Printronix T5000e Series Module Manual page 66

Chapter 2
Bar Code Failures
Message
Contrast too low
Check media
Poor scanning
Check heat&head
Poor scanning
Check media
66
Table 4. Message List
Explanation
Data validation error: the
contrast between bars and
spaces is not sufficient. This
can be caused by too little
heat in the thermal transfer or
by use of colored media or
ribbons.
Data validation failure:
decodeability. The difference
between wide and narrow
elements is too close for the
validator to reliably discern.
This usually indicates an
improperly set heat/speed/
pressure combination or the
loss of a printhead element.
Data validation failure:
percent decode. The validator
detected gross
inconsistencies within the
height of the bar code. These
types of failures are likely
attributed to large blemishes
within the bar code, caused
by ribbon wrinkle or debris on
media.
Solution
Increase Print Intensity or
reduce Print Speed in the
QUICK SETUP menu or via
host software, change
media, or disable Symbol
Contrast in the VALIDATOR
menu.
1. Adjust Print Intensity
and Print Speed in the
QUICK SETUP menu or
via host software.
2. Adjust the printhead
pressure. (Refer to the
Quick Setup Guide or
User's Manual .)
1. Check for a wrinkled
ribbon or debris on
media. Roll wrinkled
area onto take-up
spindle.
2. Adjust the printhead
pressure blocks. (Refer
to the Quick Setup
Guide or User's
Manual .)