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CATALOG
Chapter1 Safety and notes ......................................................................................................................................................... 2
1-1 Installation notes ......................................................................................................................................................... 2
1-2 Attention points of operation and using ...................................................................................................................... 2
1-3 Storage notes ............................................................................................................................................................... 2
1-4 Dismantling notes ........................................................................................................................................................ 2
1-5 High-voltage warning .................................................................................................................................................. 3
Chapter2 hole machine standard and terminal functions ........................................................................................................... 3
2-1 Basic standard ............................................................................................................................................................. 3
2-2 Introduction of terminals(practicality photos) ............................................................................................................. 4
Chapter3 Main chip functions and the introductions of power supply ...................................................................................... 5
3-1 Main IC and functions of LS18 ................................................................................................................................... 5
3-2 Pin function description of LS18 chip ......................................................................................................................... 7
3-2-1 MSD308PX recommended operating power conditons ................................................................................... 7
3-2-2 Pin function of DTI1-E4I1VH tuner ................................................................................................................ 7
3-2-3 EN25Q64-104HIP brief introduction: .............................................................................................................. 7
3-2-4 74HC4052 brief introduction: .......................................................................................................................... 7
3-2-5 SGM330 brief introduction: ............................................................................................................................. 8
3.3 Brief introduction of power supply.............................................................................................................................. 8
Chapter4 The chassis frame diagram, mainboard power supply systems, mainboard interface definition and the waveform
of key points .............................................................................................................................................................................. 9
4-1 The chassis frame diagram .......................................................................................................................................... 9
4-2 Power supply system ................................................................................................................................................... 9
4-2-1 The composition and distribution of the TV power supply .............................................................................. 9
4-2-2 Pin voltage of the voltage adjustor on the mainboard .................................................................................... 10
4-2-3 Interface definition ......................................................................................................................................... 11
4-3 The waveform of key points ...................................................................................................................................... 12
Chapter5 Software upgrade instructions .................................................................................................................................. 13
5-1 Software upgrade tooling---there are two kinds of using upgrade tooling ................................................................ 13
5-2 Software upgrade introduction .................................................................................................................................. 13
Chapter6: Classical accident maintenance procedures and examples ..................................................................................... 18
6-1 The thinking of don’t boot ......................................................................................................................................... 18
6-2 Common problems for your reference ...................................................................................................................... 18
Chapter7 High voltage and high current wearing parts list ..................................................................................................... 19
Chapter8 Factory mode parameter setting instructions and notes ........................................................................................... 20
8-1 Enter into the factory mode ....................................................................................................................................... 20
8-2 Setting method of factory menu ................................................................................................................................ 21
Chapter9 Instructions of LS18 module Circuit Schematic Diagram ....................................................................................... 22
Appendix
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Circuit Schematic Diagram .............................................................................................................................. 25
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