Chapter 4 — Troubleshooting and Maintaining the CN2G
Problems While Scanning Bar Codes
Problem
You cannot see a red beam of light from the scanner when you press the Scan button or one of the Side Scan buttons and aim the scanner at a bar code label.
When you release the Scan button or Side Scan button, the Good Read light does not turn off.
The scanner will not read the bar code label.
Solution
There are three possible problems:
•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 PSM files may not be correctly installed. For help, see “Upgrading the Persistent Storage Manager Files” on page 62.
You can test the effective range of the scanner. Move within 61 cm (2 ft) of a wall and test the scanner. You need to be within the scanning range to scan bar code labels. For help scanning bar codes, see “Scanning Bar Codes” on page 15.
The Good Read light will remain on if you configure the CN2G to use continuous/edge triggering. If you configure the CN2G for level triggering and the Good Read light remains on, there may be a problem. Press the Scan button or one of the Side Scan buttons again without scanning a bar code label. If the light is still on, contact your local Intermec service representative.
Make sure you aim the scanner beam so it crosses the entire bar code label in one pass.
The angle you are scanning the bar code label may not be working well, or you may be scanning the label “straight on.” Try scanning the bar code label again, but vary the scanning angle.
The bar code label print quality may be poor or unreadable. To check the quality of the bar code label, try scanning 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.
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