SONY KV-VF21M40, KV-VF21M70, KV-VF21M77 Service Manual
SERVICE MANUAL
BC-4A
CHASSIS
MODEL COMMANDER DEST. CHASSIS NO.
KV-VF21M40
KV-VF21M70
KV-VF21M70
RM-956 E SCC-P10A-A
RM-956 ME SCC-P11A-A
RM-956 JE SCC-P12A-A
EJECT
Z
PIC MODE
TIMER REC
G-CODE
TAPE SPEED
zREC
INDEX
.>
X PAUSE
REW
PLAY
mFFM
H
ENTER
x STOP
COUNTER RESETtMENU
1
5
4
70C9
8
-/--
2
EJECT
Z
PIC MODE
TIMER REC
ON/OFF
A/B
GAME
32
6
PROGR
G-CODE
TAPE SPEED
zREC
INDEX
.>
X PAUSE
REW
PLAY
mFFM
H
ENTER
x STOP
COUNTER RESETtMENU
1
5
4
70C9
8
-/--
2
PROGR
ON/OFF
GAME
32
6
MODEL COMMANDER DEST. CHASSIS NO.
KV-VF21M70
KV-VF21M77
RM-956 HK SCC-P09B-A
RM-955 HK SCC-P09A-A
RM-955
RM-956
∗ Please file according to model size. ....
21
PAL NTSC
®
(VF21M77 ONLY)
TRINITRON® COLOR VIDEO TV
SPECIFICATIONS
TV Section
Television system B/G, I, D/K, M
Color system PAL/SECAM and
NTSC
3.58
/NTSC
Bilingual system NICAM bilingual I
(VF21M77 ONLY)
Channel coverage See “Receivable
channels and channel
display”
Picture tube Trinitron
21 inches (approx. 50.7
cm measured
diagonally)
Antenna in 75-ohm antenna socket
for VHF/UHF
Video Section
Format VHS standard
Video recording system
Rotary 2-head helical
scanning system
Audio recording system
Monaural
Video signal PAL/MESECAM/
NTSC
Tape speed PAL/MESECAM
SP: 23.39 mm/sec.
LP: 11.70 mm/sec.
NTSC
SP: 33.35 mm/sec.
EP: 11.11 mm/sec.
Maximum recording time
PAL/MESECAM
SP: 240 minutes with
E-240
LP: 480 minutes with
E-240
NTSC
SP: 180 minutes with
T-180
EP: 540 minutes with
T-180
4.43
Inputs and Outputs
Inputs t1, t2/GAME IN
(video): phono jack
1 Vp-p, 75 ohms,
unbalanced,
sync negative
9 (audio): phono jack
Input level:
500 mVrms
Headphones jack Minijack
General
Clock Quartz locked
Power requirements 110-240 V AC, 50/60Hz
Power consumption 123 W
Operating temperature
5˚ C to 40˚ C
(41˚ F to 104˚ F)
Storage temperature –20˚ C to 60˚ C
(–4˚ F to 140˚ F)
Dimensions 489 x 500 x 485 mm
(19 3/8 x 19 3/4 x 19 1/
inches)
Mass 27.5 kg (60 lb 10 oz.)
Supplied accessories
8
Remote control
Two R6 (size AA)
batteries
Stabilizer band
Two clamps
Two wood screws
AC plug adaptor
(E/ME/JE model)
These operating
instructions
Design and specifications are subject to
change without notice.
– 2 –
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
22
A
B
C
D
E
F
G
H
J
K
L
M
N
O
TO MA10(1/3)BOARD CN001 TO MA10(1/3)BOARD CN1003 TO MA10(1/3)BOARD CN002
RE LINE L
RE LINE V
NC
101112
JL35
JL36
VIDEO(PB)
L304
JW(5)
D305 D307
1SS119 1SS119
R307
1M
:CHIP
C327
1
0.0047
B:CHIP
9V
4.4
1.2
0.7
C805
33
160V
D805
CN303
NC
13
R333
2.2M
:CHIP
B:CHIP
13P
R356
1k
:CHIP
5.8
C309
3.3
C503
0.01
R829
4.7k
C824
0.01
1.2kV
C827
0.047
630V
R822
330
:FPRD
:PP
C806
470p
500V
VIDEO
R301
2.2k
:CHIP
Q305
2SB709A
BUFFER
R360
5.1
1k
:CHIP
R309
22k
:CHIP
R312
10k
:RN-CP
R320
1k
:CHIP
C321
0.1
MTZJ-T-77-9.1
25V
F:CHIP
R327
470 :CHIP
R336
2.2k
:CHIP
R340 R341
1k
:CHIP
D308
MTZJ-T-77-3.9B
5.9
C501
220
16V
0.1
R509
10k
D502
PROTECT
R513
4.7k
:CHIP
2SC2412K
V-PROTECT
R517
4.7k
:CHIP
UN2211-TX
V-PROTECT
:CHIP
MTZJ-T-77-5.6
135V
D803
RGP10GPKG23
R815
JW(7.5)
C810
0.0047
9.2
500V
E
5.1
S
D806
2SK2251-01
1SS119
PINOUT
DUMPER
C816
470p
D810
ERC06-15S
DUMPER
3.5
123456789101112131415161718192021222324
1.9
16V
4.3
4.0
2.4
3.6
3.5
6.0
C317
10
7.7
100
3.4
3.7
3.9
1.8
2.0
2.1
G
2.1
R504
100k
:CHIP
-0.1
R503
22k
:CHIP
IC501
LA7840L
V-OUT
VCC
R507
1k
:CHIP
100
:HT
B
R343
100
:CHIP
R357
2.2k
:CHIP
C502
REF
C514
0.01
F:CHIP
APED
C1 IN
ABLIN
Y1 IN
(VSAW)
MONOUT
COMBC IN
YCLAMP
COMBY IN
GND1
EW
IREF
3
VD+
4
VD-
VMOUT
REG
SSCP
HP/PROTECT
5
HD
AFCFIL
IKIN
6
ROUT
7
GOUT
8
BOUT
IC301
CXA2130S
Y/C/J
R358
2.7k
:CHIP
1
IN
R508
1k
:CHIP
R514
10k
:CHIP
C510
0.01
F:CHIP
C301
4.7
C308
0.47
B:CHIP
C313
0.1 B:CHIP
R314
100 :CHIP
R316
100 :CHIP
D304
R324
PROTECT
:CHIP
R
R338
R337
2.2k
:CHIP
2.2k
:CHIP
R342
100
100
:CHIP
:CHIP
R502
R520
47k
47k
:CHIP
:CHIP
0.1
Q502Q501
16 15
-15V
OUT
1 2 3 4 5 6 7
0.4
14.0 2.5 2.4 -11.6
R510
C505
0.1
100k
B:CHIP
:CHIP
C507
C509
0.47
:MPS
R516
2.2
:FPRD
R518
10k
:CHIP
-13V
R807
R821
6.8
:FPRD
14
Q801
D811
RGP15GPKG23
DUMPER
2
1
C803
0.68
250V
L805
10mH
C819
0.82
250V
C817
JW(5)
C807
250V
R826
1
4
1
1k
2W
:RS
L808
470µH
100
1/2W
:FPRD
L803
10mH
:LHL10
L804
4.7mH
:LHL08
C812
0.022
200V
XTAL1
XTAL2
XTAL3
(APCFIL)
(SECAM)
TV IN
2
ABLFIL
VCR/FR IN
2
GND2
EB-YIN
ER-YIN
EYIN
YUVSW
SDA
SCL
VCC
4.6
R2IN
4.6
G2IN
4.6
B2IN
0.1
YS2/YM
R1IN
G1IN
B1IN
YS1
135V
5.9
5.9
0.1
Q304
2SD601A
VM SW
+15V
GP08DPKG23
R512
220
2W
:RS
JL103
2
1
T802
HLT
123
R364
680
X301
:CHIP
X302
2.9
0.1
C306
220p
5.1
CH:CHIP
C310
10
5.2
8.7
5.2
C312
4.7
R317
100
4.9
:CHIP
4.9
R321
100 :CHIP
C320
0.01 F:CHIP
C322
0.01 F:CHIP
C323
0.01 F:CHIP
R331
4.7k :CHIP
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
Q302
2SC2412K
BUFFER
5.2
C328
10
R347
16V
1k
:CHIP
BOOST
C504
100
:HT
D501
PROTECT
MTZJ-T-77-18B
D503
PUMPUP
C508
0.1
C515
100V
:PT
250V
R515
4.7
2W
:RS
C801
R802
0.0047
200V
:PT
R805
15k
:RN
R808
56k
1/2W
:RN
GP08DPKG23
4
DY
H.DY H.DY V.DY V.DY
4.43
3.58
R303
C307
10k
0.22
:CHIP
C314
10
16V
:BP
D301
MTZJ-T-77-5.6
MTZJ-T-77-5.6
C318
100 25V
R323
560 :CHIP
R326
560 :CHIP
R329
560 :CHIP
R330
0
:CHIP
R352
R350
470
18k
:CHIP
:CHIP
R349
6.6
3.1
0
:CHIP
R351
10k
:CHIP
2.5
D506
RGP10GPKG23
200V-RECT
L501
47µH
:LHL08
10
JL97
C513
470
25V
D507
RGP10GPKG23
-13V-RECT
D801
10
RGP10GPKG23
1W
+13V-RECT
:RS
C802
470
L801
25V
15µH
R806
0.68
1/2W
:FPRD
D804
GP08DPKG23
H-CENT
D807
H-CENT
S801
R
L
C
R832
2.7k
1/4W
:FPRD
C302
CH:CHIP
C304
CH:CHIP
R304
100
:CHIP
R306
100
:CHIP
L305
JW(5)
D302
R322
1.2k :CHIP
R325
1.2k :CHIP
R328
1.2k :CHIP
C329
68p
CH:CHIP
Q301
2SC2412K
BUFFER
R353
470
:CHIP
:CHIP
R519
0.47
1/4W
:FPRD
JL93
JL96
18p
18p
R354
470
200V
JL101
R803
0.68
1/2W
:FPRD
C820
0.047
200V
:PT
C319
0.1
25V
F:CHIP
L303
10µH
JL86
C
4
4
+B
2
3
3
6
5
R308
100
:CHIP
1
2
3
4
Q303
2SC2412K
BUFFER
2.5
1.8
R355
470
:CHIP
T801
NX4001
VIDEO
VIDEO
(PB)
R311
100
:CHIP
JL40
1
JL41
2
JL42
R313
100 :CHIP
R315
6
100 :CHIP
R318
100 :CHIP
C339
0.1
25V
F:CHIP
R
G
B
5
R346
10k
:CHIP
17
JL43
JL44
JL45
JL46
R319
100
:CHIP
JL47JL48 JL49
JL50
JL51
JL52
JL53
JL54
C331
470p
B
JL55
JL57
JL58
JL59
JL60
R359
10k
:CHIP
JL65
JL68
JL69
JL70
JL71
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
1
2
3
4
5
6
201918
HV1
JL92
1
2
JL94
3
4
5
JL95
FV
G2
14
13
JL108
ABL
11
+24V
10
+13V
9
8
-13V
7
JL112
JL113
B-SS8848<HK.>-A..
CN304
7P
:MICRO
VIDEO
R
B
GND
B.INT
SDA
SCL
TO JIG
CN305
7P
WHT
:S-MICRO
9V
GND
GND
R
G
B
IK
TO CV BOARD
CN701
CN306
6P
WHT
:S-MICRO
+B
NC
GND
9V
VM OUT
VM SW
TO CV BOARD
CN961
H.DY+
H.DY+
H.DYH.DY-
V.DYV.DY+
CN801
6P
:DY
CN803
5P
RED
:S-MICRO
200V
NC
GND
NC
H1
TO CV BOARD
CN703
TO
PICTURE TUBE
HV
TO CV BOARD
J701(G4)
TO CV BOARD
CN704
CN604
1P
:TAB
GND
TO F BOARD
CN903
TU101
*
9V
30V5VSCL
SDA
AS
R101
C102
L101
100
10µH
16V
1
:LAV35
100
:CHIP
R102
100
:CHIP
C104
100
16V
RF AGC
VIF9VAFT OUT
GND
L102
10µH
:LAV35
NCNCNCNCNC5VDET OUT
(MONO)
PLL-SWNCNCNCSCL
R106
100
:CHIP
R105
100
:CHIP
SDA
NC
R107
100
:CHIP
R OUT
L OUT
R125
*
AUDIO VIDEO
V
JL37 JL38
J101
2P
AUDIO
1k
JL120
JL121
1 2 3
IC101
*
RESET
D103
*
L105
10µH
R103 R104
1M
:CHIP
C111
22
16V
R108
75
:CHIP
MTZJ-T-77-9.1
PROTECT
C106
100
16V
C114
22
16V
100
:CHIP
D102
MTZJ-T-77-9.1
PROTECT
D101
R109
22k
:CHIP
4.4
R110
22k
:CHIP
R114
47k
:CHIP
5.2
R115
68k
:CHIP
3.8
4.6
Q102
2SC2412K
BUFFER
R113
1k
:CHIP
Q103
2SC2412K
BUFFER
R116
4.7k
:CHIP
L106
10µH
:LAV35
C117
47
25V
L107
1.2mH
33.8
C118
0.1
25V
F:CHIP
JL119
R111 R112
0
:CHIP
C113
10
IC103
TK11819MTL
DC-DC.CONVERTER
1 2 3
V-IN
T1
OSC
GND
456
DK
V-OUT
R123
1k
C119
:CHIP
C108
47
25V
2.2k
:CHIP
:LAV35
L103 L104
10µH
:LAV35
JL39
L108
10µH
R124
100k
:CHIP
10µH
:LAV35
Q101
2SC2412K
BUFFER
5.1
R117
4.7k
:CHIP
C338
100
25V
C110
47
25V
1
R126
1.2k
:CHIP
5.7
R127
:CHIP
VIDEO
CN301
21P
RELAY OUT
RELAY IN
VMSW
123456789
JL1
JL2
JL3
5
VCR PWR
CRT PWR
H PLS
JL4
JL5
JL6
V PLSNSB INT
SCL 1
SDA 1
DGC SW
YM/YS
1011121314151617181920
JL7
JL8
JL9
JL10
JL11
JL12
JL13
4
6
OVP
JL14
OSD B
OSD G
JL15
JL16
OSD R
AFT 0(TV)
JL17
JL18
123
PLL SW
NICAM
RESET Q
21
JL19
JL20
R118
*
D 5V
1234567
C316
47µF
JL21
25V
C311
47µF
25V
C315
47µF
25V
SW 5V
GND(A)
SW 9V
JL22
JL23
JL24
GND(M)
JL25
CN302
8P
VCC(SP)
GND(SP)
MTR 13.2V
8
JL26
JL27
JL28
C325
47µF
25V
TV V
123456789
JL29
VIDEO
AUDIO
TV Y
GND(A)
JL31
TV C
NC
TU V(TV)
TU AL(TV)
NC
JL33
JL34
1
2
NC
5V
135V
13
2.9
11
C330
100
25V
JL98
C804
47
25V
Q802
2SC5388
H-OUT
B
5 6 7 8
JL127
R837
4.7k
:CHIP
R817
2.2k
:CHIP
5.5
2.0
R823
10k
:CHIP
R334
2.2k
:CHIP
L302
10µH
:LAV35
2
D802
1SS119
R819
15k
:CHIP
F:CHIP
136.6
C
E
R505
3.3k
C813
0.01
L301
JW(5)
R824
:RN-CP
C821
560p
2kV
B
33k
R827
10k
:CHIP
1
R814
150k
:RN-CP
C814
0.01
B:CHIP
R828
100k
:CHIP
R332
22k
:CHIP
C326
9V
Q503
2SC2412K
H.V AFC
COMP
R506
100k
:CHIP
MTZJ-T-77-5.1C
R825
10k
:CHIP
C823
220p
2kV
B
C826
0.0047
200V
:PT
FB102
R631
:CHIP
R658
10k
:CHIP
C663
100
25V
C626
3300
25V
C620
470
25V
C625
1000
R652
680
:CHIP
T604
STB
33
JW902
7.5MM
R665
100k
1/2W
R666
2.2k
:CHIP
C632
100
160V
1.1UH
2
10
11
9
R609
1k
3W
:RS
D627
C655
D1NS6
470
FB612
1.3
Q610
2SC2412K
DRIVE
R607
1
3W
:RS
L604
1mH
:LHL13
JL110 JL111
C665
100
25V
D634
2SC2412K
REG-SW
SW
1.3
R620
15k
:CHIP
25V
L605
56µH
R645
5.6k
:RN-CP
Q602
+5V-RECT
MTZJ-T-77-39
D628
1SS119
D623
MTZJ-T-77-10
0.1
R673
R677
220
100
:CHIP
:CHIP
4.8
L603
220µH
JL125
25V
C612
2200
25V
1 2
C608
1000
12V
C639
0.0047
B:CHIP
REG-DRIVE
0.7
R653
5.6k
0.7
:RN-CP
D629
1SS119
BIAS
IC604
PQ30RV11
5V-REG
JL122
IO
C601
47
25V
C661
0.001
:CHIP
4
3
IC602
PQ09RD11
9V-REG
JL56
IO
G
IC603
µ
PC2406AHF
6V-REG
R618
10k
:CHIP
Q604
2SC2412K
6.5
ERC04-06S
CN601
5P
:VH
A.C
TO F BOARD
CN902
I
DGC
NC
DGC
NC
AC NUET
CN602
2P
:MINI
CHECK
CHECK
CN603
3P
DGC
NC
DGC
1
2
3
4
5
JL72 JL73
1
2
JL74 JL75
3
2
1
JL61 JL62
JL66 JL67
JL80 JL81
JL84 JL85
IC606
STR-F6656
SWITCHING REG
OCP/ FB
1 2 3 4 5
1.7 0
C638
0.0015
2kV
FB609
1.1UH
FB610
1.1UH
R648
0.22
2W
:RS
C643
0.001
250V
E
SDVIN
159.0
C636
470p
B:CHIP
R649
0.22
AC-RECT
C658
0.0022
1kV
:R
C602
0.001
250V
E
C659
0.1
250V
ERC04-06S
R674
5.6k
3W
:RS
GND
2W
:RS
AC-RECT
C631
0.001
CH:CHIP
D631
1SS119
C606
0.047
B:CHIP
RY603
DG5D1
Q609
0.1
FB608
1.1UH
R636
47k
3W
:RS
R644
1.8k
:CHIP
R626
22M
1/2W
R628
1k
:CHIP
D615
1SS119
R621
10
C634
0.001
B:CHIP
MTZJ-T-77-6.8A
C603
0.001
250V
E
C604
0.001
250V
E
R622
10k
:CHIP
9 10
8
7
6
FB603
1.1UH
4
3
2
D603
MTZJ-T-77-6.8A
R640
3.3k
:CHIP
C611
0.0022
1kV
:R
157.0
1.7
D630
C616
22
450V
R617
1.2
10W
:RB
R612
4.7
1/2W
:FPRD
THP601
MTZJ-T-77-18B
Q605 D616
S
0
2SK2845
DRIVE
C628
470p
CH:CHIP
:CHIP
R603
8.2M
1W
R660
220
:CHIP
R623
680
TP601
1.7
0.5
Q607
2SC2412K
DRIVE
TP602
R650
1.0
10W
:RB
C607
0.001
250V
E
RY602
14.8
D607
1SS119
R661
220
:CHIP
R624
22
1/2W
0
DGC-DRIVE
R619
:CHIP
2SC2412K
10k
D604
C642
0.01
630V
:PP
C623
220
C640
220p
B:CHIP
D617
RU1P-V1
DUMPER
D606
D1NL20U
RECT
D620
D1NL20U
C618
680p
B:CHIP
D618
D1NL20U
R678
8.2k
5W
:RS
R668
5.6k
3W
:RS
C641
470p
B
15V
JL109
JL105 JL106
R630
1M
D619
D1NS4-TR
PROTECT
R646
680
:CHIP
D611D602
ERC04-06S
R637
R632
68k
10k
:CHIP
:CHIP
D613
Q608
2SC2412K
TV-DRIVE
T602
SRT
R647
4.7
:FPRD
R641
470
:CHIP
0.4
D601
D6SB60LF
AC-RECT
C605
560
450V
JL78 JL79
JL82 JL83
PS601
2.7A
11
PS602
2.7A
12
EGP30DL-6085 +12V-RECT
13
PS603
2.7A
14
15
PS604
2.7A
16
17
18
FB613
JW(5)
PH601
PC123FY2
FEED BACK
4
3
R657
470k
1/4W
:RN
C650
0.01
250V
:PP
1SS119
DUMPER
FB611
JW(5)
C647
22
D632
1SS119
0.8
R659
:CHIP
JL123
R604
680k
1/2W
R664
33k
1/2W
D625
S3L20UF4
+7V-RECT
FB606
1.1UH
FB602
1.1UH
1SS119
CH:CHIP
15k
JL124
R605
0.1
1/2W
:RF
FB601
1.1UH
C619
0.001 500V B
D626
ERA22-08
DUMPER
D622
C651
0.001
D621
D1N20R
C646
C635
2200
0.01
500V
25V
E
JL99
D605
C624
0.001 500V B
FB604
JW(5)
D609
D2L20U-F MOTOR-RECT
FB605
JW(5)
D2L20U-F AUDIO-RECT
RY601
D614
1SS119
C660
220
25V
14.0
1
2
13.02.8
D610
R662
220
R663
220
C627
0.001 500V B
C630
FB607
JW(5)
R639
1.8k
:CHIP
1
3
4
5
6 8
R651
33
:CHIP
7V
R627
0.47
:FPRD
JL100
JL102
JL104
JL107
2200p 1kV
D612
RU4AM-T3
+135V-RECT
9V
1.3
PM601
PM-21
C614
10
R614
100
:FPRD
R615
R616
1k
JL116
JL117
JL118
9V
GND
STBY5V
5V
3.9
0
R672
JW(5)
D608
MTZJ-T-77-18B
D633
R634
1k
:CHIP
JL128
C818
47
25V
CN605
5P
BLACK
:S-MICRO
R611
15k
:CHIP
R656
15k
:CHIP
C644
470p
B:CHIP
L807
47µH
12
2W
:RS
C828
R655
10k
:CHIP
0.7
1SS119
R675
1k
C662
:CHIP
100
25V
1 2
C657
47
25V
0.001
CH:CHIP
R834 R830 R831R840
18
3W
:RS
TP801
1
L602
47µH
:LHL08
R801
270k
:RN-CP
C808
:CHIP
:CHIP
FB101
1.1UH
0.1
Q606
2SC2412K
PROTECT-DRIVE
JL90 JL91
4.4
IC608
PQ09RD11
9V-REG
4
3
R811
2.2k
:CHIP
R816
27k
:RN-CP
C809
0.1
25V
F:CHIP
R812
33k
:RN-CP
R818
18k
:RN-CP
C645
47
25V
1.3
3.2
2.0
10
C825
18
R835
6.8k
R836
10k
18
3W
:RS
2.7
160V
3W
:RS
4.4
S
9
A
TUNER,Y/C/J,HV DEFLECTION,
POWER SUPPLY
9V
R809
IC801
33k
NJM2903D
:CHIP
PIN-COMP
1234
12
R833
1
:FPRD
-1.2
L809
47
18µH
:LAV35
Q803
2SK1482-T
H-DRIVE
R670
1.2k
:RN-CP
4.8
JL126
R638
100
:FPRD
1
:CHIP
JL87
C617
47
25V
R606
220
:CHIP
R671
220
:CHIP
4
1 2
3
IC601
PQ05RD11
5V-REG
2
1
2
3
R629
1k
C610
47
25V
C621
47
25V
JL77
R601
220
:CHIP
FB620
1.1UH
IC605
SI-3120CA
13.2V-REG
5
234
1
4.8
Q601
2SC2412K
RY-DRIVE
:NSL0808
12.0
R667
1.2k
:CHIP
0.2
0.8
R635
15k
:CHIP
L601
10µH
C622
47
25V
JL88
R633
:CHIP
15k
1 2 3 6 7 84
C615
1
R613
1.2k
:FPRD
JL89
R676
JW(10)
TO CV BOARD
CN503
OCP/OVP PROT
134.1
134.5
0.56 2W :RS
JL114
JL115
12345
NS
12V
VC
G
R669
330
:RN-CP
JL63 JL64
C609
47
25V
C664
100
25V
IC607
SE-135N
+135V-RECT
13.0
C648
0.1
25V
B:CHIP
13.0
D624
MTZJ-T-77-6.8A
BIAS
R608
15k
:CHIP
ABOARD : IC103 TK11819M
GND
V IN
1
MOTIVE
OSC
5
FEEDBACK
CONTROL
OSC
2
V REF
ABOARD : IC501 LA7840L
PUMP
–
+
5
INVERTING INPUT
UP
6
1
GND
THERMAL
PROTECTION
2
Ver. OUTPUT
4
3
NON INV. INPUT
OUTPUT STAGE Vcc
AMP
A BOARD
Ref No. KV-VF21M77 KV-VF21M40/M70
D103 1SS119 Not used
IC101 S-80743AL-Z Not used
R118 Not used 0 : CHIP
R125 0 : CHIP Not used
TU101 BTF-WG441 BTF-LG443
A BOARD WAVEFORMS
3
DK
4
V OUT
T1
6
7
Vcc
PUMP UP OUT
mark LIST
*
PAL
1
1.0Vp-p (H) 1.0Vp-p (H)
PAL
2
1.0Vp-p (H) 1.0Vp-p (H)
3
1.4Vp-p (V) 1.4Vp-p (V)
PAL/SECAM
6
3.0Vp-p (H) 3.2Vp-p (H)
NTSC
7
3.4Vp-p (H) 3.0Vp-p (H)
9
2.6Vp-p (H) 3.6Vp-p (H)
12
4.0Vp-p (H) 6.0Vp-p (H)
15
1.4Vp-p (V) 54.0Vp-p (V)
18
ABOARD : IC606 STR-F6614
V IN
4
1
2
4
6
8
10
13
16
19
START
REG.
T.S.D
Iconst
Rconst
+
SECAM
SECAM
NTSC
PAL/SECAM
O.V.P
R2
Rconst
LATCH
O.S.C
–
Vth(2)
+
–
Comp2
C1
R1
NTSC
1
1.4Vp-p (H)
NTSC
2
1.4Vp-p (H)
5
7.0Vp-p (H)
PAL/SECAM
7
3.0Vp-p (H)
8
3.4Vp-p (H)
11
3.6Vp-p (H)
14
14.0Vp-p (H)
17
1100Vp-p (H)
20
NTSC
DRIVE
R3
Comp1
3
Vth(1)
2
1
5
D
S
O.C.P/F.B
GND
R4
–
+
P
– 87 –
– 88 – – 89 –
150Vp-p (H) 5.5Vp-p (V)
– 90 –
54.0Vp-p (V)
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