Check the following points

• Are the scanner and server connected to the network?

• Is the scanner's IP address correct?

• Is the IP address of the scanner used for other communication devices?

• Have you connected another communication device with the same IP address as the scanner to the server in the past?

• Is there a firewall device on the same network as the scanner and the server?

• Are the settings on the scanner that are related to the server specified correctly?

• Are the settings on the server specified correctly?

If the problem persists, check the items in Before You Contact the Scanner Service Provider first, then contact the distributor/dealer where you purchased this product. Refer to the contact information in the Contact List if supplied with this product, or refer to the contact information in the Contact for Inquiries section if provided in Safety Precautions supplied with this product, and then make an inquiry.

Are the scanner and server connected to the network?

Solution

Refer to the following and take measures according to the connection method.

• For Wi-Fi

  Cannot Connect the Scanner and a Computer via Wi-Fi

• For a wired LAN

  Cannot Connect the Scanner and a Computer via a Wired LAN

Is the scanner's IP address correct?

Solution

Check the scanner's IP address in the following procedure:

1. On the touch screen, press → [Scanner Settings] → [Network].

2. Perform one of the following according to the connection method.

   For Wi-Fi, press [Wi-Fi] → [IP Address].

   For a wired LAN, press [Wired LAN] → [IP Address].

3. On the [IP Address] screen, check the setting items.

   When specifying an IP address manually, specify the correct IP address.

   When setting the IP address automatically, check whether the DHCP server functions normally.

   Even when the DHCP server functions normally, an IP address may not be assigned correctly depending on the settings for the DHCP server. Check the operation status and the settings for the DHCP server.

Is the IP address of the scanner used for other communication devices?

Solution

If there are multiple communication devices using the same IP address on the same network, communication may fail. Avoid duplicates in IP addresses.

Have you connected another communication device with the same IP address as the scanner to the server in the past?

Solution

Communication fails if you connect the scanner to the server and change the preferences settings without turning off the server after the server communicated with another host or communication device with the same IP address as the scanner. Restart the server.

Is there a firewall device on the same network as the scanner and the server?

Solution

Check that the access from the scanner is not prohibited by the firewall device.

Are the settings on the scanner that are related to the server specified correctly?

Solution

Check the server setting items in the following procedure:

1. On the touch screen, press → [Scanner Settings] → [Network] → [Server].

2. Press the server to be connected to, and check the setting items.

   • Whether [Enable] is on.

   • Whether [Host Name/IP address] and [Port Number] are correct.

   • Whether the setting for [Authentication] for a proxy sever is correct.

Are the settings on the server specified correctly?

Solution

Refer to the manual for the server and check the settings.