Daewoo DDT-21H9ZDF(21"), Руководство по обслуживанию

Страница: 3 / 116

Service Manual CP-099/FS
-2-
4-3-2 GENERAL DESCRIPTION -------------------------------------------------------------------------------------------- 25
4-3-3 QUICK REFERENCE DATA ------------------------------------------------------------------------------------------- 25
4-3-4 BLOCK DIAGRAM ------------------------------------------------------------------------------------------------------ 26
4-3-5 PINNING ------------------------------------------------------------------------------------------------------------------- 27
4-3-6 FUNCTIONAL DESCRIPTION ---------------------------------------------------------------------------------------- 28
4-3-7 Source select switches block --------------------------------------------------------------------------------------------- 28
4-3-8 Loudspeaker channel ------------------------------------------------------------------------------------------------------ 28
4-3-9 Effect controls-------------------------------------------------------------------------------------------------------------- 28
4-3-10
I
2
C-bus conrol
----------------------------------------------------------------------------------------------------------- 28
4-4 TDA9886 IIC-bus controlled single/multi standard algnment-free IF-PLL -------------------------------------------- 29
4-4-1 DESCRIPTION ----------------------------------------------------------------------------------------------------------- 29
4-4-2 FEATURES----------------------------------------------------------------------------------------------------------------- 29
4-4-3 PINNING ------------------------------------------------------------------------------------------------------------------- 29
4-5 TDA894xJ Stereo Audio Amplifier ----------------------------------------------------------------------------------------- 31
4-5-1 Feature ---------------------------------------------------------------------------------------------------------------------- 31
4-6 TDA8357J Vertical Amplifier ------------------------------------------------------------------------------------------------ 33
4-6-1 Features --------------------------------------------------------------------------------------------------------------------- 33
4-6-2 General description -------------------------------------------------------------------------------------------------------- 33
4-6-3 Quick reference data ------------------------------------------------------------------------------------------------------ 33
4-7 STV5109 ------------------------------------------------------------------------------------------------------------------------ 34
4-7-1 24C16-16Kb EEPROM--------------------------------------------------------------------------------------------------- 36
4-8 STR - F6654(21”), STR-F6653(14”) ---------------------------------------------------------------------------------------- 36
4-8-1 General description ------------------------------------------------------------------------------------------------------- 36
4-8-2 Features -------------------------------------------------------------------------------------------------------------------- 36
4-8-3 Block diagram ------------------------------------------------------------------------------------------------------------- 37
4-8-4 Pins description ----------------------------------------------------------------------------------------------------------- 37
4-8-5 Control part electrical characteristics ---------------------------------------------------------------------------------- 38
4-8-6 MOSFET electrical chatacteristics ------------------------------------------------------------------------------------- 38
5-Circult Description --------------------------------------------------------------------------------------------------------------------- 39
5-1 Block Diagram ------------------------------------------------------------------------------------------------------------------ 39
5-2 IF SECTION -------------------------------------------------------------------------------------------------------------------- 41
5-2-1 Picture IF Amplifier ------------------------------------------------------------------------------------------------------ 41
5-2-2 Tuner and VIF-AGC ------------------------------------------------------------------------------------------------------ 41
5-2-3 VIF-AGC detector -------------------------------------------------------------------------------------------------------- 41
5-2-4 Frequency phase-Locked Loop(FPLL) detector ---------------------------------------------------------------------- 41
5-2-5 VCO and divider ---------------------------------------------------------------------------------------------------------- 41
5-2-6 Digital acquisition help and AFC --------------------------------------------------------------------------------------- 42
5-2-7 Video demodulator and amplifier --------------------------------------------------------------------------------------- 42
5-2-8 Sound carrier trap --------------------------------------------------------------------------------------------------------- 42
5-2-9 SIF amplifier --------------------------------------------------------------------------------------------------------------- 42
5-2-10 AGC detector ------------------------------------------------------------------------------------------------------------ 42
5-2-11 Single reference QSS mixer -------------------------------------------------------------------------------------------- 43
5-2-12 AM demodulator -------------------------------------------------------------------------------------------------------- 43
5-2-13 FM demodulator and acquisition help -------------------------------------------------------------------------------- 43
5-2-14 Audio amplifier and mute time constant ----------------------------------------------------------------------------- 43
5-2-15 I2C-bus transceiver and MAD (module address) ------------------------------------------------------------------- 44
5-2-16 Internal voltage stabilizer ---------------------------------------------------------------------------------------------- 44
5-3 Video - VCT description ------------------------------------------------------------------------------------------------------ 44
5-3-1 Introduction ---------------------------------------------------------------------------------------------------------------- 44
5-3-2 Video Front-end ----------------------------------------------------------------------------------------------------------- 44
5-3-3 Input Selector -------------------------------------------------------------------------------------------------------------- 44
5-3-4 Clamping ------------------------------------------------------------------------------------------------------------------- 44
5-3-5 Automatic Gain control -------------------------------------------------------------------------------------------------- 44
5-3-6 Digitally Controlled Clock Oscillator ---------------------------------------------------------------------------------- 44
5-3-7 Analogue Video Output -------------------------------------------------------------------------------------------------- 44
5-3-8 Adaptive Comb Filter (VCT3834A only) ----------------------------------------------------------------------------- 45
5-3-9 Color Decoder ------------------------------------------------------------------------------------------------------------- 45
5-3-10 Horizontal Scaler (VCT3834A only) --------------------------------------------------------------------------------- 45
5-3-11 Video Sync Processing -------------------------------------------------------------------------------------------------- 45