HP T1100 HP Designjet T1100 Printer Series - User's Guide - Page 192
Clean the printhead drop detector, Ink system issues
UPC - 883585044979
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Ink system issues You must remove the printhead, see Remove a printhead on page 124, and using a lint free cloth, clean the bottom of the printhead until the residue is removed. Clean the printhead drop detector The printhead drop detector is a sensor that detects which nozzles on the printheads are not printing in order to substitute them for good printing nozzles. If particles, such as fibers, hair, or paper pieces, block the sensor print-quality is affected. When the front panel displays a warning message that the clean process is needed, you are recommended to clean the printhead drop detector. If you do not clean the printhead drop detector immediately, the printer continues working normally, however, the front panel display continues to show the warning. CAUTION: Wear gloves to avoid getting ink on your hands. 1. Turn off the printer at the front panel. 180 Chapter 16 Troubleshooting ink cartridge and printhead issues ENWW