- Need OSAI 8600 Manual "8600 Harware Calibrations" . - After Power on System is doing Hardware Auto Test - Test is stopping with CPU:2 (means CPU Timer error) Does anybody knows possible root cause for CPU Timer Error I removed standby Batterie of the remote activator board . IS it possible that missing battery is causing this timer error:Would be great if i can find People who are familar with repairing ALLEN Bradley OSAI 8600 CNC machines. Thanks