strange signs on the screen

Big thanks for answer.
No, I did not replace batteries. The unit did not want to start imaging on the beginning, but after severlal minutes of powering up device, the image became available.
I will try Your combination tomorrow, and let You know about success (or defeat ) :-)
About batteries: is that special type of batteries for this model? The problem is that shipping them from USA to Poland will remarkably more expensive than batteries actual value.... Can I use some popular batteries available on the market?
Regards,
michal

2000 should have been fine... the system only runs 1200-1500 amps.

As for the batteries on the CVC... I haven't tried anything other than the 3.9v lithium batteries that Acuson originally placed on the board. They're manufactured by a company called Electrochem. The part number is BCX82-3B50, since the BCX72's are no longer in production. They're slightly unique in that they have 3 prongs/pins on the back instead of your normal +/- nubs.

There is a picture on our website at http://u-d-s.com/productDetail.php?category=part&id=384

I apologize, I had the part number wrong. The new one from Electrochem is BCX85-3B50. I had written BCX82, but was off. The BCX72 is the older version of that battery.. but if they both measure at 3.9v, you should have battery power on the board. Is that what you meant when you said "both are on 3,9V."?

It is possible that the RAM onboard was corrupted somehow, but to remove all of the characters from the screen you can hold down the "Code" key, and press "Delete" (both on left side of keyboard). That should remove the random characters on the screen. Also, if the system isn't having any issues keeping the encryption strings stored you should be fine with the batteries... I assumed that since you had those strange characters on your screen the batteries were dead and would need to be replaced.

As for the foam, you do not need it for the system to operate. I think the original idea was to keep the air flow in the system tight against the boards, but the foam turns to mush after so much time and humidity. I have sold many systems without the foam over the boards on the top card cage and have not had any issues.

Concerning the power the system uses 1.2 kWatts continuous, 1.5 kWatts fluctuating. It depends on what tasks its performing at the time, as well as what peripherals you have attached to it. We sell the 2000 watt transformer with it for safety reasons.