Changhong Electric UD86GHF3060Ai, Maintenance Manual

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Please read this manual carefully before maintenance
Chapter1 Safety and notes .................................................................................................................................................. 3
1.1 Installation notes .................................................................................................................................................. 3
1.2 Attention points of operation and using ............................................................................................................... 3
1.3 Storage notes ........................................................................................................................................................ 3
1.4 Dismantling notes ................................................................................................................................................ 3
1.5 High-voltage warning........................................................................................................................................... 4
Chapter2 whole machine standard and terminal functions ................................................................................................ 4
2.1 Basic standard ...................................................................................................................................................... 4
2.2 Introduction of terminals(practicality photos) ...................................................................................................... 5
Chapter3 Main chip functions and the introductions of power supply .............................................................................. 6
3.1 Main IC and functions of HLS71EJ-IU ............................................................................................................... 6
3.2 Pin function description of HLS71EJ-IU chip ..................................................................................................... 7
3.2.1 MSD6586 recommended operating power conditons ............................................................................... 7
3.2.2 MSH6110A DC-DC brief introduction ..................................................................................................... 8
3.2.3 SY8089AAAC Brief introduction ............................................................................................................. 8
3.2.4 TPS562201 Brief introduction .................................................................................................................. 8
3.2.4 TPS563201 Brief introduction .................................................................................................................. 9
3.2.4 TPA3136D Brief introduction ............................................................................................................. 9
3.2.8 Tuner R842 Brief introduction ....................................................................................................... 10
Chapter4 The chassis frame diagram, mainboard power supply systems, mainboard interface definition ....................... 11
4.1 Power supply system ........................................................................................................................................... 11
4.1.1 The composition and distribution of the TV power supply ...................................................................... 11
4.1.3 Interface definition .................................................................................................................................. 14
Chapter5 Software upgrade instructions .......................................................................................................................... 14
5.1 Software upgrade method---there are two kinds of upgrade methods................................................................ 14
5.2 upgrade method 1
：
........................................................................................................................................... 15
5.3 Software upgrade method2
：
Use a U diskincluding the upgrade programme directly upgrade ....................... 19
Chapter6: Classical accident maintenance procedures and examples .............................................................................. 23
6.1 The thinking of don’t boot.................................................................................................................................. 23
6.2 Common problems for your reference ............................................................................................................... 23
Chapter7 Factory mode parameter setting instructions and notes .................................................................................... 23
Expert ....................................................................................................................................................................... 26
Specific application support ..................................................................................................................................... 27
Appendix
：
Circuit Schematic Diagram ...................................................................................................................... 27