Printronix SL5000r User Manual page 86

Chapter 2
The printed bar codes are
causing error conditions.
86
Table 7. Troubleshooting the Validator
Symptom
There are a number of factors which could be
causing validation errors:





Solution
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 33.
Make sure the entire bar code passes com-
pletely 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 41.
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, in-
crease the bar code height.