Canon printer imageCLASS MF5750 User Manual

LCD Messages9-10
Troubleshooting
9
CHECK PRINTER
Cause A problem has occurred in the machine.
Remedy Reset the machine by opening the front cover and then closing it. If the 
message persists, unplug the machine from the power supply and contact 
Canon Authorized Service Facilities or the Canon Customer Care Center.
CHECK PRINTER COVER
Cause The front cover is not closed completely.
Remedy Check the front cover, and make sure that it is completely closed. 
DOCUMENT TOO LONG
Cause The document is longer...

LCD Messages9-11
Troubleshooting
9
PRINTER DATA ERROR
Cause When you canceled a job being processed, the next job on the spooled job list 
may have been also deleted.
Remedy Check if the job that immediately follows the job being processed has been 
deleted on the spooled job list. Disconnect the USB cable and connect it again, 
or unplug the machine and plug it in again to clear the error message.
REC. PAPER JAM
Cause There is a paper jam.
Remedy Clear the paper jam (See “Clearing Jams,” on p. 9-1) and...

Paper Feeding Problems9-12
Troubleshooting
9
Paper Feeding Problems
Paper does not feed correctly.
Q Does the cassette or multi-purpose feeder contain an appropriate quantity of 
sheets?
A Make sure the paper stack in the cassette or multi-purpose feeder does not 
exceed the capacity of the cassette or multi-purpose feeder. (See “Loading 
Paper,” on p. 2-3.)
Q Is paper loaded correctly?
A Make sure the paper stack in the cassette or multi-purpose feeder is loaded 
properly, and that the paper guides are...

Paper Feeding Problems9-13
Troubleshooting
9
Q Does the cassette or multi-purpose feeder contain an appropriate quantity of 
sheets?
A Make sure the paper stack in the cassette or multi-purpose feeder does not 
exceed the capacity of the cassette or multi-purpose feeder. (See “Loading 
Paper,” on p. 2-3.)
A Do not force the paper stack into the cassette or multi-purpose feeder.
A Load paper one by one in the multi-purpose feeder.
Q Is only one type of paper loaded in the cassette or multi-purpose...

Paper Feeding Problems9-14
Troubleshooting
9
Paper stacked roughly.
Q Is the proper paper loaded?
A Check if the proper paper is loaded in the cassette or multi-purpose feeder. 
(See Chapter 2, “Paper Handling.”)
A Check if the appropriate paper type is selected in  in  of the Menu. (See “Specifying the Paper Type,” on p. 2-11.)
Repeated paper jams occur.
Q Is the proper paper loaded?
A Check that the size, thickness and type of the paper you are using. (See “Print 
Media Requirements,” on p. 2-1.)
Q Is...

Copying Problems9-15
Troubleshooting
9
Copying Problems
The machine will not make a copy.
Q Is the cartridge installed correctly?
A Make sure the cartridge is installed correctly. (See the Set-Up Instructions (for 
MF5730/MF5750 users) or Set-Up Instructions for the Machine (for MF5770 
users).)
Q Is the sealing tape removed from the cartridge?
A Remove the sealing tape from the cartridge. (See the Set-Up Instructions (for 
MF5730/MF5750 users) or Set-Up Instructions for the Machine (for MF5770...

Print Quality Problems9-16
Troubleshooting
9
Print Quality Problems
The print quality is not what you expect; print is not clear, has missing dots or white streaks.
Q Are the size, thickness and type of the paper you are using within the 
specifications of the machine?
A Check that the paper you are using is supported by the specifications of the 
machine. (See “Print Media Requirements,” on p. 2-1.)
Q Is the cartridge installed correctly?
A Make sure the cartridge is installed correctly. (See the Set-Up...

Print Quality Problems9-17
Troubleshooting
9
Q Is the machine installed in a stable location?
A Install the machine in a proper location. (See “Installation,” on p. xiv.)
Copies are too dark or too light.
Q Is the exposure adjusted correctly?
A Adjust the exposure correctly using [Exposure]. (See “Adjusting the Exposure 
(Density),” on p. 5-6.)
Q Is the machine in the toner saver mode?
A Set  to  in  of the 
Menu. (See  of “Menu Descriptions.” on p. 10-4.)
The printouts are partly missing or shaded when...

Printing Problems9-18
Troubleshooting
9
Printing Problems
The Alarm indicator comes on.
Q Does the machine feed paper correctly, or is there paper in the cassette or 
multi-purpose feeder?
A Clear the paper jam, or load paper in the cassette or multi-purpose feeder. (For 
instructions on clearing paper jam, see “Clearing Jams,” on p. 9-1. For 
instructions on loading paper, see “Loading Paper,” on p. 2-3.)
A If the machine has no paper jam, or paper is loaded in the cassette or 
multi-purpose feeder,...

Scanning Problems9-19
Troubleshooting
9
Scanning Problems
The machine will not scan a document.
Q Did you connect the power cord to the machine just now?
A Wait for a while. After connecting the power cord, the machine cannot scan 
documents immediately. 
Q Is the document loaded correctly?
A Remove the document, stack it if necessary, and load it in the ADF correctly. 
(See “Loading Documents in the ADF,” on p. 3-4.)
A Make sure the ADF is closed.
Q Is the USB cable connected securely?
A Check that the...