VIIITable of ContentsRemoving the LED Board 49Removing the Fingerprint and Touchpad Boards 50Removing the Card Reader Board 52Removing the Bluetooth Board 53Removing the System Board 54Removing the Modem Board 55Removing the Speakers 55LCD Module Disassembly 57LCD Module Disassembly Flowchart 57Removing the LCD Bezel 58Removing the Inverter Board 59Removing the LCD Module Hinges 60Removing the LCD Panel 60Removing the LCD-CCD Cable 61Removing the LCD Panel Brackets 62Removing the Internal Microphone and the CCD Board 63Removing the WLAN Antennas 64Hardware Diagnostic Procedure 65System Troubleshooting 65Chapter 4 65System Check Procedures 66External Diskette Drive Check 66External CD-ROM Drive Check 66Keyboard or Auxiliary Input Device Check 66Memory Check 67Power System Check 67Touchpad Check 68POST Error Indicators 69POST Error Message 69POST Beep Codes 72Index of Symptom-to-FRU Error Message 77Intermittent Problems 80Undetermined Problems 81Online Support Information 82System Block Diagram 83System Block Diagram and Board Layout 83Chapter 5 8383System Board Layout 84Top View 84Bottom View 85System Switch 86FRU (Field Replaceable Unit) List 87Chapter 6 87Aspire 5910 Exploded Diagram 88TravelMate 4520 FRU List 89TravelMate 4520 Series Model Configurations 107Appendix A 107
