After "cold "restart of KUKA -KR C2 -standard USA version and software 5.8.2 -the PC did not starts.I've replaced one after other,step by step :HD,MFC control board,power supply,main Mather control board's and processor ,ribbon cables.But nothing helps and the PC stays off.All spare parts are original,from KUKA .
The rest of control cabinet is OK ,because after replacing of the whole computer-everything working.
Please-anybody,any idea what is going on?Where is the problem?
Thank you!
PC unreal problem,please-help me!
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valentine0912 -
July 5, 2013 at 1:04 AM -
Thread is marked as Resolved.
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Did you measure the voltage of computer? maybe one fuse broke in controller and computer wasn't take suitable voltage and not working.
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Is the machine grounded?
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The power supply is OK-after replacing the PC-everithing is OK
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Yes,it is grounded-the problem is in PC.I az sam balgarin:)
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Hm. When the old PC is connected, does the PC fan run? Is it possible to open/close the CD drive using its button?
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From control cabinet is comming 24 volts to power supply of the PC -on his input.But on his outputs-there is not nothing 5 V,no 12 V-and nothing is working-HD,fan,floppy,CD .It may be some connection between main Mather control board and power supply-not running if something wrong in control board.
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Try to run the computer by shorting the power on pins on Motherboard
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Do you have got the description of the pins of the motherboard?
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You will have to write me your motherboard model or try to find in (usually) right bottom corner (near PCI / ISA slots) eight pins which should be labeled Pwr led, hd led, rst, pwr on, you have to short pwr on (or something similar to this), remember to turn on the main switch.
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The motherboard is SY-7VBA 133V.I mentioned that on the back is number 7040602 (the same number is and on other motherboard -might be something important) .The processor is INTEL Celeron tm 733/128/66/1,75 V.About pins you told me-don't remember such a thing ,but on Monday I'll make a double check.Thank you!
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I've heard of this issue, I think a Kuka guy told me when we had a PC issue, although I've never had it happen (it was the PM in the end).
He mentioned two banks of pins and said to just run a screwdriver over then shorting the pairs!
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I've never encountered this problem. Although I believe some PC ATX-type power supplies will not output voltage unless there is a short, or very low resistance, between two of the pins (the 5V pins?). This "short" is generally provided by the motherboard.
However, I don't know what the KUKA PC rack uses for an internal power supply, so I'm not sure this is relevant. Certainly normal ATX power supplies take 120-240VAC input, not the 27VDC that the KUKA PC rack is supplied with. -
Responsible for turning on computer is a BIOS setting called (from my memory) Restore from AC power loss, which turns on the computer automatically after power loss (which is made by main switch), when BIOS is restored to default settings that option is set to false and then the only way to turn on the computer is standard ATX method by shorting the two pins.
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Ah, I think I recall hearing about this. If the BIOS battery on the motherboard died, that could perhaps cause this. So shorting the pins should work, but only if it's the right two pins. And VERY carefully.
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I've come across a lot of times with KRC's motherboards. Mostly KRC2 and KRC1. Even with new ordered MOTHERBOARDS from KUKA that the motherboard wasn't booting from the first time. So this is the first thing i check if i see the PC FAN spinning and PC not starting. I Just use my car key and short the pins, but be carefull KRC2 controllers can have 2 or 3 types of MOTHERBOARDS so the pins are not always in the same place, KRC2 ed2005 FUJITSU Siemens, KRC1 -> SOYO. In some you have BIOS option "restore to KUKA defaults". And if you reset the BIOS or battery, BIOS gets reset-ed to factory defaults and then you have to short this pins, PC won't boot automatically -> these pins are for power ON/OFF switch like on your desktop comp (i used to build my desktop PC's from scratch)
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Hi,everybody!
I found in internet the description of the motherboard and I've solved the problem by reset and power on -via shrtning the pins of J5.
Thank you everybody,best regards!! -
I am not sure if I understand the difficulty correctly....please ask for a second opinion before trying out the following.
You are saying that you can measure 24V going to the input of the PC, but the PC isn't starting. I think I understood from your sayings that you cannot measure 5V, or 12V, etc. on the output of the power supply.
Well, either the power supply is not starting or it is not working.
Look at the outputs of the power supply. You have the classic connectors for the HDDs, the classic connector for the floppy, one square 4-pin connector and lastly a long connector with a lot of pins that goes on the motherboard. Take that out and use a piece of wire to short the green and a black. There is only one green and many blacks. It doesn't matter which one of the blacks you will use...they are all the same (gnd). This is a manual power_on.If the power supply turns on, your problem comes from the mobo. If it stays dead it is probably because the power supply is dead!
This info, technically, is correct, but I am not sure if I understood your problem correctly. Please be careful -
I just had the same problem of PC not powering on.
I already recharged cabinet batteries and replaced motherboard battery (3V).
Now I have been manually powering on the PC by shortcutting the pins EVERY time I turn on my KUKA (beacause otherwise it doesn't)So DannyDJ Do you mean I have to change in the BIOS settings "Restore on AC/Power Loss" for my KUKA PC to power on automatically every time?
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On at least some of the KUKA motherboards, removing the motherboard battery causes some of the BIOS settings to be lost. So my guess would be yes. On at least some of the KUKA BIOSes, once you get to them there is an option for "restore to KUKA settings," which (if available) ought to fix the issue. Otherwise, as Danny said, you'll probably need to go to that specific setting and fix it.
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