HP 1055CMHP - Manual (Page 286)

Preventive Maintenance
9-4
HP DesignJets 1050C and 1055CM Printers Service Manual
panel displays the following message:
"Maintenance Advised"
The Service Configuration Print also conveys the usage
information, and it is accessible by the user.
Once the maintenance advised message is displayed, the preventive
maintenance kit must be used to replace the most worn parts of the
printer. Use the Removal and Installation Chapter of this Service
Manual as a guide to replace the necessary parts.
Preventive Maintenance Kit - Part Number C6072-60143
Scan-axis Maintenance
In addition to the wearing of the Scan-axis motor, the friction in this
area can increase due to the accumulation of ink particles and dust
from the media or the atmosphere in the vicinity of the slider rods.
Scan-axis maintenance requires the cleaning of the slider rods
properly, and a lubricant to apply onto the rods.
NOTE The most important parts to keep clean are the upper and
internal sides of the rods.