C05. Printheads Alignment - HP DesignJet 2500CP Service Manual

C05. Printheads Alignment

The purpose of this calibration is to test and if necessary correct the
misalignment between the printheads. This Calibration is necessary to avoid
color misalignments and print quality defects like banding.
Perform the Printheads Alignment calibration whenever:
Carriage is disassembled or replaced.
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Banding is detected in prints.
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Misalignment between colors is detected.
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Refill Assembly is disassembled or replaced.
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Electronics Module is replaced.
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Load media before performing this test.
Perform the Printheads Alignment Calibration as follows:
MAKE SURE THAT THE WINDOW IS CLOSED BEFORE YOU
PERFORM THIS CALIBRATION.
1 In the Calibrations submenu, scroll to C5 Printheads Align." and press
Enter.
Calibrations
C5 Printheads Align.
2 If media is not loaded the calibration will stop and the message Load
Media" will be displayed on the front panel. Load media in order to
continue the calibration.
3 While the Calibration is being performed, the message Aligning
Printheads" will be displayed on the front panel.
4 If the calibration is performed correctly, the C0500 Done" message is
displayed on the front panel.
5 If the calibration fails, the C0501 Fail" message is displayed on the
front panel.
If the calibrations fails, to resolve the problem, try one of the following:
1 If the calibration pattern is bad:
Try recovering the printheads using the front panel menu and try
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the calibration again.
If the calibration pattern is bad again, then replace the complete
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Ink Delivery System of the color that is bad.
2 Perform the Electronics Test ' page 4 6.
3 Perform the Line Sensor Test ' page 4 9.
5-12 HP DesignJet CP Series Printers Service Calibrations