Specifications
iMac G5 (17-inch iSight) Troubleshooting — Symptom Charts 155
Close the System Preferences. Try typing a few characters. Did is solve the problem?
Yes: Problem solved.
No: Replace the keyboard.
The USB port on my keyboard doesn’t work.
Unplug all devises from your keyboard.
Plug your Apple mouse into the left USB port on your keyboard. Does your mouse work
when it’s plugged into this port?
Yes: Now plug the mouse into the right port. Does it work?
Yes: Try a known good keyboard.
No: Try a known good mouse to rule out the mouse. Then go to step 3.
No: Try a dierent mouse or keyboard.
Now unplug the keyboard from the USB port on the back of the iMac, and plug the mouse
into the port the keyboard had been in. Does the mouse work now?
Yes: Replace the keyboard?
No: It appears that your USB port isn’t functioning properly. Go on to step 4.
Replace the logic board.
Error Beep(s)
Computer beeps at startup.
Check that the memory DIMMs are iMac G5 (17-inch iSight) compliant. iMac G5 (17-inch
iSight) computers work with memory modules (DIMMs) that meet all of these criteria: •
• DDR2 SDRAM (Double Data Rate 2, Synchronous Dynamic Random Access Memory)
• 533 MHz, PC2-4200 compliant (also referred to as DDR2 533)
• 184-pin, 2.5V
• unbuered and unregistered
There is one RAM slot. The maximum amount of RAM you can install is 2.5 GB. You can use
RAM module sizes of 512 MB, 1 GB, and 2 GB.
DIMMs with any of the following features are not supported in the iMac G5 (iSight)
computers: registers or buers, PLLs, ECC, parity, or EDO RAM.
Reseat the memory into the slot.
Replace the memory.
Replace the logic board.
6.
1.
2.
3.
4.
1.
2.
3.
4.