Why can't I print Red colors

SOURCE: some colors dont print

1. Manually adjust color from the driver (Mac OS 9) 2. Manually adjust color from the driver (Mac OS X) 3. Manually adjust color from the driver (Windows) 4. Confirm that the recommended ink tanks are installed properly (iP1500 / iP2000) 5. Disable Monochrome Effects in the printer driver (Windows) 6. Perform print head alignment (Mac OS 9) iP1500 / iP2000 7. Perform print head alignment (Mac OS X) iP1500 / iP2000 8. Perform print head alignment (Windows) iP1500 / iP2000 9. Perform print head cleaning (Mac OS 9) iP1500 / iP2000 10. Perform print head cleaning (Mac OS X) iP1500 / iP2000

http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=257&modelid=10236

SOURCE: Colors print different

Is it because the ink has run out of the cartridge, replace all the cart

SOURCE: won't print red

Red is a combination of Magenta and Yellow. Print a nozzle check and observe for Magenta, Yellow and cyan. If the three colours are printed, no problem with the cartridge. Then it must be the problem of seeing colours in your monitor. .

SOURCE: Canon PIXMA iP4000 Will not print red Deep clean won t work Other colors OK

remove print head assembly. clean off.
print head not on cartridge. 

SOURCE: Cyan, magenta and yellow not print after replace the new print head

I am going back to Epson