HP 1055CMHP - Manual (Page 19)

Troubleshooting
1-7 HP DesignJets 1050C and 1055CM Printers Service Manual
Troubleshooting Media Jams/Printhead Crashes
NOTE 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.
NOTE 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