Acer Keyboard UI Technical Information PDF herunterladen (Seite 55)

Chapter 2 45

Cleaning BIOS Passwords

To clear the password, perform the following steps:

1. From a DOS prompt, Execute clnpwd.exe

2. Press 1 or 2 to clean the desired password shown on the screen.

The onscreen message determines whether the function is successful or not.

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 195 196

Aspire 4736G/4736Z Series 1
Service Guide 1
Revision History 2
Copyright 3
Disclaimer 3
Conventions 4
Table of Contents 10
System Specifications 11
Environment 13
System Block Diagram 14
Your Acer Notebook tour 15
Closed Front View 16
Left View 17
Right View 18
Rear View 18
Indicators 20
Easy-Launch Buttons 20
Using the Keyboard 22
Windows Keys 23
Hot Keys 24
Special Key 25
Using the System Utilities 26
• OS Shut down: 105°C 28
• H/W Shut down: 96°C 28
• NB10MGE1-512MB-DDR3 28
Chapter 1 23 33
• Samsung LTN140AT01-G01 35
• AUO B140XW01 35
• LG LP140WH1 35
• CMO N140B6 - L02 35
• SONY AS-2007A 37
• Panasonic AS-2007A 37
• Simplo AS-2007A 37
• Sanyo AS-2007A 37
28 Chapter 1 38
System Utilities 39
Information 40
Security 42
Setting a Password 43
Removing a Password 43
Changing a Password 44
Chapter 2 37 47
BIOS Flash Utility 49
DOS Flash Utility 50
Chapter 2 41 51
WinFlash Utility 52
Removing BIOS Passwords: 54
Cleaning BIOS Passwords 55
Miscellaneous Utilities 56
48 Chapter 2 58
Disassembly Requirements 59
Chapter 3 59
General Information 60
Removing the Battery Pack 62
Removing the SD dummy card 63
Removing the Lower Covers 64
Chapter 3 55 65
Removing the WLAN Module 66
Removing the DIMM Modules 67
Chapter 3 59 69
HDD Carrier M3*3 4 69
Main Unit Disassembly Process 72
Removing the Hinge Covers 74
Removing the Switch Cover 75
66 Chapter 3 76
Removing the Keyboard 77
Removing the Speaker Module 78
Chapter 3 69 79
Removing the LCD Module 80
Chapter 3 71 81
72 Chapter 3 82
Chapter 3 73 83
LCD Module M2.5*5 2 83
74 Chapter 3 84
Removing the Upper Base 85
Chapter 3 79 89
Removing the TouchPad Bracket 90
Chapter 3 81 91
Removing the Media Board 92
Chapter 3 83 93
Removing the USB Board 94
Chapter 3 85 95
Removing the Modem Module 96
Removing the Bluetooth Module 97
Removing the Mainboard 98
Chapter 3 89 99
Removing the RJ-11 Port 100
Chapter 3 91 101
Removing the Thermal Module 102
Removing the CPU 104
Removing the LCD Bezel 106
Chapter 3 97 107
Removing the Camera Module 108
Removing the LCD Panel 109
100 Chapter 3 110
Removing the Antennas 112
Removing the MIC Module 113
Replacing the MIC Module 114
Replacing the Antennas 115
Chapter 3 107 117
Replacing the LCD Panel 118
Chapter 3 109 119
Replacing the Camera Module 120
Replacing the LCD Bezel 121
Replacing the CPU 122
Replacing the Thermal Module 123
Replacing the RJ-11 Port 124
Chapter 3 115 125
Replacing the Mainboard 126
Replacing the Bluetooth Board 127
Replacing the Modem Module 127
Replacing the USB Board 128
Replacing the Media Board 129
120 Chapter 3 130
Step Size Quantity Screw Type 130
Media Board M2.5*3 3 130
122 Chapter 3 132
Replacing the Upper Cover 133
Chapter 3 125 135
Replacing the LCD Module 136
Chapter 3 129 139
Replacing the Speaker Module 140
Replacing the Keyboard 141
Replacing the Switch Cover 142
Chapter 3 133 143
Replacing the Hinge Covers 144
Replacing the ODD Module 145
Replacing the DIMM Modules 146
Replacing the WLAN Module 147
Replacing the Lower Covers 147
Replacing the Battery 148
Troubleshooting 149
Power On Issue 150
No Display Issue 151
Random Loss of BIOS Settings 152
LCD Failure 153
Built-In Keyboard Failure 153
Touchpad Failure 154
Internal Speaker Failure 154
Sound Problems 155
Internal Microphone Failure 156
HDD Not Operating Correctly 157
ODD Failure 158
Discs Do Not Play 159
Discs Do Not Burn Properly 159
Playback is Choppy 159
Drive Not Detected 160
Drive Read Failure 160
USB Failure (Rightside) 161
Modem Function Failure 161
Wireless Function Failure 162
Bluetooth Function Failure 162
EasyTouch Button Failure 163
Media Board Failure 163
Fingerprint Reader Failure 164
Thermal Unit Failure 164
External Mouse Failure 165
Other Failures 165
Intermittent Problems 166
Undetermined Problems 166
POST Codes Tables 167
BDS & Specific action: 168
Top View 173
Chapter 5 173
Bottom View 174
Clearing Password Check 175
BIOS Recovery by Crisis Disk 176
Chapter 6 177
Main Module 178
Screw List 185
Appendix A 186
Test Compatible Components 187
Microsoft 188
Vista Environment Test 188
Online Support Information 193
184 Appendix C 194

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