Acer Aspire 4752 Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 8

CHAPTER 4 Trouble Shooting Introduction 4-3 General Information 4-3 Power On Issues 4-4 No Display Issues 4-5 LCD Failure 4-7 Keyboard Failure 4-8 Touchpad Failure 4-9 Internal Speaker Failure 4-10 Microphone Failure 4-12 USB Failure 4-13 WLAN Failure 4-14 Bluetooth Failure 4-15 Card Reader Failure 4-16 Thermal Unit Failure 4-17 Other Functions Failure 4-18 Intermittent Problems 4-19 Undetermined Problems 4-19 Error Codes 4-20 BIOS Beep Codes 4-21 POST Codes 4-26 Component Codes 4-26 Progress Codes 4-31 CHAPTER 5 Jumper & Connector Locations Mainboard Layout 5-3 Clearing Password Check and BIOS Recovery 5-6 Clearing the BIOS Passwords 5-6 Performing a BIOS Recovery 5-7 viii