Acer Aspire 4250 Acer Aspire 4250 Notebook Service Manual - Page 8

Camera Module Removal 3-38 Camera Module Installation 3-39 LCD Panel Removal 3-40 LCD Panel Installation 3-41 LCD Bracket Removal 3-42 LCD Bracket Installation 3-42 LVDS Cable Removal 3-43 LVDS Cable Installation 3-44 CHAPTER 4 Troubleshooting Introduction 4-3 General Information 4-3 Power On Issues 4-4 No Display Issues 4-5 LCD Picture Failure 4-8 Internal Keyboard Failure 4-9 Touchpad Failure 4-10 Internal Speaker Failure 4-11 Internal Microphone Failure 4-13 USB Failure 4-14 Other Functions Failure 4-15 Intermittent Problems 4-16 Undetermined Problems 4-16 Post Codes 4-17 CHAPTER 5 Jumper and Connector Locations Mainboard Jumper and Connector Locations 5-3 Clearing Password Check and BIOS Recovery 5-5 Clearing Password Check 5-5 Clear CMOS Jumper 5-6 BIOS Recovery by Crisis Disk 5-7 viii