Studio Spot 250 Schematics / motors

Greetings Forums,

I was just donated two Studio spot 250s that had been in storage for many years. Both fail with misc home issues. I downloaded the manuals and schematics for analysis (I am technical). I reset the units to factory specs and verified the voltage taps to be correct. The schematics reference two pages of motor drivers ( I have 3773 type). These pages only reference the motors by M0, M1, M2, M3, M4, M5, M6 and M7.

Would someone be able to enlighten me as which motor designation M0 etc belongs to which motor (color, lithos etc) ?

Is there a better diagram of the motherboard, showing component layouts than those general pictures in the user manual?

I appreciate any input. I currently have 5v and motor leds on, units show Home effect error, Home Color Error and Home ROT1 error. Effect and color are obvious, but what about ROT1?

Thank you very much.
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