Acer 721TX Service Guide - Page 105

Utility Program Diskette Setting LCD Panel ID There is an EEPROM in the inverter which stores its supported LCD type ID code. If you replace an LCD with one of a different brand or use a new inverter, the ID information in the inverter EEPROM should be updated. Follow the steps below to see the LCD Panel ID: 1. Follow the instructions on-screen to read current or to set new LCD Panel ID code. Note: When you set a new LCD Panel ID and the new LCD is not yet enabled (to function), connect an external CRT to see the program execution process. Note: Make sure the new ID code you choose corresponds with the LCD brand and type. If you write a wrong ID into the inverter, just reboot and re-execute the program and input the correct ID code. 2. Restart the computer - the new LCD should work normally. Note: If LCD cannot display after changing the ID code, make sure you write the correct ID code, or try reseating the LCD FPC cable connectors. Setting Thermal Sensor Utility The system is equipped with sensors to protect against system overheating. By setting System and processor thermal thresholds, the system can turn on the cooling fan or shut down automatically when temperatures reach the defined threshold parameters. Chapter 4 97