User's Manual

Chapter 4 — Troubleshooting and Maintaining the CN50
56 CN50 Mobile Computer User’s Manual
Problems While Scanning Bar Codes
Problem Possible Solution
You press the Scan
button, but you
cannot see a red
beam of light.
• 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.
• Move within two feet of a wall to test the effective
scan of the scanner. For help scanning bar codes,
see “Scanning Bar Codes” on page 15.
The input device
attached to the
CN50 does not work
well or read bar code
labels very quickly.
Set the Scanner Model command to the specific
attached input device. Check enabled bar code
symbologies and enable only the symbologies being
used.
When you release
Scan button, the
Good Read LED
does not turn off.
If the CN50 is configured to use continuous/edge
triggering, the Good Read LED stays on.
If the CN50 is configured to use level triggering, there
may be a problem. Press the Scan button or pull the
trigger again without scanning a bar code label. If the
LED is still on, contact your local Intermec
representative.
The scanner does not
read the bar code
label.
• Aim the scanning beam so that it crosses the entire
bar code label in one pass. Try changing the scan
angle.
• Check the quality of the bar code label, Scan a bar
code label that you know scans well. 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. For
help, see the Data Collection Resource Kit which is
part of IDL. You can download the resource kit
from www.intermec.com/idl.
• Make sure the application is accepting input by
scanning a bar code. You may need to type this
information instead.