AKAI EWI3020m: VCA issue? Service Manual?

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AKAI EWI3020m: VCA issue? Service Manual?

Postby micahjonhughes » Wed Jul 09, 2014 5:22 pm

In case you are not familiar with this module, it is a CEM based mono synth, CEM 3374 and CEM3378, designed to be used with an Akai wind controller. It also has midi.

I purchased it untested (without a wind controller). It needs a new battery, but seems to otherwise function with the problem noted below). I'm pretty excited as it sounds good.

The one issue is that the VCA does not fully close. As the VCA will open and close with the EG, I don't think that the chip is bad, but that the DAC is not properly calibrated. Any thoughts?

Anyone have a service manual?

Thanks,

Micah
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Re: AKAI EWI3020m: VCA issue? Service Manual?

Postby micahjonhughes » Wed Jul 16, 2014 7:33 pm

Although no one seems particularly interested . . . .

I obtained the service manual and adjusted the DAC offset, which fixed the problem.

I now have the service manual should anyone need a copy.

BTW: This is a great sounding synth! It sounds huge.
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Re: AKAI EWI3020m: VCA issue? Service Manual?

Postby madtheory » Thu Jul 17, 2014 11:51 am

Glad you fixed it. Always been curious about this synth.
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Re: AKAI EWI3020m: VCA issue? Service Manual?

Postby itatsugachi » Sun Feb 22, 2015 1:51 pm

Hi,
I just purchased an EWI3020M that needs servicing - new battery definitely needed.
I would love to get a copy of the service manual.
Either a .pdf or a physical copy would be fine.
I live in the USA - please let me know how much to send you (via PayPal).
If you are sending a physical copy I will email you the address.
Thanks in advance!
Malcolm
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Re: AKAI EWI3020m: VCA issue? Service Manual?

Postby Citysong » Tue Mar 17, 2015 6:29 am

What would I need to do to get a copy of the service manual for the ewi3020m? Please let me know.
Thank you,
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