HP Designjet 4500 Printer series - Manual (Page 217)

Lubricate the printhead carriage
The printhead carriage occasionally (about once a year) needs lubrication to slide easily along the
slider rod.
1.
To gain access to the carriage, go to the front panel and select the icon, then Printhead
management > Replace printheads. The carriage will slide into the middle section of the
printer.
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.
2. Take the bottle of oil from the Maintenance Kit that is supplied with your printer. A replacement
kit can be ordered if necessary.
3. Open the window and apply a few drops of oil from the Maintenance Kit to the pads on either
side of the carriage.
4. Apply a few drops of oil directly to the slider rod on either side of the carriage.
5. Close the window.
Replace the manual cutter blades
It is unlikely that the cutter blades will need replacing unless you use them to cut a lot of heavyweight
paper. However, each cutter contains a spare blade. If you find that a cutter no longer cuts
effectively, you can replace the blade as follows.
1. Start with the cutter in its normal position on the right-hand side of the drawer.
2. Remove the screw from underneath the cutter, holding on to the bottom cover to stop it falling.
3. Remove the bottom cover by rotating it downwards and pulling outwards.
ENWW Lubricate the printhead carriage 203
How do I... (printer maintenance topics)