Hi,
I'm Marcelus, 30 years old from São Paulo City, Brazil*, owner of a PowerMac
7600/132 CPU with 2GB HD/16MB RAM running Mac OS 8.1.
Well, this CPU seems to have a problem: it doesn't turn on or shut down
properly. That is, I can't turn the 7600 on using the power key on the
keyboard or even pressing the power button on the CPU; the 7600 only turns
on directly when I plug the AC power cord on the CPU.
The wire from the keyboard to the computer has an ADB plug on the
end. That plug or the socket it plugs into may be dirty not giving a
good connection. Some electronic contact cleaner or rubbing alcohol
and an old toothbrush should remove any dirt or film, preventing
electrical contact. with repeated application.
If the machine does not start or shutdown after this operation look
for a damaged ADB cable or damage to the power button.
My power button takes a firm straight down push to activate properly..
Can you borrow another keyboard to try?
But when the power cord is connected and the 7600 is on... I can't shut it
down or make it sleep properly. When I choose "Sleep" or "Shut Down" on
Finder's menu, the OS close all windows and turn the screen off -- but I can
hear the CPU power source and fan still functioning, as it was waiting for
me to press some button to turn the computer off (as the same way LCs and
Qaudras 610 do) -- but this button doesn't exist!
What about the button on the front of the machine on the lower left?
It sounds as if your machine is not responding to the Power button on
the keyboard.
When the screen goes dark and you still hear the fan running the
machine is in " sleep " mode.
So, to turn the computer off, I have to literally pull the AC power cord
from the CPU.
The most bizarre thing is that when I boot the 7600 using a Mac OS 8 Install
CD, it's possible to make the Mac sleep and "wake up" properly, although
Shut Down still doesn't work as expected.
Well... does anybody here has a clue about what kind of problem is affecting
my 7600 to behave this way? What would be the remedy?
______________________________
Try zapping the PRAM.
If there are still problems after that trash the Finder prefs. And
rebuild the desktop.
Beyond that do you have any other software that may not be shutting
down? Something in the shutdown folder?
Good luck Marcelus,
--
Adrian
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