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5-20 Removal and Replacement Procedures - Desktop
5.12 Expansion Board Guide
To remove the expansion board guide, complete the following steps:
1. Remove the system unit cover (Section 5.6).
2. Remove all outboard expansion boards that may interfere with this operation (Section 5.8).
3. Push down on the plastic clip 1 on the top of the board guide 2 to release it; then pivot the guide
down 2 and pull it out.
Figure 5-18.
Removing the Expansion Board Guide
To replace the expansion board guide, reverse the above procedure. The board guides in the spares kit
are keyed for proper installation.
- MAINTENANCE 1
- & SERVICE GUIDE 1
- 278041-001 2
- 278785-002 2
- Maintenance and Service Guide 3
- About this Guide 5
- Product Description 5
- Compaq Utilities 6
- Contents v 7
- Jumper and Switch Information 9
- Specifications 9
- Symbols and Conventions 11
- Technician Notes 12
- System Serial Number 12
- Figure 1-1 13
- Personal Computer Models 14
- 1.2 Features 15
- 1.2.1 Pentium System Feature 15
- 1-4 Product Description 16
- 1.3 System Design 17
- 1.3.1 Design Overview 17
- 1.3.2 System Board 18
- 1.3.3 Processor 18
- 1.3.4 System Memory 18
- 1.3.5 Cache Memory 18
- 1.3.6 Graphics Controllers 19
- 1.3.7 Chipsets 19
- VIA Chipset 19
- 440LX Chipset 19
- 1.3.8 System I/O 20
- 1.3.9 System BIOS 20
- PCI Auto-Configuration 20
- IDE/EIDE Auto-Configuration 20
- ISA Plug and Play Capability 20
- 1.3.10 Expansion Slots 21
- 1.3.11 Power Supply 21
- 1.3.13 Serial Port 21
- 1.3.14 Parallel Port 21
- Preloaded Software 22
- System Drivers 23
- Asset Management 24
- Configuration Management 24
- Integration Management 25
- Fault Management 25
- Security Management 25
- Table 1-3 26
- Lights and Controls 26
- 1.4.2 Drive Positions 27
- Figure 1-3 27
- Table 1-4 27
- 1.4.3 Rear Panel Connectors 28
- Figure 1-4 28
- Rear Panel Connectors 28
- Table 1-5 28
- Table 1-6 29
- 1.5.2 Drive Positions 30
- Figure 1-6 30
- Table 1-7 31
- 1.5.3 Rear Panel Connectors 32
- Figure 1-7 32
- Table 1-8 33
- 1.6 Enhanced Keyboard 34
- Figure 1-8 34
- Enhanced Keyboard 34
- Table 1-9 35
- 1.7 Options 36
- 1.7.5 Monitor Options 37
- 1.7.8 PD-CD Drive 38
- 1.7.9 Modems 38
- 2.1 Getting Ready 39
- 2.1.1 Preparing the Computer 39
- 2-2 Compaq Utilities 40
- 2.2 Computer Setup 41
- Table 2-1 42
- Built-In Devices 42
- Quick Boot 42
- 2.2.1 Security Features 43
- Entering a Power-On Password 44
- Changing a Power-On Password 44
- Deleting a Power-On Password 45
- Table 2-5 45
- Clearing the Password 46
- Figure 2-1 46
- Figure 2-2 46
- 2.2.2 QuickLock/QuickBlank 47
- 2.3 Computer Checkup (TEST) 48
- 2.10 ROMPaq 52
- 2.11.1 Asset Management 53
- 2.11.2 Fault Management 54
- Monitor Fault Diagnosis 54
- Proactive Backup 55
- Surge-Tolerant Power Supply 55
- 2.11.3 Security Management 55
- Remote ROM Flash 56
- Upgrading Flash ROM 57
- Using Remote ROM Flash 57
- FailSafe Boot Block ROM 58
- Table 2-6 59
- Keyboard Light Combinations 59
- Figure 2-3 59
- Keyboard Lights 59
- Remote Security Management 60
- Replicated Setup 60
- Using Replicated Setup 60
- Power Management 60
- Compaq Integrated Software 61
- Universal Driver Manager 61
- 2.11.5 Integration Management 62
- Desktop Management Interface 62
- 2-26 Compaq Utilities 64
- 2.13 Prefailure Warranty 65
- Figure 3-1 66
- 3.1 System Unit 67
- Figure 3-2 67
- System Unit, Desktop 67
- Table 3-1 68
- Figure 3-3 69
- System Unit, Minitower 69
- Table 3-2 70
- 3.2 Mass Storage Devices 71
- Figure 3-4 71
- Mass Storage Devices 71
- Table 3-3 72
- 3.3 Cables 73
- Figure 3-5 73
- Table 3-4 74
- Figure 3-6 75
- Optional Boards 75
- Table 3-5 76
- Standard and Optional Boards 76
- Figure 3-7 77
- System and Riser Boards 77
- 3.5 Keyboards 79
- Table 3-6 80
- 3.6 Monitors 81
- Figure 3-9 81
- Monitors 81
- Table 3-7 82
- Figure 3-10 84
- Miscellaneous Hardware Kit 84
- Table 3-8 84
- Figure 3-11 85
- Table 3-9 85
- Figure 3-12 86
- Table 3-10 86
- 3.9 Miscellaneous Parts 87
- Figure 3-13 87
- Table 3-11 87
- Figure 3-14 88
- Miscellaneous Parts 88
- Table 3-12 88
- 3.10 Shipping Boxes 89
- 3.11 Documentation 90
- Table 3-15 90
- Documentation 90
- 3.12 Software 91
- Table 3-16 91
- Software 91
- EMOVAL AND 94
- EPLACEMENT 94
- RELIMINARIES 94
- Table 4-2 95
- 4.1.4 Grounding Workstations 96
- 4.2 Routine Care 97
- Precautions 97
- 4.2.3 Cleaning the Keyboard 98
- 4.2.4 Cleaning the Monitor 98
- 4.2.5 Cleaning the Mouse 98
- 4.3 Service Considerations 99
- 4.3.2 Screws 99
- 4.3.3 Cables and Connectors 99
- 4.3.4 Hard Drives 100
- 4.3.5 Plastic Parts 100
- 4.3.6 Lithium Battery 100
- 5.1 Serial Number 101
- Figure 5-1 101
- Serial Number Location 101
- CAUTION: 103
- 5.4 Feet 104
- Figure 5-2 104
- Installing the Feet 104
- 5.5 Cable Lock 105
- Figure 5-3 105
- Installing the Cable Lock 105
- 5.6 System Unit Cover 106
- Figure 5-4 106
- 5.7 Speaker 107
- Figure 5-5 107
- Figure 5-6 108
- Removing the Speaker 108
- 5.8 Expansion Board 109
- Figure 5-7 109
- Figure 5-8 110
- Figure 5-9 111
- 5.9 System Board Components 112
- Module Upgrade 113
- 5.9.3 Microprocessor 114
- Pentium II System Board 116
- Figure 5-14 116
- 5.9.4 Cache Memory (Pentium 117
- System Only) 117
- 5.10 Riser Board 118
- Figure 5-16 118
- Removing the Riser Board 118
- 5.11 Riser Brace 119
- Figure 5-17 119
- Removing the Riser Brace 119
- 5.12 Expansion Board Guide 120
- Figure 5-18 120
- 5.13 Replacement Battery 121
- Figure 5-19 121
- Figure 5-20 122
- 5.14 Front Bezel Assembly 123
- 5.14.1 Front Bezel 123
- Figure 5-21 123
- Removing the Front Bezel 123
- 5.14.2 Power Button 124
- Figure 5-22 124
- Removing the Power Button 124
- 5.14.3 Bezel Blank 125
- Figure 5-23 125
- Removing the Bezel Blank 125
- 5.14.4 Compaq Logo 126
- Figure 5-24 126
- Replacing the Compaq Logo 126
- 5.15 Power Supply Assembly 127
- 5.15.1 Power Switch Assembly 127
- Figure 5-25 127
- Removing the Power Switch 127
- Figure 5-26 128
- 5.15.2 Power Supply 129
- Figure 5-27 129
- Removing the Power Supply 129
- 5.16 Mass Storage Devices 130
- Figure 5-29 131
- Removing a 3.5-Inch Drive 131
- 5.16.2 5.25-Inch Drive Bays 132
- Figure 5-31 133
- Removing the CD-ROM Drive 133
- Figure 5-32 134
- Locating the Mounting Screws 134
- Figure 5-33 135
- Figure 5-34 135
- Figure 5-35 136
- 5.17 Drive Cage 137
- Figure 5-36 137
- Removing the Drive Cage 137
- 5.18 LED Cable 138
- Figure 5-37 138
- Figure 5-38 139
- 5.19 System Board 140
- Figure 5-39 141
- Figure 5-40 142
- 6.1 Serial Number 143
- Figure 6-1 143
- 6.4 Feet 145
- Figure 6-2 145
- 6.5 Cable Lock 146
- Figure 6-3 146
- 6.6 Exposing the Chassis 147
- 6.6.1 Access Panel 147
- Figure 6-4 147
- Removing the Access Panel 147
- 6.6.2 Minitower J Hood 148
- Figure 6-5 148
- Removing the J Hood 148
- 6.7 Riser Brace 149
- Figure 6-6 149
- 6.8 Expansion Board 150
- Figure 6-7 150
- Figure 6-8 151
- Removing an Expansion Board 151
- Figure 6-9 151
- 6.9 Expansion Board Guide 152
- Figure 6-10 152
- 6.10 Riser Board 153
- Figure 6-11 153
- 6.11 Speaker 154
- Figure 6-12 154
- 6.12 System Board Components 155
- 6.12.2 Microprocessor 156
- Figure 6-15 158
- Figure 6-16 159
- 6.13 System Board 161
- Figure 6-19 161
- Figure 6-20 162
- 6.14 Replacement Battery 164
- Figure 6-22 164
- Figure 6-23 165
- Figure 6-24 166
- 6.16 Front Bezel Assembly 167
- 6.16.1 Front Bezel 167
- Figure 6-25 167
- 6.16.2 Power Button 168
- Figure 6-26 168
- 6.16.3 Bezel Blank 169
- Figure 6-27 169
- Removing the Bezel Blank 169
- 6.16.4 Compaq Logo 170
- Figure 6-28 170
- Replacing the Compaq Logo 170
- 6.17 Power Supply Assembly 171
- Figure 6-29 171
- Figure 6-30 172
- 6.17.2 Power Supply 173
- Figure 6-31 173
- 6.18 LED Cable 174
- Figure 6-32 174
- Figure 6-33 175
- 6.19 Mass Storage Devices 176
- Figure 6-35 177
- 6.19.2 5.25-Inch Drive Bays 178
- Figure 6-37 179
- Removing the CD-ROM Drive 179
- Figure 6-38 180
- Figure 6-39 181
- Figure 6-40 181
- Figure 6-41 182
- UMPER AND 184
- NFORMATION 184
- 7.1 System Board Switches 185
- Figure 7-1 185
- Table 7-1 186
- Figure 7-2 187
- Table 7-2 187
- 7.1.2 Switch Settings 188
- Figure 7-3 188
- Table 7-3 188
- 7.2 System Board Jumpers 189
- Figure 7-5 190
- Figure 7-6 190
- 7.2.2 Clearing Configuration 191
- Figure 7-7 191
- Figure 7-8 191
- Figure 7-9 192
- Figure 7-10 192
- 7.3 Hard Drives 193
- Figure 7-13 194
- Table 7-7 194
- Jumper Settings 194
- Table 7-8 195
- Table 7-9 195
- Figure 7-16 196
- Table 7-10 196
- Figure 7-18 198
- Table 7-12 198
- Figure 7-21 200
- Table 7-15 200
- 7.5 Optional PD-CD Drives 201
- 7.6 Diskette Drive 202
- 8.1 System 203
- Table 8-1 203
- Desktop System Specifications 203
- Table 8-2 204
- Table 8-3 205
- System Interrupts 205
- Table 8-4 205
- System DMA 205
- Table 8-5 206
- System I/O 206
- Continued 206
- Table 8-6 208
- System Memory Map 208
- 8.2 Drives 209
- Table 8-7 209
- 1.44 MB Diskette Drive 209
- Table 8-8 210
- Hard Drives 210
- Table 8-9 211
- Ultra SCSI Hard Drives 211
- Table 8-10 212
- CD-ROM Drives 212
- Table 8-11 213
- PD-CD Drive 213
- Continued 214
- Table 8-12 215
- LS-120 Drive 215
- 8.3 Audio System 216
- 8.4 Keyboard 216
- 8.5 Mouse 217
- 8-16 Specifications 218
- ONNECTOR 219
- SSIGNMENTS 219
- Table A-3 220
- Parallel Interface 220
- Table A-4 220
- Serial Interfaces 220
- Connector Pin Signal 221
- Connector and Icon Pin Signal 221
- Table A-8 222
- Ultra-Wide SCSI Connector 222
- Table A-14 224
- IDE/EIDE Drive Cable 224
- General Requirements 225
- Country-Specific Requirements 226
- Cable Select 227
- Automatic Soft-Drive Types 228
- Table C-1 228
- Soft-Drive Type Assignments 228
- Table C-2 229
- IDE Cable Transfer Rates 229
- Guidelines for Installing 230
- Optional SCSI Devices 230
- Termination 231
- Table E-1 232
- Summary of Test Error Codes 232
- Table E-2 233
- Table E-3 234
- Memory Test Error Codes 234
- Table E-4 234
- Keyboard Test Error Codes 234
- E-4 Diagnostic Error Codes 235
- Table E-9 236
- Hard Drive Test Error Codes 236
- Table E-10 236
- Tape Drive Test Error Codes 236
- Table E-11 237
- Video Test Error Codes 237
- Table E-12 238
- Audio Test Error Codes 238
- Table E-13 238
- Table E-14 239
- SCSI CD-ROM Test Error Codes 239
- Table E-15 239
- SCSI Error Codes 240
- Table E-16 240
- SCSI Device Names 240
- Table E-17 240
- SCSI Test Names 240
- Table E-18 241
- SCSI Test Error Codes 241
- Table F-1 243
- Power-On Self-Test Messages 243
- Checklist for Solving Minor 246
- Problems 246
- Power Problems 247
- Diskette Drive Problems 248
- Table G-3 248
- Display Problems 249
- Table G-4 249
- Printer Problems 250
- Table G-5 250
- Hard Drive Problems 251
- Table G-6 251
- Table G-7 252
- CD-ROM Drive Problems 253
- Table G-8 253
- Memory Problems 254
- SCSI Problems 254
- Network Problems 255
- Table G-11 255
- Resolving Audio 257
- Hardware Conflicts 257
- Table G-12 257
- Audio Interface Settings 257
- IMITATIONS 258
- Table H-1 259
- SDRAM Memory Technologies 259
- Table H-2 260
- Index I-1 261
- I-2 Index 262
- Index I-3 263
- I-4 Index 264
- Index I-5 265
- I-6 Index 266
- Index I-7 267
- I-8 Index 268
- Index I-9 269
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