Apple iMac G5, 20-inch - Manual (Page 269)

iMac G5, 20-inch Troubleshooting - 45 Symptom Charts
Inserting Discs Issue
1. Is there a disc already in the drive? Refer to Knowledge Base article 106752,
“Macintosh: How to Eject a Disc When Other Options Do Not Work”.
2. Check System Profiler. In System Profiler, in the column on the left, look under
Hardware for a line called S-ATA.
In the section on the right, you should see a header saying “S-ATA” and below it, two
items. The first is your hard drive. The second is your optical drive. Do you see two
items here?
Yes: Problem solved. Run diagnostics and trying inserting a disc again.
No: Remove the back cover and reseat the optical drive. Can you insert a disc now?
– Yes: Problem solved.
– No: Replace the optical drive. If this doesn’t solve the problem, go on to the next
step.
3. Replace the logic board.
Optical disc constantly ejects
1. Disconnect all peripheral devices, especially the mouse in cases where the disc is
constantly ejecting.
2. Try cleaning the disc. If it is dirty or scratched, it may not mount.
3. Try a different disc.
4. Boot from Apple Hardware Test (hold down the “C” key at startup) or boot from the
system install CD (use Startup Manager, hold down the Option key at startup).
5. Perform a clean install with the CD that came with the computer.
6. Reseat the optical drive.
7. Replace the optical drive.
8. Replace the miplane assembly.
Optical media ejects to the desktop
1. Try cleaning the disc. If it is dirty or scratched, it may not mount.
2. Try a different disc.
3. Install the microfoam shim (922-7671) on the inside of the front bezel. Refer to Take
Apart/Optical Drive/Front Bezel/ or Microfoam Shim sections for complete instructions.