Schematics of the IES EC12I 12 channel Dimmer pack

l.s.

I acquired a second handed IES EC12I 12 channel dimmer pack. Although it looks all right and the manual dimming on the dimmer itself is working fine, it doesn't want to communicate with DMX512.
Nowadays only 3-wire networks are being used, but is it mandatory for this dimmer to also have the DIMStat feedback?

If not the case, then I think the communications on the circuitboard are toast. So could I anyhow get the electrical drawings of the dimmer boards inside? I'd like to replace the internal controller board by an Arduino or something similar and control the dimmerboards myself.

Greetz,

Arjo

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