HP Designjet T1300 ePrinter - Manual (Page 196)

3. If the loaded paper is satisfactory, the printer runs the realignment and prints a realignment
pattern. Ensure the window is closed, as a strong light source near the printer during printhead
realignment can affect alignment.
4. The process takes about five minutes. Wait until the front-panel display shows the process
complete before using the printer.
Scanning errors during alignment
If the alignment process fails, a Scanning problems message appears on the front panel. This means
that the alignment has not completed successfully. Therefore the printer is not aligned and the alignment
should be repeated before printing with good image quality. The problem may be due to:
● The paper used was not valid, repeat the alignment with valid paper
● Printhead health problems, clean printheads, see Clean the printheads on page 184
● The alignment was done with the window open, repeat the alignment with the window closed
If the problem persists after using valid paper, cleaning the printheads and keeping the window closed,
there may be a failure in the scanning system needing repair; or the printheads, although clean, may
not work and need to be replaced.
Printhead status messages
These are the possible printhead status messages:
● OK: the printhead is working normally, with no known problems
● Missing: there is no printhead present, or it is not correctly installed in the printer.
● Test printhead separately: you are recommended to test the printheads individually to find
the failing printhead. Remove all the printheads and insert them alone one by one, closing the
latch and the carriage cover after every insertion. The front-panel display indicates the failing one
showing the reseat or replace message.
● Reseat: you are recommended to remove the printhead and then reinsert it. If that fails, clean the
electrical connections, see The front-panel display recommends reseating or replacing a printhead
on page 183 . If that fails, replace the printhead with a new printhead, see Remove a printhead
on page 129 and Insert a printhead on page 132 .
● Replace: the printhead is failing. Replace the printhead with a working printhead, see Remove a
printhead on page 129 and Insert a printhead on page 132 .
188 Chapter 18 Troubleshooting ink cartridge and printhead issues ENWW