Changhong Electric JUC7.820.00084054, Руководство по обслуживанию

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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 HLS49J ...............................................................................................................................6
3-2 Pin function description of HLS49J chip.....................................................................................................................7
3-2-1 MSD308B recommended operating power conditons...................................................................................7
3-2-2 M25P16 16Mbit(2M x 8bit) brief introduction: ............................................................................................7
3-2-3 SY8009B DC-DC brief introduction:.........................................................................................................7
3.3 Brief introduction of power supply ..............................................................................................................................8
Chapter4 The chassis frame diagram, mainboard power supply systems, mainboard interface definition................................8
4-1 Power supply system ...................................................................................................................................................9
4-1-1 The composition and distribution of the TV power supply ..............................................................................9
4-1-2 Pin voltage of the voltage adjustor on the mainboard ....................................................................................10
4-1-3 Interface definition .........................................................................................................................................11
Chapter5 Software upgrade instructions ..................................................................................................................................11
5-1 Software upgrade tooling---there are two kinds of using upgrade tooling ................................................................11
5-2 Software upgrade introduction...................................................................................................................................12
Chapter6: Classical accident maintenance procedures and examples......................................................................................16
6-1 The thinking of don’t boot .........................................................................................................................................16
6-2 Common problems for your reference.......................................................................................................................16
Chapter7 High voltage and high current wearing parts list......................................................................................................17
Chapter8 Factory mode parameter setting instructions and notes............................................................................................17
8-1 Enter into the factory mode .......................................................................................................................................17
8-2 Setting method of factory menu.................................................................................................................................19
Chapter9 Instructions of HLS49J module Circuit Schematic Diagram ...................................................................................20
Appendix
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Circuit Schematic Diagram ..............................................................................................................................20