You can review the connection report messages to diagnose LDAP connection problems in Web Config.
|Connection test was successful.||Connection to the server is successful|
|Connection test failed. Check the settings.||One of the following occurred:
|Connection test failed. Check the date and time on your printer or server.||Connection failed because the time settings for the product and the LDAP server do not match|
|Authentication failed. Check the settings.||Authentication failed because the User Name and Password settings are incorrect or, if you selected Kerberos Authentication as the Authentication Method setting, the time and date are not configured correctly|
|Cannot access the printer until processing is complete.||The product is busy|