S/M No. : TWP895BEF0R2 Service Manual Colour Television CHASSIS WP-895 CP-485F DAEWOO ELECTRONICS CO., LTD http : //svc.dwe.co.kr Jun. 2002 Service manual WP-895/895F. CP485F Contents 1 - Main features ........................................................................................................................................................ 4 1-1 Specifications .................................................................................................................................................. 4 1-2 Channel table .................................................................................................................................................. 8 1-3 ATSS sorting method ....................................................................................................................................... 11 2 - Safety instruction ................................................................................................................................................. 13 3 - Alignment instructions ........................................................................................................................................ 14 3-1 Microcontroller configuration : Service mode ................................................................................................... 14 3-2 Service mode navigation ................................................................................................................................. 14 3-3 Microcontroller configuration : Option .............................................................................................................. 15 3-4 TV set Alignment ............................................................................................................................................. 16 3-4-1 Local oscillator alignment .................................................................................................................... 16 3-4-2 G2 alignment ....................................................................................................................................... 16 3-4-3 White balance ..................................................................................................................................... 16 3-4-4 Focus .................................................................................................................................................. 16 3-4-5 Vertical geometry ................................................................................................................................ 16 3-4-6 Horizontal picture centring................................................................................................................... 16 3-4-7 East/West correction ........................................................................................................................... 16 3-4-8 AGC .................................................................................................................................................... 18 4 - IC description ....................................................................................................................................................... 19 4-1 VCT383xA TV signal processor - Teletext decoder with embedded 8 bit - Controller ............................................................................................................................................................ 19 4-1-1 Block diagram off the VCT ................................................................................................................... 19 4-1-2 TV-signal Processor ........................................................................................................................... 19 4-1-2 -Controller ..................................................................................................... ..................................... 20 4-1-4 Teletext Features ................................................................................................................................ 20 4-1-5 Displaty OSD Features...................................................................................................................... 21 4-1-6 Audio Features ................................................................................................................................... 21 4-1-7 General Features ............................................................................................................................... 21 4-1-8 Data Capture ....................................................................................................................................... 21 4-1-9 Data Capture Features ........................................................................................................................ 21 4-1-10 TV processor version and -Controller capacity .............................................................................. 22 4-1-11 IC marking and version ....................................................................................................................... 22 4-1-12 Pinning ................................................................................................................................................ 22 4-2 MSP341x Multistandard Sound Processor ................................................................................................... 25 4-2-1 Basic Features of the MSP 341x ......................................................................................................... 25 4-3 TDA4470 - Multistandard Video-IF and Quasi Parallel Sound Processor ......................................................29 4-3-1 Description .......................................................................................................................................... 29 4-3-2 Features .............................................................................................................................................. 29 4-3-3 Pinning ................................................................................................................................................ 29 4-3-4 Block diagram .................................................................................................................................... 30 4-4 TDA894xJ Stereo Audio Amplifier ................................................................................................................. 31 4-4-1 Features ............................................................................................................................................... 31 4-5 TDA835xJ Vertical Amplifier ........................................................................................................................... 33 4-5-1 TDA8357J ........................................................................................................................................... 33 - 1 - Service ma nual WP-895/895F. CP885/885F. CP485F 4-5-2 TDA8358J ..............................................................................................................................................34 4-6 TDA6107Q..........................................................................................................................................................35 4-7 24C16 - 16 Kb EEPROM....................................................................................................................................38 4-8 STR - F6653.......................................................................................................................................................39 4-8-1 General description...............................................................................................................................39 4-8-2 Features.................................................................................................................................................39 4-8-3 Block diagram.......................................................................................................................................39 4-8-4 Pin description......................................................................................................................................40 4-8-5 Control part - electrical characteristics.................................................................................................40 4-8-6 MOSFET electrical characteristics.......................................................................................................41 5 - Circuit description..................................................................................................................................................42 5-1 Block diagram....................................................................................................................................................42 5-2 IF section............................................................................................................................................................43 5-2-1 Block diagram.......................................................................................................................................43 5-2-2 Vision IF Amplifier..................................................................................................................................43 5-2-3 Tuner-and VIF-ACG................................................................................................................................44