What are the undescribed terminals on Simplex 4004 used for

This is the first time I worked on a Simplex 4004 that is used for general alarm. I downloaded a .pdf installation manual for this panel but it doesn’t explain what terminals 1, 2, 7, 8, 9, 10, and 11 on the main board are for and how they are used.

I have a AP&C model relay card with 24 VAC attached to the “N/C” and “C” dry contacts that cuts power to the door holders when panel goes into Alarm mode.

Also, the panel door LED alarm zone display is not working.

The ribbon cable going to the alarm zone indicator card has the black wire and adjoining wire stripped for connecting but they are not connected to the panel terminals. I suspect that the indicator card gets its’ power from the terminal connections and the relay card is powered from the terminal connections when the fire panel goes into alarm.

Any help would be greatly appreciated.

Toronto, Ontario guy

Terminal 1 - + 24 volt source

Terminal 2 – 0V return

Terminal 7 – Supervisory output (goes to 0V when active)

Terminal 8 – Trouble output (goes to 0V when active)

Terminal 9 – Alarm output (goes to 0V when active)

Terminal 10 – 4 Wire Detector 0V (avoid capacitive loads)

Terminal 11 – Low power 0V (for light duty use)