Service Manuals, User Guides, Schematic Diagrams or docs for : LG Monitor LG_42PG20_startup_sequence_[TM]

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LG_42PG20_startup_sequence_[TM]


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                                   50PG20/42PG20 POWER SUPPLY
                                TURN ON COMMANDS FROM MAIN PWB




                                                                                     M5V
                                                                                                       M5V (DC Voltage)
                                                                                     Reg               To Y-SUS, then to
                                                                                 7
                                                                                                         Control PWB.
                            In Stand-By            In Run (Relay On)                          8
           AC In           Primary side is           Primary side is
                                90V                      370V                        Vs               Vs/Va (DC Voltage)
1                    Stand
                                                   5        12V/16V              9
                                                                                     Reg

                   By 5V Reg                               Regulators                Va               To Y-SUS, Z-SUS
                                                                                     Reg             Va routed to X-PWBs

    AC        Stand                                                                          10
    Det.      By 5V                                 12V 16V
                                                    See
                                                   Note1                             NOTE 1:
                               5V        Relay                     M5V      Vs       50PG20 has 12V and 16V to Main at turn on.
                               Det.       On                       On       On       42PG20 only has 16V.

     3             2           5           5           6       6        7   9

                                                        12V 16V
                                                       Video Audio
            Turns on               5V
            Red LED                Reg
                    2

                                           Relay                                       At point 3 TV is in
                         Turns on           On                                         Stand-By state.
                    5                                                                  Energy Star compliant.
                        Green LED
                                               5                                       Less than 1 Watt
    AC      Both LEDs On
    Det.    Looks Amber

            Resets               Microprocessor            7
           Main Board                  or                  9
                                      BCM
               3



                               Power           Remote
                               Button          Or Key
                                          4



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