Troubleshooting Display Setting Restoration/Restore the EEPROM Information -
After the new microprocessor board is installed, the new EEPROM will have default settings that allow you to read the display, but with difficulty. When the settings from the old EEPROM are transferred to the new EEPROM, the display should be clear and the last color temperature mode chosen restored.
Restore the EEPROM Information
To download the saved adjustment information to the new EEPROM,
1 Start MacTest Pro.
2 Choose “Apple Multiple Scan 20 Display.”
3 Select “Test.”
4 Click “Write File.”