Compaq dx2818 - Microtower PC Dokumentacja Pobierz pdf (Strona 138)

A 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.

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 BNC

Connector and Icon Pin Signal

Data

Ground

128 Appendix A Connector Pin Assignments

1 2 ... 133 134 135 136 137 138 139 140 141 142 143 ... 161 162

Service Reference Guide 1
About This Book 3
Table of contents 5
1 Product Features 11
Rear Panel Components 13
Keyboard 15
Using the Windows Logo Key 16
Serial Number Location 17
Computer Setup—Main 21
Computer Setup—Advanced 22
Computer Setup—Power 24
Computer Setup—Boot 25
Computer Setup—Exit 26
HP Insight Diagnostics 27
Survey Tab 28
Diagnose Tab 28
Test Tab 29
Status Tab 30
Help Tab 31
Protecting the Software 32
Features 34
SMART ATA Drives 35
Hard Drive Capacities 35
Chassis Designations 36
Figure 6-3 Model dx2818 37
Chassis Designations 27 37
Small Form Factor (SFF) 38
Generating Static 38
Grounding the Work Area 40
Operating Guidelines 41
Routine Care 42
Service Considerations 43
Cables and Connectors 44
Hard Drives 44
Lithium Coin Cell Battery 45
Microtower (MT) Chassis 46
Preparation for Disassembly 47
Access Panel 48
Front Bezel 49
Bezel Blanks 50
Expansion Cards 55
Cable Management 59
Cable Connections 60
Drive Positions 61
Power Switch/LED Assembly 77
System Fan 78
Heatsink assembly 79
Hood Sensor 91
Port Cover 92
Installing Additional Drives 100
Removing an Optical Drive 102
DDR2-SDRAM DIMMs 114
Populating DIMM Sockets 115
Installing DIMMs 116
Front I/O Device 124
Power Switch Assembly 125
Heatsink 127
Processor 128
Power Supply 129
System Board 131
Type 1 Battery Holder 133
Type 2 Battery Holder 133
Type 3 Battery Holder 134
Installing a Security Lock 135
HP Business PC Security Lock 136
A Connector Pin Assignments 138
Parallel Interface 139
Microphone 140
Headphone 140
Line-in Audio 140
Line-out Audio 140
24-Pin Power 141
PCI Express 142
4-Pin Power (for CPU) 144
B Power Cord Set Requirements 145
Country-Specific Requirements 146
C Troubleshooting 147
Helpful Hints 148
Solving General Problems 149
Audible Codes 153
Contacting Customer Support 155
D Specifications 156
Small Form Factor 157

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