● Is the firmware version for the network device the latest?
Solution
If the firmware version for the network device is not the latest, unexpected operations may occur.
Contact the network administrator to check the firmware version, and consider updating it to the latest
version.
For details about how to update the firmware for the network device, refer to the manual of your network
device.
● Is the computer connected to a network device (such as a switch, a hub, or a router)?
Solution
Connect the computer to a network device (such as a switch, a hub, or a router).
For details, refer to the manual of your computer.
● Did you configure the settings related to communication conditions on a network device (such as a switch,
a hub, or a router)?
Solution
When the following are set on the network device (such as a switch, a hub, or a router), take measures
accordingly.
● Protocol filter function is enabled.
Allow the protocol which is to be used for communication.
● MAC address filtering is enabled.
Configure the network device (such as a switch, a hub, or a router) with the MAC address of the scanner.
Check the MAC address which is printed on the label on the back of the scanner. For details, refer to
Checking the Product Label (page 119).
For the settings on the network device, refer to the manual of your network device.
● Are there any security limitations in the network?
Solution
The access limitations for users may be configured in the network.
For details, contact the network administrator.
● Is the network stable?
Solution
Connect to the network after it becomes stable.
A network can be unstable by the following events:
● A network monitoring program is running.
● A file is transferring.
Troubleshooting
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