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6 Close the cover
If the printing quality deteriorates you can
quickly clear the print head and test the
nozzles with a print-out showing their
condition.
Function
Press the Function button until the display
F
shows
Display shows
Start
Either
If the print head is new, press the
button. Your PaperJet 55 performs a print
Start
test.
Or
If the print head is not new, press to display
Volume
Display shows
Start
Your machine performs a print test.
Start
To cancel, press the
Stop
To interpret the print test, see page 12.
If the printout shows
then you should clean the printhead
contacts, see opposite.
46
FRONT OF MACHINE
button.
Lift the printer compartment cover.
Remove the print cartridge and head.
Use a slightly damp cloth to clean the electrical
contacts taking care not to touch the nozzles.
Use a slightly damp cloth to clean the electrical
contacts of the carriage inside the machine.
Replace the print head and cartridge.
Close the cover.
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