HP 7800 - Manual (Page 41)

Printer screen status indicators
The printer screen has two status indicators: one for print cartridge status, and
another for paper status.
This indicator... Has this meaning...
When the print cartridge status indicator
is on solid (not flashing), the ink level
is low.
When the print cartridge status indicator
is flashing, either the ink level is too
low to print, or there is a problem with
the print cartridge that needs attention.
Make sure that you have inserted the
correct print cartridges for the printer.
For more information about which
problem has occurred, connect the
printer to your computer and read the
instructions on the computer screen.
If the ink is out on one of the print
cartridges, the arrow on the printer
screen will tell you which one to replace.
When the print cartridge status indicator
has a right arrow next to it, the
right print cartridge needs to be replaced.
When the print cartridge status indicator
has a left arrow next to it, the left
print cartridge needs to be replaced.
When purchasing replacement
cartridges, refer to the cartridge
numbers that appear on the back cover
of this guide. For more information, see
Inserting and replacing the print
cartridges
When the paper status indicator is
flashing, either there is a paper jam or
the printer is out of paper.
Chapter 6
38 HP Photosmart 7800 series