HP Scitex FB950 Printer series - Manual (Page 75)

4. Lubricate the lower carriage-wheel strip from end to end on the rail (moving the carriage to clean
the full length of the rail).
NOTE: Even if the oiled cloth appears clean, it should be discarded quarterly so that the oil does
not become sticky.
ENWW Clean and oil rail carriage-wheel strips (bi-weekly) 69