Acer AO722 Service Guide - Page 8

Table of Contents Removing the Mainboard 55 Removing the Speaker Module 56 Removing the Hard Disk Drive Module 58 Removing the DIMM Module 60 Removing the Thermal Module 61 LCD Module Reassembly Procedure 63 Replacing the LCD Brackets and FPC Cable 63 Replacing the LCD Panel 64 Replacing the Mic Board 65 Replacing the Camera Board 65 Replacing the LCD Bezel 66 Main Module Reassembly Procedure 67 Replacing the Thermal Module 67 Replacing the DIMM Module 67 Replacing the Hard Disk Drive Module 68 Replacing the Speaker Module 68 Replacing the Mainboard 70 Replacing the SDD Module 71 Replacing the USB/LED/Power/Card Reader Board 72 Replacing the WLAN Board 73 Replacing the LCM Module 73 Replacing the Upper Cover 75 Replacing the Keyboard 76 Replacing the 3G cover 77 Replacing the Battery 77 Troubleshooting 79 Common Problems 79 Power On Issue 80 No Display Issue 81 Random Loss of BIOS Settings 83 LCD Failure 84 Built-In Keyboard Failure 84 TouchPad Failure 85 Internal Speaker Failure 85 Internal Microphone Failure 87 HDD Not Operating Correctly 88 USB Failure (Rightside 89 Power Button Failure 89 External Mouse Failure 90 Other Failures 90 Intermittent Problems 91 Undetermined Problems 91 Frequently Asked Questions (FAQ 92 POST Code Reference Tables 102 Sec 102 Memory 102 BDS & Specific action 103 Each PEIM entry point used in 80_PORT 105 Each Driver entry point used in 80_PORT 105 Each SmmDriver entry point used in 80_PORT 108 Jumper and Connector Locations 111 Top View 111 Bottom View 112 VIII