Printhead Alignment
The printhead alignment diagnostic print shows several groups of vertical lines, each one printed in one color
and with different carriage speeds (30, 40 and 60 inches per second).
The aim of the diagnostic is to detect printhead alignment problems by looking at how straight the three
groups of thin vertical lines that go from top to the bottom are.
If the diagnostic shows severe straightness / continuity problems in any of these lines, perform a printhead
alignment.
Force drop detection
If the Nozzle Print Test plot has persistent white-point banding in only one color that cannot be fixed with a
printhead recovery, you can use this option to resolve the problem by resetting the nozzle health database
so that all nozzles are assumed to be correct. Once the nozzle health database has been reset, drop
detection is forced.
The normal cause of this white-point banding in a single color is the incorrect detection of failed nozzles by
the drop detector.
Perform the test as follows:
1. Go to the Service utilities menu and select Diagnostic Print.
2. Select Advanced Diagnostic Print.
3. Select Force Drop Detection.
4. Make sure that the ink system is ready, and the covers and doors are closed, then press OK.
5. The printer performs drop detection.
6. When the process has ended, press OK to return to the menu.
Print Reference Plot
The reference plot is a sRGB HPGL2 image that can help to check some Prit Quality attributes:
●
Banding
●
Grain
●
Ink quantity
●
Line quality
188 Chapter 4 Diagnostics, Service Utilities and Calibrations ENWW
To Next Page
Loading...
