HP Designjet 4500 Printer series - Manual (Page 307)

3. There are small holes in the platen beside some of the rollers.
Using the bottle of oil supplied with the Maintenance Kit, insert the pointed end of the bottle into
each hole in turn, and put three drops of oil into each hole.
4. Repeat the process until all of the holes in the platen have had three drops of oil placed in them.
5. Be careful not to spill oil onto the platen.
ENWW The platen rollers squeak 293
The problem is... (other
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