Since the S62A chassis has a built-in dynamic focus circuit,
take care when adjusting the focus. When the CRT PCB, FBT or CRT has been
replaced, the focus has to be adjusted according to the following procedures.
- Display the CROSS Hatch pattern.
- Set the Screen Adjustment to "View as Standard".
- Turn the Static Focus VR clockwise to the maximum position. (End of clockwise direction)
- Turn the Dynamic Focus VR counter clockwise to the maximum position. (End of counter clockwise direction)
- Slowly turn the Static Focus VR counter clockwise so that the center vertical line is the most clearly displayed.
- Slowly turn the Dynamic Focus VR clockwise so that the 2nd line is the most clearly displayed.
- Check the entire screen focus and repeat steps 3 to 6, if necessary.
SCREEN VOLTAGE ADJUSTMENT
- Select "Info => Menu => Mute => Power On" to enter Service Mode.
- Initialize all settings to the values appropriate to the corresponding model.
- Display the Toshiba pattern.
- Using an Oscilloscope, measure the size of RK, BK and GK to the Pedestal Level.
- Adjust the Screen VR of FEB so that the highest point of the Pedestal Level is 175V.
WHITE BALANCE ADJUSTMENT
- Initialize all settings to the values appropriate to the corresponding model.
- Select "Info => Menu => Mute => Power On" to enter Service Mode.
- Initialize all settings to the values appropriate to the corresponding model.
- Display the Toshiba pattern and adjust the White Balance using CA100 with the coordinates of the corresponding model.
Adjust Sub Bright to set Y.
Adjust B Cutoff to set y.
Adjust R Cutoff to set x.
Enter Video Adjust1 of Service Mode. Adjust High/Light.
Adjust Sub Contrast to set Y.
Adjust B Drive to set y.
Adjust R Drive to set x.
Check Low/Light and readjust it if its value has been
changed.
If you have readjusted Low/Light, readjust High/Light until
the two values are identical to the coordinates of the corresponding model.
White Balance Standard Data
Check List for the Screen Voltage and White Balance
Adjustment
- The Screen Voltage and White Balance are connected each other, and both of them have to be configured to the correct values.
- Adjust the White Balance after the Screen Voltage was adjusted, and check if the Screen Voltage is normal after adjusting the White Balance.
- If the White Balance is readjusted, check the Screen Voltage again.
- When the adjustment is finished, check the following checklist.
- If there is a spot on the screen when turning the TV set off/on, adjust the Screen Voltage again.
- If there is a ghost line on the screen, adjust the Screen Voltage again.
