I know close to nothing about these computers so please bear with me.
I'm trying to get a 410 program recorder to work with my 800 computer. I insert the Basic CXL4002 cartridge into the left slot, insert the Touch Typing CX4110 tape into the 410, power on the 800 and see "ready" on screen and press "play" on the 410 but the 410 does nothing.
Have I done everything correctly? I suspect the 410 is simply broken.
Appreciate any help!