Canon MF5770 - Manual (Page 51)

7-10
T
roub
leshooting
7
Q Is any toner left in the cartridge?
A Replace the cartridge with a new one. For more information, see Chapter 8, "Maintenance," in the
User’s Guide.
A Select <KEEP PRINTING> in <TONER SUPPLY LOW> in <RX SETTINGS> in <FAX SETTINGS> of
the Menu. With this setting, the machine will not store documents in the memory even if the toner
has run out. (See <7. TONER SUPPLY LOW> of "Menu Descriptions," on p. 8-6.)
Q Is the correct paper loaded in the cassette?
A Make sure paper is loaded in the cassette. For more information, see Chapter 2, "Paper Handling,"
in the User’s Guide.
A Load the correct paper size or change <PAPER SIZE> in <PAPER SETTINGS> of the Menu. For
more information, see the following:
•
Chapter 2, "Paper Handling," in the User’s Guide
•
Chapter 5, "Copying," in the User’s Guide
Faxed images are blotched or uneven.
Q Are the telephone lines in proper condition? Or do you have a good connection?
A ECM (Error Correction Mode) for sending/receiving should eliminate such problems. However, if the
telephone lines are in poor condition, you may have to try again. Then call the sender to resend the
document.
Q Is the sending fax machine functioning properly?
A The sending fax machine usually determines the fax's quality. Call the sender and have them make
sure the scanning glass of their fax machine is clean.
Cannot receive a fax using ECM (Error Correction Mode).
Q Does the sending fax machine support ECM?
A If the sending fax machine does not support ECM, the document is received in the normal mode
without error checking.