Protecciones Tv Philips 21pt128

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BIMOS - 36 : Seal de proteccin de circuitos de proteccin alrededor TS7470 al pin 36 IC7225 . BIMOS - 52 : seal que viene del pin 52 al pin 36 IC7225 IC7225 IC7225 - 6E preven cin est " colgado " en flashes ESD . PROTECCIN : Seal de Proteccin del bastidor IC7400 , en caso de que el generador fla yback vertical en IC7400 no se activeted , el voltaje en el pin 8 IC7400 convier te 2v . Para entonces, el circuito de proteccin en IC7400 har pin 7 "alto" anulando el HOR FLAYBACK y ARENA . el constang "alto" castillo de arena es fet a la crominancia los codificadores ( IC7225 y IC7250 -6D ) y para que la imagen se convertir en " negro " PROT - 38 : Seal de Proteccin del circuito de proteccin arount TS7470 - 7471 al pin 38 de la Capacidad , en caso de una proteccin de la uc cambia el televisor en st and-by y el LED parpadea . En caso de que la etapa de salida de lnea BIMOS - 36 ha cambiado "off" o en caso de un cortocircuito en el lado secundario del lote, el lote tensiones cada . Esta cada se mide a travs de R3473 - 3474 y as PROT- 38 se convierte en "low ", la uc c ambiar al modo de proteccin .BIMOS - 36: Protection signal from protection circuitry around TS7470 to pin 36 IC7225. BIMOS - 52: Signal coming from pin 52 IC7225 to pin 36 IC7225-6E preventing IC7 225 being "hanged" at ESD flashes. PROTECTION: Protection signal from frame IC7400;in case the vertical flayback ge nerator in IC7400 is not activeted,the voltage on pin 8 IC7400 becomes 2v. By then the protection circuit in IC7400 will make pin 7 "high" overriding the H OR FLAYBACK and SANDCASTLE. the constang "high" sandcastle is fet to the chrominance thecoders (IC7225-6D an d IC7250) and so the picture will become "black" PROT - 38: Protection signal from protection circuitry arount TS7470-7471 to pin 38 of the uc;in case of an protection the uc switches the TV in stand-by and th e LED blinks. In case the BIMOS-36 has switched "off" the line output stage or in case of a sh ort-circuit on the secundaryside of the LOT,the LOT voltages drop. This drop is measured via R3473-3474 and so PROT-38 becomes "low";the uc will switch into pro tection mode.