Problem- 0T Power UP message (failure?)

[John3]

Hi,

On power up this morning, my Fanuc 0T control does not complete its power up procecess.

The CRT monitor shows: 0615-11 in very large characters in the middle of its screen and below that it shows: PMC: XB7A-06 NOT READY.

Yesterday the machine powered up fine and ran fine. Does anybody have any suggestions on what this means and how I can begin troubleshooting the cause?

Thanks,

John

[hrh]

See if you can view the PROGRAM or POSITION screen by pressing the buttons on the MDI panel.

If you can view these screens check the following Diagnostics (Press PARAM / DGNS button twice):
21 = 00110000 is a usual condition for emergency stop input and feedhold ok.
121 same as above
(the other bits may be any condition as long as bit 4 is "1")

Also check the machine side +24V power supply and the fuses or non-fuse breakers.
Check overloads and any error lamps on the operators panel.

If you cannot select and view ANY screens then it is likely a control PCB failure similar to Watchdog alarm or some other atomic animal.