Specifications

USB Printing Problems
iMac cannot print to attached known-good printer.
1. Verify that the printer is Macintosh compatible.
2. Verify that you have setup the printer correctly in OS X.
3. Reinstall the printer driver.
4. Switch the printer to another USB port.
5. Replace the printer interface cable.
6. System software is corrupted. Reinstall the system software.
7. Replace the logic board.
28 - iMac (Flat Panel) Troubleshooting
USB Printing Problems Symptom Charts