Panasonic TX-25V70T — процедура настройки баланса белого для CRT дисплеев [7/50]

Adjustment Procedure For White Balance Item Adjustment Adjustment Procedure CRT CUT OFF I Over 15 minutes aging is required 2 Colour contrast level is centre 3 Highlight is centre Lowlight position is 4 DAC R and B 8 DAC for G of On screen display bar from left side 4 Screen volume is minimum 5 Input a flat white Field signal and set Contrast to minimum 6 Connect an oscilloscope to TPY7 ON L Board Green CRT drive and GND 7 Set the TV to Market Mode 8 Press the Function button S1106 to select BR meaning brightness Note that repeated pushing of the Function button cycles through the CRT adjustment as shown inFig 10 Operation of the Function Button S1106 in CRT Adjustment Mode Fig 10 9 WHILE BR IS STILL ON SCREEN set the screen control to minimum by turning it an clockwise and use the Volume up or down button S1104 and S1103 to set the DC 0V to video level at 190V as shown in Fig 11 10 Advance the screen control of FBT sufficiently to see the OSD WHILE BR IS STILL ON SCREEN push the Function button to bring it up again if necessary push the OFF Timer But ton This will collapse the vertical scan 11 Slowly adjust the screen control of FBT such that one of the G beam just appears across the centre of the screen Fig 12 50V div DC 0V 190 0 2 0V Fig 11 Sub bright adjustment THIS IS THE SETTING POINT FOR THE SCREEN CONTROL Note which colour appeared and DO NOT ADJUST THE LOWLIGHT SET TING FOR THIS PARTICULAR CO LOUR IN THE FOLLOWING PROCE DURE PUSH THE OFF TIMER BUTTON WHILE BR IS STILL ON SCREEN TO COLLAPSE THE FRAME SCAN ADJUST SCREEN UNTIL ONE COLOUR JUST APPEAR Fig 12