Acer TravelMate 7520 Service Guide for TravelMate 7520, 7520G, 7220, Extensa 7 - Page 8

Table of Contents External Modules Disassembly Flowchart 61 Removing the Battery Pack 62 Removing the SD dummy card 63 Removing the PC and ExpressCard dummy cards 63 Removing the Lower Cover 64 Removing the Secondary HDD Cover 65 Removing the Secondary HDD Bracket and Connector 66 Removing the DIMM 68 Removing the WLAN Board Modules 68 Removing the Hard Disk Drive Module 69 Removing the Optical Drive Module 70 Main Unit Disassembly Process 73 Main Unit Disassembly Flowchart 73 Removing the Modem Board 73 Removing the Heatsink Fan Module 74 Removing the CPU and VGA Heatsink Module 75 Removing the CPU 76 Removing the VGA board (for Discrete model only 77 Removing the Middle Cover and the Power Board 78 Removing the Keyboard 79 Removing the LCD Module 81 Separating the Upper Case from the Lower Case 83 Removing the Launch Board 85 Removing theTouch Pad Board Module 86 Removing the Main Board 89 Removing the ODD Board Module 91 Removing the Speaker Modules 92 Removing the USB Board 93 LCD Module Disassembly Process 95 LCD Module Disassembly Flowchart 95 Main Screw List 95 Removing the LCD Bezel 96 Removing the LCD module with the Brackets 97 Removing the Inverter Board and FPC Cable 98 Removing the LCD Brackets 99 Removing the Left and Right Hinge 100 Removing the Antennas 100 Removing the Internal Microphone and Web Camera 101 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 2