I have a Behringer power mixer (PMX1000) that features a DSP effects module with a 2-digit 7-seg display.
The DSP module is a daughterboard with legend on it DPM5 PCB304030REVI
Photo here
formatting link
It has a TMS57002 DSP and P80C32SBAA microcontroller and EDO DRAM (2 off HY514404).On power up, the display shows F1 for about 100ms and then stays on d2
I only have a schematic for the main mixer board, which basically contains just the 7-seg displays, so I am assuming the d2 code originates from the software running on the DSP board.
I have seen some threads suggesting replacing the DRAM fixed it, but I have tried that (once) with no effect.
Does anybody have a schematic or any official info on what the d2 code specifically means?