HP Designjet L25500 Printer Series - Maintenance and troubleshooting guide (second edition)

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The type of substrate used in the printhead alignment process was not acceptable. Repeat the
alignment process using one of the recommended substrate types.
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The printheads are not clean. Clean the printheads. See
Clean the printheads on page 37.
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The printer window was open during the printhead alignment process. Repeat the alignment process
with the printer window closed.
If the problem persists after following the recommended remedies, try replacing all of the printheads. If the
problem persists after replacing the printheads, a failure in the scanning system may exist.
40 Chapter 7 Troubleshoot ink-system issues ENWW