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Troubleshooting > Troubleshooting When Printing Image
5
Clog up nozzle correction
Nozzle Correction (Chapter 18) in Operation Guide
In case that no improvement is observed, contact your dealer or service representative.
Vertical void line (Landing of ink is shift)
1
Check media setting
Media Type and Media Weight (Chapter 15) in Operation Guide
When using paper with slow infiltration, configure the unsupported paper mode.
1 [Home] key > [...] > [Professional Settings] > [U744 Head Cleaning] > [04 Config] > [05
UnsupportPpr Mode]
2 Select [On] > [Start] key.
In case that no improvement is observed, then go to next step.
2
Adjust the ink density for each nozzle
Discharge is disturbed by its low velocity since the head drive voltage is set as less 1.
1 [Home] key > [...] > [Professional Settings] > [U750 Set Head Coefficient]
2 Check if there is any head drive voltage set as less 1.
3 Change the head voltage to 1, using [+] if it is not > [Start] key > [Stop] key.
4 If the problem is not solved, go to the next step.
3
Execute print head cleaning
Ink get dried in nozzle. Bubble is in nozzle. Paper dust or foreign material is on nozzle.
1 Load SRA3/Ledger size paper.
2 [Home] key > [...] > [Professional Settings] > [U744 Head Cleaning] > [02 Check]
A nozzle check pattern is printed.
3 Align the mark on the chart arrow with the mark on the upper left corner of the platen glass.
As shown in the illustration, place the pattern on the glass platen with the printed side down
and the edge with the arrows toward the back.
This mode does not support printing from the Fiery controller.
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