HP 98SI Do not allow any part of the gauge to touch, Printheads, and do not leave the gauge on

The carriage must be lowered below the height of the gauge and then raised. If the carriage is simply lowered on top of the gauge, the carriage will tend to settle lower during print- ing, changing the head height and invalidating the calibra- tions.

Caution	Do not allow any part of the gauge to touch the
	printheads, and do not leave the gauge on the
	platen after setting the head height. If the gauge is
	allowed to touch or strike the printheads, the print-
	heads could be damaged permanently and require
	replacement.

9.Turn the head height adjustment screw clockwise, just until the end of the gauge slides under the carriage.

10.Remove the gauge and repeat steps 7 through 9 at the other side of the carriage.

11.Verify the heights at both sides of the carriage and adjust if necessary.

5-14 Set the Printhead and Camera Height