Studer a810 eeee3 error

[baxa]

On the display My STUDER A810 Is EEEE3 Error.
After Changing the Batery and resetting error is the same.
Any help?

 

[Ki Choi]

Hi baxa:

You need to remove the RAM chip and place it on a sheet of aluminum to short out the pins and to erase the corrupt data, reinsert the RAM into the MPU card and power up. You might still get the error but after second power up, it should clear. Otherwise, you have issues with you MPU card especially if the battery was leaking acid before you replaced it. You need to look at the sockets and traces around the battery to make sure the leak didn't eat into the circuit traces and corroded the chip sockets.

Basically, your firmware is not loading into the RAM properly at power up.

Ki

 

[baxa]

Ki thank You very very much but unfortunately aluminium dosent solved Our problem.
I bay 3 new programed firmware eprom for 810. After turn on recorder ,error on display now is '07070' and leds for
play,backward and forward light simultaniosly.

 

[Ki Choi]

Try to reset the MPU by pressing the small black button near the edge of the card with your finger. As long as you don't get EEEX error message, the deck is in better shape.

Just to confirm, you did remove the RAM chip that is located above the three EPROMs and shorted the pins to erase corrupt data, correct?

If you still have issues, there isn't much a person can do other than to replace the MPU card...sorry.

 

[baxa]

Problem solved.
2-th Set of new eproms hawe errors too and even 3-th Set of new eproms solved problems.
Thank one moor time to Ki for help and suport

 

[Ki Choi]

baxa:

It's good to hear happy endings.

If you have the means to back up the firmware chips, you should.

Ki