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tech / sci.electronics.repair / Re: Behringer DPM5 Audio Effects module Error d2

Behringer DPM5 Audio Effects module Error d2

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From: carg121@usenet.com (Usenetist)
Newsgroups: sci.electronics.repair
Subject: Behringer DPM5 Audio Effects module Error d2
Date: Sat, 27 Jan 2024 23:48:26 -0500
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by: Usenetist - Sun, 28 Jan 2024 04:48 UTC

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
https://community.musictribe.com/discussion/products/24/34/324663/dpm5-effects-module-error-d2

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?

Re: Behringer DPM5 Audio Effects module Error d2

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From: carg121@usenet.com (Usenetist)
Newsgroups: sci.electronics.repair
Subject: Re: Behringer DPM5 Audio Effects module Error d2
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by: Usenetist - Sat, 3 Feb 2024 07:07 UTC

On 1/27/24 23:48, Usenetist wrote:
> 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
> https://community.musictribe.com/discussion/products/24/34/324663/dpm5-effects-module-error-d2
>
> 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?

Well, I removed and replaced the EDO RAMs a second time and the problem
was solved. Putting it down to a soldering error the first time, or
possibly a bad chip.

Subject	Author
Behringer DPM5 Audio Effects module Error d2	Usenetist
Re: Behringer DPM5 Audio Effects module Error d2	Usenetist