Friday, November 23, 2012

DYNEX - PRIMA DX-LCD22-09 _ LC-22HV40 _ SERVICE MODE AND ADJUSTMENTS _ LCD TV




TO ENTER SERVICE MODE

  1. Press “INPUT”, “2”, “5”, ”8” and “0” one by one to enter level-one factory menu.
  2. Press “▲” and “▼” to move the cursor to the adjustment page of the level-one factory menu then press “ENTER” or “►”to enter.
  3. Press “▲” and “▼” to move the cursor up and down.
  4. When the cursor move to a certain adjust item, press “◄” and “► “ to adjust value.
  5. Press “MENU” to exit to the previous factory menu.
  6. Press “EXIT” to exit the factory menu.
  7. After exit the factory menu, press “SLEEP” to enter the factory menu again as long as power on.

“Power on mode” item of “Other setting” menu: on= turn on; off =standby; memory=memory function of turn on.

WHITE BALANCE ADJUSTMENT

     Before adjustment, the unit should keep working for over 30 minutes to be in a stable status. Use BBY channel of CA210 and only adjust the color temperature of 9300K(COOL). In order to make sure the color temperatures of 8000K and 6500K are up to the master, please keep the color
temperature of light level be X=285±2 Y=293±2 and the low level be X=285±5 Y=293±5 when adjusting.

     VD AGC Gain correction: select the 21 channel in AIR mode, enter factory menu VD AGC Setting and select VD AGC Gain, press “►” till display “OK”, then press “MENU” to return to the previous menu. 

     White balance adjustment: enter the factory menu Color Temp, set Color Mode to Cool first, a 11-step gray scale picture will appear, fix Gain Green, adjust Gain Red, Gain Blue to let the color coordinate of the ninth level to be (285, 293); fix Offset Green, adjust Offset Red, Offset Blue to let the color coordinate of the third level to be (285, 293). Adjust Gain Red, Gain Blue, Offset Red and Offset Blue repeatedly until the value of the two levels gray scale are (285, 293) then press MENU to return to the previous menu or press Save to EEPROM to store the value.

     Check if the color temperatures of Normal and Warm are up to the mustard, if not, adjust Gain Red Gain Blue, Offset Red and Offset Blue till they are accord with the requirement.

DTV ADJUSTMENT [SAME FOR HDMI]

     Select the 26 channel in AIR mode, enter the factory menu Color Temp, set Color Mode to Cool first, a 11-step gray scale picture will appear, fix Gain Green, adjust Gain Red, Gain Blue to let the color coordinate of the ninth level to be (285, 293); fix Offset Green, adjust Offset Red, Offset Blue to let the color coordinate of the third level to be (285, 293). then press MENU to return to the previous menu or press Save to EEPROM to store the value.  Check if the color temperatures of Normal and Warm are up to the mustard, if not, adjust Gain Red, Gain Blue, Offset Red and Offset Blue till they are accord with the requirement. 

YPbPr adjustment

     ADC correction: Input 480i/60Hz signal of 75% color bar and gray scale to YPbPr (VG848 Timing 968, Pattern 918), enter the factory menu ADC Setting and perform ADC Auto.

     White balance adjustment: input 1920x1080I/60Hz of 8-level gray scale signal to YPbPr from VG848 YPbPr channel, enter the factory menu Color Temp, set Color Mode to Cool first, fix Gain Green, adjust Gain Red, Gain Blue to let the color coordinate of the seventh level to be (285, 293); fix Offset Green, adjust Offset Red, Offset Blue to let the color coordinate of the second level to be (285, 293). Adjust Gain Red, Gain Blue, Offset Red and Offset Blue repeatedly until the value of the two levels gray scale are (285, 293) then press MENU to return to the previous menu or press Save to EEPROM to store the value.
     Check if the color temperatures of Normal and Warm are up to the mustard, if not, adjust Gain Red, Gain Blue, Offset Red and Offset Blue till they are accord with the requirement.

VGA adjustment.

ADC correction: Input VESA 800x600/60Hz signal of chess to VGA (VG848 Timing 854, Pattern 914), enter the user menu ADVANCED and perform AUTO to display the whole picture, enter the factory menu ADC setting and perform ADC Auto to correct ADC.
White balance adjustment: input 800x600I/60Hz of 8-level gray scale signal to VGA from VG848 VGA channel, enter the factory menu Color Temp, set Color Mode to Cool first, fix Gain Green, adjust Gain Red, Gain Blue to let the color coordinate of the seventh level to be (285, 293); fix Offset Green, adjust Offset Red, Offset Blue to let the color coordinate of the second level to be (285, 293). Adjust Gain Red, Gain Blue, Offset Red and Offset Blue repeatedly until the value of the two levels gray scale are (285, 293) then press MENU to return to the previous menu or press Save to EEPROM to store the value.
Check if the color temperatures of Normal and Warm are up to the mustard, if not, adjust Gain Red, Gain Blue, Offset Red and Offset Blue till they are accord with the requirement.