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LS4208 Product Reference Guide3-4
Decoding Bar Codes
Scanner emits the laser, but does not decode the bar
code.
Scanner is not programmed for the correct bar code
type.
Program the scanner to read that type of bar code.
See Chapter 12, Symbologies.
Bar code symbol is unreadable. Scan test symbols of the same bar code type to
determine if the bar code is defaced.
Distance between scanner and bar code is
incorrect.
Move the scanner closer to or further from the bar
code. See Decode Zone on page 2-10.
The scan line is not crossing every bar and space of
the symbol.
Move the symbol until the scan line is within the
acceptable aiming pattern. See Figure 2-3 on page 2-
6.
Scanner decodes bar code, but does not transmit the
data to the host.
Scanner is not programmed for the correct host
type.
Scan the appropriate host type programming bar
code. See the chapter corresponding to the host
type.
Interface cable is loose. Check for loose cable connection and re-connect
cable.
Scanner emits five long low beep after a bar code is
decoded.
Conversion or format error was detected.
The scanner’s conversion parameters are not
properly configured.
Ensure the scanner’s conversion parameters are
properly configured.
Conversion or format error was detected.
An ADF rule was set up with characters that can't
be sent for the host selected.
Change the ADF rule, or change to a host that can
support the ADF rule.
Conversion or format error was detected.
A bar code was scanned with characters that can't
be sent for that host.
Change the bar code, or change to a host that can
support the bar code.
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 is pulled. 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.
Table 3-1. Troubleshooting (Continued)
Problem Possible Causes Possible Solutions