Panasonic TX-25V70T — процедура настройки телевизора: шаги и рекомендации [5/50]

Adjustment Procedure Item Preparation Adjustment Procedure Confirm the DC voltages at the indicated test points as follow B Voltage 1 Operate the TV set 2 Set the Beam current to 0 RF AGC 1 Set the TV to Market Mode RF AGC Adj 2 Receive a colour bar signal at an RF level of 63dB with 75Q loaded 3 Connect a digital multimeter to TPE1 set to DC mode High Voltage 1 Operate the TV set 2 Set the Beam current to 0 TPE30 12 0 1 0V TPE32 5 0 1 0V E35 15 142 0 2 0V TPE31 9 0 1 0V E33 1 220 0 15 0V 1 Adjust RF AGC Control in Market Mode such as to procedure a snowy picture 2 Adjust RF Control to set it at the point just before voltage at TPE1 begins to drops 2 Increase the input level by 2dB and confirm the voltage at TPE1 changes 1 Connect a DC voltage meter to Cathode of D852 and confirm the voltage is 142 0 2 0 V 2 Connect a high voltage meter to an anode of the picture tube 3 Confirm that the high voltage is within the range of 31 0 0 7 1 5kV Item Adjustment Waveform Sub Contrast Sub Brightness 1 Receive a colour bar pattern Connect an oscillo scope to TPE38 G OUT and chassis earth 2 Set Colour Brightness and Contrast to Normal 3 Set the picture menu to Dynamic mode 4 Connect a short jumper between TPE35 and TPE32 Note that this step disable the ABL so avoid operation in this condition for long periods at high beam current 5 Set the TV to Market Mode as shown in Fig 4 6 Adjust Brightness Level by Sub brightness con trol by pressing either the volume UP or DOWN buttons on the TV set as shown in Fig 5 2 6 0 2V 7 Adjust Contrast Level by Sub contrast control by pressing either the volume UP or DOWN but tons on the TV set as shown in Fig 5 3 7 0 1V 8 Cancel the CHK mode by pressing the Normal button on remote control transmitter and remove the jumper wire between TPE32 to TPE35 CHK SRICSI COLOUR Fig 4 f 3 7 0 1V by Sub Contrast Pedestal Level 2 6V 0 2V by Sub brightness 1 DC 0V Fig 5