Acer MP-340 20GB Technical Information Page 22
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- Table of contents
- TROUBLESHOOTING
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14 Chapter 1
Embedded Numeric Keypad
The embedded numeric keypad functions like a desktop numeric keypad. It is indicated by small characters
located on the upper right corner of the keycaps. To simplify the keyboard legend, cursor-control key symbols
are not printed on the keys.
Desired Access Num Lock On Num Lock Off
Number keys on embedded
keypad
Type numbers in a normal
manner.
Cursor-control keys on
embedded keypad
Hold j while using
cursor-control keys.
Hold Fn while using cursor-
control keys.
Main keyboard keys Hold Fn while typing letters
on embedded keypad.
Type the letters in a normal
manner.
SG_TM420_Ch1.fm Page 14 Thursday, September 26, 2002 9:23 AM
- Acer TravelMate 420 Series 1
- Revision History 2
- Copyright 3
- Disclaimer 3
- Conventions 4
- Table of Contents 7
- System Specifications 9
- Expansion 10
- Keyboard and Pointing Device 10
- I/O Ports 10
- System Block Diagram 11
- Board Layout 12
- Outlook View 14
- Chapter 1 7 15
- 8 Chapter 1 16
- Chapter 1 9 17
- 10 Chapter 1 18
- Chapter 1 11 19
- Indicators 20
- Lock Keys 21
- Embedded Numeric Keypad 22
- Windows Keys 23
- Hot Keys 24
- Chapter 1 17 25
- The Euro Symbol 26
- Launch Keys 27
- E-Mail Detection 28
- Touchpad 29
- 22 Chapter 1 30
- Chapter 1 25 33
- DVD-ROM Interface 33
- 26 Chapter 1 34
- Chapter 1 31 39
- Electrical specification 39
- °C (storage package) 41
- 34 Chapter 1 42
- Mechanical Specification 42
- Memory Address Map 42
- I/O Address Map 42
- Environmental Requirements 42
- Chapter 1 35 43
- 36 Chapter 1 44
- IRQ Assignment Map 44
- Chapter 1 37 45
- DMA Channel Assignment 45
- 38 Chapter 1 46
- System Utilities 47
- Chapter 2 41 49
- Parameter Description 50
- Chapter 2 43 51
- Setting a Password 55
- Removing a Password 56
- Changing a Password 56
- 50 Chapter 2 58
- Chapter 2 51 59
- BIOS Flash Utility 60
- System Diagnostic Diskette 60
- Running Diagnostics Program 62
- Chapter 2 59 67
- 60 Chapter 2 68
- Chapter 3 69
- General Information 70
- Removing the Battery Pack 73
- Removing the Optical Module 74
- Removing the HDD module 74
- Removing the Memory 74
- Removing the Keyboard 75
- Disassembling the Main Unit 77
- Disassembling the LCD Module 82
- Disassembling the HDD Module 83
- 76 Chapter 3 84
- 5. Remove the ODD PCB board 84
- Troubleshooting 85
- System Check Procedures 86
- Memory Check 87
- Power System Check 87
- Check the Power Adapter 88
- Touchpad Check 89
- Display Check 89
- Sound Check 90
- Index of Error Messages 92
- Chapter 4 85 93
- Error Message List 93
- 86 Chapter 4 94
- LCD-Related Symptoms 94
- Indicator-Related Symptoms 94
- Power-Related Symptoms 94
- Chapter 4 87 95
- PCMCIA-Related Symptoms 95
- Memory-Related Symptoms 95
- Speaker-Related Symptoms 95
- Intermittent Problems 97
- Undetermined Problems 98
- POST Task Routines 99
- 92 Chapter 4 100
- Chapter 4 93 101
- 94 Chapter 4 102
- Chapter 4 95 103
- 96 Chapter 4 104
- Top View 105
- Chapter 5 105
- 98 Chapter 5 106
- Bottom View 107
- 100 Chapter 5 108
- Chapter 6 109
- Exploded Diagram 110
- LOGIC UP ASSY 111
- LOGIC UP ASSY (Wireless) 112
- LCD 14.1” 113
- DVD ASSY 114
- CD-ROM ASSY 114
- Combo ASSY 115
- 108 Chapter 6 116
- Chapter 6 109 117
- 110 Chapter 6 118
- Chapter 6 111 119
- 112 Chapter 6 120
- Chapter 6 113 121
- 114 Chapter 6 122
- Chapter 6 115 123
- 116 Chapter 6 124
- Chapter 6 117 125
- TravelMate 420 Series 126
- Appendix A 126
- Main Features 127
- Appendix A 120 128
- Test Compatible Components 129
- Microsoft 130
- XP Home Environment Test 130
- Appendix B 123 131
- 124 Appendix B 132
- XP Pro Environment Test 133
- 126 Appendix B 134
- 2000 Environment Test 135
- 128 Appendix B 136
- Online Support Information 137
- 130 Appendix C 138
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