Ricoh IM 4000 User Guide - Page 288

10. Troubleshooting Message Cause Solution and reference "The device's authentication service cannot be performed." Authentication cannot be performed because the authentication service is starting up or busy. • When User Code or Basic authentication is specified, wait a while until processing the machine address is completed. • When Windows or LDAP authentication is specified, wait a while until the server becomes ready for processing. If authentication is not possible even after waiting for a while, consult your administrator. "There is no response from the scanner. There may be a number of reasons for this, e.g. the data between the computer and scanner has been lost because of an increase in network traffic, the firewall in the virus protection software may be activated, or there might be problems with the hardware etc. If you can not fix this problem, please call service." The network is busy. The firewall function is enabled on the computer. The machine or the computer is not connected to the network correctly. Wait a while. Configure the firewall function of the computer to allow communication of the application used, or disable the firewall function. Check that the machine or the computer is connected to the network correctly. "User Authentication in SNMPv3 connection has failed." The authentication information is registered incorrectly in Network Connection Tool when SNMPv3 encrypted communication is enabled on the machine. Register the SNMPv3 authentication information in Network Connection Tool that is installed on the computer with the TWAIN driver. For the SNMPv3 authentication information, consult your network administrator. See "Installing the TWAIN Driver", User Guide (Full Version). 286