Copying Problems - Canon FAX-B840 User Manual

The BJ cartridge print head may need cleaning.
• Clean the BJ cartridge print head if necessary (see p. 57).
The BJ cartridge may need to be replaced.
• Determine if the problem is with the BJ cartridge and replace it if necessary (see p. 58).
The document may be set.
• Make sure the document is not set.
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 quality of the document. Call the sender and have them make sure their fax
machine is clean.
Cannot receive using Error Correction Mode (ECM).
The sending fax machine may not support ECM.
• If the sending 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 (see ECM RX, p. 51).
Errors occur frequently while receiving.
The telephone lines may be in poor condition, or you may have a bad connection.
• Lower the reception speed (see RX START SPEED, p. 52).
The sending fax machine may not be functioning properly.
• Call the sender and have them check that their fax machine is functioning properly.

Copying problems

The fax does not make a copy.
The BJ cartridge may need to be replaced.
• Determine if the problem is with the BJ cartridge and replace if necessary (see p. 58).
The document may not have been loaded correctly into the document tray.
• Remove the document, stack it if necessary, and load it into the document tray correctly (see p. 24).
• Make sure the printer cover is closed.
The BJ cartridge may not be installed properly.
• Make sure the BJ cartridge is installed properly (see p. 11).
The fax may not be operating properly.
• Print the nozzle check pattern (see p. 57).
MEMORY FULL appears on the LCD when making multiple copies.
The fax's memory is full.
• Print or delete any documents stored in memory (see pp. 33, 34) to free up space in the fax's memory, then start again.
• If you have any page fed out without being copied, simply try copying those pages again.
• Change the scanning resolution and try copying again.
The document you are copying may have too many graphics.
• If multiple pages are being copied, separate the pages into smaller stacks. If not, make the desired number of copies one at a time
as needed.
For additional troubleshooting, see Print quality problems, p. 63.
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