Acer Aspire 4935 Service Guide - Page 9

Table of Contents Troubleshooting 145 Common Problems 145 Power On Issue 146 No Display Issue 147 Random Loss of BIOS Settings 148 LCD Failure 149 Built-In Keyboard Failure 149 Touchpad Failure 150 Internal Speaker Failure 150 Internal Microphone Failure 152 HDD Not Operating Correctly 153 ODD Failure 154 USB Failure (Rightside 157 Modem Function Failure 157 Wireless Function Failure 158 Bluetooth Function Failure 158 EasyTouch Button Failure 159 Media Board Failure 159 Fingerprint Reader Failure 160 Thermal Unit Failure 160 External Mouse Failure 161 Other Failures 161 Intermittent Problems 162 Undetermined Problems 162 POST Codes Tables 163 Sec 163 Memory 163 BDS & Specific action 164 Each PEIM entry point used in 80_PORT 165 Each Driver entry point used in 80_PORT 165 Each SmmDriver entry point used in 80_PORT 168 Jumper and Connector Locations 169 Top View 169 Bottom View 170 Clearing Password Check and BIOS Recovery 171 Clearing Password Check 171 BIOS Recovery by Crisis Disk 172 FRU (Field Replaceable Unit) List 173 Aspire 4935/4935G Exploded Diagrams 174 Main Module 174 Aspire 4935/4935G FRU List 175 Screw List 182 Model Definition and Configuration 184 Aspire 4935/4935G Series 184 Test Compatible Components 223 Microsoft® Windows® Vista Environment Test 224 Online Support Information 229 Index 231 IX