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Meridian 8x24 lost programming

Meridian 8x24 lost programming

Meridian 8x24 lost programming

I have a Meridian 8x24 system. We recently purchased this system used. It sat unplugged for about 3 weeks before we installed it, but has been running for at least 2 weeks since installed.  Today, we lost power and apparently the UPS didn't hold.  When the system came back up it had reset to default. I read in the manual that the system should hold the setting for at least 1 day without power.  I'm assuming that there is an internal battery that is dead.  Does anyone know if this can be replaced without calling a service rep?

RE: Meridian 8x24 lost programming

The most common issues that result in a "system default" are:

(1) The Software cartridge loosing connection with the KSU while powered up
Could it be that your software cartridge is not seated very well? I would surely check that.

(2) As you suspected, the internal battery could be dead. Unfortunately, the battery that holds the programming on an 8x24, if I am not mistaken, is in the Software cartridge itself. It may be that you need to replace the cartridge. I am not sure of the integrity of the cartridge once opened.

Jeter - Sclum... what do you think?

RE: Meridian 8x24 lost programming

HMMM I do recall the 8x24 battery residing on the cartridge. The MICS battery is on the back plane of the PCB. I looked on nortel web site and could not locate the info.


J.Fisher CCNA

RE: Meridian 8x24 lost programming

Thanks guys.  I'll definetly check that cartridge. Apparently this isn't a common problem.  Any more info you come across would be helpful.

RE: Meridian 8x24 lost programming

I also believe it to be on the software cartridge. If you have a later release, there may be 2 pieces to your cartridge. The software itself slides into a larger cartridge, then the 2 pieces go in your cabinet as one. If this is the case, I believe the battery is located in the cartridge that fits into the cabinet, not the software itself. I`m not 100% on this, but I believe Nortel later made it in two pieces so upgrading software would be easier and retain its memory kept on that secondary cartridge.

If you do have a 2 piece cartridge, you could probably purchase the part that fits into the cabinet without replacing your software. If it`s all in one piece, you`ll need to replace it.


RE: Meridian 8x24 lost programming

I checked it out today. Schlum, what you describe is what we have. It also appears that what holds the memory is not a battery, but 2 large capaciters.  I didn't think they went bad, but apparently in this case they have.  I guess I'll try to locate one of these adapter pieces somewhere.  Thanks for your help.

RE: Meridian 8x24 lost programming

Good job on keeping on top of the problem. Where did you locate the information about the capaciters? I do know that when you short the pins on a 0x32 it defaults and changed the system id.

J.Fisher CCNA

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