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当前版本: Alex Robinson ,

文本:

I would suggest booting into verbose mode to see if the boot process spits out any recognizable errors that you can search up. When it comes to any seemingly hopeless Mac issue, I go there. The only thing that comes to mind is maybe an EFI-related problem.
 
Coming straight from the Mac Pro 2009 Technician Guide, the description of the CPU Diag LEDs states:
 
[quote]Thequote]
The
8-core and quad-core riser boards include a diagnostic LED for each processor that you
[quote]Thequote]
The
8-core and quad-core riser boards include a diagnostic LED for each processor that you
 
can use in troubleshooting processor issues. The following illustrations show the location of
 
each LED and its associated processor. These error LEDs are normally off. A red illuminated LED
 
indicates the associated processor may be missing or in overtemp state (PROCHOT).[/quote]PROCHOT).
indicates the associated processor may be missing or in overtemp state (PROCHOT).[/quote]PROCHOT).
 
(Page[/quote]
(Page
34 of the Tech Guide posted [document|lcIcsdOKJlKKCxpE|herehttps://www.ifixit.com/Device/Mac_Pro_2009-2012|here])
(Page[/quote]
(Page
34 of the Tech Guide posted [document|lcIcsdOKJlKKCxpE|herehttps://www.ifixit.com/Device/Mac_Pro_2009-2012|here])
 
However, if you wanted to see if its truly a CPU related issue, it suggests:
 
[quote]Determinequote]
Determine
if the error LED follows the processor heatsink; verify the heatsink is physically
[quote]Determinequote]
Determine
if the error LED follows the processor heatsink; verify the heatsink is physically
 
undamaged and properly connected to the processor board, check that adequate thermal
 
grease is applied, and verify the fan is operating. '''''For 8 core riser boards only: determine if the'''''
 
'''''error LED follows the processor by swapping processor A and processor B locations.'''''[/quote]locations.'''''
'''''error LED follows the processor by swapping processor A and processor B locations.'''''[/quote]locations.'''''
 
[/quote]
So, swap the CPUs into each others slots, see if the light changes to the opposite LED. If so, I’d guess it’s the CPU.
 
If all else fails, I’d say maybe something went wrong during the flashing process and the EFI is damaged, in which case you’d have to retry that entire process. But, rule out everything else first. Read through the technician guide to see if you find anything else that could be an issue.
 
Let me know if this helps,
 
Alex

状态:

open

原帖由: Alex Robinson ,

文本:

I would suggest booting into verbose mode to see if the boot process spits out any recognizable errors that you can search up. When it comes to any seemingly hopeless Mac issue, I go there. The only thing that comes to mind is maybe an EFI-related problem.

Coming straight from the Mac Pro 2009 Technician Guide, the description of the CPU Diag LEDs states:

[quote]The 8-core and quad-core riser boards include a diagnostic LED for each processor that you

can use in troubleshooting processor issues. The following illustrations show the location of

each LED and its associated processor. These error LEDs are normally off.  A red illuminated LED

indicates the associated processor may be missing or in overtemp state (PROCHOT).[/quote]

(Page 34 of the Tech Guide posted [document|lcIcsdOKJlKKCxpE|here])

However, if you wanted to see if its truly a CPU related issue, it suggests:

[quote]Determine if the error LED follows the processor heatsink; verify the heatsink is physically

undamaged and properly connected to the processor board, check that adequate thermal

grease is applied, and verify the fan is operating. '''''For 8 core riser boards only: determine if the'''''

'''''error LED follows the processor by swapping processor A and processor B locations.'''''[/quote]

So, swap the CPUs into each others slots, see if the light changes to the opposite LED. If so, I’d guess it’s the CPU.

If all else fails, I’d say maybe something went wrong during the flashing process and the EFI is damaged, in which case you’d have to retry that entire process. But, rule out everything else first. Read through the technician guide to see if you find anything else that could be an issue.

Let me know if this helps,

Alex

状态:

open