Gacked from http://resale.headgap.com/bobsmactips.html#cuda
PUSHING THE CUDA SWITCH:
The CUDA or motherboard reset switch is a last resort. If your computer
doesn't come up at all before replacing the power supply usually
pressing the switch will restore life to your dead computer. If you
don't hear a chime after that then it may be Power Supply time. If your
computer fails to come up after a processor swap, overclock, or ram
install then it may be time to try the CUDA switch. The CUDA switch
looks like a little gray (sometimes red) doorbell button. It is indeed
a momentary switch like a doorbell button. This is always done with the
POWER OFF!
Where is the CUDA Switch?
On PCI based Macs like the 75, 76, 73, 85, 86, 95, 9600's etc. it is
directly under the back of the processor. You may have to pull the
processor to see it.
On Beige G3's it is directly left of the PCI slots near the edge of the
motherboard.
On Blue and Whites they are left of the processor and there are two.
One really isn't a CUDA it is a reset. The CUDA is on the left as you
are facing the front of the computer.
ON G4 Sawtooth systems it in in the left rear of the motherboard near
the battery and is called a PMU switch. You should only hit this button
once. If you are still having trouble unpower the system and let it sit
a while.
Hold it down and count to 5, button up things and push the restart
while crossing your fingers. If you are on a 6100, 7100, 8100 etc. you
are out of luck. There is no CUDA switch on these models. I remove the
battery and unplug the power supply connectors from the motherboard and
let the thing set for 10-15 minutes to reset the motherboard. You may
have to resort to this on your Blue and White or G4 at some point and
it works on other units. Doesn't make sense to me but it works.
Best Regards,
Harry (*^_^*)
On Jun 14, 2005, at 3:52 PM, Johns Maillist wrote:
On Jun 14, 2005, at 11:38 AM, Harry Freeman wrote:
This should be all that you need.
Use the Apple System Profiler, located in the Apple Menu, to help
Determine
which logic board revision you have. Open Apple System Profiler,
click the
System Profile tab within the window, and then look at the Production
Information section. Compare it to the table below to determine which
revision
of the logic board is in your Powe Macintosh G3 (platinum) computer.
ROM Versions Logic Board Revision
$77D,40F2 Revision 1
$77D,45F1 Revision 2
$77D,45F2 Revision 3
Note: All Power Mocintosh G3 All-in-one computers and (platinum) Power
Macintosh G3 300Mhz and 333Mhz Desktop/Minitower computers have
revision
2 or newer logic boards.
Best Regards,
Harry (*^_^*)
----------------------------------------------------
On Jun 14, 2005, at 7:20 AM, nhc_design2004 wrote:
Does that mean they do not have a cuda switch?
John
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