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Flowchart 2.18-Nonfunctioning Keyboard

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Troubleshooting Flowchart 2.18-Nonfunctioning Keyboard Keyboard not operating properly. Connect notebook to good external keyboard. N External device works? Y Replace system board. Reseat internal keyboard connector (if applicable). N Keyboard operating properly? Y Replace internal keyboard or cable. Y Keyboard Done operating Done properly? N Replace system board. 2-26 Maintenance and Service Guide

Section	Page
Contents	3
Product Description	5
1.1 Features	5
1.2 Resetting the Notebook	8
1.3 Power Management	9
1.4 External Components	10
1.5 Design Overview	28
Troubleshooting	29
2.1 Computer Setup	29
2.2 Troubleshooting Flowcharts	35
Flowchart 2.1-Initial Troubleshooting	37
Flowchart 2.2-No Power, Part 1	38
Flowchart 2.3-No Power, Part 2	39
Flowchart 2.4-No Power, Part 3	40
Flowchart 2.5-No Power, Part 4	41
Flowchart 2.6-No Video, Part 1	42
Flowchart 2.7-No Video, Part 2	43
Flowchart 2.8-Nonfunctioning Docking Device (if applicable)	44
Flowchart 2.9-No Operating System (OS) Loading	45
Flowchart 2.10-No OS Loading, Hard Drive, Part 1	46
Flowchart 2.11-No OS Loading, Hard Drive, Part 2	47
Flowchart 2.12-No OS Loading, Hard Drive, Part 3	48
Flowchart 2.13-No OS Loading, Diskette Drive	49
Flowchart 2.14-No OS Loading, Optical Drive	50
Flowchart 2.15-No Audio, Part 1	51
Flowchart 2.16-No Audio, Part 2	52
Flowchart 2.17-Nonfunctioning Device	53
Flowchart 2.18-Nonfunctioning Keyboard	54
Flowchart 2.19-Nonfunctioning Pointing Device	55
Flowchart 2.20-No Network/Modem Connection	56
Illustrated Parts Catalog	57
3.1 Serial Number Location	57
3.2 Notebook Major Components	58
3.3 Mass Storage Devices	70
3.4 Miscellaneous Plastics Kit	72
3.5 Miscellaneous (Not Illustrated)	73
3.6 Sequential Part Number Listing	75
Removal and Replacement Preliminaries	83
4.1 Tools Required	83
4.2 Service Considerations	84
4.3 Preventing Damage to Removable Drives	85
4.4 Preventing Electrostatic Damage	86
4.5 Packaging and Transporting Precautions	87
4.6 Workstation Precautions	88
4.7 Grounding Equipment and Methods	89
Removal and Replacement Procedures	91
5.1 Serial Number	92
5.2 Disassembly Sequence Chart	93
5.3 Preparing the Notebook for Disassembly	95
5.4 Hard Drive	97
5.5 Notebook Feet	101
5.6 External Memory Module	101
5.7 Optical Drive	104
5.8 Keyboard Cover	106
5.9 Volume Board	113
5.10 Bluetooth Board	114
5.11 Keyboard	115
5.12 Mini PCI Communications Card	119
5.13 Internal Memory Module	121
5.14 Display Assembly	123
5.15 Base Enclosure	130
5.16 Fan Assembly	139
5.17 Speaker	141
5.18 Front Board	143
5.19 Thermal Module	146
5.20 Processor	149
5.21 Thermal Frame	151
5.22 System Board	157
Specifications	163
Connector Pin Assignments	181
Power Cord Set Requirements	187
3-Conductor Power Cord Set	187
General Requirements	188
Country-Specific Requirements	189
Screw Listing	191