User Manual

Maintenance and Troubleshooting 4-11
Troubleshooting
If problems still occur, contact the distributor or call the local Symbol Support Center. See page x for the
telephone numbers.
Table 4-3. Troubleshooting
Problem Possible Causes Possible Solutions
XR400 error LED lights after the reader has been
in operation.
The CPU cannot communicate with the
DSP and cannot reload the DSP
firmware to it.
Refer to the system log for error messages.
XR400 error LED stays lit on powerup. An error occurred during the powerup
sequence.
If the web interrface is available, refer to the system log for the cause
of the error, otherwise refer to the debug messages from the serial
console.
Cannot connect to the reader. Username and password is unknown. The default username is admin and the default password is
change. To change the username and password, see Connecting the
XR400 for Communication on page 2-6.
XR400 is not reading tags. The tag is out of its read range. Move the tag into the read range. See Read Test on page 2-5.
Cannot access the Administrator Console. The reader’s IP address is unknown. See Connecting the XR400 for Communication on page 2-6 to view
the reader’s IP address.
Cannot log in to the terminal-based
Administrator Console.
The web-based Administrator Console
is in use for that reader.
Log out of the web-based console and restart the terminal software
to re-attempt log in.
Certain real-time applications are no longer
functional.
You changed the node address, IP
address, or other reader configuration
parameter(s) using the Administrator
Console, and the application expects
the previous configuration.
Update the settings within the application. Refer to the application’s
manual.
Polling is enabled.-** Some real-time applications require disabling polling. Refer to the
application’s manual, and if required, disable polling using the Scan
Control feature of the Administrator Console. See Scan Control on
page 3-5.
The user closed the browser without
logging out of the Administrator
Console, so other applications cannot
connect to the reader.
Log out of the Administrator Console.