The document conversion machine should be a dedicated machine that isn't used for any other Jive services. After you install Jive on the conversion machine, use the following commands to disable all the services other than jive-docconverter. Run all of these commands as root unless otherwise noted.
service jive-database stop
service jive-eae-service stop
service jive-application stop
service jive-httpd stop
service jive-cache stop