Acer Extensa 5420G TravelMate 5520G Service Guide - Page 8

Table of Contents External Modules Disassembly Flowchart 59 Removing the Battery Pack 60 Removing the SD dummy card 60 Removing the PC and ExpressCard dummy cards 61 Removing the Lower Cover 62 Removing the DIMM 63 Removing the WLAN Board Modules 64 Removing the Hard Disk Drive Module 65 Removing the Optical Drive Module 66 Main Unit Disassembly Process 69 Main Unit Disassembly Flowchart 69 Removing the Modem Board 70 Removing the Heatsink Fan Module 70 Removing the CPU and VGA Heatsink Module 71 Removing the CPU 73 Removing the VGA board (for Discrete model only 74 Removing the Middle Cover and the Power Board 75 Removing the Keyboard 77 Removing the LCD Module 79 Separating the Upper Case from the Lower Case 82 Removing the Launch Board 85 Removing theTouch Pad Board Module 86 Removing the main board 89 Removing the Speaker Modules 91 Removing the USB Board 92 LCD Module Disassembly Process 94 LCD Module Disassembly Flowchart 94 Main Screw List 94 Removing the LCD Bezel 95 Removing the LCD module with the Brackets 96 Removing the Inverter Board and FPC Cable 97 Removing the LCD Brackets 98 Removing the Left and Right Hinge 98 Removing the Antennas 99 Removing the Internal Microphone and Web Camera 100 Troubleshooting 103 System Check Procedures 104 External Diskette Drive Check 104 External CD-ROM Drive Check 104 Keyboard or Auxiliary Input Device Check 104 Memory check 105 Power System Check 105 Touchpad Check 107 Power-On Self-Test (POST) Error Message 108 Index of Error Messages 109 Phoenix BIOS Beep Codes 112 Index of Symptom-to-FRU Error Message 117 Intermittent Problems 121 Undetermined Problems 122 Jumper and Connector Locations 123 Top View 123 Bottom View 124 VIII