
Chapter 3---Service Adjustments
9.View B.
10.Rotate the blue CRT deflection yoke to achieve a level image at the center of the screen (it should be parallel to the green and red grid center lines).
11.Retighten the yoke clamp so it is secure. Be careful not to
12.Tilt the electronics module back into place.
13.Replace the allen screw from Step 4 above.
14.Replace the rear cover.
15.After Yoke rotation,
3.3 Vertical Size Tracking
If the R or B vertical size does not match G, adjust the R and B vertical size pots on the Vertical Deflection Board (see Figure
NOTE: The tracking pots are factory adjusted and should not normally need adjustment. The Green Vertical Size control
➨The Red Vertical Size control is
➨The Blue Vertical Size control is
To adjust the vertical size controls:
1.Press Test 2 to display the White
2.Remove the rear projector cover.
3.Remove the eight screws holding the electronics module cover and remove the cover.
4.From the Convergence menu select #3, CLEAR CONVG AXES.
5.Position R and B over G (using the POS and arrow keys on the
6.Adjust R328 and R428 so that the Red and Blue vertical sizes match the Green vertical size.
7.If unable to match Red or Blue to Green, adjust Green to match the smallest color.
8.Replace the electronics module cover.
9.Replace the rear projector cover.
Model 330, 340SC, 370SC Service Manual |