samsung dvd-p181 free download

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7. Schematic Diagrams 7-1 All block Diagram ----------------------------------------------------------------------------------------7-2 7-2 Power ------------------------------------------------------------------------------------------------------------7-3 7-3 S.M.P.S (S.M.P.S PCB) ----------------------------------------------------------------------------------7-5 7-4 Front Key (S.M.P.S PCB) ------------------------------------------------------------------------------7-6 7-5 Video (Main PCB) -----------------------------------------------------------------------------------------7-7 7-6 Audio (Main PCB) -----------------------------------------------------------------------------------------7-8 7-7 Memory (Main PCB) -------------------------------------------------------------------------------------7-9 7-8 Decoder (Main PCB) -----------------------------------------------------------------------------------7-10 7-9 Power (Main PCB) --------------------------------------------------------------------------------------7-11 7-10 Connector (Power Key PCB)- -------------------------------------------------------------------7-12 7-11 Power Key (Power Key PCB) -------------------------------------------------------------------7-13 7-12 Scart (Scart PCB) -------------------------------------------------------------------------------------7-14 7-13 Scart Connector (Scart PCB) -------------------------------------------------------------------7-15 7-14 Karaoke (Karaoke PCB) --------------------------------------------------------------------------7-16 For schematic Diagram - Resistors are in ohms, /8W unless otherwise noted. Special note : Most semiconductor devices are electrostatically sensitive and therefore require the special handling techniques described under the "electrostatically sensitive (ES) devices" section of this service manual. Note : Do not use the part number shown on this drawing for ordering. The correct part number is shown in the parts list (may be slightly different or amended since this drawing was prepared). Important safety notices : Components identified with the mark components. Use only the same type. Note have the special characteristics for safety. When replacing any of these Samsung Electronics This Document can not be used without Samsung's authorization 7- Schematic Diagrams 7-1 All block Diagram 7- This Document can not be used without Samsung's authorization Samsung Electronics Schematic Diagrams 7-2 Power 7-2-1 About S.M.P.S (Ringing Choke Converter Method) u Terms 1)1st:Commonpowerinputto1stwinding. 2)2nd:Circuitfollowingsoutputwindingoftransformer. 3)f(Frequency):Switchingfrequency(T:Switchingcycle) 4)Duty:(Ton/T)x100 (b)SNUBBERCircuit: PDS11,PCD12,PRS13,PCD11,PPS12 1)Preventresidualhighvoltageattheterminalsof switchduringswitchoff/Suppressnoise. Highinvertedpoweroccursatswitch(PQR11)off, becauseofthe1stwindingoftransformer: (V=-L1xdi/dt.L1:LeakageInduction) Averyhighresidualvoltageexistonb