HP C7769B Service Manual - Page 264

Preventive Maintenance NOTE displays the following message: "Maintenance Advised" The Maintenance Advised message could also appear when the Spittoon in the Service Station is full. The Printer Information utility 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. NOTE Scan-Axis Maintenance In addition to the wearing of the Scan-Axis Motor and the Ink Tubes System, 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. It also requires the replacement of the Ink Tubes System. The most important parts to keep clean are the upper and internal sides of the rods. 9-4 HP DesignJets 500 and 800 Series Printers Service Manual