Looking for DX7IIFD service manual

[Ingo Debus]

Magnus Danielson wrote:
> 
> Hiya!
> 
> I have a sligthly defunct DX7IIFD I just found out the other day. It
> has been turned off for ages, it must have been at least several years
> before that I last had it powered up. It just happend to be so that it
> was covered with various papers, cards, books etc.
> 
> So, now when I turned it on it will not react on most of the switches
> and I can make it to emit a single beep. Most annoying.
> 
> Well, I haven't yeat openned it up for visual check, so I don't know
> if it is a really simple problem. If someone has a good hint, I
> naturally take it

Check the battery.

Ingo