LOOKING FOR A SERVICE TOOL FOR TII.HAVING INTERMITANT SHUTDOWNS I THINK IS HAPPENING IN LOOP SELECTOR MODULES.I ALSO HAVE RESISTANCE TO GROUND ON THE GENERATOR ARMATURE.

No service tool available. Just use hyperterm to log in.

THANKS I TRIED HYPER TERMINAL.I USED 9600 BAUD 7 BITS EVEN PARITY.IT SAYS I M CONNUNICATING BUT NOTHING IS HAPPENING.

did you set stop bits to 2? i have some paper work, it looks like you press f4 on the old tandy 100 unit which brings up some menu choices, like selecting car or group, never worked on this unit, but i have some info if you get in a bind.