Print quality troubleshooting
2Reprint the Nozzle Print test to check that the defective nozzles have been corrected.
3If the problem continues, replace the defective Printhead.
Force Drop Detection
If the Nozzle Print Test plot has persistent white point banding in only one color that cannot be fixed with a printhead recovery, you can use this option to resolve the problem by resetting the nozzle health data base so that all nozzles are assumed to be correct.
Once the nozzle health data base has been reset drop detection is forced.
The normal cause of this white point banding in a single color is the incorrect detection of failed nozzles by the drop detector.
Troubleshooting Print Quality Problems
Print Quality General Advice
1To achieve the best performance from the printer, only genuine HP accessories and supplies should be used.
2Make sure that the paper type selected in the Front Panel is the same as the paper type loaded into the Printer.
3Make sure to use the most appropriate print quality settings for your purposes. A lower print quality is likely to be seen if the print quality slider has been moved to the Speed end of the scale, or the custom quality level set to Fast.
4Check that the environmental conditions (temperature, humidity) are within the temperature/humidity range as specified for the Printer (refer to the User’s Guide for more information).
5Check that the ink cartridges and printheads have not exceeded their expiration dates.
HP Designjet T Series — Service Manual |