Power On Circuit Explanation - Panasonic TH-42PX80U Service Manual
11th generation full high definition plasma display tv
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Also See for TH-42PX80U:
- Operating instructions manual (148 pages) ,
- Service manual (119 pages) ,
- Technical manual (53 pages)
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1.
The power command from the power switch on the S board or the remote control receiver on the K
board is provided to the Main CPU on the A board thru connector A1. The CPU on the A board outputs
the "F_STB_ON" Command and the PANEL_STB_ON" command.
2.
The "F_STB_ON" command is provided to pin 6 of connector P7 of the power supply to develop the
F_STB+15V.
3.
The "PANEL_STB_ON" is used to turn on the STB3.3V regulator on the A board. The output voltage is
applied to the "Panel" CPU on the A board (Formerly located in the D board).
4.
When the "Panel" CPU on the A board is energized, it outputs the "PANEL_MAIN_ON" Command
(3.2V) to pin 11 of connector P25 on the P board.
The PANEL MAIN ON command turns on the power supply circuit that outputs the Vsus, Vda, 15V, and
5V.
Power On Circuit Explanation
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