SECTION 6
TROUBLESHOOTING
111
Clogged/Damaged/Dead Nozzles:
The Memjet printhead cartridge contains 70,400 inkjet nozzles. These nozzles are divided into ten rows, two rows of
nozzles for each color channel. Due to the extremely high number of nozzles, it is not uncommon for some nozzles
to become contaminated, dehydrated or clogged.
Clogged/damaged/dead/ nozzles will show as thin, crisp, vertical lines of missing color.
Multiple adjacent nozzles, with same issue, will show as wider, crisp, vertical lines of missing color.
Clogged nozzles - normally due to Printhead nozzle dehydration or partial contamination.
Damaged nozzles - normally due to improper cleaning or debris on wiper roller causing damage to Printhead.
Dead nozzles - normally due to the nozzles reaching their “end of life” (printed over 125,000 linear inches).
Possible Solutions:
• Press the “Full Clean Printhead” button, located in the “Maintenance Menu”.
• Manually clean the printhead nozzles using distilled water and a lint free cloth.
• Set the following Toolbox features as follows, to see if increased head maintenance will reduce this type of
issue during print jobs. KWS Setting (Medium) and Mid-Job Servicing (50).
• Replace the Printhead cartridge and Wiper Roller.
Tip: To help reduce nozzle dehydration, caused by long periods of printer sitting idle, print multiple (4-6) “Print
Color Bars” test pages to exercise nozzles and keep nozzles hydrated.
NOTE: A similar print pattern, to the one shown above, can be performed using the “Print Ink Channels” button,
located in the Toolbox, “Test Print” drop-down menu.
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