HP Designjet Z6100 Printer series - Manual (Page 183)

Scan errors during alignment
If the alignment process fails, a Scanning problems message appears on the front panel. This indicates
that the alignment was not completed successfully. Therefore, the printheads are not aligned and the
alignment should be repeated before printing. The problem might be because of one of the following
scenarios:
● The type of paper used in the printhead alignment process was not acceptable. Repeat the alignment
process using one of the recommended paper types.
● The printheads are not clean. Clean the printheads. See Clean the printheads on page 168 .
● 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.
Align the printheads 171
Troubleshoot ink