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HP nx6125 HP Compaq nx6115 and nx6125 Notebook PC - Maintenance and Service Gu - Page 129

surfaces before the heat sink is reinstalled. Thermal paste is

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Removal and Replacement Procedures ✎ The thermal paste should be thoroughly cleaned from the surfaces of the heat sink 1 and processor 2 each time the heat sink is removed. Thermal paste should be reapplied to both surfaces before the heat sink is reinstalled. Thermal paste is included with all heat sink and processor spare part kits. Replacing the Thermal Paste Reverse the above procedure to install the heat sink. Maintenance and Service Guide 6-29

Section	Page
Contents	3
Product Description	5
1.1 Features	6
1.2 Resetting the Notebook	8
1.3 Power Management	9
1.4 External Components	10
1.5 Design Overview	26
Troubleshooting	27
2.1 Computer Setup	27
Accessing Computer Setup	28
Computer Setup Defaults	28
Selecting from the File Menu	29
Selecting from the Security Menu	30
Selecting from the Tools Menu	31
Selecting from the Advanced Menu	32
2.2 Troubleshooting Flowcharts	33
Flowchart 2.1-Initial Troubleshooting	35
Flowchart 2.2-No Power, Part 1	36
Flowchart 2.3-No Power, Part 2	37
Flowchart 2.4-No Power, Part 3	38
Flowchart 2.5-No Power, Part 4	39
Flowchart 2.6-No Video, Part 1	40
Flowchart 2.7-No Video, Part 2	41
Flowchart 2.8-Nonfunctioning Docking Device (if applicable)	42
Flowchart 2.9-No Operating System (OS) Loading	43
Flowchart 2.10-No OS Loading, Hard Drive, Part 1	44
Flowchart 2.11-No OS Loading, Hard Drive, Part 2	45
Flowchart 2.12-No OS Loading, Hard Drive, Part 3	46
Flowchart 2.13-No OS Loading, Diskette Drive	47
Flowchart 2.14-No OS Loading, Optical Drive	48
Flowchart 2.15-No Audio, Part 1	49
Flowchart 2.16-No Audio, Part 2	50
Flowchart 2.17-Nonfunctioning Device	51
Flowchart 2.18-Nonfunctioning Keyboard	52
Flowchart 2.19-Nonfunctioning Pointing Device	53
Flowchart 2.20-No Network/Modem Connection	54
Software Update and Recovery	55
3.1 Software Updates	55
Accessing Computer Information	56
Obtaining the Support Software CD	57
Software Updates and the HP Web Site	57
Downloading a ROM Update	57
Installing a ROM Update	58
Downloading Other Software	59
3.2 System Recovery	60
Safeguarding Your Data	61
Altiris Local Recovery	61
Using System Restore Points	62
Creating a System Restore Point	62
Restoring to a Restore Point	63
Reinstalling Applications	63
Reinstalling Applications from the Hard Drive	64
Reinstalling Applications from Discs	64
Repairing the Operating System	64
Reinstalling the Operating System	66
Reinstalling Device Drivers and Other Software	68
Illustrated Parts Catalog	69
4.1 Serial Number Location	69
4.2 Notebook Major Components	70
4.3 Miscellaneous Plastics Kit	80
4.4 Miscellaneous Cable Kit	81
4.5 Mass Storage Devices	82
4.6 Miscellaneous (Not Illustrated)	84
4.7 Sequential Part Number Listing	86
Removal and Replacement Preliminaries	93
5.1 Tools Required	93
5.2 Service Considerations	94
Plastic Parts	94
Cables and Connectors	94
5.3 Preventing Damage to Removable Drives	95
5.4 Preventing Electrostatic Damage	96
5.5 Packaging and Transporting Precautions	97
5.6 Workstation Precautions	98
5.7 Grounding Equipment and Methods	99
Removal and Replacement Procedures	101
6.1 Serial Number	101
6.2 Disassembly Sequence Chart	102
6.3 Preparing the Notebook for Disassembly	104
6.4 Hard Drive	106
6.5 Notebook Feet	109
6.6 Bluetooth Board	110
6.7 Memory Module	112
6.8 Optical Drive	114
6.9 Switch Cover	116
6.10 Power Button Board	120
6.11 Keyboard	122
6.12 Fan	126
6.13 Heat Sink	127
6.14 Processor	130
6.15 Button Board	132
6.16 Mini PCI Communications Card	134
6.17 Display Assembly	136
6.18 Top Cover	140
6.19 TouchPad	144
6.20 RTC Battery	146
6.21 Speaker	148
6.22 System Board	150
6.23 PC Card Assembly	154
Specifications	157
Connector Pin Assignments	177
Power Cord Set Requirements	183
3-Conductor Power Cord Set	183
General Requirements	184
Country-Specific Requirements	185
Screw Listing	187
Display Component Recycling	203