Epson ColorWorks C3400-LT Technical Reference Guide - Page 183

Appendix Printout is Not Satisfactory Symptoms / Problem Condition Verification Method / Countermeasures  Is faint  Contains bands or lines  Is blurry  Sentences and lines are misaligned  Colors look incorrect  Some colors are not printed  Color is uneven  Is obscured  Is rough  Contains white bands  Is overlapped Is the print head nozzle clogged? Verify the status of the print head by performing a nozzle check, and if the nozzle is clogged, perform head cleaning. For details, see below.  Nozzle Check (p.165)  Manual Head Cleaning (p.163) Are you using the recommended ink cartridge (i.e. genuine Epson product)? This product is color adjusted assuming the use of a genuine Epson ink cartridge. If an ink cartridge other than a genuine Epson ink cartridge is used, the print quality may be poor. We recommend the use of a genuine Epson ink cartridge. Are you using an old ink cartridge? When an old ink cartridge is used, the print quality may be poor. The expiration date of an ink cartridge is indicated on the individual package of the ink cartridge. Is the print head gap misaligned? To enable high-speed printing, in this product, ink is discharged both when the print head moves to the right and when it moves to the left. In rare occasions, the print position when the head moves from right to left becomes misaligned from the print position when the head moves from left to right, and as a result vertical lines may become misaligned or the print result may become blurry. Use the gap adjustment function to verify and adjust the gap misalignment. For details, see "Gap Adjustment" on page 166. Is the paper feed amount correctly adjusted? If the paper feed amount is too large, white bands may appear in the printout, and when it is too small, the printout may become overlapped. Use the gap adjustment function to verify and adjust the paper feed amount. For details, see "Gap Adjustment" on page 166. 183