HP 0706124 REV B - Manual (Page 126)

5-14 Cleaning the Carriage Rail
Cleaning the
Carriage Rail
Maintenance interval: at Maintenance Clock Alarm.
The carriage rail carries the printhead carriage across the width
of the platen. If dust or other particles accumulate on the rail,
the material could accumulate on the carriage wheels (bearings)
and cause banding in printed output or noisy carriage motion.
To clean the rail, wipe it with a water-moistened cloth or paper
towel. Be sure to remove any excess water from the rail before
resuming printing.