51.20 error. This
would be a black scanner error,
51,21 cyan scanner error, 51.22
Magenta scanner error.
51,23 yellow scanner error.
Turn off the power . wait at least 30 sec . the turn on the power. If a
surge protector is being used , plug the printer directly
Into the wall. Turn on the printer. If the problem persist, laser scanner can not
be replaced, replaced the engine..
55.1 error This is
a DC controller error. Turn the power off for 30 sec, and then back on. If a
surge protector is being used , remove it. Plug the unit directly into the wall
Socket. Turn on the unit.
If the problem persist, check the engine(DDC) firmware version. Up date it
if needed. Replaced the DC control , if a firmware upgrade does not resolve the
Issue.
57 error This is
a fan error. Turn off the power for 30 sec. then turn back on . If the
Problem persist. The
fan is not replaceable. Replaced the engine board.