To anyone who can help.

How can I restore the functionality to my DX 21. It has lost
everything...I mean EVERYTHING.

Thanks

The DX21 can be reset to voices copied from it's internal ROM,
instructions here

on page 9.

When I got my DX21 it had nothing but rectangles in the display, and
made no sounds (due to a dead battery), but copying voices from a ROM
back to RAM, and replacing the battery did the trick.

Later on it got intermittent, and I had to resolder the PC board.

Hope this helps.

George




--- In YamahaDX@..., "jenniefrench67" <alf2020@v...>
wrote:

To anyone who can help.

How can I restore the functionality to my DX 21. It has lost
everything...I mean EVERYTHING.

Thanks

--- In YamahaDX@..., "rylos22" <rylos@s...> wrote:
oops! it's on page 19

The DX21 can be reset to voices copied from it's internal ROM,
instructions here

on page 9.

When I got my DX21 it had nothing but rectangles in the display, and
made no sounds (due to a dead battery), but copying voices from a ROM
back to RAM, and replacing the battery did the trick.

Later on it got intermittent, and I had to resolder the PC board.

Hope this helps.

George




--- In YamahaDX@..., "jenniefrench67" <alf2020@v...>
wrote:

To anyone who can help.

How can I restore the functionality to my DX 21. It has lost
everything...I mean EVERYTHING.

Thanks

开云体育

If I remember correctly (it's been a couple of years) the internal
programming / voice memory data is kaput, thus the rectangles. I
loaded it fresh from the voice data stored permanently in ROM (which
will survive no battery power) by copying a bank of voices from ROM
into RAM, basically by following the directions on page 19. I don't
think I had to do any kind of reset, or anything else.

george


--- In YamahaDX@..., "Alan & Jennie French" <alf2020@v...>
wrote:

Dear George,
Thank you for your help, I did find it on page 19. I have replaced the
internal battery, but I still only get the rectangles in the

display. Am I

correct that the internal programming is gone since the internal battery
died? If that is correct, how did you re-load the programming?
Thanks,
Alan

-----Original Message-----
From: rylos22 [mailto:rylos@s...]
Sent: Friday, January 14, 2005 11:21 AM
To: YamahaDX@...
Subject: [YamahaDX] Re: help DX21 memory



--- In YamahaDX@..., "rylos22" <rylos@s...> wrote:
oops! it's on page 19

The DX21 can be reset to voices copied from it's internal ROM,
instructions here

on page 9.

When I got my DX21 it had nothing but rectangles in the display, and
made no sounds (due to a dead battery), but copying voices from a ROM
back to RAM, and replacing the battery did the trick.

Later on it got intermittent, and I had to resolder the PC board.

Hope this helps.

George




--- In YamahaDX@..., "jenniefrench67" <alf2020@v...>
wrote:

To anyone who can help.

How can I restore the functionality to my DX 21. It has lost
everything...I mean EVERYTHING.

Thanks

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<> .

I have the same problem. Display is garbled with Japanese characters and random blocks. Loading Rom into Ram did not change/fix anything. Battery has been replaced. There must be an additional step besides loading Rom into Ram.?

I have a Cassette cable.?

I cannot get the Test 2 to pass. I get the Error Cass.!
Has anyone else solved this??