HP DesignJet 500 - Manual (Page 229)

Media & Ink Introduction Front-Panel Other Index Solutions
Printer
Options
Maintaining the Printer Specifications Ordering Accessories Online Help Glossary
Lens Maintenance
The optical sensor on the printhead carriage has a lens
cover to protect if from ink mist and other contaminants.
The lens cover is located on the lower right side of the
carriage. Over time, this lens cover will get dirty and need to be
replaced. When the printer detects that the lens cover
is dirty, it will display the message:
You should replace the lens cover to prevent any
problems with printer operations due to the optical
sensor.
Replacement lens covers are provided with your printer
and are stored inside the window of the printer. You
may replace the lens cover immediately when you see
the message or wait until the next time you need to
replace a printhead.
NOTE: You can continue to print if Lens
Maintenance is displayed, but after awhile the
printer will not be able to continue and the
front-panel will display a “System Error”.
Lens Cover
Lens Maintenance
Roll
Printheads
Advised
Ink
Hewlett Packard
Heavy Coated
OK
OK