9/29/2010 3:34 PM | |
Posts: 2 Rating:
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I have PCU50 with Win NT 4.0.There was building main power supply failure during machining. After restart the 840D hung up after BIOS screen and before showing hidden SIEMENS service menu. All could be seen on screen was blinking sign _ in left top corner. There was no message like "OS not found", "OS failure" etc. I've checked the BIOS settings - the system didn't recognize the HD. I've replaced HD with new one with the latest image which should work without any problems but it doesn't - black screen with _ I've created image from machine HD, then checked the HD with typical HD recovery spftware - MBR ok, data ok, no errors, no bad sectors - HD is OK. During the time I was checking the HD machine was powered off for about 3h. Next I put new HD from other machine equipped with the same control and this time I could see the message "OS not found". I've opened BIOS settings - system has recognized the HD. Again I exchanged HD to the one which was working before power failure and the machine started like there was no problem at all. Problem solved but I still don't know what exactly has helped? Some say don't believe in miracles but count on them ;) but still it would be good to know. Maybe it was the problem with PCU50 HD controller? If you have ever experienced similar problems please let me know. Greetings Splitted from Black screen on Sinumerik 840D, PCU50, Win4.0NT - probably PCU50 mainboard is damaged. |
Last edited by: piotrcnc at: 10/4/2010 2:56 PMLast edited by: piotrcnc at: 10/1/2010 6:08 PMLast edited by: O_Moderator at: 9/30/2010 9:48 AMnew subject after splitting |
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10/1/2010 6:16 PM | |
Posts: 2 Rating:
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Thanks for reply Ekalavya. I'm sure power and HD data cables were fine. I was not precise enough - I've corrected the previous post. Regards |
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