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Circuit Description of J711/J700 DVD Player
6. DVD Loader
6.1. The loader is a finish module, It powered by the power supply connector J803
and controlled by the main PCB HX1 connector.
6.2. The tray open/close motor is driven by IC60 (LB1641), ICS1 control the IC60
through SLIDER_IN, SLIDER_OUT, SLIDER_OPEN/CLOSE. It detects the
driver current to sense the tray close action.
7. Front panel
7.1. The Front panel VFD is driven by the VFD controller UF3 (BU2872AK).
7.2. CPU controls the VFD driver through the serial bus VFD_CS, VFD_DATA and
VFD_CLK. It does the entire key sensing and VFD display controls.
7.3. The VFD filament (Heater) voltages were provided from the oscillator and driver
QF1 to QF4.
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