HP Designjet 5100 Printer series - Manual (Page 103)

7-7
Troubleshooting the ink supply
HP Designjet 5100 printer Customer Reference Guide
7 Rub the sponge against the contacts with a light force along the entire
depth of the flex connector as allowed by the mechanical stop on the tool.
8 Take special care to clean all contacts thoroughly, including the ones at the
lowest point of the connector.
9 Using the same sponge, clean the electrical contacts on the printhead.
CAUTION Do not touch the surface of the printhead containing the
nozzles as it may damage them.
10 After waiting a few moments to allow both connectors to dry, replace the
printhead into the printhead carriage as instructed by the Printhead
Installation procedure.
NOTE: If the problem still persists, replace the printhead or call your support
Do not clean here