Canon MULTIPASS C75, User Manual, Page: 174 / 212

13-18
Troubleshooting Chapter 13
Error Correction Mode (ECM) may be disabled.
• Make sure ECM is on. (
1
ECM RX , p. 14-7)
■
Faxes do not print.
The BJ cartridge or tanks may not be installed properly.
• Make sure the BJ cartridge and tanks are installed properly. (
1
pp. 2-12, 12-15)
• Be sure to remove the orange protective tape from the BJ cartridge before you install
it. (
1
p. 2-15)
The BJ cartridge print head may need cleaning.
• Refer to the flow chart (
1
p. 12-9) and clean the BJ cartridge print head if necessary.
(
1
p. 12-11)
The BJ cartridge or tanks may need to be replaced.
• Determine if the problem is with the BJ cartridge or tanks (
1
p. 12-8), and replace if
necessary. (
1
pp. 12-12, 12-15)
■
Fax images print blotched or uneven.
The telephone lines may be in poor condition, or you may have a bad
connection.
• Error Correction Mode (ECM) sending/receiving should eliminate such problems.
However, if the telephone lines are in poor condition, you may have to try again.
The sending fax machine may not be functioning properly.
• The sending fax machine usually determines the fax’s quality. Call the sender and
have them make sure the top cover and scanning glass of their fax machine are
clean.
■
Cannot receive using Error Correction Mode (ECM).
The other party’s fax machine may not support ECM.
• If the other party’s fax machine does not support ECM, then the document is received
in normal mode without error checking.
ECM may be disabled.
• Make sure ECM is on. (
1
ECM RX
, p. 14-7)
■
Errors occur frequently while receiving.
The telephone lines may be in poor condition, or you may have a bad
connection.
• Lower the reception speed. (
1
RX START SPEED , p. 14-9)
The sending fax machine may not be functioning properly.
• Call the sender and have them check that their fax machine is functioning properly.