HP Compaq dc7900 USDT Spezifikationen Seite 85
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Cable Management
Always follow good cable management practices when working inside the computer.
●
Keep cables away from major heat sources like the heatsink.
●
Do not jam cables on top of expansion cards or memory modules. Printed circuit cards like these
are not designed to take excessive pressure on them.
●
Keep cables clear of sliding or moveable parts to prevent them from being cut or crimped when
the parts are moved.
●
When folding a flat ribbon cable, never fold to a sharp crease. Sharp creases may damage the
wires.
●
Some flat ribbon cables come prefolded. Never change the folds on these cables.
●
Do not bend any cable sharply. A sharp bend can break the internal wires.
●
Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius.
●
Never crease a SATA data cable.
●
Do not rely on components like the drive cage, power supply, or computer cover to push cables
down into the chassis. Always position the cables to lay properly by themselves.
When removing the power supply power cables from the P1 or P3 connectors on the system board,
always follow these steps:
1. Squeeze on the top of the retaining latch attached to the cable end of the connector (1).
2. Grasp the cable end of the connector and pull it straight up (2).
CAUTION: Always pull the connector - NEVER pull on the cable. Pulling on the cable could
damage the cable and result in a failed power supply.
Figure 7-11 Removing a power supply cable from the connector
Cable Management 73
- 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 24
- Computer Setup—Advanced 25
- HP Insight Diagnostics 29
- Survey Tab 30
- Test Tab 31
- Status Tab 31
- Help Tab 32
- Protecting the Software 33
- 4 Desktop Management 35
- Remote System Installation 36
- HP SoftPaq Download Manager 38
- HP System Software Manager 38
- Management Technology 42
- Verdiem Surveyor 44
- Subscriber’s Choice 44
- Retired Solutions 44
- ROM Flash 45
- Replicating the Setup 46
- Copying to Multiple Computers 47
- Creating a Bootable Device 48
- Dual-State Power Button 50
- HP Web Site Support 51
- Industry Standards 51
- Asset Tracking and Security 51
- Password Security 55
- Entering a Power-On Password 56
- Entering a Setup Password 56
- DriveLock 58
- Smart Cover Sensor 59
- Cable Lock Provision 61
- Drive Protection System 61
- Surge-Tolerant Power Supply 61
- Thermal Sensor 62
- SATA Hard Drives 63
- SATA Hard Drive Cables 64
- PATA Device Information 65
- ATA SMART Drives 65
- Hard Drive Capacities 65
- Chassis Designations 66
- Small Form Factor (SFF) 67
- Ultra-Slim Desktop (USDT) 67
- Generating Static 68
- Grounding the Work Area 69
- Operating Guidelines 70
- Routine Care 71
- Service Considerations 72
- Cables and Connectors 73
- Hard Drives 73
- Lithium Coin Cell Battery 74
- External Security Devices 67 79
- Drives 85 97
- Rear Chassis Fan 114
- Heatsink 116
- Fan Shroud 117
- Processor 118
- Front Chassis Fan 119
- Power Supply 120
- System Board 121
- Type 2 Battery Holder 123
- Type 1 Battery Holder 123
- Type 3 Battery Holder 124
- Preparation for Disassembly 130
- Smart Cover FailSafe Key 131
- External Security Devices 133
- HP Business PC Security Lock 135
- Computer Access Panel 137
- Front Bezel 138
- Bezel Blanks 139
- Installing Additional Memory 140
- Populating DIMM Sockets 141
- Installing DIMMs 142
- Expansion Cards 144
- Cable Management 149
- Cable Connections 150
- Drive Positions 151
- Removing an Optical Drive 155
- Drives 149 161
- Front Fan Assembly 174
- Hood Sensor 175
- Power Switch Assembly 176
- Front I/O Device 177
- Smart Cover Lock 178
- Backwall 184
- Orientation 188
- External Security Devices 181 193
- Figure 9-7 Engaging the Lock 194
- Bezel Blank 197
- Populating SODIMM Sockets 199
- Installing SODIMMs 200
- Replacing the Optical Drive 203
- Optical Drive Connector 205
- Hard Drive 207
- Hard Drive Cage 211
- Port Cover 212
- Front Fan 213
- Rear Fan 215
- A Connector Pin Assignments 224
- Ethernet RJ-45 225
- Ethernet AUI 225
- Parallel Interface 226
- Microphone 227
- Headphone 227
- Line-in Audio 227
- Line-out Audio 227
- External Infrared Transceiver 228
- CD-ROM 50-Pin Connector 230
- 24-Pin Power 230
- 4-Pin Power (for CPU) 231
- SATA Data and Power 232
- PCI Express 232
- PCI Express Mini Card 234
- DVI Connector 235
- B Power Cord Set Requirements 236
- Country-Specific Requirements 237
- C POST Error Messages 238
- Audible Codes 245
- Safety and Comfort 249
- Helpful Hints 250
- Solving General Problems 252
- Solving General Problems 241 253
- Solving Power Problems 255
- Solving Diskette Problems 256
- Solving Diskette Problems 245 257
- Solving Hard Drive Problems 259
- Solving Display Problems 263
- Solving Display Problems 253 265
- Solving Audio Problems 267
- Solving Printer Problems 268
- Solving Printer Problems 257 269
- Solving Network Problems 273
- Solving Network Problems 263 275
- Solving Memory Problems 276
- Solving Processor Problems 277
- Solving Software Problems 283
- Contacting Customer Support 284
- Reference Designators 285
- F Specifications 291
- SFF Specifications 292
- USDT Specifications 293
Verwandte Produkte und Handbücher für PC / Workstation Barebones HP Compaq dc7900 USDT
(43 Seiten)
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