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

7 Troubleshoot ink-system issues
Cannot insert an ink cartridge
1. Check that you have the correct type of cartridge (model number).
2. Check that the colored label on the cartridge is the same color as the label on the slot.
3. Check that the cartridge is correctly oriented, the arrow on the front of the ink cartridge should face
upwards.
CAUTION: Never clean inside the ink cartridge slots.
Cannot insert a printhead
1. Check that you have the correct type of printhead (model number).
2. Check that you have removed the orange protective caps from the printhead.
3. Check that the colored label on the printhead is the same color as the label on the slot.
4. Check that the printhead is correctly oriented (compare with the others).
5. Check that you have closed and latched the printhead cover.
Cannot insert the printhead cleaning cartridge
Check that the printhead cleaning cartridge has the correct model number and is correctly oriented.
Front panel recommends reseating or replacing a printhead
1. Remove the printhead and check that it is free from physical damage and from ink stains on the
electrical connections.
2. If necessary, clean the electrical connections between the printhead and the carriage. See
Clean the
electrical connections on a printhead on page 12.
3. Reinsert the printhead into the carriage and check the front panel message.
4. If the problem persists, insert a new printhead.
Clean the printheads
Periodic printhead cleaning is performed automatically, as long as the printer is kept turned on. However,
you should clean the printheads if you are experiencing poor image quality and cannot resolve the issues by
other methods. This ensures that there is fresh ink in the nozzles and helps to prevents nozzle clogs.
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