SCH19_AMP1
ANALOG AUDIO
DIGITAL AUDIO
TMDS SIGNAL
VIDEO SIGNAL
GND LINE
POWER- LINE
POWER+ LINE
COMPONENT (Y)
SBR
AGND
SBL
FR
SR
C
SL
FL
SR
SL
SR
SL
AGND
AGND
AGND
AGND
AGND
AGND
A
G
N
D
A
G
N
D
A
G
N
D
A
G
N
D
D
480
3
O
PE
N
+H
IG
H
B
-H
IG
H
B
S
R
DC
_D
E
T4
TR
_T
H
E
R
M
AL
AS
O
DC
_D
E
T3
FR
FL
C
FL
C
FR
SPK
_S
M
PS
1
/2
O
5
A
G
N
D
A
G
N
D
A
G
N
D
A
G
N
D
A
G
N
D
A
G
N
D
D
481
5
O
PE
N
D
481
0
O
PE
N
47
/25_
K
O
S
H
IN
C
480
6
+H
IG
H
B
H
IG
H
G
N
D
-H
IG
H
B
C
483
0
330
/6
.3
(6
.3
*11
)
SPK
_S
M
PS
1
/2
A
3
AV 1/3 O3
C4843
OPEN
5K6(1)
R4846
OPEN
C4817
100N-K
C4800
C4801
10N-K
ASO_DET
DC_DET4
DC_DET3
TR_THERMAL
ASO_DET
DC_DET3
THERMALDETE
* PTC OPTION
PREGND
HIGHGND
HIGHGND
-HIGHR
-HIGHB
+HIGHB
SB
L_
IN
SB
R
_I
N
S
R
_I
N
S
L_
IN
FL_
IN
470P-500V
C4844
47/50 (RA3)
C4841
470P-500V
C4825
47/50 (RA3)
C4822
C4810
470P-500V
R4917
1K
ZJ5.1A
ZD4806
R4871
1K
R4850
100K
100K
R4807
ZJ5.1A
ZD4800
2N2-K
C4845
150
R4930
270
R4931
100P-J
C4838
KTA1024Y
Q4820
R4895
1K2
2N2-K
C4826
150
R4886
R4887
270
Q4810
KTA1024Y
R4851
JUMPER
R4839
150
100P-J
C4804
JUMPER
R4808
1K2
R4802
R4927
220
R4883
220
C
482
3
100
/50_
K
O
S
H
IN
100
/50_
K
O
S
H
IN
C
480
8
D
480
2
O
PE
N
R4933
47(1)
Q4828
KTC3206Y
KTC3206Y
Q4819
47(1)
R4842
220K
R4923
560
R4924
220K
R4909
2K7
R4910
R4832
220K
R4833
560
R4818
220K
R4819
2K7
O
PE
N
R
491
9
R4896
5K6(1)
R4898
5K6(1)
47
/25_
K
O
S
H
IN
C
482
1
R4875
OPEN
R4806
5K6(1)
R4803
5K6(1)
22(1)
R4929
C4837
OPEN
C4827
OPEN
22(1)
R4885
22(1)
R4857
C4812
OPEN
R4813
22(1)
C4848
OPEN
R4912
0R22(2)
R4913
OPEN
O
PE
N
C
482
9
0R22(2)
R4864
OPEN
R4865
0R22(2)
R4876
OPEN
R4877
O
PE
N
C
481
4
0R22(2)
R4829
R4830
OPEN
R
490
3
10
K
10
K
R
490
4
2
1
TP4804
2
1
TP4802
10
K
R
481
1
R
481
2
10
K
R4911
10K
R4914
5K6
C4835
100N-K
R4866
5K6
100N-K
C4815
270K
R4859
R4815
270K
R4820
10K
C
KSA992F
Q4803
R4817
22K
-H
IG
H
R
HI
G
H
G
N
D
S
L
R
A
DI
_T
H
ER
M
AL
R5098
0
DC_DET4
R4874
-HIGHB
+HIGHB
SB
L_
IN
SB
R
_I
N
S
L_
IN
S
R
_I
N
C
_I
N
FR
_I
N
47/50 (RA3)
C4807
R4899
100K
ZJ5.1A
ZD4803
R4826
1K
R4900
JUMPER
100P-J
C4819
1K2
R4845
2N2-K
C4811
KTA1024Y
Q4800
R4840
270
C
484
2
100
/50_
K
O
S
H
IN
D
481
4
O
PE
N
D
480
9
O
PE
N
R4836
220
R4889
47(1)
Q4809
KTC3206Y
220K
R4861
2K7
R4862
220K
R4879
R4880
560
47
/25_
K
O
S
H
IN
C
484
0
O
PE
N
R
482
8
C4846
OPEN
22(1)
R4905
OPEN
C4803
R4838
22(1)
R4920
0R22(2)
R4921
OPEN
0R22(2)
R4821
OPEN
R4822
10
K
R
485
5
R
485
6
10
K
2
1
TP4800
270K
R4907
R4863
10K
R4823
5K6
Q4811
KSA992F
R4847
33(1)
R
489
0
1K
5
C
483
1
330
/6
.3
(6
.3
*11
)
C
483
4
O
PE
N
R
489
1
10
K
R
489
2
10
K
BKT4800
R4868
OPEN
7
4
5
6
2
3
1
8
CP4802
YMW025-08R
1
2
3
5
4
YMW025-05R
CP4800
HD
M
I B
'D
18
/21_
K
9
PAGE 2
AMP B'D 2/2_A1
1K2(1)
R4932
470K
R4925
R4926
33K
C_IN
C4824
OPEN
47/50_KOSHIN
C4816
R4908
22K
R4902
47K
TR_THERMAL
22K
R4858
R4814
22K
R4805
56K
NR1508 PRF18BG471QB5RB-65T
NR1608 PRF18BF471QB5RB-75T
Q4825
KSA992F
1K2
R4916
R4894
100K
R4881
470K
R4882
33K
Q4816
KSA992F
1K2
R4870
AGND
1K2(1)
R4841
R4834
470K
R4835
33K
100K
R4801
3K3(1)
R4922
R4928
220
220P-100V
C4839
Q4824
KTC3964
R4918
33K
47/50_KOSHIN
C4836
R4893
1K8
R4884
220
R4872
33K
1
2
3
C
. W
.
VR4801
1K(B)-V
5K6(1)
R4849
C4809
OPEN
3K3(1)
R4831
220P-100V
C4805
1K8
R4800
C4847
OPEN
OPEN
D4816
Q4827
2SB1560
D4813
OPEN
ZD4807
OPEN
680K
R4901
C
482
8
O
PE
N
OPEN
D4806
OPEN
ZD4805
KDS160
D4805
680K
R4852
C
481
3
O
PE
N
OPEN
D4804
ZD4802
OPEN
KDS160
D4800
2SD2390
Q4802
ZD4801
OPEN
KST5551MTF
Q4823
R4906
22K
OPEN
R4915
KST5401MTF
Q4821
FR
R4867
OPEN
C4818
100/100(10*16)
Q4812
KST5401MTF
100(1)
R4853
47K
R4854
22K
R4860
Q4804
KST5551MTF
R4810
47K
R4816
22K
PAGE 2
AMP B'D 2/2_M1
R4873
OPEN
R4874
PRF18BF471QB5RB-75T
MP
RADI_THERMAL
4
3
1
2
6
5
7
8
9
10
11
12
13
CP4801
R4888
1K2(1)
R4844
100K
Q4806
KSA992F
R4825
1K2
1
2
3
C
. W
.
VR4802
1K(B)-V
220P-100V
C4820
Q4815
KTC3964
R4843
1K8
R4878
3K3(1)
47/50_KOSHIN
C4802
Q4805
KTC3964
R4827
33K
R4837
220
1
2
3
C
. W
.
VR4800
1K(B)-V
KDS160
D4812
Q4822
2SD2390
OPEN
ZD4808
OPEN
D4811
Q4813
2SD2390
Q4818
2SB1560
OPEN
ZD4804
OPEN
D4801
Q4808
2SB1560
680K
R4809
KST5551MTF
Q4814
FL
KST5401MTF
Q4801
R4824
OPEN
C
483
2
22
/1
6
C
483
3
O
PE
N
R4869
OPEN
KSA992F
Q4826
R4897
PRF18BC471QB5RB
KSA992F
Q4817
PRF18BC471QB5RB
R4848
PRF18BC471QB5RB
R4804
NR1608, NR1508 AMP B'D 1/2
KSA992F
Q4807
7CH_AMP 1/2
REF : 4800-5199
1.1V
44V
0V
0V
-41.5V
-1.1V
-42V
0.6V
39.6V
39.1V
-41V
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
E2
E3
CN4800
CP4800
CP4802
CP4801
28
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating