Acer TravelMate 7720 TravelMate 7720 / 7320 and Extensa 7620 Service Guide - 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 77 Removing the VGA board (for Discrete model only 77 Removing the Middle Cover and the Power Board 78 Removing the Keyboard 80 Removing the LCD Module 81 Separating the Upper Case from the Lower Case 84 Removing the Launch Board 86 Removing the Touch Pad Board Module 87 Removing the Main Board 90 Removing the ODD Board Module 92 Removing the Speaker Modules 93 Removing the USB Board 94 LCD Module Disassembly Process 96 LCD Module Disassembly Flowchart 96 Main Screw List 96 Removing the LCD Bezel 97 Removing the LCD module with the Brackets 98 Removing the Inverter Board and FPC Cable 99 Removing the LCD Brackets 100 Removing the Left and Right Hinge 101 Removing the Antennas 101 Removing the Internal Microphone and Web Camera 102 Troubleshooting 105 System Check Procedures 106 External Diskette Drive Check 106 External CD-ROM Drive Check 106 Keyboard or Auxiliary Input Device Check 106 Memory check 107 Power System Check 107 Touchpad Check 109 Power-On Self-Test (POST) Error Message 110 Index of Error Messages 111 Phoenix BIOS Beep Codes 114 Index of Symptom-to-FRU Error Message 119 Intermittent Problems 123 Undetermined Problems 124 Top View 125 VIII