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Compaq nc6120 HP Compaq nx6110, nc6110, nx6120 and nc6120 Notebook PCs - Maint - Page 188

Table A-5, Parallel Port

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Connector Pin Assignments Table A-5 Parallel Port Pin Signal 1 Strobe 2 Data bit 0 3 Data bit 1 4 Data bit 2 5 Data bit 3 6 Data bit 4 7 Data bit 5 8 Data bit 6 9 Data bit 7 10 Acknowledge 11 Busy 12 Paper end 13 Select Pin Signal 14 Auto linefeed 15 Error 16 Initialize printer 17 Select in 18 Ground 19 Ground 20 Ground 21 Ground 22 Ground 23 Ground 24 Ground 25 Ground Ground A-4 Maintenance and Service Guide

Section	Page
Contents	3
Product Description	7
1.1 Features	8
1.2 Resetting the Computer	11
1.3 Power Management	11
1.4 External Components	12
1.5 Design Overview	28
Troubleshooting	29
2.1 Computer Setup	29
Using Computer Setup	29
Selecting from the Main Menu	30
Selecting from the Security Menu	31
Selecting from the Advanced Menu	32
Selecting from the Tools 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 Updates 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	58
Installing a ROM Update	59
Downloading Other Software	60
3.2 System Recovery	62
Safeguarding Your Data	62
Altiris Local Recovery	62
Using System Restore Points	63
Creating a System Restore Point	64
Restoring to a Restore Point	64
Reinstalling Applications	65
Reinstalling Applications from the Hard Drive	65
Reinstalling Applications from Discs	66
Repairing the Operating System	66
Reinstalling the Operating System	68
Reinstalling Device Drivers and Other Software	70
Illustrated Parts Catalog	71
4.1 Serial Number Location	71
4.2 Computer Major Components	72
4.3 Miscellaneous Plastics Kit	84
4.4 Miscellaneous Cable Kit	85
4.5 Mass Storage Devices	86
4.6 Miscellaneous (Not Illustrated)	88
4.7 Sequential Part Number Listing	91
Removal and Replacement Preliminaries	99
5.1 Tools Required	99
5.2 Service Considerations	100
Plastic Parts	100
Cables and Connectors	100
5.3 Preventing Damage to Removable Drives	101
5.4 Preventing Electrostatic Damage	102
5.5 Packaging and Transporting Precautions	103
5.6 Workstation Precautions	104
5.7 Grounding Equipment and Methods	105
Removal and Replacement Procedures	107
6.1 Serial Number	107
6.2 Disassembly Sequence Chart	108
6.3 Preparing the Computer for Disassembly	110
6.4 Hard Drive	112
6.5 Computer Feet	115
6.6 Bluetooth Board	116
6.7 External Memory Module	118
6.8 Mini PCI Communications Module	120
6.9 Optical Drive	122
6.10 Keyboard	124
6.11 Switch Cover	130
6.12 LED Board	132
6.13 Fan	134
6.14 Heat Sink	135
6.15 Processor	136
6.16 Modem Board	138
6.17 Internal Memory Module	140
6.18 RTC Battery	141
6.19 Display Assembly	142
6.20 Top Cover	145
6.21 Speaker	149
6.22 Digital Media Board	152
6.23 USB/Audio Board	154
6.24 System Board	156
6.25 Serial Connector Module	161
Specifications	163
Connector Pin Assignments	185
Power Cord Set Requirements	193
3-Conductor Power Cord Set	193
General Requirements	194
Country-Specific Requirements	195
Screw Listing	197
Display Component Recycling	217