HP 1660 Series Service Manual page 140

Enter the Sys PV tests, then enter the Display Test.
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A grid pattern should appear.
If the display is tilted (rotated), adjust the CRT yoke by rotating it to straighten the
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display.
Yoke
If the grid pattern is not centered horizontally, adjust the H-Hold.
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If you need to adjust the intensity, go to the next page.
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If you are finished with the adjustments, turn off the instrument, then remove the
power cord. Install the cover on the instrument.
Calibrating and Adjusting
To adjust the CRT monitor alignment
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