4. If the problem remains, try cleaning the printhead drop detector. The printer normally notifies you when
this is necessary, but it may be worth trying even if the printer has not suggested it. See
Clean the
printhead drop detector on page 146.
5. If the problem still remains, replace any persistently faulty printheads (see
Handling ink cartridges and
printheads on page 96), or contact HP Support (see Contact HP Support on page 163).
If you still have a problem
If you still experience print-quality problems after applying the advice in this chapter, here are some further
things that you can do:
●
Try using a higher print-quality option. See
Printing on page 50.
●
Check the driver you are using to print with. If it is a non-HP driver, consult the driver vendor about the
problem. You could also try using the correct HP driver, if feasible. The latest HP drivers can be
downloaded from
http://www.hp.com/go/Z5400ps/drivers.
●
If you are using a non-HP RIP, its settings may be incorrect. See the documentation that came with the
RIP.
●
Check that your printer's firmware is up to date. See
Update the firmware on page 108.
●
Check that you have the right settings in your software application.
ENWW If you still have a problem 143
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