Canon ImageCLASS MF5750 User Manual download pdf (Page 51)

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Troubleshooting

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.

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Canon ImageCLASS MF5750 User Manual Page 51