1960 SERVICE MANUAL
C) WHITE BALANCE ADJUSTMENT
Input Signal: Full White Video - VGA mode
Drive VRs: VR502, VR532, VR562.
Bias VRs: VR910, VR940, VR970.
la. Set Brightness & Contrast to minimum.
b. First adjust VR940 to its center position.
Then adjust VR970 so that Y = 0.329
and adjust VR910 so that X = 0.313
2a. Set Brightness & Contrast to maximum.
b. Adjust VR532 for 45Vp-p of the G. gun input at the cathode.
3a. Set Brightness to center detent & Contrast to 10 FI.
b. First adjust VR562 so that Y = 0.329
then adjust VR502 so that X = 0.313
4a. Set Brightness to maximum & the G2 voltage just before the raster
appears.
b. Check the white balance in the VGA mode.
5a. Set Brightness just before the raster disappears.
b. Repeat steps 2b. to 5b. until the best white balance is obtained.
D) FOCUS ADJUSTMENT
Input Signal: Dot Test Pattern
1. Set Brightness & Contrast for a normal display.
2. Adjust the focus control at the high voltage resistor block to obtain the
best focus over the entire display area.
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