Panasonic TH-40JX700, Техническое руководство

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The F16V is also used to generate the PNL-Voltage on A board. IC8000 outputs the
Panel VCC On signal. IC5260 starts generating the PNL12V by this signal. The PNL12V
is provided to T-con circuit of the LCD Module.
< and : A board (PNL voltage) >
4 5
44
Start up Operation 1-11
After that, IC8000 outputs the BL_ON command to the P board. That command turns on
the IC7800 for LED backlight drive. Then the 64V rise up over 110V(*) and output to the
backlight on the LCD panel. The backlight starts lighting by PWM signals, and LCD panel
displays the pictures.
If the backlight drive circuit does not work normally, the BL_SOS signal is informed to the
IC8000. At that time, IC8000 stops outputting the TV_SUB_ON signal and blinks the red
LED 1 times.
< : P board ( backlight drive ) >
6
(*)The DC level is different by the LCD panel.
TH- ##JX800*, 900W (Android TV)