Tascam Portastudio individual outputs and motor stop

[Bugish4567]

Has anyone installed individual outputs to a Tascam portastudio? I have a couple models and I'm seeking help.

The models I have are the 488, 488 mkII, and the 414 mkII.

Schematics for all three can be found here: https://tetrakansupermonobloc.home.blog/category/manuals/service-manuals/


Thanks for any help!