Canon MultiPASSTM C50 User Manual page 204

Problem
The print quality is poor
Also see "Printing Problems" on page 8-19.
The MultiPASS C50 cannot
receive faxes using ECM
(ECM RX does not appear in
the LCD display when
receiving)
Nothing prints
8-16 Troubleshooting
Possible cause
You may not be using the
correct paper.
The sending fax machine may
not be operating properly.
The sending fax machine may
not support ECM.
ECM reception may not be
selected.
The orange tape may not
have been removed from the
BJ cartridge when it was
installed.
The BJ cartridge may not
have been installed properly.
The print head unit may need
cleaning.
The BJ cartridge may need to
be replaced.
Solution
Make sure the paper in the sheet
feeder meets the specifications
given in Appendix A.
Make a copy with your
MultiPASS C50. If the copy looks
OK, then your MultiPASS C50 is
operating properly. Contact the
sender and have them check their
fax machine.
If the sending fax does not
support ECM, then the
MultiPASS C50 receives the fax
in normal mode without error
checking.
Make sure the ECM option in
the Receive Fax tab is selected.
See the MultiPASS Desktop
Manager User's Guide.
Be sure to remove the tape from
the BJ cartridge when you install
it. See page 2-33.
Make sure the cartridge is
installed correctly. See page 2-31.
Clean the print head. See page
9-9.
See page 9-10.
Chapter 8