Symbol Technologies VRC 6940 - Manual (Page 48)

6-3
Troubleshooting
Error Messages
The terminals use ERR3000.SYS, a factory-installed program that displays error messages.
Messages blink in place on the display screen for three seconds. The terminal beeps while the
message is showing. Then the system returns to its previous status.
Table 6-2 lists some
sample messages. Application programs can change or disable messages. For more
information, refer to the Series 3000 Application Programmer’s Guide (p/n 70-16308-XX).
Table 6-2. Error Messages
Scanner laser works but does
not read bar codes The bar code may not be legible. Try scanning another label of the
same product, or type in the data manually.
The scanner window may be dirty or severely scratched.
If it is dirty, clean it with a soft, dry cloth moistened with an ammonia-
based glass cleaner. If the scanner window is badly scratched, replace
the scanner.
The scanner may not be programmed or may be programmed
incorrectly. Consult the reference guide that came with the scanner for
configuration information.
Application does not
respond This can happen if the terminal cannot connect to the Access Point
(AP). If the terminal cannot connect to the AP, applications may
continue to function until they need to transmit to the AP, then they
simply stop responding.
The terminal may be out of range of the AP. Move the terminal to a
location closer to an AP and then try to restart it. See
page 6-4 for
more information.
The host computer may be down. Check the host computer.
There may be a problem with the application software. Do a Memory
Transfer to transmit data from the VRC 6940 terminal to a Host PC,
and have an application programmer examine the data. See
page 6-8 .
Message Explanation
Double Key Error You have pressed two keys at the same time. This message does not appear for
the warm, cold, and Command Mode boot sequences described on page 6-5 .
Too Many Keys Three or more keys have been pressed at the same time.
Power Fault The last power off was caused by a power failure. This occurs, for example, if
power suddenly fails or is disconnected. For more information, see
Table 6-1 .
Table 6-1. Troubleshooting VRC 6940 Terminals
Problem Action