SCH21 AMP1
DIGITAL VIDEO
ANALOG AUDIO
DIGITAL AUDIO
TMDS SIGNAL
ANALOG VIDEO
GND LINE
POWER- LINE
POWER+ LINE
STBY POWER
SBR
SBL
FR
SR
C
SL
FL
-B
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AG
N
D
AG
N
D
AG
N
D
AG
N
D
AG
N
D
AG
N
D
R527
470
R484
470
O
PE
N
D
44
5
10K
R510
R504
100K
10K
R466
R460
100K
R417
100K
H
IG
H
G
N
D
SL
DC
_DE
T4
TR
_T
H
ER
M
AL
AS
O
RAD
I_
THER
M
AL
AG
N
D
AG
N
D
AG
N
D
AG
N
D
O
PE
N
D
44
7
O
PE
N
D
44
3
R
73
2
10
K
M
A
IN
1/3_A
5
C
51
7
O
PE
N
SOUND TUNE
SOUND TUNE
150K
R409
R528
1K(1)
R529
1K(1)
R705
1K2
12K(2)
R461
OPEN
R420
OPEN
R445
SOUND TUNE-1
C416
10/100
SR
SL
FR
CHASSIS
SR
SL
FR
SB
L_I
N
SBR
_I
N
1K2
R514
FR
_IN
SL_I
N
SR
_I
N
C
_I
N
C522
OPEN
SOUND TUNE
100/25(ROB)
C440
C521
OPEN
C520
OPEN
C408
100/25(ROB)
R524
33K
R515
JUMPER
R496
150K
150K
R452
ZD404
ZJ5.1A
33K
R437
R428
JUMPER
ZJ5.1A
ZD401
C445
2N2-K
C529
220P-100V
R485
1K(1)
C421
OPEN
C528
220P-100V
R446
100K
1K(1)
R441
C413
2N2-K
C405
OPEN
R402
100K
R719
220
R525
220
R486
1K(1)
O
PE
N
D
44
6
R704
1K2
R442
1K(1)
220
R717
R438
220
R703
1K2
1N4148
D418
1N4148
D412
1N4148
D406
D413
1N4148
270(1)
R447
12K(2)
R418
D401
1N4148
270(1)
R403
Q436
KTC3206Y
C443
470P-100V
R487
270(1)
470P-100V
C427
R443
270(1)
KTC3206Y
Q412
C467
OPEN
OPEN
R520
R507
OPEN
C499
OPEN
OPEN
R477
R463
OPEN
R433
OPEN
SOUND TUNE-1
JP468
JUMPER
JP537
OPEN
470
R509
R495
OPEN
SOUND TUNE-1
JP544
OPEN
470
R465
OPEN
R451
JP416
JUMPER
KTC3964
Q409
OPEN
R404
OPEN
C446
OPEN
C433
22(1)
R502
OPEN
C430
22(1)
R458
OPEN
C414
R439
22(1)
OPEN
C402
R511
0R47(2)
0R47(2)
R517
R474
0R47(2)
2SD2560
Q416
Q410
2SB1647
R424
0R47(2)
2
1
CP503
SC52136-021A
C432
10/100
10K
R456
10K
R457
R414
10K
10K
R413
2
1
SC52136-021A
CP501
5K6
R513
1N4148
D408
10K
R423
5K6
R426
1N4148
D402
C
FL
10N-K
C403
+H
IG
H
B
OPEN
R493
33K
R421
Q405
KST5401MTF
+H
IG
H
B
-H
IG
H
B
DC
_DE
T3
3K3
R536
H
IG
H
G
N
D
-H
IG
H
B
SR
OPEN
R508
C
FL
R449
OPEN
D458
0
R733
OPEN
FL
C
SB
L_I
N
SBR
_I
N
CLAMP402
SL_
IN
SR
_I
N
FL_I
N
100/25(ROB)
C424
ZJ5.1A
ZD407
R472
JUMPER
33K
R481
OPEN
C437
R490
100K
C429
2N2-K
R440
470
C527
220P-100V
O
PE
N
D
44
8
R718
220
R482
220
O
PE
N
D
44
4
R491
270(1)
R505
12K(2)
D407
1N4148
270(1)
R530
KTC3206Y
Q424
C411
470P-100V
C435
OPEN
KTC3964
Q433
C
43
9
220
/25
(K
R
3)
OPEN
R489
JUMPER
JP520
KTC3964
Q421
C
42
3
220
/25
(K
R
3)
JP518
OPEN
R422
470
220
/25
(K
R
3)
C
40
7
R408
OPEN
R526
22(1)
R483
22(1)
OPEN
C417
22(1)
R415
2SD2560
Q428
Q434
2SB1647
Q422
2SB1647
0R47(2)
R467
2SD2560
Q404
R430
0R47(2)
C448
10/100
10K
R500
10K
R501
2
1
SC52136-021A
CP502
1N4148
D414
5K6
R469
FR
OPEN
R551
C
51
5
47
/1
0
R
73
1
10
K
R464
PRF18BF471QB5RB
1
2
3
5
4
YMW025-05R
CP402
M
A
IN
1/3_B
3
C
51
4
330
/6
.3
C
51
3
330
/6
.3
C
51
6
O
PE
N
CN404
WIRE_6P
H
D
M
I D
IG
ITA
L
C
N
T
G
9
SOUND TUNE
SOUND TUNE
R410
JUMPER
C442
470/16(KR3)
270(1)
R405
10/100
C415
R506
22K
R499
47K
R498
680K
22K
R459
22K
R416
47K
R412
100N-K
C401
DHPTF1608 471P 115T
R406
OPEN
C419
TR_THERMAL
TR_THERMAL
ASO_DET
ASO_DET
DC_DET3
DC_DET3
PREGND
HIGHGND
HIGHGND
-HIGHB
+HIGHB
+HIGHB
PAGE 2
AMP B'D 2/2_A1
CLAMP400
R523
470K
R712
JUMPER
470
P
-100
V
(F
N
S
)
C
44
4
5
1
2
3
4
HN4A06J
Q419
JUMPER
R497
Q425
KTA1024Y
JUMPER
R453
1K2
R444
AGND
R436
470K
JUMPER
R710
SOUND TUNE
470
P
-100
V
(F
N
S
)
C
41
2
R427
1K2
1K2
R401
Q401
KTA1024Y
1N4148
D417
KTC3206Y
Q435
R516
33K
C441
470P-100V
R492
270(1)
KTA1024Y
Q426
1N4148
D411
R473
33K
R478
3K3(1)
C426
470/16(KR3)
C425
470P-100V
Q414
KTA1024Y
220P-100V
C422
R448
270(1)
1N4148
D405
KTC3206Y
Q411
3K3(1)
R434
C410
470/16(KR3)
C406
220P-100V
D415
OPEN
ZD409
OPEN
0R47(2)
R512
C
. W
.
V
R
41
3
1K
(B
)-V
0R47(2)
R518
C436
OPEN
10/100
C431
R479
560
D410
OPEN
ZD406
OPEN
R475
0R47(2)
R476
2K7
OPEN
ZD405
R435
560
D404
OPEN
R432
2K7
ZD402
OPEN
D403
OPEN
0R47(2)
R425
OPEN
C404
R726
OPEN
Q430
KST5551MTF
22K
R503
C434
100N-K
KST5401MTF
Q427
DHPTF1608 471P 115T
R494
R462
22K
R455
47K
R454
680K
Q415
KST5401MTF
R419
22K
R724
OPEN
Q406
KST5551MTF
R411
680K
OPTION
Q417
OPEN
SOUND TUNE-1
10K
R407
RADI_THERMAL
RADI_THERMAL
DC_DET4
THERMALDTETF
D457
OPEN
DC_DET4
HIGHGND
R734
OPEN
-HIGHB
+HIGHB
-HIGHB
4
3
1
2
6
5
7
8
9
10
11
12
13
CP401
SC52137-131A
1K2
R488
5
1
2
3
4
HN4A06J
Q408
KTA1024Y
Q413
R471
1K2
R480
470K
JUMPER
R711
470
P
-100
V
(F
N
S
)
C
42
8
5
1
2
3
4
HN4A06J
Q407
R521
3K3(1)
220P-100V
C438
KTC3206Y
Q423
KTA1024Y
Q402
R429
33K
C409
470P-100V
10/100
C447
2K7
R519
560
R522
ZD408
OPEN
D416
OPEN
C
. W
.
V
R
40
3
O
PE
N
OPEN
D409
C420
OPEN
0R47(2)
R468
C
. W
.
V
R
40
2
O
PE
N
C
. W
.
V
R
41
2
1K
(B
)-V
ZD403
OPEN
C
. W
.
V
R
40
1
O
PE
N
0R47(2)
R431
C
. W
.
1K
(B
)-V
V
R
41
1
100N-K
C418
R725
OPEN
Q418
KST5551MTF
DHPTF1608 471P 115T
R450
KST5401MTF
Q403
5
6
7
8
9
10
4
3
2
1
CP403
SC52137-101A
PAGE 1
X
3400
:
INPU
T
1/
1
_
M
1
PAGE 2
AMP B'D 2/2_M1
AMP B'D 1/2
AVR-X3500 AMP SCH
Point A
Point B
Point C
Measurement condition
・
Voltage measurement
No signal
・
Waveform measurement
INPUT: 200mVrms / 1KHz (ANALOG)
Surround mode: MCh Stereo
VOL: 70
Speaker load: 8ohms
DC mode
AC mode
Point C1
Voltage A
1.1V
61.2V
0V
0V
-59.8V
-1.1V
-61.3V
0.6V
56.8V
56.1V
-59.0V
Point A
Point B
Point C1
Point C2
Voltage A
60.4V
-59.0V
26.6V
F4
F5
CN404
CP401
CP402
CP403
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
29