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# Messages Displayed on the Client Computer

This section describes likely causes of and possible solutions for the main error messages displayed on the client computer when using the TWAIN driver. If a message not described here appears, act according to the message.

Message | Causes | Solutions
--- | --- | ---
`"Any of Login User Name, Login Password or Driver Encryption Key is incorrect."` | The entered login user name, password, or driver encryption key was invalid. | Check the login user name, login password, and driver encryption key. Permission to use this function has not been granted. Contact your administrator.
`"Call Service"` `"Please call your service representative."` | An unrecoverable error has occurred in the machine. | Contact your service representative.
`"Cannot add any more scanning mode."` | The maximum number of registerable scan modes has been exceeded. | The maximum number of modes that can be stored is 100. Delete unneeded modes.
`"Cannot connect to the scanner. Check the network Access Mask settings in User Tools."` | An access mask is set. | Contact the network or scanner administrator.
`"Cannot find "XXX" scanner used for the previous scan. "YYY" will be used instead."` ("XXX" and "YYY" indicate scanner names.) | The main power switch of the previously used scanner is not set to "On". | Check whether the main power switch of the scanner used for the previous scan is turned on.
`"Cannot find "XXX" scanner used for the previous scan. "YYY" will be used instead."` ("XXX" and "YYY" indicate scanner names.) | The machine is not connected to the network correctly. | Check that the previously used scanner is connected to the network correctly. Cancel the Personal Firewall of the client computer. For details, see Windows Help. Use an application such as telnet to make sure SNMPv1 or SNMPv2 is set as the machine's protocol. See "Remote Maintenance Using telnet", Network and System Settings Reference. Select the scanner used for the previous scan.
`"Cannot specify any more scanning area."` | The maximum number of registerable scan areas has been exceeded. | The maximum number of scanning areas that can be stored is 100. Delete unneeded scanning areas.
`"Clear Misfeed(s) in ADF."` | A paper misfeed has occurred inside the ADF. | Remove jammed originals, and then insert them again. For details, see Removing Jammed Paper. Check whether the originals are suitable to be scanned by the machine.
`"Communication error has occurred on the network."` | A communication error has occurred on the network. | Check whether the client computer can use the TCP/IP protocol.
`"Error has occurred in the scanner driver."` | An error has occurred in the driver. | Check whether the network cable is connected correctly to the client computer. Check whether the Ethernet board of the client computer is recognized correctly by Windows. Check whether the client computer can use the TCP/IP protocol.
`"Error has occurred in the scanner."` | The application-specified scan conditions have exceeded the setting range of the machine. | Check whether the scanning settings made with the application exceed the setting range of the machine. Disable the client computer's own firewall. For details, see Windows Help.
`"Fatal error has occurred in the scanner."` | An unrecoverable error has occurred in the machine. | An unrecoverable error has occurred in the machine. Contact your service representative.
`"Insufficient memory. Close all other applications, then restart scanning."` | Memory is insufficient. | Close all the unnecessary applications running on the client computer. Uninstall the TWAIN driver, and then reinstall it after restarting the computer.
`"Insufficient memory. Reduce the scanning area."` | Scanner memory is insufficient. | Reset the scan size. Lower the resolution. Set with no compression. See TWAIN driver Help. The problem may be due to the following cause: Scanning cannot be performed if large values are set for brightness when using halftone or high resolution. See "Relationship between Resolution and Scan Size", Scanner Reference.
`"Invalid Winsock version. Please use version 1.1 or higher."` | You are using an invalid version of Winsock. | Install the operating system of the computer or copy Winsock from the operating system CD-ROM.
`"No User Code is registered. Consult your system administrator."` | Access is restricted with user codes. | Contact your administrator of the machine.
`"No response from the scanner."` | The machine or client computer is not connected to the network correctly. | Check whether the machine or client computer is connected to the network correctly.
`"No response from the scanner."` | The network is crowded. | Wait for a while, and then try to reconnect.
`"Scanner is in use for other function. Please wait."` | A function of the machine other than the Scanner function is being used such as the Copier function. | Wait for a while, and then reconnect. Cancel the job in progress. For example, press [Exit], and then press the [Copy] key. Next, press the [Clear/Stop] key. When the message `"The Clear / Stop key was pressed. Are you sure you want to stop scanning?"` appears, press [Stop].
`"Scanner is not available on the specified device."` | The TWAIN scanner function cannot be used on this machine. | Contact your service representative.
`"Scanner is not available. Check the scanner connection status."` | The machine's main power switch is off. | Turn on the main power switch.
`"Scanner is not available. Check the scanner connection status."` | The machine is not connected to the network correctly. | Check whether the machine is connected to the network correctly. Deselect the personal firewall function of the client computer. For details, see Windows Help. Use an application such as telnet to make sure SNMPv1 or SNMPv2 is set as the machine's protocol. See "Remote Maintenance Using telnet", Network and System Settings Reference.
`"Scanner is not ready. Check the scanner and the options."` | The ADF cover is open. | Check whether the ADF cover is closed.
`"The name is already in use. Check the registered names."` | You tried to register a name that is already in use. | Use another name.