Sony KV-21FX250 Service Manual ▷ View online
KV-21FX250/21FX250A/21FX250C
KV-21FX250/21FX250A/21FX250C
38
1
|
2 |
3
|
4
|
5
|
6
|
7
|
8
A
—
B
—
C
—
D
—
E
—
F
—
G
—
H
—
I
—
CV BOARD SCHEMATIC DIAGRAM
1 . 5 K
R731
1/4W
1k
R789
200V
PT
0 . 0 4 7
C718
1
2
9
8
7
6
5
4
3
TDA6108AJF/N2
IC751
2SC3311A-QRSTA
Q712
1/4W
22
R736
1/4W
FPRD
22
R796
- 2
2kV
4700p
E
C752
1/2W
100
R764
1
2
3
4
5
5P
CN703
200V
NC
GND
H1
NC
2SC3311A-QRSTA
Q719
5
JW705 &
1/4W
47k
R722
R737
1 . 5
1
2
3
4
4P
CN711
+B
NC
GND
VM OUT
1
1P
TP700
1 . 5
R732
500V
470p
B
C710
10uH
L750
250V
4 . 7
C754
- 2
- 2
470
R792
KTC4370A
Q715
- 2
1/2W
FPRD
100k
R795
1SS244-T-77
D755
1/4W
470
R715
330
R753
1/2W
1k
R757
16V
100
C784
5
JW707
- 2
1
CN704
1000V
1/4W
470
R729
1SS244-T-77
D756
1/4W
47
R712
330
R752
1/2W
1k
R756
1SS244-T-77
D754
2SA1309A-QRSTA
Q718
1
2
3
3P
CN712
GND
NC
VM
1/2W
FPRD
47
R714
1
CN705
GND
R774
150
3W
RS
1/2W
1k
R758
- 2
1/4W
1k
R787
150
R754
100uH
L711
2SC3311A-QRSTA
Q717
1/4W
270
R790
500V
4700p
E
C711
1/4W
47k
R726
- 2
- 2
50V
22
C756
- 2
10uH
L780
- 2
250V
10
C751
16V
470
C725
1/4W
10k
R727
1
1P
TP701
50V
PT
0 . 0 4 7
C712
2W
RS
0 . 5 6
R781
1/4W
47
R735
1
2
3
4
5
6
7
WHT
7P
CN701
GND
B
G
R
GND
1K
9V
160V
10
C719
3
4
5
6
7
8
9
10
11
13
1
GND
GND
1
J752
1/2W
100
R763
1/4W
1k
R788
1/2W
100
R765
1SS133T-77
D780
- 2
- 2
1/4W
100
R730
160V
22
C713
50V
PT
0 . 0 4 7
C723
MTZJ-5.6
D782
1SS133T-77
D783
5
JW706
500V
1000p
B
C753
1SS133T-77
D781
50V
B
C783
2200p
68
R793
160V
100
C714
- 2
1/2W
470k
R780
- 2
1/2W
100
R783
1/2W
560k
R773
250V
4 . 7
C781
KTA1659A
Q713
- 2
W700
16V
100
C722
1/4W
0 . 4 7
R794
47uH
L712
2W
RS
220
R724
GP08DPKG23
D750
1/4W
1k
R725
200V
PT
0 . 1
C720
5
JW708
1/4W
100
R728
68
R791
EY711
SIGN317
CV BOARD
CN801
FV
ECA
CN003
TO A BOARD
TO A BOARD
CN004
TO A BOARD
TO VM NECK
G2
RGB AMPLIFIER
VIDEO AMP
4 . 6
1 3 4 . 0
1 . 9
1 3 6 . 2
2 . 0
2 . 0
1 3 8 . 3
3
2
1
4
6
5
VM DRIVE
VM DRIVE
VM OUT
VM OUT
AMP
AMP
7 1 . 1
1 3 4 . 3
0 . 0
0 . 6
1 3 3 . 8
5 . 5
0 . 0
0 . 0
5 . 2
2 . 2
4 . 9
1 . 5
A-1271-263-A <BX1L>CV
3
2
1
1.64V p-p (H)
1.66V p-p (H)
1.56V p-p (H)
108.3V p-p (H)
4
98.0V p-p (H)
5
98.0V p-p (H)
6
CV BOARD WAVEFORMS
KV-21FX250/21FX250A/21FX250C
KV-21FX250/21FX250A/21FX250C
39
E
B
1
7
1
5
1
4
EB
1
3
B
E
B
E
E
B
EB
EB
28
9
1
4
E
B
1
7
1
5
1
4
E
B
13
B
E
B
E
E
B
EB
EB
1
2
9
8
B
G
R
GND
IK
9V
200V
GND
H1
1000V
GND
GND
VM
GND
+B
GND
VM OUT
E
G2
G1-1
H1
H2
G1-2
KB
KG
KR
G1-3
R5
E
1-687-881-14
(1-722-474-14)
A-1197- 870-A
1
3
4
5
6
7
8
9
10
11
13
GND
A
B
C
NC
NC
NC
NC
D750
IC751
D780
D781
D782
D783
TP700
TP701
Q701
RV750
Q712
Q713
Q715
Q717
Q718
Q719
L711
L712
L750
L751
L752
L753
L754
R712
R713
R714
R715
CN701
CN702
CN703
CN704
CN705
R722
R724
R725
R726
R727
R728
R729
CN711
CN712
R730
R731
R732
J751
R735
R736
R737
C703
C710
C711
A001
C712
A002
C713
A003
C714
A004
A005
R752
A006
R753
A007
R754
C718
A008
C719
R756
R757
R758
C720
C722
C723
R760
C725
R763
R764
R765
R770
R771
R772
R773
R774
R775
R776
R777
R778
R780
R781
R783
R787
R788
R789
C751
C752
C753
JW700
R790
C754
JW701
R791
JW702
R792
C756
JW703
R793
R794
JW704
R795
C759
JW705
JW706
JW707
JW708
JW709
EY701
JW710
EY704
EY705
EY706
EY707
EY708
EY709
C781
C782
C783
C784
PF LP
D754
D756
D755
R796
C785
EY710
L780
1
13
E
J752
(TO
A
BOARD
CN003)
(TO
A
BOARD
CN004)
(TO
A
BOARD
CN801)
(TO
VM
NECK)
(TO G2)
(TO ECA)
(TO ECA)
EY
71
1
E
B
1
7
1
5
1
4
EB
1
3
B
E
B
E
E
B
EB
EB
28
9
1
1
A
B
C
D
E
2
3
4
5
B
E
1
7
1
5
1
4
B
E
1
3
B
E
B
E
B
E
B
E
B
E
2
1
8
9
G1-3
KR
KG
KB
G1-2
H2
H1
G1-1
G2
E
GND
GND
VM OUT
+B
GND
VM
GND
1000V
200V
GND
H1
B
G
R
GND
9V
IK
E
1-687-881-14
(1-722-474-14)
R5
1
3
4
5
6
7
8
9
10
11
13
GND
C
B
A
NC
NC
NC
NC
R794
C725
C719
C711
R725
L750
D781
R776
C720
A004
R730
R714
RV750
R787
C722
A006
J751
CN702
Q715
D750
JW706
R774
A003
CN711
R712
TP701
JW705
C752
R781
R773
R765
C713
R729
L754
TP700
C782
R791
R788
R753
R735
CN703
Q717
JW707
C753
R783
R775
C714
CN712
R713
Q701
JW704
R771
R756
A001
R726
L751
D782
JW708
R790
R777
A005
R731
R715
Q712
R793
R770
A008
C710
R724
L712
D780
R795
C751
R780
R763
R757
C712
R727
L752
D783
C784
R792
R789
R754
R737
CN705
Q719
C783
C723
A007
R736
CN704
Q718
C759
R772
R764
R758
A002
R728
L753
C756
R760
C718
C703
R722
L711
IC751
C781
C754
R778
R752
R732
CN701
Q713
D754
D756
D755
R796
C785
L780
M
D
D
E
13
1
J752
(TO
A
BOARD
CN003)
(TO
VM
NECK)
NECK)
(TO ECA)
(TO G2)
(TO
A
BOARD
C
N801)
(TO
A
BOARD
CN004)
(TO ECA)
R766
R767
R768
R784
R785
R786
1
A
B
C
D
E
2
3
4
5
[RGB AMPLIFIER]
CV
CONDUCTOR SIDE
COMPONENT SIDE
[RGB AMPLIFIER]
CV
40
KV-21FX250/21FX250A/21FX250C
KV-21FX250/21FX250A/21FX250C
1
|
2 |
3
|
4
|
5
|
6
|
7
|
8
A
—
B
—
C
—
D
—
E
H1 BOARD SCHEMATIC DIAGRAM
S006
S004
S002
1/4W
RN
1%
330
R003
S003
1
2
3
3P
CN001
GND
GND
KEY
1/4W
RN
100
R001
1%
1/4W
RN
1%
220
R002
1/4W
RN
1%
1k
R006
1/4W
RN
1%
680
R005
S005
S001
1/4W
RN
1%
470
R004
1 . 5 k
R007
S007
GATE
CN005
.
H1
PROGRAM -
V O L -
TO A BOARD
WEGA
VIDEO IN
VOL +
PROGRAM +
A-1271-264-A <BX1S>H1
FRONT CONTROL
MODE
SOUND
1
3
10
CN001
S001
S002
S003
S004
S005
S006
S007
R001
R002
R003
R004
R005
R006
R007
SOUND
MODE
MODE
WEGA GATE
VIDEO IN
VOL -
VOL +
PROGRAM -
PROGRAM +
KEY
GND
1-870-841-12
(1-727-645-12)
R2
A-1198- 754-A
(WHITE)
PF LP
(TO A
BOARD
CN005)
BOARD
CN005)
1
3
GND
(GRAY)
1
3
S001
S002
S003
S004
S005
S006
S007
1
A
2
3
4
CN001
S001
S002
S003
S004
S005
S006
S007
R001
R002
R003
R004
R005
R006
R007
SOUND
MODE
MODE
WEGA GATE
VIDEO IN
VOL -
VOL +
PROGRAM -
PROGRAM +
GND
KEY
(1-727-645-12)
1-870-841-12
R2
M
D
D
1
3
GND
1
A
2
3
4
[FRONT CONTROL]
COMPONENT SIDE
H1
[FRONT CONTROL]
CONDUCTOR SIDE
H1
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