Acer Aspire 5742 Service Guide - Page 9

Table of Contents Troubleshooting 159 Common Problems 159 Power On Issue 160 No Display Issue 161 Random Loss of BIOS Settings 162 LCD Failure 163 Internal Keyboard Failure 163 Touch Pad Failure 164 Internal Speaker Failure 164 Microphone Record Failure 166 USB Failure (Right side 167 HDD Not Operating Correctly 168 ODD Failure 169 Wireless Function Failure 172 Bluetooth Function Test Failure 172 2 in 1 card Function Test Failure 173 Thermal Unit Failure 173 External Mouse Failure 174 Cosmetic Failure 174 Other Failures 175 Intermittent Problems 176 Undetermined Problems 176 Post Codes 177 Jumper and Connector Locations 183 Top View 183 Bottom View 186 USB/B Board 189 Power Board 190 CR/B Board 193 ODD Board 194 Clearing Password Check and BIOS Recovery 195 Clearing Password Check 195 Clear CMOS Jumper 195 BIOS Recovery by Crisis Disk 197 FRU (Field Replaceable Unit) List 199 Aspire Exploded Diagrams 200 Main Assembly 200 Lower Cover 202 LCD Assembly 203 LED Assembly 204 Aspire FRU List 205 Screw List 229 Model Definition and Configuration 231 Aspire 5742/5742G 231 Aspire 5742Z/5742ZG 257 Test Compatible Components 273 Online Support Information 279 Index 281 IX