User's Manual Part 2

Chapter 4 — Maintaining the Computer
96 PRELIMINARY - CN3 Mobile Computer User’s Manual
The input device attached to the CN3 Computer 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.
The scanner will not read the bar code label. 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.
Ensure the bar code symbology is enabled. Use the Inter-
mec Settings applet 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.
Ensure the CN3 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.
CN3 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.
You receive a message reading “Scanner Communication
Failure” when trying to connect a 1551E or 1553
decoded scanner.
Make sure you are using the correct cable.
Make sure the scanner cable is attached correctly. When
you attach the scanner to the port, it should emit a single
power up beep.
Try enabling the port state using the Intermec Settings
applet.
Try upgrading the scanner firmware.
Select ASCII as the scanner model.
Your 1551E or 1553 scanner was working fine, but after
changing the port setting you cannot change the configu-
ration.
1551E or 1553 scanner port must use the correct RS-232
settings to allow configuration in the Intermec Settings
applet. Disable, then enable the scanner port state.
Configuration settings in the Intermec Settings applet do
not match the settings on your 1551E or 1553 Scanner.
Disable, then enable the scanner port state to synchronize
the CN3 Computer settings with the scanner.
Problems While Scanning Bar Codes (continued)
Problem Solution