HP Deskjet 450 Mobile Printer series - Manual (Page 52)

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Getting printer information
If you need to call the Customer Care Center, you should print a diagnostic
page and a configuration page to obtain printer information. Such information is
useful to our Customer Care Center in helping you troubleshoot printer
problems. You can also get printer information from the Toolbox by clicking
Printer Hardware under the Information tab. Information on the printer,
battery, connectivity, and media types used is available.
Printing diagnostic and configuration pages
The diagnostic page contains detailed printer information, including firmware
version number, serial number, service ID, and print cartridge information.
The configuration page contains information such as default page settings,
printer media settings and Bluetooth connectivity status.
To print a diagnostic page:
Hold down the P OWER BUTTON and press the R ESUME BUTTON 4 times.
To print a configuration page:
Hold down the P OWER BUTTON and press the C ANCEL BUTTON 4 times.
Printing a demo page
To verify that your printer is working, print a demo page:
Hold down the P OWER BUTTON and press the R ESUME BUTTON once.
However, if you want to verify that the printer is connected to the computer
correctly, or that the printer software is working correctly, you need to print a
test page from the General tab in the Printer Properties dialog box (Windows) or
the Inkjet Utility Panel (Macintosh).
If the test page does not print, see Printer is not responding (nothing prints) .
Solving printer problems
The following sections provide solutions to common printer problems.
Printer is not responding (nothing prints)
Check the power
Press and hold the P OWER BUTTON on the printer for a few seconds. After a
brief printer startup, you should see a steady green light next to the button.
The printer must not be processing any print jobs while you print the diagnostic
or configuration pages.