HP Designjet 4500 Printer series - Manual (Page 199)

2. Open the carriage interconnect wiper.
3. Load the sponge into the carriage interconnect wiper by positioning the sponge on the face of
the carriage interconnect wiper with the shorter tab in the locating slot.
4. Close the carriage interconnect wiper, trapping the sponge in place.
5. Open the printhead carriage latch and extract the printhead that has the problem, as indicated
on the front panel. See Remove a printhead.
ENWW Clean a printhead's electrical connections 185
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