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DCDC

Power Supply Block Diagram : TX-L37ET5. T*-L37ET5. ( TNPA5583 ). B: TV_SUB_ON=H  PFC on  B=380V TV_SUB_ON=L  PFC off  B=140V/310V (depend on the AC voltage). D 7 200 C7301. C. A. B. T 7 202. D7102 Rectifier. Y. Q7 512 IC7502. P4. Q7 501. S. 7 8 9. PFC IC7201.

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DCDC

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  1. Power Supply Block Diagram : TX-L37ET5 T*-L37ET5 ( TNPA5583 ) B: TV_SUB_ON=H  PFC on  B=380V TV_SUB_ON=L  PFC off  B=140V/310V (depend on the AC voltage) D7200 C7301 C A B T7202 D7102 Rectifier Y Q7512 IC7502 P4 Q7501 S 7 8 9 PFC IC7201 D7501 C7502 Q7200 REG 7 24V 24V 8 V Q7502 D VCC IC7301 1 2 3 VCC D7502 C7511 6 T7301 VCC 16V G 16V IC 7400 Q7201 5 DCDC OUT 4 1,2 5 VH Q7301 5V 5VS Start Vcc D7301, 7302 R7301- 7306 8 PC7302 2 8 2 Power SW EN feedback Q FB H IC7501 P2 Q7510 H=ON PC7303 I Q7304 TV_SUB_ON PFC ON P L=ON 7 PC7304 Q7511

  2. Simple Power On Sequence < Plug In > < Power On > Power Switching circuit (IC7301/T7301) keeps working. STB5V keeps output. Power Switching circuit (IC7301/T7301) start working P P P STB5V output SW/ Remote Power on A Output TV_SUB_ON signal A Output TV_SUB_ON signal P PFC circuit (IC7201/T7201or7202 ) start working P PFC circuit (IC7201/T7201or7202 ) start working P 16V/24 output P 16V/24 output Peaks read the IC8900 A Output PANEL_VCC_ON2 signal A Stop TV_SUB_ON signal A P Output BL_ON_ON signal A PFC circuit (IC7201/T7201or7202 ) stop Power off Power on Power Switching circuit (IC7301/T7301) keeps working. STB5V keeps output. P

  3. 4 Informe de Koma: Humo por IC7301 dañado Panamex January .2012 Ocurrio Recibido Reportado Dec 31 Jan 9th Jan 9th ➊ Problema, Descripcion, Acontecimiento ❸ Accion inmediatas/ Mercado / Otros. Current Lot quality assurance Problema: .Después de 1 hora de instalado el televisor repentinamente aparece humo y se apaga. Modelo : TC-L32C4X, S/ N: MXDA11208435 Identify root cause Donde : Cuando : Cuando fue ensamblado : Assy Linea Dec 1srt PCB Linea Nov 30th Preventive action in Panamex Process Stock in Panamex: 1020 units: Was released after all confirmation tests. Market action: Replace P board complete and return at factory No hubo incendio, lesiones humanas o daños materiales ❹ Recurrence prevention / Horizontal dev. ❷ Causa / estudio de causa de origen By Panamex Production & QC : Causa: Sobre carga eléctrica debido a: - Enhance the ESD activities 12/01/2012 a) Increase the time inspection from 1 to 5 min b) Test devices increase. QC section A Rendimiento incorrecto del IC Hacer control ESD daño parcial mente Panamex control B It can detect Constant fields It can detect Discharges C) Daily ESD revision by Production section Sensor de Corriente Horizontal : ToInclude Audio factory Origen de la Causa: Bajo estudio por PAVCKM By R&D : We wait reply

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