This is a common problem due to the line sensor getting contaminated with ink over-spray from some types of media used through the printer.
When we carry out this service repair, we have to take the carriage out of the printer, doing this we check the carriage belt and replace at the same time to save customer the cost of another service call in the near future providing preventitive maintenance and peace of mind that the printer will not breakdown when most needed!
This takes an average time of 2 hours to service an HP 5000 – 5500 Designjet.
This call required to replace the line sensor, carriage belt and tube system as it was letting in air into the sealed tubes which will cause the printheads to fail after about 40ml of ink. Replaced 2 of the printheads which had air in as well. Calibrated line sensor, printheads and colour calibration.
Time on site was 2.5 hours.