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

When you have done this, enter the correction values into the front panel or the Embedded Web Server.
To enter the correction values in the front panel, select the
icon, then select Image quality maintenance
> Align printheads > Manual PH alignment > Enter correction values. Enter each value into the window
labelled with the same letter as the corresponding pattern.
To enter the correction values in the Embedded Web Server, select the Setup tab, then select Align
printheads > Manual PH alignment, and enter each value into the window labelled with the same letter as
the corresponding pattern.
Clean the electrical connections on a printhead
It is possible that the printer will not recognize a printhead after it has been installed. This can happen when
ink builds up on the electrical connections between the printhead and the printhead carriage. Under these
circumstances, HP recommends that you clean the electrical connections on the printhead. However, routine
cleaning of the connections when no problems are apparent is not recommended.
A carriage interconnect wiper is included with your printer in the User Maintenance Kit.
Use this to clean the electrical interconnects on both the printhead carriage and the printhead if the Reseat
or Replace message persists next to the printhead on the front-panel display.
1. Remove a new pre-moistened replacement sponge from its pouch.
A supply of sponges is included in the box with the wiper. If all sponges have been used, more can be
obtained by calling your service representative.
12 Chapter 4 Hardware maintenance ENWW