GEM ws1 service manual

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caballero_3310
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Re: GEM ws1 service manual

Unread post by caballero_3310 » Fri Jul 05, 2019 12:32 pm

Hello again,

I bought another gem ws1 (without floppy disk) it works, the new board is a bit different, I did what you told me to change the eprom, I left the gem WS1 oriental operating system, but there is a volume problem, , it sounds very low and the rhythm kits are not heard , and when you put the original eprom back on it works the sound normally :(

Thanks
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Miks wrote:
Fri Jul 05, 2019 11:54 am
caballero_3310 wrote:
Fri Jul 05, 2019 11:25 am
Ok, Saul, thought it is the same board, which has socket for the connection of scale arabic, the problem is where to get the OS operating system of the oriental version.
I suppose the OS (or at least one half of it) is located in IC18 which is an eprom. So you have it already - a swap to a 'new' mainboard should do the trick...

The content of IC22 eventually could be a part of the OS too - but since this seems to be 'mask-programmed' this part may be the same on a 'normal' as well as on a 'orientalic' version of the synth... if not, just swap this IC too.
Good solution, i'll buy a ws1 gem and go ahead that works and fixed.
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Re: GEM ws1 service manual

Unread post by caballero_3310 » Thu Sep 12, 2019 1:25 pm

I need OS (Operating System) for GEM WS1 ORIENTAL, THANKS
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Re: GEM ws1 service manual

Unread post by BASSGD » Wed Nov 06, 2019 6:06 pm

Hazhaz wrote:
Thu Dec 07, 2017 9:44 pm
After powering up the ws1 ,the screen displays only blocks in the first line, and it is stuck in this status.the factory rest didn't resolve the problem
I had, I think, the same problem with that and noticed on the motherboard that it was burned a transistor, changed it and changed and the second where it was the same and now it's okay. It is a transistor BC550C
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