Videocon Mstar MST719, Mstar MST719DU, Service Manual

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MST719 Service Manual
2
Contents
1. Introduction chassis block diagram ----------------------------------4
2. MST719 IC Introduction ------------------------------------------5
1) Features description ------------------------------------------5
2) Pins function description -- -----------------------------------7
3. TAS5707 IC Introduction -----------------------------------------13
1) Features description -----------------------------------------13
2) Pins function description --------------------------------------15
4. TDA9885TS IC Introduction ---------------------------------------17
1) Features description -----------------------------------------17
2) Pins function description --------------------------------------21
5. PCM1808 ADC IC Introduction--------------------------------------22
6. SN74LVC1GX04DCK IC Introduction ---------------------------------23
7. EN25F40 IC Introduction ------------------------------------------24
8. CS4344 IC Introduction ------------------------------------------25
9. Other ICs introduction ------------------------------------------26
10. Connectors and electronics parameter-------------------------------27
11. Usual fault-------------- -------------------------------------30
1)
Can’t work-------------------------------------------------30
2)
Back lamp can’t be on----------------------------------------31
3)
Image abnormity --------------------------------------------32
4)
No sound--------------------------------------------------33