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11.4. Network Troubleshooting (Wireless LAN)
Note: This procedure is an example. Depending on the actual use environment, situation, etc., it may not follow the
procedure.
procedure.
No
Yes
START
Check the wireless LAN mode of the
device settings.
device settings.
Is it wireless LAN mode?
Change the device setting to
wireless LAN mode and power off
and then on again.
wireless LAN mode and power off
and then on again.
Check the SSID / Password setting.
Is the SSID / Password
setting correct?
setting correct?
Correct SSID / Password setting.
Check the router
Is the router working
properly?
properly?
Turn the router power off and then on
again.
Replace the router.
again.
Replace the router.
Is the IP filter set?
Check the DHCP server setting.
Contact your network administrator.
Disable AUTO IP setting.
Contact your network administrator.
Disable AUTO IP setting.
Check the allocation status of the
IP address and subnet mask on
the scanner.
IP address and subnet mask on
the scanner.
Are "0.0.0.0"
or "169.254. *. *"
displayed?
or "169.254. *. *"
displayed?
Correct the IP filter setting.
Check the status of the DHCP server.
Contact your network administrator.
Check the status of the DHCP server.
Contact your network administrator.
Is IP setting correct?
Some devices have the same
IP address. Contact your network
administrator.
IP address. Contact your network
administrator.
Correct the IP setting.
Contact your network administrator.
Contact your network administrator.
Check the IP setting (IP address
/subnet mask / gateway) of the
scanner.
/subnet mask / gateway) of the
scanner.
Check the status of the DHCP
server. Contact your network
administrator.
server. Contact your network
administrator.
Is the DHCP server
working properly?
working properly?
Is the IP address
allocation method
DHCP?
allocation method
DHCP?
Confirm the connection between
the CONTROL Board and the
WIRELESS LAN Board.
the CONTROL Board and the
WIRELESS LAN Board.
Check the scanner setting (IP
address / MAC address) with
"ARP-a" command and NW
setting tool.
address / MAC address) with
"ARP-a" command and NW
setting tool.
Is the connection correct?
Is there any
response with the "PING"
command?
response with the "PING"
command?
Are the MAC
addresses the same?
addresses the same?
Check the LAN function of the PC.
Check the state of the router and
hub. Contact your network
administrator.
Check the state of the router and
hub. Contact your network
administrator.
Connect the CONTROL Board
and WIRELESS LAN Board
correctly.
and WIRELESS LAN Board
correctly.
Replace the CONTROL Board
and WIRELESS LAN Board.
and WIRELESS LAN Board.
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