HP 9100 series - Manual (Page 151)

ENWW Replacing the ink cartridges 149
Replacing the ink cartridges
The ink gauges on the control-panel display depict the ink level. Replace an ink cartridge
when the ink level is low or when the ink cartridge is empty.
z Ink level low
When the ink level for a cartridge is low (less than 16 percent full), a blinking
ORDER
[COLOR][ CARTRIDGE message appears on the control-panel display.
z Ink cartridge empty
When an ink cartridge is empty, a blinking
REPLACE [COLOR] CARTRIDGE message appears
on the control-panel display.
All four ink cartridges must be correctly installed in order for the all-in-one to work.
To replace an ink cartridge
Follow the instructions that are included with the ink cartridge.
Replacing the printheads
You might need to replace printheads when the following messages appear on the
control-panel display:
Replace [color] printhead
Incompatible [color] printhead
Cleaning might prolong the life of printheads, even when these messages occur. Try cleaning
the printheads or the printhead contacts before you replace them. See
Cleaning the
printheads and Cleaning the printhead contacts for more information.
To replace a printhead
Follow the steps under Cleaning the printhead contacts , but skip the steps that apply to
cleaning the printhead contacts.