HP Compaq Business Desktop dx2000 Technical Information download pdf (Page 65)

Service Reference Guide, dx2000 uT 359782-002 A–1

Connector Pin Assignments

This appendix contains the pin assignments for many computer and workstation connectors.

Some of these connectors may not be used on the product being serviced.

Enhanced Keyboard

Connector and Icon Pin Signal

Data

Unused

Ground

+5 VDC

Clock

Unused

Mouse

Connector and Icon Pin Signal

Data

Unused

Ground

+5 VDC

Clock

Unused

Ethernet RJ-45

Connector and Icon Pin Signal

(+) Transmit Data

(-) Transmit Data

(+) Receive Data

Unused

(-) Receive Data

Unused

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 105 106

Personal Computers 1
2st Edition 1
Service Reference Guide 3
Contents 5
1.1 Microsoft Windows XP 9
1.2 Converting to NTFS 10
1.3 HP Software 10
2.1 Power-On Self-Test (POST) 11
2.2 Computer Setup Utilities 12
2.2.2 Computer Setup Menu 14
2.4 Restoring the Software 18
2.3 Protecting the Software 18
Desktop Management 19
3.2.1 FailSafe Boot Block ROM 20
3.2.2 Dual-State Power Button 20
3.2.3 Power Management 21
3.2.4 World Wide Web Site 21
3.3 Security 22
Entering a Power-On Password 23
Entering a Setup Password 23
Clearing Passwords 25
4.1 Ultra ATA Jumpers 27
4.2 Ultra ATA Cables 27
Single-Drive Cable 28
Two-Drive Cable 28
4.3.1 Device Classes 29
4.4 SMART 32
4.5 Drive Capacities 33
Disassembly Preparation 35
5.2.1 Generating Static 36
5.2.4 Grounding the Work Area 37
5.3 Routine Care 38
5.3.3 Cleaning the Keyboard 39
5.3.4 Cleaning the Monitor 39
5.3.5 Cleaning the Mouse 39
5.4 Service Considerations 40
5.4.4 Cables and Connectors 41
5.4.5 Hard Drives 41
Microtower (µT) Chassis 43
6.2 Access Panel 44
6.3 Front Bezel 45
6.4 Front Drive Bezels 46
6.4.2 Diskette Drive Bezel 47
6.5 Memory 48
6.6 Expansion Card 50
6.7 Drives 51
6.8 Front USB Device 56
6.9 Power Switch Assembly 57
6.10 Speaker 58
6.11 System Fan 59
6.12 Processor and Heatsink 60
6.13 System Board 61
6.14 Battery 62
6.15 Power Supply 64
Connector Pin Assignments 65
Parallel Interface 66
Microphone 66
Headphone 67
Line-In Audio 67
Line-Out Audio 67
20-Pin Power 68
4-Pin Power (for CPU) 68
Power Cord Set Requirements 69
Country-Specific Requirements 70
POST Error Messages 71
Preliminary Checklist 75
Solving Minor Problems 76
Solving Power Supply Problems 78
Solving Diskette Problems 79
Solving Hard Drive Problems 80
Solving Display Problems 83
Solving Audio Problems 86
Solving Printer Problems 88
Solving Keyboard Problems 89
Solving Network Problems 92
Solving Memory Problems 94
Solving Processor Problems 95
Solving Drive Key Problems 97
DIMM Sockets 102

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HP Compaq Business Desktop dx2000 Technical Information Page 65

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