Tc-L37Dt30 Cpu Commands Explanation - Panasonic TC-L42D30 Technical Manual

TC-L37DT30 CPU Commands Explanation

①
TV SUB ON
The SYSTEM MPU on the A board outputs the
"TV SUB ON" command (3.2V) when the power
is turned on. This command is used to turn on
the circuit in the power supply that generates
+16V or P15V and DC24V.
P15V is provided to the A board to generate the
sub-voltages used by the signal process circuit.
The sub-voltages are confirmed by ASIC IC5000.
②
Backlight ON
After confirming the presence of the sub-
voltages, the "Backlight ON" command is
applied to the P board and subsequently the
LCD panel to turn on the circuit that controls the
backlight.
Panel STB ON / VCC ON
On the other hand, IC8000 provides the
Panel_STB_ON command to trigger the DC/DC
converter IC5300 into supplying 12V to the LCD
Panel or T-CON board.
③
①
A02
TV SUB ON
9
②
Backlight or Inverter ON
4
IC5400, 5420, 5440, 8100, 8702
P15V
11
DC/DC Converters
13
Distribute
IC5300
A16
DC/DC Converter
PNL12V
1-4
IC8000
System
SOS
MPU
IC5000
5V
3.3V
1.8V
1.5V
1.2V
③
PANEL_STB_ON/VCC_ON
A
A
38