Intermec CN4 User Manual page 105

Problems Reading Bar Codes (continued)
Problem
When you release a Scan button or
handle trigger, the Good Read light
does not turn off.
The scanner will not read the bar code
label.
The scanner does not read the bar code
labels quickly, or the scanning beam
seems to be faint or obscured.
You scan a valid bar code label to enter
data for your application. The data
decoded by the scan module does not
match the data encoded in the bar code
label.
CN4 Mobile Computer User's Manual
Chapter 4 — Troubleshooting and Maintaining the CN4
Solution
The Good Read light will remain on if you configure the
computer to use continuous/edge triggering. If you
configure the computer for level triggering and the
Good Read light remains on, there may be a problem.
Press one of the Scan buttons or pull the trigger again
without scanning a bar code label. If the light is still on,
contact your local Intermec representative.
•
Aim the scanner beam to cross entire bar code label in
one pass. Vary the scanning angle.
•
Check the quality of the bar code label, Scan a bar
code label that you know will scan. Compare the two
bar code labels to see if the bar code quality is too low.
You may need to replace the label that you cannot
scan.
•
Make sure the bar code symbology is enabled and
configured correctly. Use Intermec Settings to check
the symbologies. Expand Data Collection >
Symbologies beneath devices listed (scanner, virtual
wedge) to check and enable symbologies, then scan
the bar code label again.
•
Make sure the computer application is expecting
input from a bar code. You may need to type this
information instead.
The scanner window may be dirty. Clean the window
with a solution of ammonia and water. Wipe dry. Do not
allow abrasive material to touch the window.
The computer may have decoded the bar code label in a
symbology other than the label's actual symbology. Try
scanning the bar code label again. Make sure you scan
the entire label.
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