Hp DC7800 Manual de usuario Pagina 204
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Ethernet RJ-45
Connector and Icon Pin Signal
1
2
3
4
(+) Transmit Data
(-) Transmit Data
(+) Receive Data
Unused
5
6
7
8
Unused
(-) Receive Data
Unused
Unused
Ethernet AUI
Connector and Icon
Pin Signal Pin Signal
1
2
3
4
Ground
Negative AUI Differential Collision
Positive AUI Differential Collision
Negative AUI Differential Transmit
9
10
11
12
Positive AUI Differential Receive
+12V
Ground
Ground
5
6
7
8
Positive AUI Differential Transmit
Ground
Ground
Negative AUI Differential Receive
13
14
15
16
Unused
Unused
Unused
Unused
192 Appendix A Connector Pin Assignments
- Service Reference Guide 1
- About This Book 3
- Table of contents 5
- Computer Setup—File 17
- Computer Setup—Storage 18
- Computer Setup—Security 20
- Computer Setup—Power 23
- Computer Setup—Advanced 24
- HP Insight Diagnostics 27
- Survey Tab 28
- Test Tab 29
- Status Tab 29
- Help Tab 30
- Protecting the Software 31
- 4 Desktop Management 33
- HP OpenView Agent 34
- Remote System Installation 35
- HP System Software Manager 37
- HP Client Manager 37
- HP Client Premium Suite 39
- HP Client Foundation Suite 39
- HP Client Catalog for SMS 40
- ROM Flash 43
- Remote ROM Flash 44
- HPQFlash 44
- Replicating the Setup 45
- Copying to Multiple Computers 46
- Creating a Bootable Device 47
- Dual-State Power Button 49
- HP Web Site Support 50
- Industry Standards 50
- Asset Tracking and Security 50
- Password Security 53
- Entering a Setup Password 54
- Clearing Passwords 55
- DriveLock 56
- Smart Cover Sensor 57
- Smart Cover Lock 57
- Locking the Smart Cover Lock 58
- SATA Hard Drives 60
- SATA Hard Drive Cables 61
- PATA Device Information 62
- ATA SMART Drives 62
- Hard Drive Capacities 62
- Chassis Designations 63
- Small Form Factor (SFF) 64
- Ultra-Slim Desktop (USDT) 64
- Generating Static 65
- Grounding the Work Area 66
- Operating Guidelines 67
- Routine Care 68
- Service Considerations 69
- Cables and Connectors 70
- Hard Drives 70
- Lithium Coin Cell Battery 71
- Hood Sensor 75
- Drives 83 95
- Drives 85 97
- ReadyBoost Card 101
- Fan Shroud 103
- Heatsink 104
- Processor 105
- Rear Chassis Fan 107
- Inner Chassis Fan 108
- Serial Port 109
- Power Supply 110
- System Board 111
- Type 1 Battery Holder 113
- Type 2 Battery Holder 113
- Type 3 Battery Holder 114
- Preparation for Disassembly 119
- Smart Cover FailSafe Key 120
- External Security Devices 122
- HP Business PC Security Lock 123
- Computer Access Panel 125
- Front Bezel 126
- Bezel Blanks 127
- Installing Additional Memory 128
- Populating DIMM Sockets 129
- Installing DIMMs 130
- Expansion Cards 132
- Cable Management 136
- Cable Connections 137
- Drive Positions 138
- Drives 129 141
- Removing an Optical Drive 142
- Drives 135 147
- Drives 141 153
- Chassis Fan 158
- Power Switch Assembly 159
- Front I/O Device 160
- Backwall 167
- DDR2-SDRAM SODIMMs 178
- Populating SODIMM Sockets 179
- Installing SODIMMs 179
- Optical Drive 182
- Preparing a New Optical Drive 183
- Optical Drive Connector 185
- Hard Drive 186
- Hard Drive 175 187
- Hard Drive Cage 190
- Port Cover 191
- I/O Panel 195
- A Connector Pin Assignments 203
- Ethernet RJ-45 204
- Ethernet AUI 204
- Parallel Interface 205
- Microphone 206
- Headphone 206
- Line-in Audio 206
- Line-out Audio 206
- External Infrared Transceiver 207
- CD-ROM 50-Pin Connector 209
- 24-Pin Power 209
- 4-Pin Power (for CPU) 210
- SATA Data and Power 211
- PCI Express 211
- PCI Express Mini Card 213
- DVI Connector 214
- B Power Cord Set Requirements 215
- Country-Specific Requirements 216
- C POST Error Messages 217
- Audible Codes 224
- Safety and Comfort 228
- Helpful Hints 229
- Solving General Problems 231
- Solving General Problems 221 233
- Solving Power Problems 234
- Solving Diskette Problems 235
- Solving Diskette Problems 225 237
- Solving Hard Drive Problems 238
- Solving Display Problems 242
- Solving Display Problems 231 243
- Solving Audio Problems 245
- Solving Printer Problems 247
- Solving Network Problems 251
- Solving Network Problems 241 253
- Solving Memory Problems 254
- Solving Processor Problems 256
- Solving Drive Key Problems 259
- Solving Software Problems 262
- Contacting Customer Support 263
- Reference Designators 264
- Secondary NIC clock crystal 269
- RTC clock crystal/tie-down 269
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