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Chapter 3 Machine Disassembly and Replacement 47
Disassembly Requirements 47
General Information 48
Pre-disassembly Instructions 48
Disassembly Process 49
External Module Disassembly Process 50
External Modules Disassembly Flowchart 50
Removing the Battery Pack 51
Removing the SD Dummy Card 51
Removing the Express Dummy Card 52
Removing the Lower Cover 53
Removing the DIMM 53
Removing the WLAN Board Modules 54
Removing the Hard Disk Drive Module 55
Removing the Optical Drive Module 57
Main Unit Disassembly Process 59
Main Unit Disassembly Flowchart 59
Removing the Fan Module 60
Removing the CPU Heatsink Module 61
Removing the CPU 62
Removing the Middle Cover 63
Removing the Keyboard 64
Removing the LCD Module 67
Separating the Upper Case from the Lower Case 70
Removing the Touchpad Board Module 71
Removing the Fingerprint Board 73
Removing the LED Indicators Board 74
Remove the Daughter Board 75
Removing the Mainboard 77
Removing the Modem Board 78
Removing the Bluetooth Board 79
Removing the Speaker Modules 80
LCD Module Disassembly Process 82
LCD Module Disassembly Flowchart 82
Removing the LCD Bezel 83
Removing the Inverter Board 84
Removing the LCD with Brackets 85
Removing the LCD Brackets 87
Removing the LCD Module Hinges 89
Removing the Antennas 90
Removing the Microphone 91
Chapter 4 Troubleshooting 93
System Check Procedures 94
External CD/DVD-ROM Drive Check 94
Keyboard or Auxiliary Input Device Check 94
Memory Check 94
Power System Check 95
Touchpad Check 96
Power-On Self-Test (POST) Error Message 97
Index of Error Messages 98
Phoenix BIOS Beep Codes 100
Index of Symptom-to-FRU Error Message 104
Intermittent Problems 108
Undetermined Problems 109
SG_TM4720_4320_Book.book Page viii Friday, April 20, 2007 11 14 AM
