jv1080 bulk dump check sum error

> > > jv1080 bulk dump check sum error

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Half of twice one
Member Since: Feb 09, 2004

I've got a Roland JV 1080 and recently for the the first time ever I got the message "Check Sum Error" when trying to reload a bulk dump I'd saved in my sequencer (Logic). The synth didn't respond to anything - it just kept flashing the message "Check SUm Error" so I eventually switched it off. Then when I switched it on again, the sounds were very strange i.e. there was suddenly lots of reverb and/or delay and/or chorus on patches in my performance where previously there had been none. I didn'T know what to do so I set the synth back to Factory Settings. In the manual it just says you have "correct the check sum".

I scrubbed the bulk dump from the sequencer and recorded a new one. When I played it back to the synth I got the same error message.

My question is: how do I rectify this problem?

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Bane of All Existence
Member
Since: Mar 27, 2003

Feb 29, 2004 10:57 am

i tried to help find some support literature online, but a search at roland's website doesn't find anything about model JV 1080.

Czar of Midi
Administrator
Since: Apr 04, 2002

Mar 02, 2004 08:10 pm

The 1080 uses both Rom and Ram for storing the factoary and user presets. It is possible it is one of two things that have gone bad. You may have a bad ROM (read only memory) chip in the synth or it may depend on a battery back-up to keep the memory stored, and the battery has failed. This is not a likely target as it should warn you if this is the case.

Have you tried editing a new preset and dumping it to the PC then sending it back again? You may be getting a bad sysex code line in the string that is causing the dump to be invalid when trying to load an entire bank. Try doing one or two presets and see what happens. If this doesnt work either, I would suggest getting it to a service center as you may have a bad Rom in the synth. Do you have any Rom cards installed for differant sounds? If one of those cards has gone bad this also can cause a problem.

Let me know what happens with a single preset dump.

> > > jv1080 bulk dump check sum error

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