3 - 4 Symbol LS1203 Product Reference Guide
Host Displays
Host displays scanned data 
incorrectly.
Scanner is not programmed to work 
with the host.
Ensure the proper host is selected.
Scan the appropriate host type 
programming bar code.
For RS-232, set the scanner's 
communication parameters to match 
the host's settings.
For a USB HID keyboard or Keyboard 
Wedge configuration, program the 
system for the correct keyboard type 
and language, and turn off the CAPS 
LOCK key.
Program the proper editing options 
(e.g., ADF, UPC-E to UPC-A 
Conversion).
Check the scanner’s host type 
parameters or editing options.
Trigger
Nothing happens when the 
trigger button is pressed.
No power to the scanner. Check the system power. If the 
configuration requires a power supply, 
re-connect the power supply.
Interface/power cables are loose. Check for loose cable connections 
and re-connect cables.
Incorrect host interface cable is 
used. 
Verify that the correct host interface 
cable is used. If not, connect the 
correct host interface cable. 
Table 3-1    
Troubleshooting (Continued)
Problem Possible Causes Possible Solutions
NOTE If after performing these checks the symbol still does not scan, contact the distributor or Motorola 
Enterprise Mobility Support. See page xiii for contact information.