26 - iMac G5, 17-inch Troubleshooting Symptom Charts
6. Remove the back cover to access the diagnostic LEDs on the logic board.
7. With the back cover removed, locate the diagnostic LEDs 1 through 4 above the large
white arrow on the main logic board.
8. Plug the power cord into the iMac G5 and into a known good AC outlet. LED #1 should
come on if your computer has been starting up properly. If LED #1 is off, see iMac G5:
Troubleshooting: No Power for further troubleshooting information.
9. Turn the computer on by using the internal power button. Press the small, metal
button under the fan cover as shown.