Printronix Online Data Validator - Manual (Page 103)

103
Printing 3 mil or 5 mil x-dimension
width bar codes constantly
causes error messages. The validator does not recognize x-dimensions
as small as 3 mil or 5 mil. If you have to print bar
codes this size, disable the validator to prevent
error reports. See “Enabling and Disabling the
Validator” on page 53.
The printed labels look clean, but
the validator is still reporting an
error message. The validator glass may be dirty, distorting the
report results. Power down the printer and clean
the glass using a household glass cleaner and a
dry, lint-free cloth.
The printed bar codes are
causing error conditions. There are a number of factors which could be
causing validation errors:
• The scanning beam is not properly aligned
with the two notches on the tear bar of the
printer. See “Adjust the Scanning Beam” on
page 35.
• Make sure the entire bar code passes
completely under the scanning beam.
• The validator and printer are not properly
communicating. Test the validator operation
without using a host. See “Bar Code
Validation Demo Page” on page 44.
• Bar code width. The validator can recognize
x-dimensions as narrow as 6.6 mil for
300 dpi printers, and 10 mil for 203 dpi
printers. The validator cannot recognize
x-dimensions smaller than 6.6 mil or larger
than 40 mil.
• Bar code size. A minimum height of 1/8 inch
is required for validation. If problems persist,
increase the bar code height.
Table 7. Troubleshooting the Validator
Symptom Solution