Acer 4315 manual Troubleshooting, System Block Diagram and Connector Locations

External Module Disassembly Process	48
External Modules Disassembly Flowchart	48
Removing the Battery Pack	49
Removing the Express Dummy Card	49
Removing the Lower Cover	50
Removing the DIMM	51
Removing the WLAN Board Module	52
Removing the Hard Disk Drive Module	53
Removing the Optical Drive Module	54
Main Unit Disassembly Process	56
Main Unit Disassembly Flowchart	56
Removing the CPU Heatsink Module	57
Removing the CPU	58
Removing the Keyboard	59
Removing the Middle Cover	60
Removing the LCD Module	61
Separating the Upper Case from the Lower Case	63
Removing the Speaker Modules	65
Removing the Launch Board Bracket	66
Removing the Touchpad Board Module	67
Removing the Audio Board	68
Removing the USB Board	70
Removing the Mainboard	71
Removing the Modem Board	72
Removing the RTC Battery	74
LCD Module Disassembly Process	76
LCD Module Disassembly Flowchart	76
Removing the LCD Bezel	77
Removing the Camera Board	78
Removing the Inverter Board	79
Removing the LCD with Brackets	80
Removing the LCD Brackets	83
Removing the LCD Module Hinges	83
Removing the Antenna	84
Removing the Microphone	85
Troubleshooting	87
System Check Procedures	88
External CD/DVD-ROM Drive Check	88
Keyboard or Auxiliary Input Device Check	88
Memory Check	88
Power System Check	89
Touchpad Check	90
Power-On Self-Test (POST) Error Message	91
Index of Error Messages	92
Phoenix BIOS Beep Codes	94
Index of Symptom-to-FRU Error Message	98
Intermittent Problems	102
Undetermined Problems	103
System Block Diagram and Connector Locations	105
System Block Diagram	105
Board Layout	106
Top View	106
Bottom View	107

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