Acer Aspire 4540 Acer Aspire 4540 Series Service Guide - Page 9

Table of Contents No Display Issue 139 Random Loss of BIOS Settings 140 LCD Failure 141 Built-In Keyboard Failure 141 Touchpad Failure 142 Internal Speaker Failure 142 Internal Microphone Failure 144 HDD Not Operating Correctly 145 ODD Failure 146 USB Failure (Rightside 149 Modem Function Failure 149 Wireless Function Failure 150 Bluetooth Function Failure 150 EasyTouch Button Failure 151 Media Board Failure 151 Fingerprint Reader Failure 152 Thermal Unit Failure 152 External Mouse Failure 153 Other Failures 153 Intermittent Problems 154 Undetermined Problems 154 POST Codes Tables 155 Sec 155 Memory 155 BDS & Specific action 156 Each PEIM entry point used in 80_PORT 157 Each Driver entry point used in 80_PORT 157 Each SmmDriver entry point used in 80_PORT 160 Jumper and Connector Locations 161 Top View 161 Bottom View 162 LS-4494P Fingerprint Board 163 LS-4495P USB Board 163 Clearing Password Check and BIOS Recovery 163 Clearing Password Check 164 BIOS Recovery by Crisis Disk 165 FRU (Field Replaceable Unit) List 167 Aspire 4540/4240 Exploded Diagrams 168 Main Module 168 Base 169 Aspire 4540/4240 FRU List 170 Screw List 178 Model Definition and Configuration 180 Aspire 4540/4240 Series 180 Test Compatible Components 199 Microsoft® Windows® 7 Environment Test 200 Online Support Information 211 Index 213 IX