Jerome St-Pierre a écrit :
> Never mind. I searched some more and other users said we must make a backup
> before changing the battery.
>
YES, unless you don't mind to loose all the patches stored in your
keyboard (i.e : you have them on your computer as .an or .mid files...)
> But I still have another stupid question. I don't understand how removing
> the battery could affect the patches? Aren't they saved on some kind of hard
> drive? Or are they really kept loaded in memory with the battery?
>
YES. These patches are stored in a static CMOS RAM (not a flash
EEPROM...) which in "stand by mode" is supplied by the back up battery.
The extremely low, but not null, supply current (a few nA) in this
special mode allows years of storage without the help of the main P.S.
But without any supply all is wiped out . When the AN1x was designed,
flash EEPROMS vere too small and too slow, and a hard disk would be too
huge and too expensive to store only a few tens of kbytes. An AN1x patch
is not a sampled sound but only a few lines of data and instructions.
> I have no clue since I never did anything like that...
>
> Thanks for your help!
>
If you don't want for some reason of your own to make a memory backup on
a computer you can try the "kamikaze way" : open your synth, turn on the
main supply and then change your battery BUT take care of short circuits
when you're doing that. The screwdrivers or pliers are obviously
conductive, but the battery itself (even flat out..) too : don't touch
anything else with any metal part. When the main supply is "on" the RAM
is in "active mode" and does not need any other supply.
Cheers.
J.F.
> On Fri, Mar 11, 2011 at 9:41 PM, Jerome St-Pierre
> <jeromestpierre@...>wrote:
>
>
>> Hi all,
>>
>> I will soon change my battery and I am wondering if I should backup my
>> patches before proceeding? I guess not by reading this conversation but I
>> would just like to be sure...
>>
>> Thanks,
>>
>> Jérôme
>>
>>
>> On Sun, Nov 14, 2010 at 3:54 PM, boogie_koski<boogie@...>wrote:
>>
>>
>>>
>>> --- In AN1x-list@yahoogroups.com, "Summa"<flotorian@...> wrote:
>>>
>>>> Just open up the bottom of the synth, it's mostly CR2450 and not the
>>>>
>>> And If,.. Your new battery don't go into it's place, just go and
>>> exchange/buy new one from different manufacturer. Usually they match, but
>>> not 100%. I bought first Renata CR2450N (is that N the difference?) and no
>>> way to put that into the holder!
>>> Varta CR2450 just cliked in.
>>>
>>> Greetz, Boogie.
>>>
>>>
>>>
>>>
>>
>>
>> --
>> Jérôme St-Pierre
>>
>>
>
>
>