HP 1050c Service Manual - Page 71

Monitor Setup Used Insert NOTE HP No.80 Ink Supplies Troubleshooting When this message is displayed it means that the printhead has reached its life expectancy. To find out how to see the amount of ink consumed by the printhead and the usage time, go to page 3-9, Obtaining Printhead Information. Printhead life is anticipated to be 700ml or twelve months (9,000 hours) in the printer, whichever occurs first, provided that the printhead is used under normal operating conditions (using HP ink cartridges only) and its "install before date" has not lapsed. However results vary depending on the print quality setting used. The printer will attempt to warn the user when this stage is reached with the monitor message. Even with the monitor message being displayed good image quality can still be obtained, but it could start degrading. The customer will have to check the images being printed and decide if they are of an acceptable print quality. If the customer wants to ensure optimum print quality with maximum unattendedness, they should consider buying a new printhead and replacing the old printhead with a new one. Printhead Status Messages While Replacing The following are the printhead status messages that may be displayed while replacing the Printheads. The Printer has detected that a Setup Printhead is installed. The Printer has detected that a USED Setup Printhead is installed. No Printhead has been detected in that Carriage stall. If a Printhead is installed in the Carriage stall when this status message is shown: 1 Reseat the Printhead, making sure it is installed correctly. 2 Clean the Carriage and Printhead flex circuits using the Carriage Interconnect Wiper ⇒ Page 3-18. 3 Replace the Printhead. 4 Perform the Electronic Systems Test ⇒ Page 4-5. If all 4 Printheads are installed but have the Status message "Insert", it is possible that the Carriage Assembly is faulty. HP DesignJets 1050C and 1055CM Printers Service Manual 3-15