Service Manuals, User Guides, Schematic Diagrams or docs for : LG Monitor LG_42PG20_Block_Diagram_[SCH]

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LG_42PG20_Block_Diagram_[SCH]


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                                         Y-SUS DRIVE WAVEFORM

                                                               RAMP 150V To Peak                                                                                    42PG20 CIRCUIT INTERCONNECT DIAGRAM                                                                                                                                                  Z-SUS
                                                                                                                            4mS
Y-SUS TP                                                                                                                                                                                                                                                                                                     See next page for
                                                                                                                                                                                                                                                                                                                waveforms
                                                                                                                                                                                                                                                                                                                                                                       VZ Bias
                                                                                                                                                                                                                                                                                                                     P302
                                                                                                                                                                                                                                                                     Remove all input signals
                                                                                                                                                                                                                                                                                                             Pin     State Ref#                                                        Z-SUS TP
                                                                                                                                                                                                                                                                     from the unit so the
                                                                                                                                                                            P812                              P813                                                                                                 Menu Off 10
                                                                                                                                                                                                                                                                     menu will be the only                   11
                                                                                                                                                                    Pin STBY          Run      Pin     STBY Run        No Load                 P812                                                                Menu On 11
                                                                                                                                                                                                                                                                     video to be found on the
                                                                                                                                                                     1      0V       *195V     1, 2    0V     16.5V     16.5V                                                                                      Menu Off 08
                                                                                   SUS-DN 110uS                                                                                                                                                                      LVDS cable.                             12
P1                                                                                                                                                                   2      0V       *195V     3, 4    Gnd     Gnd       Gnd                                                                                       Menu On 09
                                                                                                                                                                                                                                                                     NOTE: White noise from                                               Ch1    50.0V      100us      220Vp/p
                                                                                                                                                                     3      0V        0V       5, 6    NC       NC       NC                                                                                        Menu Off 12
                                      Ch1           100V           100us           540Vp/p                                                                                                                                                                           the tuner may cause                     13
                                                                                                                                                                     4      n/c       n/c      7, 8    Gnd     Gnd       Gnd                                                                                       Menu On 13
                                                                                                                                                                                                                                                                     these signals to vary.                                                          52V (AC) rms
         Waveform




                                                                                                                                                                     5      0V        0V      9, 10    5V       5V       5V           VS Adj                         These were taken with                         Menu Off 06
P2                                    62V~57V (AC) rms (Dark to White)                                                                                                                                                                                                                                       14
                                                                                                                                                                     6      0V        *65V    11, 12   5V       5V       5V                                          the unit set to                               Menu On 07
                                                                                                                                          P201                                                                                        R951        VA Adj
                                                                                                                                                                     7      0V        *65V    13, 14 Gnd       Gnd       Gnd                                         component with no input                       Menu Off 14
                                      VR602                         Y-SUSTAIN                                              Pin    Label      STBY         Run                                                                                                                                                15                                                                P2
                           VR601                                                                                                                                                                                                                    R901                                                           Menu On 15
         TP                           Ramp                                                                                 1       Vs         0V          *194V      8      0V        0V      15, 16 Gnd       Gnd       Gnd                                         signal.
                                                                                                                           2       Vs         0V          *194V      9      0V        5V       17      .15V     5V       5V                                                                                        Menu Off 04
                                                                                                                                                                                                                                                                                                             16
                            Set-dn                                         FS202                                           3       nc         nc           nc                                                                                                                                                      Menu On 05
                                                                                                                                                                    10      0V        5V       18      5V       5V       5V
                                                                            (VS)                                           4       Gnd        0V           0V                                                                       SMPS PCB                                                                       Menu Off 16
                                                                          125V 4A                                                                                                              19      0V     3.73V      0V                                                                                  19
                          P204                                                                                             5       Gnd        0V           0V                                                                     POWER SUPPLY                                                                     Menu On 17
           P100




                                                                                                                                                                                               20      0V      3.2V      0V
                                                                No IPMs




                                                                                             No IPMs

                                                                                                                           6       Va         0V          *65V                                                                                                                                                     Menu Off 02
                                                                              Glass




P3                                                                                                                                                                                             21      0V     3.24V      0V                                                                                  20




                                                                                                                                                                                                                                                                                                                                                                           Z-SUSTAIN
                                                                                                                           7       Va         0V          *65V                                                                                                                                                     Menu On 03
                                                                                                                           8       Gnd        0V           0V
                                                                                                                                                                                               22      0V       0V       5V
                                                                                                                                                                                                                                                                                                                   Menu Off 18
                                                                                                                           9       M5V        0V           5V      A/C IN                                                                      P813                                                          21
                                                                                                                                                                                                                                                                                                                   Menu On 19
                                         No IPMs




P4                                                                                                                         10      M5V        0V           5V
                                                                                                                                                                                                                                                                                                                   Menu Off 00
                                                                                                          P201             *Variable according to Label            CN101                                                                                                                                     22
                                                                                                                                                                                                                                                                                                                   Menu On 01
           Y-SUS Drive




                           -VY TP
                            R210                                                                                                                                   SMPS Test 



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