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HP Nw8000 Maintenance and Service Guide: HP Compaq Notebook nc8000 and nw8000 - Page 120

System Board

UPC - 829160468389

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Removal and Replacement Procedures 5.22 System Board Spare Part Number Information System board with 128-MB of video memory System board with 64-MB of video memory ✎ Both system boards include thermal grease. 349206-001 345064-001 ✎ When replacing the system board, ensure that the following components are removed from the defective system board and installed on the replacement system board: ■ Memory expansion boards (Section 5.9) ■ Modem board (Section 5.10) ■ Mini PCI communications board (Section 5.11) ■ Heat sink (Section 5.12) ■ Processor (Section 5.13) ■ Real time clock battery (Section 5.15) ■ Security card (Section 5.16) 1. Prepare the notebook for disassembly (Section 5.3) and remove the following components: ❏ Keyboard (Section 5.8) ❏ LED switch cover (Section 5.14) ❏ Display assembly (Section 5.17) ❏ Top cover (Section 5.18) ❏ Fan (Section 5.21) 5-42 Maintenance and Service Guide

Section	Page
Product Description	6
1.1 Models	7
1.2 Features	14
1.3 Clearing a Password	16
1.4 Power Management	16
1.5 External Components	17
1.6 Design Overview	29
Troubleshooting	30
2.1 Computer Setup and Diagnostics Utilities	30
Using Computer Setup	31
Selecting from the File Menu	32
Selecting from the Security Menu	33
Selecting from the Advanced Menu	34
2.2 Using Diagnostics for Windows	36
Obtaining, Saving or Printing Configuration Information	36
Obtaining, Saving or Printing Diagnostic Test Information	37
2.3 Troubleshooting Flowcharts	39
Flowchart 2.1-Initial Troubleshooting	40
Flowchart 2.2-No Power, Part 1	41
Flowchart 2.3-No Power, Part 2	42
Flowchart 2.4-No Power, Part 3	43
Flowchart 2.5-No Power, Part 4	44
Flowchart 2.6-No Video, Part 1	45
Flowchart 2.7-No Video, Part 2	46
Flowchart 2.8-Nonfunctioning Port Replicator (if applicable)	47
Flowchart 2.9-No Operating System (OS) Loading	48
Flowchart 2.10-No OS Loading, Hard Drive, Part 1	49
Flowchart 2.11-No OS Loading, Hard Drive, Part 2	50
Flowchart 2.12-No OS Loading, Hard Drive, Part 3	51
Flowchart 2.13-No OS Loading, Diskette Drive	52
Flowchart 2.14-No OS Loading, CD- or DVD-ROM Drive	53
Flowchart 2.15-No Audio, Part 1	54
Flowchart 2.16-No Audio, Part 2	55
Flowchart 2.17-Nonfunctioning Device	56
Flowchart 2.18-Nonfunctioning Keyboard	57
Flowchart 2.19-Nonfunctioning Pointing Device	58
Flowchart 2.20-No Network/Modem Connection	59
Illustrated Parts Catalog	60
3.1 Serial Number Location	60
3.2 Notebook Major Components	61
3.3 Miscellaneous Plastics Kit Components	67
3.4 Miscellaneous Cable Kit Components	68
3.5 Mass Storage Devices	69
3.6 Miscellaneous	71
Removal and Replacement Preliminaries	72
4.1 Tools Required	72
4.2 Service Considerations	73
Plastic Parts	73
Cables and Connectors	73
4.3 Preventing Damage to Removable Drives	74
4.4 Preventing Electrostatic Damage	75
4.5 Packaging and Transporting Precautions	75
4.6 Workstation Precautions	76
4.7 Grounding Equipment and Methods	77
Removal and Replacement Procedures	79
5.1 Serial Number	80
5.2 Disassembly Sequence Chart	80
5.3 Preparing the Notebook for Disassembly	82
5.4 Notebook Feet	88
5.5 MultiBay Device	89
5.6 Bluetooth Board	90
5.7 Optical Drive	92
5.8 Keyboard	93
5.9 Memory Expansion Board	97
5.10 Modem Board	98
5.11 Mini PCI Communications Board	100
5.12 Heat Sink	102
5.13 Processor	104
5.14 LED Switch Cover	105
5.15 RTC Battery	107
5.16 Security Card	108
5.17 Display Assembly	109
5.18 Top Cover	112
5.19 Speaker	115
5.20 TouchPad	116
5.21 Fan Assembly	118
5.22 System Board	120
Specifications	124
Connector Pin Assignments	140
Power Cord Set Requirements	146
3-Conductor Power Cord Set	146
General Requirements	146
Country-Specific Requirements	147
Screw Listing	149