Specifications

Symbol LS4278 Product Reference Guide3-6
If after performing these checks the symbol still does not scan, contact the distributor or contact Motorola
Enterprise Mobility Support. See page xvi for contact information.
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, ensure the scanner’s communication
parameters match the host’s settings.
For a USB HID keyboard or Keyboard Wedge
configuration, ensure the system is programmed for
the correct keyboard type and language, and turn off
the CAPS LOCK key.
Ensure editing options (e.g., ADF, UPC-E to UPC-A
Conversion) are properly programmed.
Check the scanner’s host type parameters or editing
options.
Trigger
Nothing happens when the trigger is pulled. No power to the scanner. Check the system power. If the configuration requires
a power supply, re-connect the power supply.
Check the battery. Ensure that end cap to battery
chamber is secured.
Interface/power cables are loose. Check for loose cable connections and re-connect
cables.
Scanner is disabled. For Synapse or IBM-468x mode, enable the scanner
via the host interface.
The laser does not appear when the trigger is pulled. No power to the scanner. Check the system power. If the configuration requires
a power supply, re-connect the power supply.
Incorrect host interface cable is used. Verify that the correct host interface cable is used. If
not, connect the correct host interface cable.
Interface/power cables are loose. Check for loose cable connections and re-connect
cables.
Table 3-1. Troubleshooting (Continued)
Problem Possible Causes Possible Solutions