HP Stitch S1000 User Guide - Page 244

Mid-tones (section 1) N/A Nozzle health (section 2) Drop detector > 300 blocked > 300 blocked Possible cause Printhead failure < 300 blocked (at least one color) > 300 blocked (at least one color) Drop detection failure Action Hard-clean the printhead, twice if necessary. Replace the printhead. Call your service representative. Hard clean To perform a hard cleaning routine, go to the Internal Print Server, click Printer > Printhead cleaning, select the printhead(s) to clean and click the Hard clean button. Sometimes, when the printhead is quite damaged, running the hard-clean routine twice helps to recover its performance. New printhead is rejected If the printer will not accept a new printhead, try the following steps in sequence: 1. Ensure that the printhead was correctly stored in its orange cap. 2. Ensure that the electrical contacts are clean. 3. Run the primer system diagnostic. 4. Assume that the printhead is faulty, and try another one. 5. If no printhead works in that slot, call your service representative. Automatic printhead alignment fails Automatic printhead alignment may fail occasionally. You may see the alert Automatic Printhead Alignment cancelled because of scanning errors, which can be caused by different problems: ● The scans of the printed blocks cannot be performed reliably on the current substrate. The scans of the patterns maybe unreliable or impossible on substrates that are non-white, transparent, or translucent, or have a very rough or punched surface. For these substrates, automatic printhead alignment using the builtin line sensor may not be possible. ● Some patterns of the automatic printhead alignment plot are defective due to: 238 Chapter 14 Troubleshoot ink cartridge and printhead issues ENWW