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Table 1-10, TouchPad Components, Compaq Presario V4200 and HP Compaq nx7220

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Product Description The Compaq Presario V4200 and HP Compaq nx7220 computer TouchPad components are shown below and described in Table 1-10. TouchPad Components, Compaq Presario V4200 Table 1-10 TouchPad Components Compaq Presario V4200 and HP Compaq nx7220 Item Component Function 1 TouchPad Moves the pointer. 2 TouchPad horizontal Scrolls left or right. scroll zone 3 Left and right TouchPad Function like the left and right buttons on buttons an external mouse. 4 TouchPad vertical scroll zone Scrolls up or down. Maintenance and Service Guide 1-23

Section	Page
Contents	3
Product Description	7
1.1 Features	8
1.2 Resetting the Computer	11
1.3 Power Management	12
1.4 External Components	13
1.5 Design Overview	32
Troubleshooting	33
2.1 Computer Setup	33
Accessing Computer Setup	34
Computer Setup Defaults	34
Selecting from the File Menu	35
Selecting from the Security Menu	36
Selecting from the Tools Menu	37
Selecting from the Advanced Menu	38
2.2 Troubleshooting Flowcharts	39
Illustrated Parts Catalog	61
3.1 Serial Number Location	61
3.2 Computer Major Components	62
3.3 Display Assembly Subcomponents: HP Pavilion dv4200 Models	78
3.4 Display Assembly Subcomponents: Compaq Presario V4200 and HP Compaq nx7220 Models	80
3.5 Miscellaneous Doors/Covers Kit Spare Part Information	82
3.6 Miscellaneous Cable Kit	84
3.7 Mass Storage Devices	86
3.8 Miscellaneous (Not Illustrated)	88
3.9 Sequential Part Number Listing	90
Removal and Replacement Preliminaries	99
4.1 Tools Required	99
4.2 Service Considerations	100
Plastic Parts	100
Cables and Connectors	100
4.3 Preventing Damage to Removable Drives	101
4.4 Preventing Electrostatic Damage	102
4.5 Packaging and Transporting Precautions	103
4.6 Workstation Precautions	104
4.7 Grounding Equipment and Methods	105
Removal and Replacement Procedures	107
5.1 Serial Number	108
5.2 Disassembly Sequence Chart	109
5.3 Preparing the Computer for Disassembly	111
5.4 Hard Drive	113
5.5 Computer Feet	117
5.6 Optical Drive	119
5.7 Memory Module	121
5.8 Mini PCI Communications Module	124
5.9 RTC Battery	126
5.10 Heat Sink	127
5.11 Processor	131
5.12 Switch Cover	133
5.13 Keyboard	136
5.14 Display Assembly	141
5.15 Top Cover	158
5.16 Base Enclosure	162
5.17 Modem Board	166
5.18 System Board	168
5.19 PC Card Assembly	182
5.20 Fan Assembly	185
5.21 Speakers	188
5.22 USB Board	190
5.23 Bluetooth Module	193
Specifications	195
Connector Pin Assignments	211
Power Cord Set Requirements	217
3-Conductor Power Cord Set	217
General Requirements	218
Country-Specific Requirements	219
Screw Listing	221
Display Component Recycling	253