5-5. IC BLOCK DIAGRAMS
A BOARD IC201 TDA7495
A BOARD IC501 STV 9379
2 6 3 2
VOLUME
FLYBACK GENERATOR
1 1 14
30K OP AMP
POWER AMPLIFIER
5 9
7
+
THERMAL PROTECTION
5
MUTE/STBY PROTECTIONS VOLUME 60K
10
12
30K
4
OP AMP
A BOARD IC101 TDA9817/V1
22 15 4 6 7 19 18 17 21 20
3
4
14
TUNER AGC
VIF AGC AFC DETECTOR
VOLTAGE REFERENCE
A BOARD IC606 STR-F6654
4
3
1 2 VIF AMPLIFIER FPLL VCO TWO
START
VIDEO DEMODULATOR AND AMPLIFIER 16
O.V.P
LATCH
DRIVE 2
REG T.S.D
8
23 24
SIF AMPLIFIER
QSS MIXER INTERCARRIER MIXER AM DEMODULATOR
O.S.C Iconst 1
SIF AGC
INTERCARRIER MODE SWITCH
FM-PLL DEMODULATOR
Y32 SW
5
3
12
13
9 10 11
5
A BOARD IC301 CXA2060AS
45 48 47 46 5 1 15 39 38 37 36 28 27 26 25 32 C VCO 4.433619MHz 3.579545MHz 9.582058MHz
31 30 29
GAMMA AMP CLAMP
42 PAL/NTSC DEMOD SW NTSC PAL,SECAM KILLER <KILLER OFF> EYUV CLAMP YUV SW <Y SEL> YUV OUT <C DECOD> COLOR AMP <COLOR> <C DFF> AXIS <COL MATRIX> Y/C MIX RGB CLAMP VPROT <VNG> VM AMP (OFF YS/YM) <BRIGHT> DRIVE AMP 3 <R/G/B DRIVE> AKB <IKR> R/G/B BLK <PON> CUTOFF CONT 21
APC <HUE>
CLAMP RGB 2/2
ABL/PEAK LIM <ABL MODE> <ABL VTH>
ACO DET.
COLOR<PAL/NTSC> <XTAL ID> PAL ID SYSTEM DISCRIMINATOR PAL/NTSC COLOR KILLER <KILLER> SECAM ID <SECAM> <XTAL> <COL SYSTEM> <COL LOOP>
LINE BLK
1H DELAY LINE (PAL/SECAM)
<R/G/B CUTOFF>
<RGB ON>
PICTURE AMP <PICTURE>
DYNAMIC COLOR <DY COL>
DPIC <DPIC> <AGING>
BRIGHT CONT
YS1 SW <RGB SEL>
YM SW
CHROMA AMP BPF PAL 4.43MHz NTSC 3.58MHz <C BPF>
<ID START> <ID STOP> <HUE>
DEEMPHASIS SECAM
<GAMMA>
24 23 22
BELL FILTER (ZAP) LIM AMP PLL SECAM FM DEMOD
VCO CAL. by 4.43MHz
CLAMP DC TRAN <DC TRAN>
DAC SW
PC BUS DECODER STATUS I/T
35 34
ACC AMP
ACC AMP
ACC DET
FILTER ALIGNMENT
43 2 41 4 7 9 6 CHROMA SW
ATT
TRAP PAL 4.43MHz NTSC 3.58MHz SECAM 4.2 - 4.43MHz <TRAP OFF> COUNT DOWN
DL PAL/NTSC 300 x 200nS SECAM 300 x 200nS <Y DELAY> LINE COUNTER V TIM GEN <UNDER SCAN> <FIELD ID>
SHARPNESS DL SHARPNESS AMP <SHARPNESS> <SHP FO> <PREOVER>
WIDE SAW FUNC <ASPECT> <SCROLL> <UPPER VLIN> <LOWER VLIN> <V ZOOM> <V UNDER SCAN>
VD SAW FUNC <VON> <VSIZE> <V POSITION>
<S CORRECTION> <V LINEARITY> <EHT COMP>
14 13
Y SW MONITOR SW VIDEO SW <VIDEO SEL> <S SEL> V SYNC SEP <VSS> <VSS LPF> H SYNC SEP <HSS>
<FIELD FREQ> <CD MODE> <INTERLACE>
V SAW GEN (50/50) VTIM
EW PARABOLA FUNC <H SIZE> <TRAPEZIUM> <PIN AMP> <EW DC> <CORNER PIN>
11
AFC <APC GAIN> <FH HIGH> <H CENT>
H SAW GEN H OSC <ZAP>
H TIM GEN <H BLK> <LEFT HBLK> <RIGHT HBLK>
PHASE DET <H POSITION> <AFC BOW> <AFC ANGLE> HPROT <HNG> 5 18 HD GEN <HD W> IREF REG
20
17
19
10
12
16
33
53
