SCH21 AMP1
VIDEO SIGNAL
CMPONENT(Y)
STBY POWER
ANALOG AUDIO
DIGITAL AUDIO
TMDS SIGNAL
GND LINE
POWER- LINE
POWER+ LINE
SBR
AGND
SBL
FR
SR
C
SL
FL
AGND
AGND
AGND
AGND
AGND
AGND
A
G
N
D
SB
L_
IN
SR
_I
N
A
G
N
D
D
480
3
O
PE
N
C
482
1
220
/16
-R
A
2
+H
IG
H
B
SL
TR
_T
HER
M
A
L
DC
_D
E
T3
C
C
A
G
N
D
SB
L_
IN
SR
_I
N
A
G
N
D
A
G
N
D
C
_I
N
D
481
5
O
PE
N
D
481
0
O
PE
N
220
/16
-R
A
2
C
484
0
C
480
6
220
/16
-R
A
2
+H
IG
H
B
H
IG
H
G
N
D
-HI
G
HB
C
483
0
330
/6
.3
(6
.3
*11
)
C
483
4
O
PE
N
MODEL OPTION
MODEL OPTION
C4843
OPEN
OPEN
C4824
C4816
47/50-PKR3
R4846
5K6(1)
C4817
OPEN
C4800
100N-K
C4801
10N-K
SR
SL
ASO_DET
DC_DET3
DC_DET4
* PTC OPTION
PREGND
HIGHGND
-HIGHR
-HIGHB
+HIGHB
SR
SL
SBR
_I
N
A
G
N
D
A
G
N
D
S
L_
IN
C_IN
FL_I
N
C4844
470P
C4841
47/50(6.3*11)-RA3
C4825
470P
C4822
47/50(6.3*11)-RA3
C4810
470P
R4917
1K
ZD4806
ZJ5.1A
R4871
1K
R4850
100K
R4807
100K
ZD4800
ZJ5.1A
R4930
150
R4931
270
C
484
5
2200
P
-K
-160
8
C4838
100P-J
R4895
1K2
Q4820
KTA1024Y
R4886
150
R4887
270
R4851
JUMPER
Q4810
KTA1024Y
R4839
150
R4808
JUMPER
C4804
100P-J
R4802
1K2
R4927
220
R4883
220
C
482
3
220
/25
-PK
R
3
MODEL OPTION
D
480
2
O
PE
N
C
480
8
220
/25
-PK
R
3
R4933
47(1)
Q4828
KTC3206Y
Q4819
KTC3206Y
R4842
47(1)
R4924
560
R4923
220K
R4910
2K7
R4909
220K
R4833
560
R4832
OPEN
R4819
2K7
R4818
OPEN
R
491
9
O
PE
N
R4898
5K6(1)
R4896
5K6(1)
OPEN
R4875
R4806
5K6(1)
R4803
5K6(1)
R4929
22(1)
C4837
OPEN
R4885
22(1)
C4827
OPEN
R4857
22(1)
C4812
OPEN
R4813
22(1)
R4912
0R22(2)
R4913
OPEN
R4876
0R22(2)
R4864
0R22(2)
R4865
OPEN
R4877
OPEN
C
481
4
10
/100
-PK
R
3
R4829
0R22(2)
R4830
OPEN
R
490
3
10
K
R
490
4
10
K
2
1
TP4804
2
1
TP4802
NR
1710
O
N
LY
R
481
1
10
K
R
481
2
10
K
R4911
10K
R4914
5K6
C4835
100N-K
R4866
5K6
R4859
270K
C4815
100N-K
R4815
270K
R4820
10K
C
Q4803
KSA992F
R4817
22K
-HI
G
HR
H
IG
H
G
N
D
-HI
G
HB
SR
DC
_D
E
T4
ASO
FL
FR
R5098
0
R4874
-HIGHB
HIGHGND
+HIGHB
FR
FL
A
G
N
D
SBR
_I
N
S
L_
IN
A
G
N
D
FR
_I
N
A
G
N
D
C4807
47/50(6.3*11)-RA3
R4899
100K
ZD4803
ZJ5.1A
R4826
1K
R4900
JUMPER
C4819
100P-J
R4845
1K2
C
482
6
2200
P
-K
-160
8
Q4800
KTA1024Y
R4840
270
C
481
1
2200
P
-K
-160
8
D
481
4
O
PE
N
C
484
2
220
/25
-PK
R
3
D
480
9
O
PE
N
R4836
220
R4889
47(1)
Q4809
KTC3206Y
R4862
2K7
R4880
560
R4861
OPEN
R4879
OPEN
Q4815
OPEN
R
482
8
O
PE
N
C4846
OPEN
R4905
22(1)
R4838
22(1)
C4803
OPEN
C
484
8
10
/100
-PK
R
3
C
482
9
10
/100
-PK
R
3
R4920
0R22(2)
R4921
OPEN
R4821
0R22(2)
R4822
OPEN
NR
1710
O
N
LY
NR
1710
O
N
LY
R
485
5
10
K
R
485
6
10
K
2
1
TP4800
R4907
270K
R4863
10K
R4823
5K6
Q4811
KSA992F
R4847
33(1)
R
489
0
1K
5
RAD
I_
THER
M
A
L
C
483
1
330
/6
.3
(6
.3
*11
)
R
489
1
10
K
R
489
2
10
K
C
483
2
22
/1
6
C
483
3
O
PE
N
BKT4800
R4868
OPEN
7
4
5
6
2
3
1
8
CP4802
A2505-WV08
1
2
3
5
4
CP4800
A2505-WV05
SP
K
1/1
A
6
1
2
3
4
5
6
CN4800
D
IG
IT
A
L
D
IG
IT
A
L
C
N
T
F9
R4932
1K2(1)
R4925
390K
R4926
33K
C4808 C4823 C4842
* MODEL OPTION
R4908
22K
R4902
47K
TR_THERMAL
R4858
22K
R4814
22K
R4805
56K
ASO_DET
TR_THERMAL(B)
RADI_THERMAL(A)
THERMALDETE
PRF18BG471QB5RB-65T
NR1510
PRF18BF471QB5RB-75T
NR1710
AMP 2/2 A1
AV 1/4 N3
Q4825
KSA992F
R4916
1K2
R4894
100K
R4881
390K
R4882
33K
R4870
1K2
Q4816
KSA992F
AGND
R4841
1K2(1)
R4834
390K
R4835
33K
R4801
100K
NR1510
NR1710
100UF/50V(PKR3)
220UF/25V(PKR3)
R4928
220
R4922
3K3(1)
Q4824
OPEN
C4839
220P-100V
R4918
33K
C4836
47/50-PKR3
R4893
1K8
R4884
220
R4872
33K
1
2
3
C
. W
.
VR4801
NVZ6THT
R4849
5K6(1)
R4831
3K3(1)
C4809
OPEN
C4805
220P-100V
R4800
1K8
Q4827
2SB1560
D4816
OPEN
D4813
OPEN
ZD4807
OPEN
R4901
680K
D4806
OPEN
ZD4805
OPEN
R4852
680K
D4805
KDS160
C
481
3
10
/100
-PK
R
3
D4804
OPEN
ZD4802
OPEN
Q4802
2SD2390
D4800
KDS160
ZD4801
OPEN
Q4823
KST5551MTF
R4906
22K
R4915
OPEN
Q4821
KST5401MTF
FR
R4867
OPEN
Q4812
KST5401MTF
R4854
47K
R4860
22K
R4853
100(1)
C4818
100/100
R4810
47K
R4816
22K
Q4804
KST5551MTF
AMP 2/2 M1
DC_DET3
DC_DET4
R4874
PRF18BF471QB5RB
R4873
OPEN
MP
SP
K
1/1
A
3
4
3
1
2
6
5
7
8
9
10
11
12
13
CP4801
R4888
1K2(1)
R4844
100K
R4825
1K2
Q4806
KSA992F
1
2
3
C
. W
.
VR4802
NVZ6THT
R4878
3K3(1)
R4843
1K8
220P-100V
C4820
R4827
33K
R4837
220
Q4805
OPEN
C4802
47/50-PKR3
1
2
3
C
. W
.
NVZ6THT
VR4800
C
484
7
10
/100
-PK
R
3
C
482
8
10
/100
-PK
R
3
Q4822
2SD2390
D4812
KDS160
ZD4808
OPEN
Q4818
2SB1560
Q4813
2SD2390
D4811
OPEN
ZD4804
OPEN
R4809
680K
Q4808
2SB1560
D4801
OPEN
KST5551MTF
Q4814
FL
Q4801
KST5401MTF
R4824
OPEN
R4869
OPEN
Q4826
KSA992F
R4897
DHPTF1608-105T
KSA992F
Q4817
R4848
DHPTF1608-105T
R4804
DHPTF1608-105T
NR1710, NR1510 AMP B'D 1/2
Q4807
KSA992F
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
F1
F2
CN4800
CP4800
CP4802
CP4801
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
29