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Troubleshooting
Printout is wrong There is a communication
problem between the printer
and your computer.
• Make sure your cable connections are
secure.
• Make sure your USB interface cable is
less than 16.5 feet (5.0 m) long.
• Make sure you are not using a switch
box.
• Check that you have selected the
correct printer driver in Windows.
The wrong printer is selected
in the Printers folder.
Make sure the Canon imageCLASS D300
is selected in the Printers (in Windows
XP, Printers and Faxes) folder.
Printer locks up
system
Your system setup might be a
problem.
• Verify that you have a high-quality
shielded interface cable.
• The problem might be your BIOS.
Verify that your BIOS setup is correct.
(See your computer’s documentation
for details.)
• Verify that your physical memory is
working correctly.
• If you have a Toshiba laptop, change
this line in your CONFIG.SYS file:
c:\winutils\mxtime.exe
to:
REM c:\winutils\mxtime.exe
Computer
indicates a device
time-out.
Your computer is sending
data to the printer but the
printer is not responding.
The printer might be off,
offline, or not connected to
the computer.
• Make sure the printer is not paused.
• Check that the printer's interface cable
is securely connected to both the
printer and computer.
• Make sure paper is properly loaded
from the cassette or multi-purpose
tray.
• Change ERROR TIME OUT setting
in the additional functions. Basic
Guide
• Reset the printer and computer.
• Try the print operation again.
• Try a different cable.
Problem Cause Solution