AMT Datasouth 400 - Manual (Page 65)

User's Guide 65
User Detected Errors
The following issues may be detected by the user but are not reported by the printer.
Vertical streaks in the print
This could indicate a dirty or faulty print head. Clean the print head first. Verify the media does not have excessive
paper fibers or dust. Verify there are no nicks or burrs anywhere in the paper path such as a scratched rail. If no other
source of streaks can be found replace the print head.
Vertical gaps in the print
This could indicate a dirty or faulty print head. First clean the print head. Verify the ribbon is not wrinkling. Verify
darkness feature is set high enough. Manually add force to the print head bracket in the area of the streaks. If the
streaks go away the print head itself is not the cause.
Poor print out quality
# Verify type of media and ribbon (if used) are compatible.
# Verify ribbon is not being used with direct thermal media.
# Lower print speed and adjust print darkness.
# Verify print head is clean.
# Verify platen roller is clean.
# Verify media and ribbon are both loaded exactly as described in media and ribbon loading sections.
# Replace print head if print out is streaked or missing and all of above does not resolve.