Table of Contents
Advertisement
3DQDVRQLF
1
CIRCUIT DESCRIPTION ........................................................................................................................... 3
1.1
1.1.1
Tuner and IF output Tuner: ............................................................................................................. 3
1.1.2
Vision IF .......................................................................................................................................... 3
1.1.3
Sound ............................................................................................................................................... 8
1.1.4
Horizontal and vertical synchronization ....................................................................................... 10
1.1.5
Luminance and chrominance signal processing ............................................................................ 13
1.1.6
Color Decoder ............................................................................................................................... 15
1.1.7
AFC - Tuning - ATS ....................................................................................................................... 18
1.2
1.2.1
1-3-1 local keyboard...................................................................................................................... 20
1.2.2
1-3-2 IR remote control code......................................................................................................... 20
2
1.2.3
I
C bus ........................................................................................................................................... 22
1.3
1.3.1
General description:...................................................................................................................... 24
1.3.2
Horizontal deflection ..................................................................................................................... 24
1.4
V
1.4.1
Z-421 circuit .................................................................................................................................. 29
1.4.2
Drive circuit part ........................................................................................................................... 30
1.5
V
1.5.1
Video output amplification............................................................................................................. 32
1.5.2
ABS operation................................................................................................................................ 34
1.5.3
Beam current limiter...................................................................................................................... 35
1.5.4
Euro-scart...................................................................................................................................... 36
1.6
1.6.1
Vin terminal, start-up circuit.......................................................................................................... 37
1.6.2
Oscillator, F/B terminal voltage (pin 7)......................................................................................... 37
1.6.3
Function of INH terminal (pin 6), control of off-time.................................................................... 37
1.6.4
Drive circuit................................................................................................................................... 37
1.6.5
OCP function ................................................................................................................................. 37
1.6.6
Latch Circuit.................................................................................................................................. 38
1.6.7
Thermal shutdown circuit .............................................................................................................. 38
1.6.8
Over-voltage protection circuit...................................................................................................... 38
1.6.9
Stand-by Mode TOP210................................................................................................................. 38
1.6.10
CONTROL PIN (pin4) ................................................................................................................... 38
2
VCR PART................................................................................................................................................... 39
2.1
KEY FEATURES OF VIDEO IC AND ITS RELATIVES.................................................................... 39
2.2
RECORD AND PLAYBACK PROCESSING CIRCUIT ..................................................................... 40
2.2.1
RECORD PROCESSING............................................................................................................... 40
2.2.2
PLAYBACK PROCESSING ........................................................................................................... 43
2.2.3
AUDIO SIGNAL PROCESSING (LA71511M) .............................................................................. 46
Contents
................................................................................................................................. 3
.................................................................................................................... 20
- FBT ........................................................................................................... 24
........................................................................................................................... 29
ABS ................................................................................................................... 32
STR-S5707.................................................................................................................... 37
2
Advertisement
Table of Contents
