Wasp Bar Code WLS 8400 FZ 用户手册

3-4

Scanner emits short low/short 
medium/short high beep sequence.

Scanner is powering up.

Normal when scanner is plugged 
in. 

Nothing happens when scan trigger 
is pressed. 

No power to the scanner.

Check the system power. Ensure 
the power supply is connected if 
the configuration requires a power 
supply.

Power supply is not plugged in.

Incorrect host interface cable is 
used. 

Ensure that correct host interface 
cable is used. 

Interface/power cables are loose.

Ensure all cable connections are 
secure.

Scanner is disabled.

For Simple Serial Interface (SSI), 
enable the scanner via the host 
interface. Otherwise, see the 
technical person in charge of 
scanning.

If using RS-232 Nixdorf B mode, 
CTS is not asserted.

Assert CTS line. 

Scanner emits short low/short 
medium/short high beep sequence 
more than once.

The USB bus may put the scanner 
in a state where power to the 
scanner is cycled on and off more 
than once.

Normal during host reset.

Laser comes on, but scanner does 
not decode the bar code.

Scanner is not programmed for the 
correct bar code type.

Ensure the scanner is programmed 
to read the type of bar code being 
scanned.

Bar code symbol is unreadable.

Check the symbol to ensure it is not 
defaced. Try scanning test bar 
codes of the same bar code type. 
See 

for test bar codes. 

Bar code is out of range from the 
scanner. 

Move scanner closer to or further 
from bar code.