HP Deskjet 450 Mobile Printer series - Manual (Page 48)

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3 Click Calibrate to calibrate the color, or click Use Defaults to restore color
values to factory defaults.
4 Follow the instructions on the screen.
For Macintosh
1 Open the HP Inkjet Utility and click the Calibrate Color button.
2 Follow the instructions on the screen.
Replaceable ink service module
The replaceable ink service module holds waste ink from the black print
cartridge. When it is almost full, the printer LEDs will prompt you to replace it.
See
LED Reference .
When the ink service module is full, the printer will stop printing. If you have a
replacement for the ink service module, replace it immediately by following the
instructions that come with it.
Otherwise, visit www.hp.com/support/dj450 or see Customer Support to get a
replacement. In the meantime, remove the black print cartridge to continue
printing. The printer can print using only the tri-color print cartridge but the color
results and print speed may be affected. See
Single-cartridge printing mode .
Allowing the ink service module to fill completely can result in black ink spillage.
If you have installed the Toolbox, you can choose to display error messages on
your screen when there is a problem with your printer. See
Installing the printer
driver (Windows and Macintosh) .