DSS-1 with problems (faulty cpu2?)

blindwatch · Post by **blindwatch** » Mon Sep 13, 2021 11:40 am

Greetings dear forum members,

I have recently purchased a DSS-1, but something is wrong. The Data Entry sliders don’t work and when I load one of the default sounds from Harmonic Synthesis, all keys play the same pitch.

From the service manual I have learned that both tasks (data entry + key scan) are performed by cpu 2. Is it possible to narrow down the cause for anyone here?

Cheers
Georg

voip · Post by **voip** » Mon Sep 13, 2021 4:52 pm

The analogue multiplexer and A/D are both in the signal path from the data entry sliders and the joystick, so need to be checked.