Acer MP-340 20GB Technical Information Page 78
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70 Chapter 3
10. Release the CPU lock.
11. Remove the CPU from the main unit carefully.
12. Tear off the tape that fastens the antenna line to the main board. Then take the antenna line out from the
other side.
13. Remove the screw here.
14. Unscrew the screw as shown here.
15. Then remove the main board assembly from the lower case.
16. Unscrew the four screw nuts that secure the I/O bracket.
17. Remove the screw on the main frame.
18. Disconnect one fan connector.
19. Disconnect another fan connector.
20. Remove the four screws that fasten the I/O bracket to the main frame.
21. Detach the I/O bracket from the main board.
- 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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