closed caption

I am assisting a resident in a skilled nursing facility using DTV. The facility just upgraded to now provide HD DTV satellite service to the residents and now the closed captioning in the resident's room does not work. It's engaged/activated on the set. The closed captioning does not work on any channel. The residents do not have a DTV remote control like a home setup. How do I receive the CC signal on the channels? This is a big problem due to the hearing loss of some residents.