53 54

SANYO TV . VCR SANYO TV . VCR
LA71206M/7M123456789101112131415161718192060 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
47k
Ω
1.5k
Ω
22k
Ω
560
Ω
3.9k
Ω
+
+
0.1
µ
F
0.1
µ
F
0.01
µ
F
47
µ
F
+
+
22
µ
F
33
µ
F0.1
µ
F10
µ
F4.7
µ
F1
µ
F
0.1
µ
F
0.01
µ
F
+
++
1
µ
F
+
++21222324252627282930313233343536373839408079787776757473727170696867666564636261
SP (Hch)
SP (Lch)
A-VCC
EP (Hch)
EP (Lch)
47k
Ω
3.9k
Ω
0.1
µ
F
100
µ
F
0.033
µ
F
1
µ
F
0.022
µ
F
(M)
A-GND
Audio IN1
Audio IN2
47k
Ω
47
Ω
2.2k
Ω
1k
Ω
10k
Ω
27k
Ω
1k
Ω
2.2
Ω
3.9k
Ω
8.2k
Ω
12k
Ω
1k
Ω
330k
Ω
27k
Ω
1.5k
Ω
4.7k
Ω
0.1
µ
F
1000
µ
P
2200
µ
P390
µ
P
200
µ
P
Audio IN3
51
Ω
75
Ω
75
Ω
100
Ω
150
Ω
+B=5V
2SD734
AE
FE
2SA1318
2SC3331
2SC3331
R/P
TO MICOM
(PB-Low)
LINE OUT
22
µ
F
470
µ
F
REC/PB
Y-FM M EMPH
PB EQ
MONI
Y-VCC
VCC
VCC
V SYNC OUT(REC)
QV/QH INS(PB)
C.SYNC OUT
+
+
1
µ
F
10
µ
F
0.1
µ
F
+
1
µ
F
+
1
µ
F
+
1
µ
F
+
+
+
1
µ
F
0.01
µ
F
1
µ
F
1
µ
F
0.022
µ
F
0.01
µ
F
0.1
µ
F
0.047
µ
F
0.01
µ
F
VIDEO OUT
2.2k
Ω
680k
Ω
1.2k
Ω
1.8k
Ω
8.2k
Ω
10k
Ω
20k
Ω
VCC
Video IN3
75
Ω
+
10
µ
F
Video IN2
75
Ω
100k
Ω
100k
Ω
+
10
µ
F
Video IN1
CCD
VCC
C-VCC
4Fsc
ALWAYS
5V
PB C OUT
REC C MONI
+
1
µ
F
3.58M
NTSC
CLOCK INDATA INS.C. IN
10k
Ω
20k
Ω
COMP
OUT ENV
DET
HA SW
AUDIO-MUTE
C-ROT
RF SW
0.047
µ
F
0.047
µ
F
HA-GND
HA VCC
TOLERANCE
LESS THAN 1%
for REC CURRENT
adjustment
KILL
DET
COMP
OUT ENV
DET AUDIO
MUTE
HA SW
C-ROT
RF-SW
IN
C-GND
HA
GND
CHROMA
DET
ACC
DET
P
P
R
HA VCC
H
I
P
P
R
B
H
R
P
R
P
R
P
R
P
R
R
P
RP
RP
R
PR
P
1
2
3
1
2
3
A-GND
A-VCC
I
HA
PRF GND
+
ALC
ALC
DET
Vret
2.3V
LPF LINE
AMP
FM
AGC PB
FM-EQ
REC
FM-EQ MA IN
DF-FM V.SYNC
SEP
SYNC
SEP
SUB
LPF
FM
DEM
DOUBLE
LIM
S-EQ
6DBQV-QH
FBC
1/2
REG
4V
VIDEO
AGC
VCA
DRIVER
CCD
BGA
CNC
B.D.
3.58M
RPF1
Y/C
MIX
NC1
CLAMP
ACC
AMP
ACC
DET
4.21M
BPF
Sub
CONV
N.L.
DFFM
FM
MOD
MAIN
FMPHA
NL
FMPHA
DFTAIL
FNH
PB
AMP
BGA
BGA
OUT
PLL
SLD
320FH
VCO
VXO1
REC
APC
SERIAL
DECODER
AUTO-BIAS
CLAMP
CLAMP
REC
AMP MUTE
SP.LP
EQ
AMP
HA
PB.EE
REC:LP.EP
PB :EP
FB.EE
VREF
AUTO
BIAS PHASE
EQ
fo-ADJ
PHASE
EQ
Q-ADJ
VHS SQPB
FM
AGC
FIL Y-GND
MAIN
EMPHA
FIL S
DET
VCP
BAL
TC1
Y-VCC
AGC
TC2
CLOCK
VSS
VSS
OUT
IN
VCA
4F sc
VDD
ALWAYS
5V
CCDLA89964
PB
APC REC
AFC
YNR/COMB
R
R
R
R
R
P
R
P
P
P
PPB-C
PR-C
R-EQ
TEST NORMAL
C-LPF Main
CONV
3.58M
BPF2
B-DP
AMP
C-VCC
TIMMING
LA71750EM
+
+
+
+
+
+
+
+
+
+
1k
Ω
1k
Ω
2k
Ω
10k
Ω
2.2
Ω
22k
Ω
0.01
µ
F
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 20 21 22 23 24 25 26 27 28 29 3079805049484746454342414039383736353433323182838485868788899091929394959697989910078 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 58 57 55 53 52 512SC33312SC33312SA1318
R/P
560
Ω
AE
FE
SP (Lch)
SP (Hch)
+B(5V)
47
Ω
Use of commonness is
possible
EP (Lch)
EP (Hch)
Use of commonness is possible
H.A VCC
+
+
+
+
REC CURRENT IS DECIDED
BY THIS RESISTOR VALUE,
AND A TOLERANCE OF THE
RESISTOR VALUE WHICH
WE RECOMMEND IS
±
1%
81
PHASE
COMPEN
fo-CTL
REC-MUTE
CONTROL
for H.A.
COMP OUT
ENV DET
REC/PB
Y-FM
2.2k
Ω
1.2k
Ω
220P
2.7k
Ω
130P
6.8k
Ω
18k
Ω
10k
Ω
HA-SW-IN
C-ROT-IN
SERIAL DATA IN
RF-SW-IN
C SYNC OUT
CHARA. INS.
AUD-MUTE
4.7k
Ω
27k
Ω
1.2k
Ω
330k
Ω
12k
Ω
10k
Ω
12k
Ω
1.2k
Ω
8.2k
Ω
5.6k
Ω
MA IN EMPHA
OUT
10k
Ω
18k
Ω
SERIAL CLOCK IN
V SYNC OUT
Video OUT 1
To OSD etc
Video OUT 3
To SCART2(DEC)
Video OUT 2
To SCART1(TV)
Video IN 5
OSD(PB)
Video IN 4
FRONT
Video IN 2
SCART1(TV)
Video IN 3
SCART2(DEC)
DRV DRV DRV + +
OSD
CANAL DECODER
SUB
TITLE
DECODER
VPS OUT
(1Vpp)
Video IN 1
TUNER
GND
IN STANDBY MODE
SW1 FIXED ON IN1
SW2 FIXED ON IN3
SW3 FIXED ON IN2
44 PB H OUT
GND
SYNC SLICE PED.SIDE
3.9k
Ω
4.7k
Ω
8200P
1200P
1200P
+
++
+
180
Ω
LINE OUT
Audio IN1
Audio IN2
Audio IN3
REC:LOW C OUT
(SECAM C IN)
PB:FM OUT
(SECAM FM OUT)
PB:C OUT
(SECAM C IN)
19
+
GND
PAL-GBI
PAL-MN
LP/EP
PB/EE
A.GND
SP
RECVref
REC:LP/EP
PB:EP
100
Ω
PB/EE
R/P-EQ
SEPARATE
(REC)
SP/LP
R/P-EQ
COMMON
R/P-EQ
SEPARATE
PB REC/EE
CHROMA
A-VCC DET C-GND C-VCC
AUDIO
HD-SW
CTL ACC
DET FRAME
P/S AFC
FILT
2FSC-OUT
VCO
RD
FRAME
PB H OUT
CCD
GND
CCD
VCC
FBC2
DET
VCA
DET
DELAYED
SIGNAL
NT/NT
LC89984/85
M/M
Fsc
CLK
IN
C-MAIN
REC
BGA
PB
BGA-A
PB
BGA-B
C-DELAY
PB
R/PA
P
P
P
R
R
R
R
PHASE
COMPEN
Q-CTL
HA GND
FM
AGC
P
PR
WHEN SQPB,
EQ BYPASS
REC
FM AGC2
REF
REC
FM AGC2
FILT
P
P
R
R
HA
PRE GND
REC:ON
H.A.
VCC Y
C
REC:ON
Y
C
FBC1
FBC1
DET Y-VCC Y-GND
AGC BYPASS
AGC NORMAL
YC
P
PB_Y
PB_C
AGC
TC2 FBC3
DET
ALWAYS
5V
FRAME
2
1
59 56 54
R
PR
FM
AGC
REC
FM-EQ
REC
FM-EQ
FM
MOD
W/D
CLIP NL
EMPHA
PHASE
COMPEN
DOUBLE
LIM
PB_FM
EQ.
DETAIL
ENH
MAIN
DE-EM
Y-DELAY
SUB
LPF
FM
DEM
PR
ENV
DET
P
P
R
R
H
L
REC
FM AGC2 +
H
L
AUTO
BIAS
REC
AMP EQ
AMP
INVERTER
ATT
LPF Vref
2.3V
LINE
AMP
MUTE
ALC
DET 123
PRPR
VCO SLD CNC
NAP
BPF
NAP
KIL
B.D.
REC
APC
PB
APC
REC
AFC
KIL
DET
SYNC
DET
VXO2 VXO1
SECAM DET
PAL M DET
P
R
1H/2H
D.L
Y_DELAY
INV
D.L
EQ
D.L
EQ
COMB
AMP
BPF1
ACC
ACC
DET
CCD
LPF
FBC2
4
3
2
1
SW1
Mute
Mute
5
4
3
SW2
5
SW3
REG
4V
VIDEO
AGC CLP5 CLP4
60B
AMP
60B
AMP
VCA
AGC
TC1
CAR
BAL
CLP3
CLP2
CLP1
PR
PR
PR
P
R
SYNC
SEP 6DB
AMP
Chara
INS.
1/2
FBC3
NL
DeEM
NC1/2
PIC
CTL
Y/C
MIX
BPF2
BPF3
Sub
CONV
SERIAL
DECODER
Y.N.R
Y-DELAY
Y-LPF
C-LPF
KIL
B-UP
AMP
Main
CONV
BEFORE
AFTER
BIAS OSC ALC
Y-LPF
F-TEST
Block Diagram
Overview
Functions
Block Diagram
Overview
Functions
The LA71206M and LA71207M are video and audio signal processing (Y/C/A) system ICs for NTSC VHS VCRs.
Chip internal trimming is used to make these ICs fully adjustment free.
These ICs significantly reduce the number of peripheral components required, thus providing substantial cost savings in the signal-
processing board.

Video and Audio Signal-Processing IC Video and Audio Signal-Processing IC

NTSC VHS VCR video signal record and playback processing
VHS VCR audio signal record and playback processing
I2C bus serial control
Package: QFP80 (14 14)
The LA71750EM is a video signal-processing system IC that supports the PAL (G, B and I) 4.43 NTSC, MESECAM, and NAP
(G, B, and I) formats for VHS VCRs. Chip internal trimming is used to make this IC fully adjustment free.
This IC significantly reduces the number of peripheral components required, thus providing substantial cost savings in the signal-
processing board.
Additionally, this IC also supports the NAP standard (NTSC to PAL conversion) that is now common in Europe and China.
PAL VHS VCR video signal record and playback processing
VHS VCR audio signal record and playback processing
I2C bus serial control
Package: QIP100EJ (14 20)