TCL王牌大屏幕彩电故障检修实例(下)

TCL?????ó?????????????ì??????(??)??26.???????ó??TCL????9329?????????ú?ó?????ú???????????ú×?????????·??????ì???????????????·????????????500mA±?????????3??4???????á???????ú???????¤??????????°é???§??????·¨??????????????????·???????????????IC601???????¤×÷?ì????????IC601??CPU?????í?÷??CPU???????¤×÷????????????????5V?????????ú?????????????????????????±?????????????÷?????????????????÷CPU???????¤×÷???????¨?????????¨?÷??{31}??{32}????????10MHz???§??????????IC601??{32}????·????????ú??????????????????????R635(10k??)??D607(IN414R)?°C615(10?F)×
é???????????·??IC601??{32}??????5V????±?{42}????5V????????1ms????±???IC601?????????ò?????????????????¨???????·D607???·?????????í???????ü??D607?ó???ú?÷????????????????27.???????ó??TCL????9329?????????ú?ó?????¤????????????°é????????·??????ì?????ì??±?????F901?????·?????÷?÷??BR901(RBU??406)???????·?????·???÷???????????ì??·???Q909??c??e?á???÷?????·?????·?????????????????ó???à???ü??F901??BR901??Q909?????ú?¤×÷?????????????????ó?????????°?????±???ó??????????????Q909???????ü???????ó?????·?÷?????????????ì???????????ó???????????????ù??·?????????·??ú?????????ú???·?????????ú?ó???ú??????·??????·?????¤×÷???????????·?????¤×÷?????????????á???????????????¨?è???·143V???????????????????????????á????±??ì????????????·?·???????????????·?·????????????·??????C912(0.022F/2kV)??R13(39??/5
W)?????ü?????·?????????????????×?÷???????????é??C912????±????????????í???????ü??C912????????????????2SD1403?ó???ú?÷????????????????28.???????ó??TCL????9329?????????ú?±???±???????±?????????????±?°?????±??????·??????ì???????????ú????C903????????300V×ó???±?÷????????????????280V??Q909???ù????0V?????÷???????????¤×÷?????ú?ó?????÷???¨?ó??300V???????·????????±????÷T901??9?ú8?úQ901??c?????í???·??R911????Q909???ù?????????á?????????÷??????????Q909?÷???????±·?????e?????????????ü300V????e????????????0.15??????×èR912???????±???????????ù?ó???????????????·???á?????????ó???é??R912???????????????????????????í???????????????ó???ú?÷????????????????29.???????ó??TCL????9525???????ù???????????°?????±?ù??????·??????ì??????IC102??????IC8305??{15}??????????0.7V????????2V×ó??????°é??×???IC8710S??7????????6V×ó?????????????????¨?÷IC102??{15}?????????????????????ù???????????¨°é?????????·IC102??{15}?????§???¨?÷CF101?????????????í????????6.0MHz???¨?÷?ü???ó???ú?÷????????????????30.???????ó??TCL????9525?????????×?÷?ó?????¤????°é????????·??????ì????°??????????·??????????×è????300??×ó???????÷±??????????????ì????????°???R911??C904??Q901??R903??R912??R910????????????°??????????ì?éQ901??Q910??R903?????????ü???ó???ú???????ú?????¤×÷????C917??????314V????C912??????????0V???ì?é??????????IC9013??????????310V?????ì?é??ZD901??IC901???·???ü???????????÷???ó?????ú????????????????145V??????????35V×ó?????????????????????????????¨???????????·ZD902?????????????????í???????ü???????÷???ó???ú?÷????????????????31.???????ó??TCL????9625B??????????????????°é????????·??????ì?????òQ603??b??×????????????±?????ù?÷??·??????????ù?????÷???ú??????·????·?ù±????????¤??????·????·??????????????·????????·IC101(LA7577)?÷??????????
??IC101??1??2???????ù????4V×ó??????????2???????????·??????T103??R113??C108???é??????C108???÷?????????ó????°é???????·??IC101?÷???????????ó???????ì??IC102(TA8710S)?÷????????5????????9.8V???é??????????3.8V?????±????IC101??{22}????????????9.8V,???¨????????C134?????????????í???????ü??C134?ó???ú?÷????????????????32.???????ó??TCL????9629BZ?????????????±??????????????????????·??????ì??????????×ù°???Q505??Q507??Q509??????????????·???????????????????????×?????????Q509?ù???????????????÷Q509?????¤×÷????IC201(TA8759BN)??{43}?????????????????????????????éIC201???§???·???±??{64}??B??Y???????????±??·????????????????????ó???é?????§????R201??R202??C201??C2
02???é???ù??°???×èR202???·?????????í???????ü??R202?ó???ú?÷????????????????33.???????ó??TCL????9629BZ????????°é???????????ù??????????????·??????ì????????°é????·?TDA2616??7??????????·???????32V?????????????????÷??×èR601?°????????????????R601???????????·??R601??????2W???ü?????????÷??·????·?????·??????????·???IC601???·????IC604???·?????ü?????????????????????????ò??±í5A?±?÷???÷????????R601?????????ú·??????÷·????ó?????????ú???é?????÷??×èR601?°??·????·IC604?????????????í??????·?±???0.68??/1W??×è??TDA2616?ü???ó???ú?÷??????
??????????34.???????ó??TCL????9629BZ???????°?????±??????????????????·??????ì?????ì???????????????÷?????ù±???????????·??ú???ó?????·?????ò??±í??????°???×é?????????????????÷????142V?????????????????????????????¨?è???·?????????¤×÷???ì???????????·??·???Q411?ù?????????????????·?ì?éIC201(TA8759BN)??{39}??????????????????????{40}??????9V????????????·?±??ì?é9V??????D217?????¨????C231??C230?????÷??????×èR218A???é???????????·R218A???·?????????í????????8.2k??/3W??×è?ü???ó???ú?÷????????????????35.???????ó??TCL????9629B???????°?
????±??±??????ê????????·??????ì?????????????·????????????×è???????÷±??????ê???????÷????????142V??????????????·ü????????????????????????????????????????±í?÷????·??ú?????????·???ì?éR803A??R803??R804??R807??C812??C814??C815??????????×??ó?ì?éR810???÷??×è???é?????÷??×èR810±????????????í???????ü??R810(??0.18??/2W)?ó???ú?÷????????????????36.???????ó??TCL????9629B???????°?????±??????????????????????·??????ì??????????????Q421??????×è??·???c??e???????÷?????ü??????????60W°×????×÷???????????ú?ó??????????????????????????200?à·ü
?????÷?????????????????·???é?????????·??×èR818?é???????????í???????????????ó???ú?÷????????????????37.???????ó??TCL????9629B???????????????????¨????×?·?·?????????·??????ì???????¨?è???··??ú???????????ú????IC201??{29}???????????????????????ù±?????????????????IC301?÷??????????7???????????????????ù±???????IC301??7????±????????????·????????????1.2V?????±7?????¨??Q002?òCPU??{27}???á??????????????????????×?·??¨????????IC301??7??????????????Q002??????????×?·?·??????ì?éIC301??7?????§??????·???×???????????C303?????????????í??
??????220?F/35V?????ü??C303?ó???ú?÷????????????????38.???????ó??TCL????3498GH???????????í???§????????·??????ì???????úIC301??{46}??????-?÷???????????????????¨????????????Q405??Q407·??ó??·??ó?ó????????R464??C465??·??????¨??L402????????×????????÷??????×????÷???????í???§?????????????????ì?éQ405??Q407?ù????????·????·?????????ì?????é???í?????·Q409?÷???????????í???????ü??D409?ó???ú?÷????????????????39.???????ó??TCL????3498GH????????????????????????·??????ì???????ú?????¨?è???·????IC301??{47}??{51}???????§????×é?????????????????????????¨?????????·????????????????{47}??{48}??????????IC301??{41}??{51}?÷??????????????????IC405?÷????????·???IC405???????????????????¨TDA8351AQ?????????????í???????ü?????ó???ú?÷????????????????40.???????ó??TCL????3498GH???????°?????±????????????????????·??????ì??????????????????×é??????????145V??18V??????????????7805??????5V???????????ò?????????????±????8V???????±??·????????????????????ì?é7808?????????????????????÷????????T901??{12}?????????????????éD910??R924??C919??C920???é??D910?÷???????????í????????S5295G?ü??????????????????RU2?????ó???ú?÷????????????????41.???????ó??TCL????3498GH???????????¤????????????°é????????·??????ì?????????¤?????÷???????·?°?¨?è???·?¤×÷???????ì?é????·????·???×???é5V??33V?????????????????÷???÷??????5V????????????33V??????33V??????????????????????145V????R440??????ZD101?????ó??????????R440????145V????????????×ó???????????é??ZD101?÷???????????í???????ü??ZD101?ó???ú?÷????????????????42.???????ó??TCL????3498GH???????????¤????????????°é????????·??????ì???????úD901??R902???????????·????IC901?á???????????????????????¤×÷???????ó????T901??5????????????D903??Q901??ZD901???????¨?ó????IC901??9??????????????b???á?????????????????ó??T901????????????????D906??D911??D909???÷?ó·?±??á??145V??30V??18V????????D910??IC904??D908??IC903?á??8V??5V???????ì?é???????·????D901??R902??????????·??????????·D903??Q901??ZD901?????÷????·??????????·Q901??ZD901?÷???????????í???????ü??Q901??ZD901?ó???ú?÷????????