Hp DC7800 Manual do Utilizador Página 165
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System Board
1. Prepare the computer for disassembly (Preparation for Disassembly on page 107).
2. Remove the access panel (
Computer Access Panel on page 113).
3. Remove all PCI and PCI Express expansion boards (
Expansion Cards on page 120).
4. Remove the fan shroud from the chassis (
Fan Shroud on page 145).
5. Rotate the drive cage to its upright position.
6. Rotate the power supply to its full upright position.
7. Disconnect all data and power cables from the system board.
System Board 153
- 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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