I have a railking LIRR RS-1 Goodfellow colors Cat no. 30-20247-1 . When I start this up in DCS hitting start up button. I see a message "Maintenance required". I use the variable channel and sometimes the sounds will come on while I am scrolling up to the desired voltage.
My question is what does the message mean and what do I need to do . I have other PS-3 diesels and one steam engine and have not seen this message on those engines.
Thanks for your help on this one