Focus Adjustment; And Height Adjustments - HP 54501A Service Manual

4-8. Focus Adjustment and Horizontal Phase Adjustments
1 .
Adjust sweep board H . PHASE to center menu horizontally on the CRT screen .
4-9 . Vertical Linearity and Height Adjustments
NOTE
The V. LIN and HEIGHT adjustments are interactive and may need to
be repeated as necessary .
3 .
Readjust steps 1 and 2 as necessary for a uniform display of the screen menu .
HP 54501A ADJUSTMENTS
2 .
Adjust sweep board FOCUS control for sharp percent symbol (%) on the top and bottom
blocks of text.
1 .
Adjust sweep board V . LIN for equal height of corner squares . Square height should be ap-
proximately 25 mm.
2.
Adjust sweep board HEIGHT to give the screen menu top and bottom borders equal to ap-
proximately 1 cm .