HP 3000dtn - Manual (Page 129)

ENWW
8-29
To clear jams inside the top cover
1 Open the top cover to locate the jam. When you lift the top cover,
the carriage should return to its position on the left side of the
printer. If the carriage does not return to this position, move the
carriage to the right side.
2 Free any wrinkled media and pull the sheet slowly toward you
through the top of the printer.
CAUTION To prevent damage to printer parts, use care when removing
jammed media.
3 After you clear the jam, close the top cover.
4 Press (help button) to clear the message in the LCD control
panel, and then press (select button) to continue printing.