Antes de empezar.........................................................................................................................................5
Advertencias ...................................................................................................................................................................5
Diagramas de bloques .................................................................................................................................7
Circuitos Integrados.....................................................................................................................................9
PWB General ..................................................................................................................................................................9
PWB Zócalo ....................................................................................................................................................................9
PWB PIP .........................................................................................................................................................................9
PWB Frontal....................................................................................................................................................................9
Fuente de alimentación...................................................................................................................................................10
Fuente conmutada ........................................................................................................................................................10
Arranque del controlador IC800 .................................................................................................................................10
Ciclo de trabajo ........................................................................................................................................................10
Regulación ...............................................................................................................................................................10
Stand-By .....................................................................................................................................................................11
Detección de desconexión de red ................................................................................................................................12
Microprocesador y Teletexto ...........................................................................................................................................13
Descripción de ports .....................................................................................................................................................13
Alimentaciones..............................................................................................................................................................13
Modos de trabajo ..........................................................................................................................................................13
Oscilador.......................................................................................................................................................................13
Reset.............................................................................................................................................................................14
Excursión de las salidas de RGB...............................................................................................................................14
Half Tone.....................................................................................................................................................................14
Teletexto........................................................................................................................................................................14
Desentrelazado...........................................................................................................................................................14
Medio entrelazado ......................................................................................................................................................14
Recepción de órdenes del usuario ...............................................................................................................................14
Señales de control del led ............................................................................................................................................15
Señales CTL1 y CTL2 ..................................................................................................................................................15
Señal -FAIL ...................................................................................................................................................................15
Señales SCA y SCB .....................................................................................................................................................15
Señal KEY.....................................................................................................................................................................15
Señal LP .......................................................................................................................................................................15
Señal SOUND_EN........................................................................................................................................................15
Señal HP_SW ...............................................................................................................................................................15
Señal FRONT_SW........................................................................................................................................................15
Señal PBL .....................................................................................................................................................................15
Señal SIGN_ON............................................................................................................................................................15
Señal Rotation. .............................................................................................................................................................15
Señal IR ........................................................................................................................................................................15
Señal -B4S_FAIL .........................................................................................................................................................16
Señal DEGAUSS ..........................................................................................................................................................16
Formatos de imagen .......................................................................................................................................................16
Deflexión horizontal.........................................................................................................................................................17
Etapa driver...................................................................................................................................................................17
Alimentación de la etapa driver ..................................................................................................................................17
Arranque de línea .......................................................................................................................................................17
Etapa de líneas .............................................................................................................................................................17
Circuito Natural Wide..................................................................................................................................................17
Tabla de contenido
2
Manual de Servicio CHASIS 2116 (Serie EB5-Z)