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iMac G5 (20-inch iSight) Troubleshooting — Symptom Charts 174
Keyboard
None of the keys on my keyboard work.
Unplug all devices from your computer, including your mouse and keyboard as well as 1.
printer, scanner, external hard drives, and hubs. (Warning: Some devices may require you
to perform steps before it is safe to unplug them, e.g, external storage devices.) Be sure to
unplug your hub, if you have one.
Plug your keyboard into the back of your computer rmly and securely. Plug your mouse 2.
into the back of your computer rmly and securely. Take special care to make sure the
connector is completely in the socket. Go on to step 3.
oes your keyboard work now? 3.
Yes: Problem solved.
No: Unplug your keyboard and plug it into another USB slot on the back of your iMac Does
it work now?
Yes: Replace the logic board.
No: Unplug your keyboard and plug your mouse into the port the keyboard just
occupied. Go on to step 4.
Does your mouse work now? 4.
Yes: Replace the keyboard.
No: Replace the logic board.
Certain keys don’t work.
Unplug all devices from your computer, including your mouse and keyboard as well as 1.
printer, scanner, external hard drives, and hubs. (Warning: Some devices may require you
to perform steps before it is safe to unplug them, e.g, external storage devices.) Be sure to
unplug your hub, if you have one.
Plug your keyboard into the back of your computer rmly and securely. Plug your mouse 2.
into the back of your computer rmly and securely. Take special care to make sure the
connector is completely in the socket. (Note that USB plugs can only work one way up, and if
you try them upside-down they won’t slide together properly.) Go on to the next step.
Does your keyboard work now? 3.
Yes: Problem solved.
No: Unplug your keyboard and plug it into another USB slot on the back of your iMac Does it
work now?
Yes: Replace the logic board.
No: Unplug your keyboard and plug your mouse into the port the keyboard just