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тАО02-08-2016 08:05 AM
тАО02-08-2016 08:05 AM
ML370 G4 won't POST
Hi,
I have 2 ML370 G4 servers that sat for two years doing nothing.
Since I need them again now, I bootet them up yesterday, everything worked fine, and I shut them down again.
Today, I switches them on again, one of them bootet ok, the other one didn't even POST. Internal and external health LEDs on the front panel are green, both power supplies show green, all fans spin up, no processor, PPM, or memory LEDs are on, even the (undocumented) PWRGOOD LED on the mainboard lights green. No POST, no beep, no video.
I tried all the usual remedies (reseated everything, checked and reseated all cable connections, swapped rocessors and PPMs, tried a bare minimum boot, removed and visually checked the system board, changed the battery), nothing helped.
Any ideas?
Further questions:
There are 8 undocumented LEDs an the system board (labeled CR64 to CR71, near the fan 4 connector in the back) which behave drastically different from the same LEDs in the working server. Is there any documentation to be had? The Maintenance and Service Guide doesn't seem to know about them ...
I seem to remember that there was a dipswitch setting to reset the server and/or invoke the reserve boot ROM. Any help?
Thanks in advance,
Axel
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тАО03-14-2016 06:52 AM
тАО03-14-2016 06:52 AM
Re: ML370 G4 won't POST
Still no ideas?
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тАО03-14-2016 10:43 AM
тАО03-14-2016 10:43 AM
Re: ML370 G4 won't POST
The switch settings are in the Maintenance and Service Guide ;) after System Board Components.
Set switch 6 on and power up to clear NVRAM, then reboot again with minimal hardware configuration. Use the parts from the working system if it still fails to boot. Visa versa, you can test the other components in the working system to see if they are still good. Might have been some bad luck and the system board failed.