Printronix T5000e Series user manual

Chapter 2 Troubleshooting

Table 5. Troubleshooting the Validator

Symptom	Solution
The printed labels look clean, but	The validator glass may be dirty, distorting the
the validator is still reporting an	report results. Power down the printer and clean
error message.	the glass using a household glass cleaner and a
	dry, lint-free cloth.
The printed bar codes are	There are a number of factors which could be
causing error conditions.	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 28.
	• 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 36.
	• 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.
	• Bar code type. The validator only
	recognizes the following linear, picket fence
	bar codes: Codabar, Code 39, Code 93,
	Code 128, Interleaved 2 of 5, and UPC/EAN
	+ add-ons. Stacked, 2D, and vertical
	(ladder) bar codes are not supported.

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