HP Designjet T790 HP Designjet T790 and T1300 ePrinter - Image Quality Trouble - Page 22

Corrective action, Then reprint the Image Diagnostics Print - printhead replacement

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Print-quality issues And here is an example of the same printhead in a bad state: Corrective action 1. Clean any faulty printheads (see Using your printer). 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 Using your printer). 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 Using your printer. 5. If the problem still remains, replace any persistently faulty printheads (see Using your printer), or contact HP Support (see Using your printer). 18 Chapter 2 Troubleshooting print-quality issues ENWW

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And here is an example of the same printhead in a bad state:
Corrective action
1.
Clean any faulty printheads (see
Using your printer
). 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
Using your printer
). 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
Using your printer
.
5.
If the problem still remains, replace any persistently faulty printheads (see
Using your printer
), or
contact HP Support (see
Using your printer
).
18
Chapter 2
Troubleshooting print-quality issues
ENWW
Print-quality issues