HP Color LaserJet 8550 Multifunction Printer series User Manual
Page 187
186 8 Solving Printer Problems
EN
(Missing colors,
continued)
You might be operating the printer in excessively humid
conditions. Make sure the printer is operating within the
environmental specifications listed in appendix
.
A new toner cartridge was installed without removing all
of the toner packaging. Remove the toner cartridge.
Remove all packaging, verify that the orange tab has
been pulled and the seal has been removed. Reinstall
the toner cartridge.
The printer might not be recognizing that the toner
levels are low. Open the front door, and remove and
reinstall each toner cartridge. Close the front door.
Replace the toner cartridges if
TONER LOW REPLACE
<Color>
or
TONER OUT REPLACE <Color>
appears on
the printer control panel display.
Print is black instead of
color
The color mode is not selected in your application or
printer driver. Select the color mode instead of the
grayscale or black and white mode in your application
or printer driver. For more information, see the online
help for the application or printer driver.
The correct printer driver is not selected in your
application. Select the printer driver for this printer. For
more information, see the online help for the printer
driver.
The printer is not working correctly. Verify the printer
operation by printing a configuration page from the
printer control panel. If no color appears on the
configuration page, contact a local authorized HP
dealer for service.
Inconsistent colors after
replacing the toner
cartridges
You are not using the correct toner cartridges. Use only
the HP toner cartridges that were designed for this
printer. HP has designed the printer, toner cartridges,
and toner formula to work together to give you optimal
image quality from the printer. For part number
information, see “
Accessories, Options, and Related
” later in this chapter.
A new toner cartridge was installed without removing all
of the toner packaging. Remove the toner cartridge.
Remove all packaging, verify that the orange tab has
been pulled and the seal has been removed. Reinstall
the toner cartridge.
Problem
Cause and Solution