HP Deskjet 450 Mobile Printer series - Manual (Page 54)

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For Windows 2000 and Windows XP, make sure the Use Printer Offline
option is not checked. Click Start > Settings > Printers . In the Printers
folder, right-click the printer icon, and then make sure Use Printer Offline
is unchecked in the pop-up menu.
For Windows, make sure the Print to file option is not checked in the Print
dialog box.
For Windows, try checking Print directly to the printer from the
Advanced tab in the Printer Properties dialog box.
Check the print media
Make sure print media is loaded correctly in the input tray and that the
media is not jammed in the printer.
Check the print cartridges
Make sure the protective film has been removed from the print cartridges.
Make sure the print cartridges are properly installed. Properly close the
front access cover.
Try printing a demo page
Hold down the P OWER BUTTON and press the R ESUME BUTTON once.
Check the hard disk space in your system
If you are printing in high-resolution mode, make sure you have at least
50 MB of hard disk space.
Check the wireless sending device
See Wireless printing problems .
Printer takes a long time to print
Check your system configuration
Make sure your computer meets the minimum system requirements for the
printer. For information about system requirements, see
Printer
Specifications .
Check the hard disk space in your system
If you are printing graphics-intensive files, make sure you have at least
50 MB of hard disk space.
Check your port setting (Windows 98 only)
The port setting configuration in your system might not be set to ECP
(enhanced capability port). See your computer manual for information
about how to change your port setting, or contact your computer
manufacturer.