HP DesignJet Z5600 User guide - Page 153

Corrective action, Then reprint the Image Diagnostics

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If you see horizontal lines in part 1 and also missing dashes in part 2 for the same color, the printhead responsible needs cleaning. However, if the rectangles look solid, do not worry about just a few missing dashes in part 2; these are acceptable because the printer can compensate for a few clogged nozzles. Here is an example of a gray printhead in a good state: And here is an example of the same printhead in a bad state: Corrective action 1. Clean any faulty printheads (see Clean the printheads on page 149). Then reprint the Image Diagnostics Print to see whether the problem has been solved. 2. If the problem remains, clean the printheads again, and reprint the Image Diagnostics Print to see whether the problem has been solved. 3. If the problem remains, consider cleaning your printheads manually (see Clean the printheads on page 149). You could also try reprinting your current print job, in case it now prints satisfactorily. 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 149. 5. If the problem still remains, replace any persistently faulty printheads (see Handling ink cartridges and printheads on page 99), or contact HP Support (see Contact HP Support on page 164). ENWW The Image Diagnostics Print 145

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If you see horizontal lines in part 1 and also missing dashes in part 2 for the same color, the printhead
responsible needs cleaning. However, if the rectangles look solid, do not worry about just a few missing dashes in
part 2; these are acceptable because the printer can compensate for a few clogged nozzles.
Here is an example of a gray printhead in a good state:
And here is an example of the same printhead in a bad state:
Corrective action
1.
Clean any faulty printheads (see
Clean the printheads
on page
149
). Then reprint the Image Diagnostics
Print to see whether the problem has been solved.
2.
If the problem remains, clean the printheads again, and reprint the Image Diagnostics Print to see whether
the problem has been solved.
3.
If the problem remains, consider cleaning your printheads manually (see
Clean the printheads
on page
149
). You could also try reprinting your current print job, in case it now prints satisfactorily.
4.
If the problem remains, try cleaning the printhead drop detector. The printer normally
notiļ¬es
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
149
.
5.
If the problem still remains, replace any persistently faulty printheads (see
Handling ink cartridges and
printheads
on page
99
), or contact HP Support (see
Contact HP Support
on page
164
).
ENWW
The Image Diagnostics Print
145