Canon MultiPASSTM C50 manual Colour Printing and Copying Problems, 26Troubleshooting Chapter

Colour Printing and Copying Problems

Use the following to correct problems you may have while using the MultiPASS C50 to print in colour.

Problem	Possible cause	Solution
Colours are missing, and the	The MultiPASS C50 Printer	Make sure you selected the
output contains only black ink	Driver may not be selected.	MultiPASS C50 Printer Driver or
		other compatible colour printer
		driver. See the MultiPASS
		Desktop Manager User's Guide.

The printer driver may not be selecting colour.

Make sure the PC is set to use Colour On Screen ± Matched Colour. See the MultiPASS Desktop Manager User's Guide.

The colour BJ cartridge may not be working properly.

Print the NOZZLE CHECK test pattern to make sure the Colour BJ cartridge and ink tanks are ®ring correctly. See page 9-8.

An ink tank may be empty.

Replace empty ink tanks as needed. See page 9-17.

The print head unit may need cleaning.

The application you are printing from may not support colour printing.

Clean the print head. See page 9-9.

Check your application's documentation.

Colours are broken or uneven You may be using the wrong print mode.

If you are printing a thin line with a non-primary colour, your software may be telling the unit to place a colour every other dot, with white in between.

If you are printing dense graphics on plain paper, set the Media Type to Coated Paper on your PC. See the MultiPASS Desktop Manager User's Guide.

Choose cyan, yellow, magenta, or black instead.

8-26Troubleshooting Chapter 8