Troubleshooting - Wasp Duraline WLS 8400 ER Series Product Reference Manual

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WLS 8400 Product Reference Guide

Troubleshooting

Problem
Scanner emits short low/short
medium/short high beep sequence.
Nothing happens when scan trigger
is pressed.
Scanner emits short low/short
medium/short high beep sequence
more than once.
Laser comes on, but scanner does
not decode the bar code.
Table 3-1. Troubleshooting
Possible Causes
Scanner is powering up.
No power to the scanner.
Incorrect host interface cable is
used.
Interface/power cables are loose.
Scanner is disabled.
If using RS-232 Nixdorf B mode,
CTS is not asserted.
The USB bus may put the scanner
in a state where power to the
scanner is cycled on and off more
than once.
Scanner is not programmed for the
correct bar code type.
Bar code symbol is unreadable.
Bar code is out of range from the
scanner.
Possible Solutions
Normal when scanner is plugged
in.
Check the system power. Ensure
the power supply is connected if
the configuration requires a power
supply.
Power supply is not plugged in.
Ensure that correct host interface
cable is used.
Ensure all cable connections are
secure.
For Simple Serial Interface (SSI),
enable the scanner via the host
interface. Otherwise, see the
technical person in charge of
scanning.
Assert CTS line.
Normal during host reset.
Ensure the scanner is programmed
to read the type of bar code being
scanned.
Check the symbol to ensure it is not
defaced. Try scanning test bar
codes of the same bar code type.
See Appendix C, Sample Bar Codes
for test bar codes.
Move scanner closer to or further
from bar code.