User's Manual

Chapter 4 — Troubleshooting and Maintaining the CN3
CN3 Mobile Computer User’s Manual for Windows Mobile 6.1 93
Problems Reading Bar Codes
Problem Solution
You cannot see a red beam of light from
the imager when you press the Scan
button and aim the imager at a bar
code label.
• You may be too far away from the bar code label. Try
moving closer to the bar code label and scan it again.
• You may be scanning the bar code label “straight on.”
Change the scanning angle and try again.
• The scanner hardware trigger might be disabled in
Intermec Settings. To check the setting go to Start >
Settings > System Tab > Data Collection > Scanner
Settings. Hardware trigger should be checked.
The input device attached to the
computer does not work well or read
bar code labels very quickly.
Set the Scanner Model parameter to the specific attached
input device. Check the enabled bar code symbologies
and enable only the symbologies being used.
When you release a Scan button or
handle trigger, the Good Read LED
does not turn off.
The Good Read LED remains 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 LED stays on, contact
your local Intermec representative.
The scanner will not read the bar code
label.
• Aim the scanner beam to cross the entire bar code
label in one pass. Vary the scanning angle.
• Scan a known good bar code label. Compare the two
bar code labels to see if the quality of the troublesome
bar code is too low. You may need to replace the label
that you cannot scan.
• Open Intermec Settings and make sure the bar code
symbology is enabled and configured correctly.
• Make sure the computer application is expecting
input from a bar code. You may need to type this
information instead.
The scanner does not read the bar code
labels quickly, or the scanning beam
seems to be faint or obscured.
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.
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.
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.