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HP Nx7400 HP Compaq nx7300 and nx7400 Notebook PC Maintenance and Service Guid - Page 144

Disconnect the following cables from the system board, Modem connector cable, USB board cable

UPC - 882780786653

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Page 144 highlights

Removal and Replacement Procedures 3. Disconnect the following cables from the system board: 1 Modem connector cable 2 USB board cable 3 Audio board cable 4 Modem module cable Disconnecting the System Board Cables Maintenance and Service Guide 5-51

Section	Page
Maintenance and Service Guide	1
Contents	4
Product Description	8
1.1 Features	9
1.2 Resetting the Computer	12
1.3 Power Management	13
1.4 External Components	14
1.5 Design Overview	27
Troubleshooting	28
2.1 Starting Computer Setup	28
Using Computer Setup	29
Navigating and selecting in Computer Setup	29
Restoring Factory Settings in Computer Setup	30
Computer Setup Menus	31
File Menu	31
Security Menu	32
Diagnostics Menu	34
System Configuration Menu	34
2.2 Troubleshooting Flowcharts	37
Illustrated Parts Catalog	58
3.1 Serial Number Location	58
3.2 Computer Major Components	59
3.3 Plastics Kit	71
3.4 Mass Storage Devices	73
3.5 Miscellaneous (Not Illustrated)	75
3.6 Sequential Part Number Listing	78
Removal and Replacement Preliminaries	86
4.1 Tools Required	86
4.2 Service Considerations	87
Plastic Parts	87
Cables and Connectors	87
4.3 Preventing Damage to Removable Drives	88
4.4 Preventing Electrostatic Damage	89
4.5 Packaging and Transporting Precautions	90
4.6 Workstation Precautions	91
4.7 Grounding Equipment and Methods	92
Removal and Replacement Procedures	94
5.1 Serial Number	95
5.2 Disassembly Sequence Chart	96
5.3 Preparing the Computer for Disassembly	98
5.4 Hard Drive	100
5.5 Computer Feet	104
5.6 Optical Drive	105
5.7 External Memory Module	107
5.8 Bluetooth Module	110
5.9 Keyboard	112
5.10 Thermal Plate	116
5.11 Fan Assembly	117
5.12 Heat Sink	118
5.13 Processor	121
5.14 Mini Card Module	123
5.15 Internal Memory Module	126
5.16 RTC Battery	128
5.17 Switch Cover	129
5.18 Display Assembly	132
5.19 Top Cover	136
5.20 Modem Module	140
5.21 System Board	142
5.22 System Board Frame (full-featured models only)	149
5.23 USB/Audio Board	152
Specifications	154
Screw Listing	174
Backup and Recovery in Windows Vista	197
Backup and Recovery in Windows XP	204
Display Component Recycling	212
Connector Pin Assignments	226
Power Cord Set Requirements	232
3-Conductor Power Cord Set	232
General Requirements	233
Country/Region-Specific Requirements	234