28
Using and Caring for Your Print Cartridges
3
When the Print Cartridge Status Light flashes, open the printer’s top cover and 
follow the instructions below. For more information on replacing print cartridges 
see page 29.
If the arrow points to... It means... To solve the problem...
Problem with color print 
cartridge
The print cartridge is either:
• missing
• improperly installed
• the wrong print cartridge for 
the printer
• defective
1 Insert a print cartridge if it is
missing.
2 Remove and reinsert the 
existing print cartridge.
3 If there is still a problem, verify 
that the cartridge is an 
HP C6578 Series cartridge.
4 If the problem persists, replace 
the cartridge.
Problem with black print 
cartridge
The print cartridge is either:
• missing
• improperly installed
• the wrong print cartridge for 
the printer
• defective
1 Insert a print cartridge if it is
missing.
2 Remove and reinsert the 
existing print cartridge.
3 If there is still a problem, verify 
that the cartridge is an 
HP 51645 Series cartridge.
4 If the problem persists, replace 
the cartridge.
Color print cartridge low on ink Color print cartridge is running 
low on ink.
Consider replacing the color 
cartridge with an HP C6578 Series 
cartridge.
Black print cartridge low on ink Black print cartridge is running 
low on ink.
Consider replacing the black 
cartridge with an HP 51645 Series 
cartridge.
Print cartridges OK Print cartridges are 
operational.
No problems.