beautypg.com

Apple iMac G5, 20-inch User Manual

Page 260

background image

36 - iMac G5, 20-inch Troubleshooting

Symptom Charts

6.

Remove the back cover to access the diagnostic LEDs on the main logic board.

7.

With the back cover removed, locate the diagnostic LEDs 1 through 4 above the large

white arrow on the 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 pressing the internal power button. Press the small, metal

button under the fan cover as shown.