Acer Aspire 5251 Service Guide - Page 8

Table of Contents Removing the USB Board 73 Removing the Bluetooth Board 75 Removing the Mainboard 76 Removing the Thermal Module 81 Removing the CPU 83 LCD Module Disassembly Process 84 LCD Module Disassembly Flowchart 84 Removing the LCD Assembly 85 Removing the LCD Bezel 88 Removing the Camera Module 89 Removing the LCD Panel 90 Removing the LCD Brackets and LVDS Cable 91 Removing the Microphone Cable 94 Removing the Antennas 96 LCD Module Reassembly Procedure 98 Replacing the Antennas 98 Replacing the Microphone Cable 100 Replacing the LCD Brackets and LVDS Cable 101 Replacing the LCD Panel 103 Replacing the Camera Module 104 Replacing the LCD Bezel 105 Replacing the LCD Assembly 106 Main Module Reassembly Procedure 109 Replacing the CPU 109 Replacing the Thermal Module 110 Replacing the Mainboard 112 Replacing the Bluetooth Board 115 Replacing the USB Board 116 Replacing the Card Reader Board 118 Replacing the TouchPad Bracket 119 Replacing the Power Board 121 Replacing the Right Speaker Module 122 Replacing the Left Speaker Module 123 Replacing the Upper Cover 124 Replacing the Keyboard 127 Replacing the Hard Disk Drive Module 128 Replacing the WLAN Module 129 Replacing the DIMM Modules 130 Replacing the 3G Cover 131 Replacing the Logic Lower Door 132 Replacing the ODD Module 133 Replacing the SD Dummy Card 134 Replacing the Battery 135 Troubleshooting 137 Common Problems 137 Power On Issue 138 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 HDD Not Operating Correctly 144 ODD Failure 145 VIII