HP Designjet 4000 Printer series - Manual (Page 118)

6. Insert the carriage interconnect wiper into the printhead slot at the back. Wipe the
electrical contacts by inserting the tool between the electrical connections at the
back of the slot and the steel spring with the sponge facing away from you and
towards the electrical contacts. Try to avoid picking up any ink deposit which may
have accumulated on the bottom surface of the slot.
Caution If the carriage is left in the central part of the printer for more
than seven minutes. it will try to move back to its normal position in the
right-hand end.
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.
Chapter 6
116
How do
I
handle
the
ink
system?