JVC AV-25L31B/C-PH Schematics
BLOCK DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM(1/3
AV-25L31B AV-25L31B
)
FRONT INPUT
(
)
VIDEO-3
VIDEO-1
INPUT
COMPONENT
(
VIDEO-2
INPUT
OUTPUT
9.0V
SPEAKER OUT
5.0V
BASS
0V
0V
5.0V
MAIN PWB ASS’Y(1/3
SCH-1074A-H2
0V
8.3V
7.4V
0V
3.7V
3.7V
3.7V
3.7V
0.1V
4.9V
4.3V
4.9V
4.4V
4.9V
5.3V
4.3V
4.4V
7.0V
5.9V
4.9V
4.3V
4.3V
5.7V
4.9V
2.6V
2.1V
4.6V
-1.0V
5.0V
)
4.4V
4.9V
4.3V
9.0V
9.0V
4.4V
5.0V
4.2V
4.2V
4.3V
4.3V
0V
1.9V
1.7V
4.1V
4.2V
3.4V
4.2V
5.1V
1.7V
2.3V
0V
-0.4V
0V
-0.4V
0V
0V
0.6V
0V
0V
0.6V
3.0V
2.4V
2.6V
1.9V
4.2V
1.9V
2.6V
2.6V
3.7V
0V
5.0V
1.5V
0.2
V
5.0
V
5.0V
0V
0V
2.9V
2.9V
2.4V
2.4V
3.3V
2.7V
4.8V
5.0V
3.3V
5.0V
2.7V
3.3V
0V
0V
5.0V
33.8V
5.0V
5.0V
1.7V
1.9V
5.0V
TO CRT SOCKET
PWB CN10T
3.3V
3.3V
5.0 5.0
V
V
3.3V
1.8V
1.6V
3.3V
3.3V
5.0
2.8
3.3V
0V
V
V
1.5V
9.0V
2.2V
0V
4.6V
1.9V
1.7V
5.0V
K101
QQR1214-001Y
R005 X
3.3V1.6V0V 1.5V 0V 3.3V 0V 5.1V2.7V2.8V 2.7V
0V
0V
8.3V
6.3V
2.5V
4.9V
3.1V
1.8M
R749
2.6V2.6 4.2V2.4V1.9
V
3.8V
3.0V
5.0V
0V
R748
V
4.0V
0V
5.0V
NOTE
X
BW
0
1
2
3
5
7
2.2M
9.0V
0V
4.3V
8.3V 8.3V
3.7V1.5V
0V
2.0V
0.8V
0.7V
1.9V
1.9
V
: OPTION(NON MOUNT
: BUS WIRE
: NRSA63J-0R0X
: 2SC2412K/QR/-X
: 2SA1037AK/QR/-X
: MA111-X
: DTC124EKA-X
: 2SC1740S/QR/-T
2.0V
3.3V
3.5V
2.6V
3.8V
4.6V
3.6V
0
1.9
1.9
V
V
V
0V
1.4V
0.6V
2.1V
IC701
2.8Vp-p(H
IC701
0.55Vp-p(H
IC701
3.4Vp-p(H
IC701
3.6Vp-p(H
)
3.9V
21
IC701
)
1.0Vp-p(V
22
IC701
)
1.0Vp-p(V
33
)
43
)
51
)
IC701
1.04Vp-p(H
IC701
1.6Vp-p(H
IC701
2.6Vp-p(H
42
)
47
)
52
)
53
)
TO
SPEAKER
)
4.4V
7
IC801
)
1.2Vp-p(H
23
IC801
)
2.2Vp-p(H
27
IC801
)
2.1Vp-p(H
37
IC801
)
2.2Vp-p(H
No.51905B No.51905B
78
AV-25L31B AV-25L31B
MAIN PWB CIRCUIT DIAGRAMS(2/3,3/3
)
DEG COIL
QQW0119-001
L01
)
0.7Vp-p(V
2
IC401
)
2Vp-p(V
9.0V
0V
IC401
30Vp-p(V
20Vp-p(V
)
1.8k
R354
6
)
14.4V
0.3
V
5
IC401
)
60Vp-p(V
7
5.3V
3.3V
IC401
5Vp-p(V
)
0.9V
-13.1V
0.3V
-15.2V
14.6V
TO
MAIN
PWB
CN00T
C309
560p/50
C353
1/250
L524
QQLZ034-240
R373
120k
3
IC401
1
IC401
CRT SOCKET
C354
QCZ0131-222
MAIN(CRT SOCKET
PWB ASS’Y(3/3
SCH-1074A-H2
)
V01
A60LVY196X
)
0V
19.6V
291V
0V
2.4V
MAIN PWB ASS’Y(2/3
SCH-1074A-H2
C955
QCB32HK-471Z
CP952
K953
RGP10J-5025-T3
31DF6N-FC5
)
D956
QEZ0203-227
27.7V
Q522
2.4Vp-p(H
Q521
45Vp-p(H
ICP-N50-Y
IC PROTECT
C960
0V
B
C
C956
QETN1VM-227Z
0V
0V
0.6V
T551 T551
)
150Vp-p(H
T551 T551
)
8Vp-p(H
9.8
5.1
V
134.2V
26.6V
150Vp-p(H
96Vp-p(H
2.7
V
V
T551
QQH0097-001-KD
FBT
R413
2.7
2.0
2.0V
9.0V
1.9V
6.6V
-0.1V
V
2.5V
2.4
V
R526
270
4500p
1.5k VH MPP
T551
C524
25Vp-p(H
R493
1/2W
4
33k
D521
RH3G-F1
D522
31DF6N-FC5
)
R494
47
3W OMF
T551
QQR1138-001
C525
0.011
1.5k VH MPP
90Vp-p(H
L480
QENC2AM-225Z
8
)
C529
C528
0.22
250V MPP
T551
1140Vp-p(H
10
)
R528
0.47
2W OMF
R529
0.47
2W OMF
L523
QQR1137-005
R542
120k
1/2W
R541
120k
1/2W
FOR ADJ.
R591
4.7k
1/2W
R592
3.9
C592
QETM2CM-227
134.2V
R593
820
133.8V
0V
5.0V
0V
CONNECTOR
R414
12
R524
82
7
)
2
)
T521
QQR1229-001
20.6V
0V
9.1V
X
BW
Y956
Y955
6
)
9
)
QQR1214-001Y
B
)
Q521
2Vp-p(H
DY01
QQD0078-001
DEF YOKE
No.51905B No.51905B
910
NOTE
: OPTION(NON MOUNT
X
: BUS WIRE
BW
: NRSA63J-0R0X
0
: 2SC2412K/QR/-X
1
: 2SA1037AK/QR/-X
2
: MA111-X
3
)
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