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Acer Aspire 4750Z Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 149

Index, Keyboard or Auxiliary Input Device Check

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A AFLASH Utility 30 antennas removing 74 Audio 15 B back cover removing 38 battery pack removing 36 BIOS 11 vendor 11 Version 11 BIOS Recovery 96 BIOS Recovery Boot Block 97 BIOS Recovery by Crisis Disk 97 steps 97 BIOS Recovery Hotkey 97 BIOS Utility 19-30 Navigating 20 System Security 29 brightness hotkeys 6 C Clearing BIOS Password steps 96 Clearing Password 96 CPU removing 60 CPU Fan True Value Table 11 Crisis Disk creating 97 Crisis Recovery Disk 30 D DIMM module removing 42 display hotkeys 6 E External CD-ROM Drive Check 78 External Module Disassembly Index Flowchart 35 F Flash Utility 30 front view 7 FRU (Field Replaceable Unit) List 99 H Hard disk 13 HDD 13 HDD1 module removing 39 Hibernation mode hotkey 6 hotkeys 6 HW Gap position 96 I Intermittent Problems 92 K Keyboard 16 keyboard hotkeys 6 Keyboard or Auxiliary Input Device Check 78 L LCD bezel removing 65 LCD Brackets removing 70 LCD Module Disassembly Flowchart 64 LCD with the brackets removing 66 left speaker removing 54 left view 7 Locations connectors 93 M Main Screw List 34 Main Unit Disassembly Flowchart 43 141

Section	Page
System Specifications	9
Features	9
System Block Diagram	12
Your Acer Notebook tour	13
Top view	13
Hotkeys	14
Closed front view	15
Rear view	15
Left view	15
Right view	17
Base view	17
Hardware Specifications and Configurations	19
System Utilities	27
BIOS Setup Utility	27
Navigating the BIOS Utility	28
Information	29
Main	30
Security	32
Boot	36
Exit	37
BIOS Flash Utility	38
Remove HDD Password	39
Machine Disassembly and Replacement	41
Disassembly Requirements	41
General Information	42
Pre-disassembly Instructions	42
Disassembly Process	42
External Module Disassembly Process	43
External Modules Disassembly Flowchart	43
Removing the Battery Pack	44
Removing the Optical Drive Module	45
Removing the Back Cover	46
Removing the Hard Disk Drive Module	47
Removing the Wireless LAN Card	48
Removing the DIMM Module	50
Main Unit Disassembly Process	51
Main Unit Disassembly Flowchart	51
Removing the Keyboard	52
Separating the Upper Case from the Lower Case	53
Removing the Touchpad Boards	55
Removing the Left and Right Speakers	57
Removing the Power Button Board	59
Removing the Bluetooth Module	60
Removing the RTC Battery	61
Removing the USB Board	62
Removing the Main Board	63
Removing the Heatsink Module	66
Removing the CPU	68
Removing the LCD Module	69
LCD Module Disassembly Process	72
LCD Module Disassembly Flowchart	72
Removing the LCD Bezel	73
Removing the LCD panel with the Brackets	74
Removing the LCD Brackets	78
Removing the FPC Cable	79
Removing the Web Camera	80
Removing the Microphone	82
Removing the Antennas	82
Troubleshooting	85
System Check Procedures	86
External Diskette Drive Check	86
External Optical Disk Drive Check	86
Keyboard or Auxiliary Input Device Check	86
Memory Check	87
Power System Check	87
Touchpad Check	88
Power-On Self-Test (POST) Error Message	88
Index of Error Messages	89
Phoenix BIOS Beep Codes	93
Index of Symptom-to-FRU Error Message	97
Intermittent Problems	100
Undetermined Problems	100
Connector Locations	101
Main Board	101
Clearing Password Check and BIOS Recovery	104
Clearing Password Check	104
BIOS Recovery by Crisis Disk	105
FRU (Field Replaceable Unit) List	107
Exploded Diagram	108
Model Definition and Configuration	121
Aspire 4750/4750G Series	122
Hardware Device Tests	144
Online Support Information	147

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