Acer TravelMate 430 Technical Information Page 36
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28 Chapter 1
mode. The PWM burst mode is that turning on and off the lamp at rate of 150Hz. The effective
brightness is a function of the duty cycle.
Features
1. Wide range 9V to 21V input voltage.
2. Birghtness adjustment by PWM duty mode.
3. Close loop controls lamp current.
- Acer TravelMate 430 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
- Chapter 1 5 13
- Outlook View 14
- Chapter 1 7 15
- Left Panel 16
- Right Panel 17
- Rear Panel 18
- Bottom Panel 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 23 31
- Processor 31
- Second Level Cache 31
- System Memory 31
- Chapter 1 25 33
- DVD-ROM Interface 33
- Audio Interface 33
- Video Interface 33
- 28 Chapter 1 36
- 30 Chapter 1 38
- Electrical specification 38
- °C (storage package) 40
- Chapter 1 33 41
- Mechanical Specification 41
- Memory Address Map 41
- I/O Address Map 41
- Environmental Requirements 41
- 34 Chapter 1 42
- Chapter 1 35 43
- IRQ Assignment Map 43
- 36 Chapter 1 44
- DMA Channel Assignment 44
- System Utilities 45
- Chapter 2 39 47
- 40 Chapter 2 48
- Chapter 2 41 49
- Advanced 51
- Security 52
- Setting a Password 53
- Removing a Password 54
- Changing a Password 54
- 48 Chapter 2 56
- Chapter 2 49 57
- BIOS Flash Utility 58
- System Diagnostic Diskette 58
- Running Diagnostics Program 60
- Chapter 2 57 65
- 58 Chapter 2 66
- Chapter 3 67
- General Information 68
- Chapter 3 61 69
- 62 Chapter 3 70
- Screw List 70
- Removing the Battery Pack 71
- Removing the Optical Module 72
- Removing the HDD module 72
- Removing the Memory 72
- Removing the Keyboard 73
- Disassembling the Main Unit 75
- Disassembling the LCD Module 80
- Disassembling the HDD Module 81
- 74 Chapter 3 82
- 5. Remove the ODD PCB board 82
- Troubleshooting 83
- System Check Procedures 84
- Memory Check 85
- Power System Check 85
- Check the Power Adapter 86
- Touchpad Check 87
- Display Check 87
- Sound Check 88
- Index of Error Messages 90
- Chapter 4 83 91
- Error Message List 91
- 84 Chapter 4 92
- LCD-Related Symptoms 92
- Indicator-Related Symptoms 92
- Power-Related Symptoms 92
- Chapter 4 85 93
- PCMCIA-Related Symptoms 93
- Memory-Related Symptoms 93
- Speaker-Related Symptoms 93
- Intermittent Problems 95
- Undetermined Problems 96
- POST Task Routines 97
- 90 Chapter 4 98
- Chapter 4 91 99
- 92 Chapter 4 100
- Chapter 4 93 101
- 94 Chapter 4 102
- Top View 103
- Chapter 5 103
- SW1 Settings (Lid switch) 104
- SW2 Settings 104
- Bottom View 105
- 98 Chapter 5 106
- Chapter 6 107
- Exploded Diagram 108
- LOGIC UP ASSY 109
- LOGIC UP ASSY (Wireless) 110
- LCD 14.1” 111
- DVD ASSY 112
- CD-ROM ASSY 112
- Combo ASSY 113
- 106 Chapter 6 114
- Chapter 6 107 115
- 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
- Embedded numeric keypad 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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