Originally Posted by
ZigwareCNC
It's all fixed. CMOS battery had died in the realtime board. Sucks this causes a bogus error during diagnostics.
To fix:
1. Pull realtime board
2. Hook up on a test bench.
3. For my version ( 3-424-2171A01 ), you will need the following:
a) AT power supply from an ancient computer
b) 34pin floppy drive
c) ISA or PCI vga card
d) AT keyboard or PS2 adapter
4. Download CMOS restore program and data files from Siemens or MAG that match your realtime board
5. Verify that when you boot the board that you have a CMOS error.
6. Turn everything off and replace your CMOS battery
7. Turn it back on and enter the BIOS.
8. Set the date and time, then exit and save your settings.
9. Boot to a DOS boot disk.
10. Insert the floppy with the CMOS restore utility and run the batch file.
When first powered up, mine showed CMOS checksum failure. I measured the battery voltage at .42 volts. Should be 3.
Hope this helps others diagnose this issue.