DB500
14
14
4-6.  SCHEMATIC  DIAGRAM - AMP Board (1/3) -
• See page 22 for Waveforms.   • See page 22 for IC Block Diagrams.
(2/3)
AMP
BOARD
1
A
CONNECTOR
BOARD
CN801
2
BOARD
AMP
(3/3)
3
BOARD
AMP
(3/3)
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
2
4
3
1
3.3
1.8
0
0
3.3
0
3.3
3.3
3.3
1.7
3.3
1.7
3.3
1.5
3.3
3.3
3.3
1.7
3.3
3.3
1.7
1.7
3.3
1.8
1.6
3.3
3.3
1.7
1.7
3.3
1.8
1.6
1.7
3.3
1.7
3.3
1.7
1.7
3.3
3.3
3.3
1.5
1.7
1.7
3.3
3.3
3.3
3.3
0
0
0
1.5
3.3
1.8
1.5
3.2
1.6
1.5
1.6
3.2
3.3
1.7
2.5
3.3
3.3
2.5
1.7
1.6
3.3
5
2.5
1.3
3.3
3.3
1.8
5
8.9
1.3
8.9
1.7
1.6
3.3
5
2.5
1.7
2.5
2.5
3.3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25 26 27 28 29 30 31 32 33 34 35 36
37
38
39
40
41
42
43
44
45
46
47
48
0.1
C401
0.1
C402
0.1
C403
0.1
C404
0.1
C405
0.1
C406
0.1
C407
0.1
C408
0.1
C451
0.1
C452
0.1
C453
0.1
C454
0.1
C455
0.1
C456
1
C491
10k
R457
100
R353
100
R308
100
R309
100
R409
100
R410
CL401
CL451
49.1MHz
X471
VDD
100
R479
100
R478
100
R474
100
R471
1M
R473
1000p
C472
10p
C473
5p
C474
1uH
L471
CL352
CL301
CL302
CL392
12.288 MHz
X472
R482
1M
C477
18p
VDD
C476
18p
R483
10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
31P
CN501
CL393
CL452
CL453
CL454
CL455
CL456
CL458
CL459
CL460
CL461
CL462
CL463
CL464
CL465
CL466
CL467
CL468
CL469
CL470
CL471
CL473
CL474
CL475
CL476
CL477
CL478
CL479
CL480
1000p
C392
10V
100
C393
10V
100
C471
C478
1
1
C479
E
ET401
E
ET503
0.1
C391
100p
C312
100p
C361
100p
C362
100p
C311
100
RB402
100
RB403
CL552
CL553
0.1
C363
CL457
R481
1k
FB501
FB502
FB503
100
R477
10
C359
10
C360
10
C308
10
C309
10
C358
10
C310
16V
10
C357
16V
10
C356
100
R405
100
R406
100
R456
100
R455
100p
C708
100p
C709
100p
C710
100p
C711
100p
C712
100p
C713
100p
C714
100p
C715
100p
C716
100p
C717
100p
C718
100p
C719
100p
C720
100p
C721
100p
C722
100p
C723
100p
C724
100p
C725
100p
C726
1000p
C727
1000p
C728
0.1
C313
47
R472
6.3V
100
C409
6.3V
100
C459
4V
47
C493
1000p
C492
0.1
C458
0.1
C457
100p
C742
100p
C744
100p
C745
100p
C746
100p
C749
100p
C751
100p
C752
100p
C757
10uH
L401
10uH
L301
10k
R574
100
R462
100
R412
100
R413
100
R463
D453
0
1000p
C756
1000p
C747
1k
R411
1k
R461
100
R488
100
R489
100
R490
100
R414
100
R415
100
R416
100
R352
100
R351
100
R486
100
R487
100
R484
100
R485
10
C302
10
C303
0.01
C758
1k
R502
SM_NSP_MUTE
SM_NSP_MUTE
SM_LATCH2
SM_CLK
SM_DATA
SM_LATCH1
SM_OVF
SM_SOFT_MUTE
SM_INIT
(CHASSIS)
AMP BOARD (1/3)
2
3
4
5
6
7
8
9
10
1
SM_OTW
SM_RESET
DC_DETECT
SM_SD
SM_INIT
SM_NSP_MUTE
SM_SOFT_MUTE
SM_CLK
SM_DATA
SM_LATCH1
SM_LATCH2
SM_OVF
AUDIO_DATA
AUDIO_CLOCK
AUDIO_LATCH
HP_MUTE
P_CON2
POWER_METER
P_CON1
GND
GND
GND
3.3V
3.3V
E4V
GND
GND
GND
GND
GND
HP_DETECT
L
R
GND
9V
WF
POWER_METER
HP_DETECT
HP_MUTE
AUDIO_CLOCK
AUDIO_DATA
AUDIO_LATCH
POWER_METER
HP_DETECT
HP_MUTE
AUDIO_CLOCK
AUDIO_DATA
AUDIO_LATCH
HP_DETECT
AUDIO_DATA
AUDIO_CLOCK
HP_MUTE
P_CON2
P_CON1
POWER_METER
AUDIO_LATCH
SM_INIT
SM_NSP_MUTE
SM_SOFT_MUTE
SM_CLK
SM_DATA
SM_LATCH1
SM_LATCH2
SM_OVF
SM_OTW
SM_RESET
DC_DETECT
SM_SD
TK11118CSCL-G
IC491
IC491
+1.8V REGULATOR
CONT
GND
NP
CXD9788AR
IC451
IC451
STREAM PROCESSOR
XOVss
XfsoOUT
XOVdd
DVdd
DVss
NSPMUTE
SOFTMUTE
PGMUTE
SCDT
SCSHIFT
SCLATCH
OVFFLAGR
OVFFLAGL
SFLAG
INIT
MCKSEL
LRCK
BCK
DA
TA
BFVdd
BFVss
TEST
DVdd
XfsiIN
FsoCKO
FsoI
HPOUTR2
HPVssR
HPOUTR1
HPVddR
HPOUTL2
HPVssL
HPOUTL1
HPVddL
XVdd
XfsoIN
XVss
Vsubc
VssR
OUTR2
VddR
OUTR1
VssR
VssL
OUTL2
VddL
OUTL1
VssL
CXD9788AR
IC401
STREAM PROCESSOR
IC401
XOVss
XfsoOUT
XOVdd
DVdd
DVss
NSPMUTE
SOFTMUTE
PGMUTE
SCDT
SCSHIFT
SCLATCH
OVFFLAGR
FsoCKO
FsoI
HPOUTR2
HPVssR
HPOUTR1
HPVddR
HPOUTL2
HPVssL
HPOUTL1
HPVddL
XVdd
XfsoIN
OVFFLAGL
SFLAG
INIT
MCKSEL
LRCK
BCK
DA
TA
BFVdd
BFVss
TEST
DVdd
XfsiIN
XVss
Vsubc
VssR
OUTR2
VddR
OUTR1
VssR
VssL
OUTL2
VddL
OUTL1
VssL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25 26 27 28 29 30 31 32 33 34 35 36
37
38
39
40
41
42
43
44
45
46
47
48
NC
GND
54
3
2
1
TC7SHU04FU(T5RSOJF)
IC471
CLOCK BUFFER
IC471
TC7SHU04FU(T5RSOJF)
IC473
CLOCK BUFFER
IC473
NC
GND
54
3
2
1
PCM1808PWR
IC301
IC301
A/D CONVERTER
BCK
DOUT
MDO
MD1
FMT
VINL
VINR VREF
AGND
VCC
VDD
DGND
SCKI
LRCK
14
13
12
11
10
9
8
7
6
5
4
3
2
1
PCM1808PWR
IC351
IC351
A/D CONVERTER
VREF
AGND
VCC
VDD
DGND
SCKI
LRCK
BCK
DOUT
MDO
MD1
FMT
VINL
VINR
14
13
12
11
10
9
8
7
6
5
4
3
2
1
TK11150CSCL-G
IC391
IC391
+5V REGULATOR
VOUT
VIN
CONT
GND
NP
54
3
2
1
VOUT
VIN
54
3
2
1
J
4
B
16
6
9
11
D
15
H
10
K
17
3
5
12
C
F
18
1
E
8
G
14
A
2
13
I
7
(Page 15)
(Page 17)
(Page 16)
(Page 16)
SRS-DB500
SRS-DB500
15
15
4-7.  SCHEMATIC  DIAGRAM - AMP Board (2/3) -
• See page 22 for IC Block Diagrams.
IC B/D
IC B/D
B
POWER
BOARD
CN906
BOARD
AMP
(3/3)
4
BOARD
AMP
(3/3)
5
AMP
1
(1/3)
BOARD
C
TERMINAL
BOARD
CN602
D
POWER
BOARD
CN904
11
.9
25.1
14
28
28
28
14
28
25.1
25.1
14
14
28
28
25.1
11
.9
11
.9
3.3
3.3
1.7
1.7
3.3
1.1
3.3
1.7
1.7
3.3
11
.9
12
13.9
0
13.9
13.9
0
13.9
13.9
0
13.9
13.9
0
13.9
13.9
0
13.9
13.9
0
13.9
11
.9
25.1
14
28
28
28
14
28
25.1
25.1
14
14
28
28
25.1
11
.9
11
.9
3.3
3.3
1.7
1.7
3.3
1.1
3.3
1.7
1.7
3.3
11
.9
12
3.3
0
44
38
39
40
41
42
43
7
6
5
4
3
2
1
37
36
35
34
33
32
8
9
10
11
28
29
30
31
17
16
15
14
13
12
27
26
25
24
23
22
21
20
19
18
GVDD_B
/OTW
NC
NC
/SD
PWM_A
RESET_A
PWM_B
OC_ADJ
GND
AGND
VREG
M3
M2
M1
PWM_C
/RESET_C
PWM_D
NC
NC
VDD
GVDD_C
44
38
39
40
41
42
43
7
6
5
4
3
2
1
37
36
35
34
33
32
8
9
10
11
28
29
30
31
17
16
15
14
13
12
27
26
25
24
23
22
21
20
19
18
GVDD_B
/OTW
NC
NC
/SD
PWM_A
/RESET_A
PWM_B
OC_ADJ
GND
AGND
VREG
M3
M2
M1
PWM_C
/RESET_C
PWM_D
NC
NC
VDD
GVDD_C
0.1
C582
0.1
C551
0.1
C552
0.1
C553
0.1
C554
0.1
C555
0.1
C532
0.1
C501
0.1
C502
0.1
C503
0.1
C504
0.1
C505
0.1
C577
0.1
C576
0.1
C573
0.1
C572
C569
0.1
C563
0.1
0.1
C527
0.1
C526
0.1
C523
0.1
C522
C519
0.1
C513
0.1
C518
0.1
C512
0.1
1000p
C571
1000p
C565
1000p
C521
1000p
C515
1000p
C520
4700p
C557
4.7
R556
4.7
R506
10
R554
10
R555
10
R551
10
R558
10
R508
10
R501
10
R505
10
R504
22k
R553
22k
R503
10uH
L551
10uH
L552
10uH
L501
10uH
L502
RSA39L
TE25
D554
RSA39L
TE25
D553
RSA39L
TE25
D552
RSA39L
TE25
D551
RSA39L
TE25
D504
RSA39L
TE25
D503
RSA39L
TE25
D502
RSA39L
TE25
D501
4700p
C508
4700p
C507
100
R453
100
R454
CL501
1000p
C514
CL551
4700p
C558
0.033
C506
0.033
C524
0.033
C525
0.033
C531
0.033
C556
0.033
C574
0.033
C575
0.033
C581
CL503
CL504
CL506
CL507
CL700
CL554
CL502
CL351
CL508
CL491
4.7
C584
100k
R562
100k
R563
100k
R564
100k
R565
2SC3052EF-T1-LEF
Q551
ISA1235AC1TP-1EF
Q552
ISA1235AC1TP-1EF
Q553
ISA1235AC1TP-1EF
Q501
ISA1235AC1TP-1EF
Q502
ISA1235AC1TP-1EF
Q503
ISA1235AC1TP-1EF
Q504
4.7
C534
100k
R510
100k
R511
100k
R513
100k
R514
100k
R515
100k
R512
4.7
C533
0.1
C540
100k
R561
CL505
1
2
2P
CN553
35V
100
C588
35V
100
C589
35V
100
C590
35V
100
C591
16V
47
C592
16V
47
C535
35V
100
C536
35V
100
C537
35V
100
C538
35V
100
C539
CL555
CL556
CL557
CL558
CL559
CL51
1
CL512
CL513
CL514
CL515
CL472
1
C510
1
C516
1
C511
1
C517
1
C561
1
C567
35V
1000
C580
35V
1000
C559
35V
1000
C530
35V
1000
C509
CL705
CL706
C585
2200p
C593
2200p
C594
2200p
C595
2200p
C541
2200p
C542
2200p
C543
2200p
C544
2200p
C545
2200p
C546
2200p
C547
2200p
C548
2200p
R516
3.3
R517
3.3
R518
3.3
R519
3.3
R568
3.3
R569
3.3
16V
220
C706
E
ET501
E
ET502
E
ET504
E
ET505
E
ET506
0.1
C583
0.01
C586
0.01
C587
CL560
100
R570
R567
3.3
1000p
C570
1
C566
C597
2200p
C568
0.1
C598
2200p
1
C560
1000p
C564
C562
0.1
C599
2200p
R566
3.3
C596
2200p
CL691
1
8
3
4
5
6
7
CN591
9P
6.8k
R572
47k
R571
CL509
100k
R573
100
R401
100
R402
100
R403
100
R404
1
2
3
4
CN551
4P
GND
GND
28V
28V
1
2
3
4
4P
CN592
L+
L-
R+
R-
100p
C729
100p
C730
1000p
C733
1000p
C734
1000p
C735
1000p
C736
1000p
C737
1000p
C738
1000p
C739
1000p
C740
100
R451
100
R452
1000p
C741
1000p
C731
1000p
C732
0.01
C610
1000p
C750
L503
10uH
L553
L554
DC_DETECT
SM_OTW
SM_SD
SM_RESET
P_CON2
P_CON1
(CHASSIS)
SP1
DC DETECT
Q552, 553
OVER LOAD DETECT
OVER LOAD DETECT
Q503, 504
OVER LOAD DETECT
Q501, 502
GVDD_D
BST_D
NC
PVDD_D
PVDD_D
OUT_D
GND_D
GND_C
OUT_C
PVDD_C
BST_C
BST_B
PVDD_B
OUT_B
GND_B
GND_A
OUT_A
PVDD_A
PVDD_A
NC
BST_A
GVDD_A
CXD9965TN
IC551
IC551
DIGITAL POWER AMP
CXD9965TN
IC501
IC501
DIGITAL POWER AMP
GVDD_D
BST_D
NC
PVDD_D
PVDD_D
OUT_D
GND_D
GND_C
OUT_C
PVDD_C
BST_C
BST_B
PVDD_B
OUT_B
GND_B
GND_A
OUT_A
PVDD_A
PVDD_A
NC
BST_A
GND_A
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
SW+
SW-
P_CON1
A+12V
P_CON2
2
NC
AGND
DGND
E+4V
D+3.3V
12V
SW+
1
2
8
4
5
7
9
10
3
6
(2/3)
AMP BOARD
J
4
B
16
6
9
11
D
15
H
10
K
3
5
12
C
F
1
E
8
G
14
A
2
13
I
7
(SUBWOOFER)
(Page 21)
(Page 16)
(Page 16)
(Page 14)
(Page 17)
(Page 21)
Note: When 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).
SRS-DB500
SRS-DB500
16
16
4-8.  SCHEMATIC  DIAGRAM - AMP Board (3/3) -
• See page 22 for IC Block Diagrams.
(2/3)
4
BOARD
AMP
(1/3)
3
BOARD
AMP
(2/3)
BOARD
AMP
5
(1/3)
2
BOARD
AMP
BOARD
JACK
CN021
E
BOARD
INPUT
CN101
F
IC B/D
12
8.9
4.5
4.5
4.5
8.9
4.5
4.5
4.5
3.3
8.9
8.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
0
3.3
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
4.5
8.9
4.5
4.5
4.5
4.5
4.5
4.5
8.9
4.5
4.5
4.5
4.5
4.5
4.5
8.9
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
8.9
0
0
0.7
0.7
4.5
5.1
4.5
8.9
0
8.9
3.3
0
4.5
5.1
4.5
4.4
4.5
4.4
0.1
C201
1k
R254
4.7k
R260
CL202
CL203
CL251
4.7k
R259
50V
10
C251
4.7k
R608
CL108
470p
C602
470p
C101
22
R115
4.7k
R610
4.7k
R113
50V
10
C105
2SC5938-T112-1B
Q603
10k
R603
2SC5938-T112-1B
Q604
47k
R602
RT1N144C-TP-1
Q601
10k
R614
16V
100
C137
22
R116
50V
10
C110
RT1P141C-TP-1
Q602
0.1
C601
100k
R606
CL107
10k
R601
IN1A
IN2A
IN3A
IN4A
IN5A
SELOUTA
VOL1A
TONE-HA
TONE-BA
TONE-DBA
SRA
OUTA
GND D
GND A
DATA
CLOCK
4700p
C132
0.01
C605
4700p
C131
CL110
10V
220
C608
22
R117
8
7
6
5
4
3
2
1
V-
50V
10
C135
4700p
C126
1k
R110
1k
R109
4.7k
R607
47k
R612
0.22
C130
4700p
C125
0.22
C129
470p
C606
10V
220
C604
50V
10
C133
0.01
C609
2SC3052EF-T1-LEF
Q606
0.047
C128
22
R605
10k
R613
10k
R604
4.7k
R609
CL603
50V
10
C134
0.047
C127
2SC3052EF-T1-LEF
Q605
4.7k
R114
CL111
22
R615
0.1
C136
10k
R611
100k
R616
470p
C106
CL112
CL106
2SC3052EF-T1-LEF
Q251
L
GND
R
CL253
50V
10
C262
MC2837
D251
100k
R264
SW+
WF
47k
R262
47k
R261
0.1
C258
0.1
C254
50V
10
C261
16V
100
C259
0.1
C139
I
O
COM
1
2
3
50V
1
C124
50V
1
C123
10k
R267
V+
V+
8
7
6
5
4
3
2
1
V+
100p
C118
100p
C115
100p
C113
100p
C120
100p
C122
100p
C117
100p
C114
100p
C121
47k
R257
0.033
C253
0.033
C252
C263
0.01
16V
100
C260
1
2
3
4
4P
CN102
100p
C119
100p
C116
8
7
6
5
4
3
2
1
V-
MC2837
D101
47k
R118
47k
R119
4.7
C138
15k
R121
0
R120
100
R123
FB604
FB605
FB606
FB107
0.1
C204
C202
0.1
100
R210
R212
22k
22k
R202
22k
R201
R209
22k
100
R211
0.1
C205
C203
0.1
16V
100
C612
0.1
C613
10k
R619
0.01
C611
0.22
C255
0.22
C256
150k
R256
1k
R268
2.2k
R266
68k
R258
22k
R251
22k
R252
0.1
C614
0.1
C615
4.7k
R104
4.7k
R103
0.1
C141
0.1
C142
16V
10
C112
16V
10
C111
50V
C207
0.1
50V
C206
0.1
33k
R213
FB108
FB109
4.7k
R101
4.7k
R102
470
R105
470
R106
6.8k
R108
6.8k
R107
470p
C107
470p
C108
1k
R112
1k
R111
1
C140
EMI
FL602
EMI
FL101
2
8
3
4
5
6
7
8P
CN103
MC2837
D252
3300p
C143
1k
R124
330k
R122
DETECT
BASS FEEDBACK
MUTING
MUTING
SWITCHING
SWITCHING
Q601, 602
MUTING CONTROL
12V
9V
POWER_METER
HP_MUTE
AUDIO_CLOCK
AUDIO_DATA
AUDIO_LATCH
HP_DETECT
R
GND
GND
L
NC
1
HP_L
INPUT2_L
HP_DETECT
HP_R
HP_GND
INPUT2_R
INPUT2_GND
KIA78S09P-TP
IC253
IC253
+9V REGULATOR
NJM4565M(TE2)
IC601
IC601
HEADPHONE AMP
V+
NJM4558V-TE2
IC251
IC251
LOW-PASS FILTER
V-
NJM4558V-TE2
IC252
IC252
BASS FEEDBACK
DETECT
V-
8
7
6
5
4
3
2
1
NJM4558V-TE2
IC201
IC201
LOW-PASS FILTER
V-
8
7
6
5
4
3
2
1
NJU7391AV(TE2)
IC101
IC101
AUDIO PROCESSOR,
INPUT SELECTOR
LATCH
V+ A
V+ D
VREF
OUTB
SRB
TONE-DBB
TONE-BB
TONE-HB
VOL1B
SELOUTB
IN5B
IN4B
IN3B
IN2B
IN1B
32
31
30
29
28
27
123456
26
25
24
789
23
22
21
20
10
11
12
19
18
17
13
14
15
16
NJM4558V-TE2
IC102
IC102
VOLUME DETECT
V+
AMP BOARD (3/3)
J
4
B
6
9
11
D
15
H
10
3
5
12
C
F
1
E
8
G
14
A
2
13
I
7
(Page 15)
(Page 14)
(Page 17)
(Page 17)
(Page 15)
(Page 
14)
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