HP 1050c Service Manual - Page 19

NOTE NOTE Troubleshooting Troubleshooting Media Jams/Printhead Crashes If using HP Coated Media when problem occurred, please also refer to Page 1-10, Printhead Crashes/Smears on High Density Prints Using Coated Media. The failure modes "media jam" and "head crash" are grouped together because in many cases a media jam causes the media to lift up into the carriage path and cause a head crash, thus causing many media jam failures to be reported as head crashes. 1 Did the media jam occur when loading media? n If the client has had media jams, it is common for pieces of media to get stuck in the media path. Clear the media path. When clearing a media jam, sometimes media is stuck in the paper path. To clear this, you must lift the media load handles and insert thicker media into the paper path to push out the media that is still stuck there. 2 Is the customer using non-HP media? n The use of non-HP media can easily be the cause of media jams and head crashes (especially head crashes because HP media is specially formulated to avoid cockle, one of the primary causes of head crashes). If the media is not HP approved, advise the customer to use HP media and check to see if the problem is now solved. 3 The Carriage is at the incorrect height in relation to the Center Platen. Adjust the carriage to the correct height ⇒ Page 5-24 and try to load the media again. 4 Check that the Vacuum Fan works correctly - Refer to Page 1-9, Problems with the Vacuum Fan. Troubleshooting Shutdowns If a shutdown occurs, you will get the message "Switch Power Off" followed by: n Check Printhead Cleaner Path. n Check Paper Path. n Check Printhead Path (followed by (1), (2) or (3)). A shutdown in each path will require different steps to resolve the HP DesignJets 1050C and 1055CM Printers Service Manual 1-7