HP DesignJet 500 - Manual (Page 153)

Media & Ink Introduction Front-Panel Other Index Solutions
The Front-Panel Setup Menus Consumable Menus Internal Prints Navigation
Message
Descriptions
Printer
Options
Status Codes
The tables in Printhead Status Messages for example,
show the status numbers with the action message
‘reseat’ or ‘replace’ next to them. Perform the Action
message first ‘recover’, reseat or ‘replace’, if this does
not solve the problem, refer to the status numbers in
the table and perform the relevant procedures.