Epson DFX-8500 User Manual - Page 192

Printout 8 Part of the printout is missing, or dots are missing in random positions. Cause What to do Troubleshooting The ribbon cartridge is not installed properly. Re-install the ribbon cartridge as described in Chapter 1. There is too much slack in the ribbon or the ribbon has come loose. Remove any slack from the ribbon or replace the ribbon cartridge with a new one. See "Replacing the Ribbon Cartridge" in Chapter 7. Lines of dots are regularly missing in printouts. Cause What to do The ribbon cartridge is not installed correctly, and the ribbon is twisting or slackening. Stop printing and reinstall it as described in Chapter 1. The print head may be damaged. Stop printing and contact your dealer to have the print head replaced. w Warning: Never attempt to replace the head yourself because other parts of the printer must be checked at the same time. The typestyles or characters set in your application software cannot be printed. Cause What to do Your application software is not correctly configured. Make sure that your application software is correctly configured for your printer. Troubleshooting 8-15