Quick Reference Guide 15
Maintenance
Cleaning the scanner window is the only maintenance required. A dirty or 
scratched window may affect scanning activity.
• Remove any dirt particles with a damp cloth.
• Wipe the window with a tissue moistened with ammonia or water.
Troubleshooting
Problem Possible Causes Possible Solutions
The red LED 
illumination does 
not come on when 
the directions for 
installing the host 
cable are followed.
No power to the 
scanner.
Ensure the host has power, and 
is on. If the scanner uses a 
separate power supply, ensure it 
is connected to a working AC 
outlet.
Power-up sequence is incorrect. 
Refer to the Product Reference 
Guide for more information.
Interface cable is not 
properly connected.
Check for loose cable 
connections.