0TT 910 Parity Error (low)

[hrhoward]

Hello folks,

Getting a 910 Parity Error (low) on power up. I have tried holding down Can & Delete, Reset & Delete, Reset & Can. Error message still there. Can't get past it.
Machine has been sitting in storage for a couple years. I just replaced batteries (with power on).
Is memory board toast? Can I just replace SRAM chips? I did check for +15 vdc on board and it was there.

Edit: I removed the four SRAM chips with no difference.

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[tristarcnc]

I would suggest removing the socketed RAM chips and trying to clear memory again (powering on while holding reset and delete). This most likely will not work because when you clear memory then memory access size is brought down to basic memory. You might get lucky though so it is worth a try. If that does not work then I would suggest sending the board in for testing and repair if needed. Our test fee for that board is $50.00 and if it does need repair then ignore the test fee and the cost of repair is $427.00. See our website at FANUC CNC Parts and Repair Services | GE FANUC Unit/PCB Repairs | Servo Drive Motor Systems | Power Supplies | FANUC Retrofits | GE FANUC Service | CNC Machine Repair & Service | Tri Star CNC Services GE Fanuc Parts and Repair.

[hrhoward]

Thanks for the reply tristarcnc,
Are you referring to these four chips? (in picture)

[tristarcnc]

That is correct.

[hrhoward]

Hi,
Please power up the machine with holding keys {0 & DELETE} or { - & .}

Alas, no difference. Thanks though.

[memoryman]

It's most likely one of the soldered SRAM chips, including the parity chips.

[hrhoward]

Thanks deeps05,
I've tried every technique that I know of to no avail.

memoryman,
Which ones are the parity chips?

[memoryman]

The 28 pin narrow body ones, near the blue connector.

[lectriceng]

Replace batteries because the memory is gone. Worst case scenario is to replace the mother board.

Sent from my HUAWEI P6 S-U06 using Tapatalk

[hrhoward]

Ended up being the SUB CPU.