Specifications

Troubleshooting Adjusting the Display after Replacing the CRT/Video Board* - 15
convergence as described in the previous section.
• If you hold down the option key and click Factory Settings,
it might be necessary to perform a minor convergence
adjustment using Monitors & Sound control panel.
4 If the Recalibration fails, a warning message will appear.
Click OK and click Recalibrate again.
5 If the recalibration fails again, use the duplicated file to
upload the parameter settings. (Hold down the option key and
drag the Parameter Settings 850 file out of the Parameter
File Backup folder; then follow the procedure under “Upload
Parameter Settings.”) Adjust the display. If the
recalibration fails again, click Recalibrate.
Note: These multiple recalibration attempts might seem
excessive, however lab tests have confirmed a high success
rate at saving the display and preventing needless
replacements.
6 If the recalibration fails again (after the fourth attempt),
call Apple Technical Support. (In the US, call 1-800-919-
2775, option 3.)