SCH20_AMP1
ANALOG AUDIO
DIGITAL AUDIO
TMDS SIGNAL
ANALOG VIDEO
GND LINE
POWER- LINE
POWER+ LINE
DIGITAL VIDEO
STBY POWER
HDMI
SBR
SBL
FR
SR
C
SL
FL
-B
AGND
AGND
AGND
AGND
AGND
AGND
AGND
A
G
N
D
A
G
N
D
A
G
N
D
A
G
N
D
A
G
N
D
A
G
N
D
10
R428
O
PE
N
D
44
5
2K7
R476
10K
R510
R504
150K
150K
R460
150K
R417
HI
G
H
G
N
D
S
L
DC
_D
E
T4
TR
_T
H
E
R
M
AL
AS
O
R
A
DI
_T
H
ER
M
AL
A
G
N
D
A
G
N
D
A
G
N
D
A
G
N
D
O
PE
N
D
44
7
O
PE
N
D
44
3
2K7
R519
2K7
R432
10
K
R
73
1
MA
IN
1/
3_A
5
C
51
3
330
/6
.3
C
51
6
O
PE
N
C522
OPEN
R409
150K
R528
1K2(1)
R529
1K2(1)
1K2
R705
R461
OPEN
R420
220K
JP537
JUMPER
JP468
OPEN
R445
4.7K(1)
JP416
OPEN
OPEN
C430
C417
OPEN
C416
10/100
R423
10K
C403
10N-K
SR
SL
FR
TR_THERMAL
ASO_DET
DC_DET3
CHASSIS
SB
L_
IN
SB
R
_I
N
CLAMP401
S
L_
IN
S
R
_I
N
C
_I
N
FR
_I
N
AGND
100/25(ROB)
C440
OPEN
C521
100/25(ROB)
C408
33K
R524
R515
10
150K
R496
R452
150K
ZJ5.1A
ZD404
R437
33K
ZD401
ZJ5.1A
2N2-K
C445
820
R527
OPEN
C529
R485
1K2(1)
OPEN
C528
47P-J
C421
100K
R446
R441
1K2(1)
2N2-K
C413
820
R440
47P-J
C405
100K
R402
R719
220
R525
220
R486
1K2(1)
O
PE
N
D
44
6
R704
1K2
R442
1K2(1)
R717
220
R438
220
1K2
R703
JUMPER
D418
JUMPER
D412
JUMPER
D406
Q435
OPEN
D413
OPEN
R447
OPEN
Q411
OPEN
R418
OPEN
D401
OPEN
R403
OPEN
R487
47(1)
220
P
-100
V
(PE
F)
C
42
7
R443
47(1)
C467
OPEN
R507
220K
220K
R520
C499
OPEN
R477
220K
220K
R463
R433
220K
R509
470
220
/25
(K
R
3)
C
43
9
C436
220/50(KR3)
R495
4.7K(1)
JP544
JUMPER
JP520
OPEN
R465
470
R451
4.7K(1)
KTC3964
Q409
R404
4.7K(1)
220/50(KR3)
C404
OPEN
C446
C433
OPEN
22(1)
R502
22(1)
R458
C414
OPEN
R439
22(1)
22(1)
R415
OPEN
C402
R511
0R47(2)
R517
0R47(2)
R474
0R47(2)
2SD2390
Q416
Q410
2SB1560
0R47(2)
R424
C432
10/100
R
45
7
10
K
10
K
R
45
6
R
41
3
10
K
10
K
R
41
4
5K6
R513
D408
1N4148
R466
10K
5K6
R426
1N4148
D402
C
FL
+H
IG
H
B
33(1)
R493
R421
22K
Q405
KST5401MTF
+H
IG
H
B
-H
IG
H
B
DC
_D
E
T3
H
IG
H
G
N
D
-H
IG
H
B
S
R
OPEN
R508
C
FL
RADI_THERMAL
DC_DET4
D
45
8
0
R733
OPEN
IN
P
U
T
1/
1
N
3
SB
L_
IN
SB
R
_I
N
CLAMP402
S
L_
IN
S
R
_I
N
FL_
IN
100/25(ROB)
C424
OPEN
C520
ZD407
ZJ5.1A
R481
33K
R472
10
100K
R490
47P-J
C437
2N2-K
C429
820
R484
OPEN
C527
O
PE
N
D
44
8
R718
220
R482
220
O
PE
N
D
44
4
R491
OPEN
R505
OPEN
Q423
OPEN
D407
OPEN
R530
47(1)
220
P
-100
V
(PE
F)
C
44
3
220
P
-100
V
(PE
F)
C
41
1
C435
OPEN
KTC3964
Q433
4.7K(1)
R489
KTC3964
Q421
220
/25
(K
R
3)
C
42
3
220/50(KR3)
C420
JP518
JUMPER
220
/25
(K
R
3)
C
40
7
R408
4.7K(1)
R422
470
R526
22(1)
R483
22(1)
2SD2390
Q428
Q434
2SB1560
0R47(2)
R467
2SB1560
Q422
2SD2390
Q404
R430
0R47(2)
C448
10/100
R
50
0
10
K
10
K
R
50
1
D414
1N4148
R469
5K6
FR
100(1)
R551
10
K
R
73
2
1
2
3
5
4
A2505-WV05_5P_2.5MM
CP402
R
53
6
2K
7
C
51
5
22
/1
6
C
51
4
330
/6
.3
C
51
7
O
PE
N
HDM
I D
IG
ITAL
CNT
G
9
R410
JUMPER
3K3(1)
R521
470/16(KR3)
C442
R473
33K
R405
OPEN
10/100
C415
R506
22K
R499
47K
22K
R459
22K
R416
C401
100N-K
R406
DHPTF1608 471P
C419
100/100
TR_THERMAL
ASO_DET
DC_DET3
HIGHGND
HIGHGND
-HIGHB
+HIGHB
+HIGHB
CLAMP400
R523
470K
JUMPER
R712
5
1
2
3
4
Q419
HN4A06J
1K2
R514
Q425
KTA1024Y
R497
JUMPER
R453
JUMPER
1K2
R444
470K
R436
JUMPER
R710
1N
-100
V
(PE
F)
C
41
2
1K2
R427
Q401
KTA1024Y
1K2
R401
JUMPER
D417
KTC3206Y
Q436
R516
33K
C441
OPEN
R492
OPEN
Q426
OPEN
JUMPER
D411
3K3(1)
R478
C426
470/16(KR3)
C425
OPEN
Q414
OPEN
OPEN
C422
R448
OPEN
JUMPER
D405
Q412
KTC3206Y
R434
3K3(1)
R429
33K
OPEN
C406
0R47(2)
R512
D415
OPEN
ZD409
OPEN
R518
0R47(2)
C431
10/100
ZD406
OPEN
D410
OPEN
R479
560
R475
0R47(2)
ZD405
OPEN
D404
OPEN
R435
560
ZD402
OPEN
D403
OPEN
0R47(2)
R425
R726
OPEN
Q430
KST5551MTF
22K
R503
C434
100N-K
R498 200K
Q427
KST5401MTF
R494
DHPTF1608 471P
R462
22K
R455
47K
R454
200K
Q415
KST5401MTF
100N-K
C418
DHPTF1608 471P
R450
R419
22K
R412
47K
R724
OPEN
Q406
KST5551MTF
R411
200K
Q417
KSA992F
R407
10K
RADI_THERMAL
DC_DET4
O
PE
N
D
45
7
THERMALDETE
PREGND
HIGHGND
OPEN
R734
-HIGHB
+HIGHB
-HIGHB
R488
1K2
1N
-100
V
(PE
F)
C
44
4
5
1
2
3
4
Q408
HN4A06J
1K2
R471
R480
470K
Q413
KTA1024Y
1N
-100
V
(PE
F)
C
42
8
R711
JUMPER
5
1
2
3
4
HN4A06J
Q407
OPEN
C438
Q424
KTC3206Y
Q402
OPEN
C410
470/16(KR3)
C409
OPEN
C447
10/100
R522
560
ZD408
OPEN
D416
OPEN
C
. W
.
VR403
NVZ6THT-1K
C
. W
.
VR413
OPEN
D409
OPEN
0R47(2)
R468
C
. W
.
VR402
NVZ6THT-1K
C
. W
.
VR412
OPEN
ZD403
OPEN
R431
0R47(2)
C
. W
.
VR401
NVZ6THT-1K
C
. W
.
VR411
OPEN
7CH_AMP
R725
OPEN
Q418
KST5551MTF
Q403
KST5401MTF
5
6
7
8
9
10
4
3
2
1
CP403
A2001-WV10_10P_2.0MM
WIRE_6P_2.0MM
CN404
MA
IN
1/
3_B
3
PAGE 1
4
3
1
2
6
5
7
8
9
10
11
12
13
CP401
A2001-WV13_13P_2.0MM
R449 OPEN
PAGE 2
AMP B'D 2/2_A1
2
1
A2001-WR02_2P_2.0MM
CP503
2
1
A2001-WR02_2P_2.0MM
CP501
PAGE 2
AMP B'D 2/2_M1
R464 PRF18BF471QB5RB 75T
2
1
A2001-WR02_2P_2.0MM
CP502
S940H_X2500H AMP SCH
1.1V
56V
0V
0V
-52.8V
-1.1V
-53V
0.6V
51.6V
51V
-52V
-52V
Point A
Point B
Point C
Point A
Point B
Point C1
Point C2
Voltage A
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
Point C2
Voltage A
F4
F5
CN404
CP401
CP402
CP403
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
28