GRAPHTEC SignJet JS310-25ES Service Manual page 102

Symptom
The color hues of the printed
results are strange.
The reverse side of the media is
dirty.
Black streaks or white streaks
appear in the printed results.
JS310-UM-251-9370
Cause
Ink is not being emitted correctly.
The color profile is not correct.
Printhead adjustment has not been
performed.
Incorrect ink selection.
The printing platform is dirty.
The media was taken up before it was
dry.
Incorrect feed adjustment.
Incorrect printhead position adjustment. Perform the printhead position adjustment
Nozzles are not firing or a jet trajectory
error has occurred.
95
11. Troubleshooting
Solution
If there is a bend in one of the ink tubes,
ink will not be supplied to the printhead.
Check whether there is a bend in the ink
tubes connected to the ink tank, or in the
inlet tubes.
Check whether the color profile matches
the media being used. Be sure to use a
color profile that matches the media.
Follow the printhead adjustment
procedure described in this manual.
Check whether genuine Graphtec ink is
being used with the printer (see Section
8.1 Setting the Printhead Drive Voltage).
Clean it.
If the drying fan is not operating, there is
not sufficient time for the ink to dry. Be
sure to use the drying fan.
If the data has a high printing density,
the drying time may not be sufficient.
Choose one of the following solutions.
• Reduce the printing density of the data.
• Reduce the printhead carriage speed.
• Increase the number of passes.
Perform the feed adjustment procedure
described in this manual (see Section 8.8
Media Feed Amount Compensation).
procedure described in this manual
(see Section 8.6 Adjusting the Positions
of Print heads of the Same Color, and
Section 8.7 Adjusting the Positions of
Print heads of a Different Color).
Print the nozzle check pattern to check
the nozzles (see Section 8.5 Printing the
Nozzle Check Pattern).
If there are several nozzles that are not
firing, perform a printhead cleaning
operation (see Section 8.5 Printing the
Nozzle Check Pattern).