What?
c001,c02,c003...
err1
err2
err3
Looks like it developed a case of amnesia due to a dead battery. Unfortunately, the battery is soldered in place. You could unsolder it, and then solder in a new one. But if you're going to do that anyway, it may be worthwhile to do the battery mod:
http://adadepot.com/mods/ADA_MP-1_Battery_Mod.pdf
Note in the pics, they replaced it with a CR2032 battery and corresponding clip.
The OE battery is BR2325, and the clip on Mouser is part # 534-104.
BTW, dead battery probably also means your patches have been erased.
yep replacing the battery will solve your problem.
Hopefully you've backed up your patches (or written them down), or it's start again (not always a bad thing though). It seems there's a spate of MP1 battery failures lately, the year is upon us.
Battery good: 3.12 V :(
Mmm well good about the battery, not good about the errors, maybe it's the RAM chip ?
Measure on pin 28 of the RAM chip (6264) located next to the eprom (it has the same size),you should have around 2.5V with the unit off.