Compaq nx9420 - Notebook PC Spezifikationen Seite 43
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Troubleshooting
Maintenance and Service Guide 2–15
Flowchart 2.5—No Power, Part 4
Y
N
Continued from
“Flowchart
2.4—No Power,
Part 3.”
Reseat loose
components and
boards and
replace damaged
items.
Open
computer.
Loose or
damaged
parts?
Y
Close
computer and
retest.
Power on?
Done
N
Replace the following items (if applicable). Check
computer operation after each replacement:
1. Internal DC-DC converter*
2. Internal AC adapter
3. Processor board*
4. System board*
*NOTE: Replace these items as a set to prevent
shorting out among components.
- Maintenance and Service 1
- Contents 3
- Product Description 7
- 1.1 Features 8
- 1.2 Resetting the Computer 10
- 1.3 Power Management 11
- 1.4 External Components 12
- Right-Side Components 14
- Table 1-2 15
- Table 1-3 16
- Left-Side Components 16
- Rear Panel Components 18
- Table 1-4 19
- Standard Keyboard Components 20
- Table 1-5 21
- Table 1-6 22
- Top Components 22
- Pointing Device Components 24
- Table 1-7 25
- Table 1-8 26
- Bottom Components 26
- 1.5 Design Overview 28
- Troubleshooting 29
- Computer Setup Defaults 31
- Computer Setup Menus 32
- Table 2-2 33
- Security Menu 33
- Table 2-4 35
- System Configuration Menu 35
- Table 2-5 38
- (if applicable) 46
- Connection 58
- Illustrated Parts Catalog 59
- 3.2 Computer Major Components 60
- Major Components 60
- Table 3-1 61
- Table 3-2 75
- Display Assembly Components 75
- 3.4 Plastics Kit 76
- 3.5 Cable Kit 77
- 3.6 Mass Storage Devices 78
- Table 3-6 79
- Spare Part Information 79
- Table 3-7 82
- Preliminaries 93
- 4.2 Service Considerations 94
- Removal and Replacement 101
- Procedures 101
- Disassembly Sequence Chart 102
- (Continued) 103
- Disassembly 104
- Removing the Battery Pack 105
- 5.4 Hard Drive 106
- Removing the Hard Drive Cover 107
- Removing the Hard Drive 108
- Removing the Hard Drive Frame 109
- 5.5 Computer Feet 110
- 5.6 Bluetooth Module 111
- 5.7 External Memory Module 112
- Removing the Memory Module 113
- 5.8 Mini Card Module 114
- Removing a Mini Card Module 116
- 5.9 RTC Battery 117
- 5.10 Optical Drive 118
- Removing the Optical Drive 119
- 5.11 Keyboard 120
- Removing the Keyboard Screws 122
- Releasing the Keyboard 122
- 5.12 Internal Memory Module 124
- 5.13 TouchPad 126
- TouchPad to the computer 127
- Removing the TouchPad 128
- Removing the TouchPad Cable 129
- 5.14 Modem Module 130
- Removing the Modem Module 131
- 5.15 Switch Cover 132
- Removing the Switch Cover 133
- 5.16 LED Board 134
- 5.17 Fan Assembly 135
- 5.18 Processor Heat Sink 136
- Thermal Paste Locations 137
- 5.19 Processor 138
- Removing the Processor 139
- 5.20 Video Board Heat Sink 140
- 5.21 Video Board 144
- Removing the Video Board 145
- 5.22 Display Assembly 146
- Antenna Cables 148
- Removing the Display Assembly 149
- Spare Part Number Information 150
- Removing the Display Bezel 153
- 2 Display panel cable 157
- 3 Backlight cable 157
- Removing the Display Hingesw 158
- 5.23 Top Cover 163
- Removing the Top Cover 165
- 5.24 Speaker 166
- Removing the Speaker 167
- 5.25 System Board 168
- Removing the System Board 171
- 5.26 USB/Audio Board 175
- Removing the USB/Audio Board 176
- Specifications 181
- Table 6-2 183
- 17.0-inch, WUXGA+WVA 183
- Table 6-3 184
- 17.0-inch, WSXGA+WVA 184
- Table 6-4 185
- 17.0-inch, WXGA+WVA 185
- Table 6-5 186
- Hard Drives 186
- Table 6-6 187
- Table 6-7 188
- DVD±RW and CD-RW Combo Drive 188
- Table 6-8 190
- DVD/CD-RW Combo Drive 190
- Table 6-9 192
- System DMA 192
- Table 6-10 193
- System Interrupts 193
- Table 6-11 195
- System I/O Addresses 195
- Table 6-12 198
- System Memory Map 198
- Screw Listing 199
- Table A-2 200
- Phillips PM2.5×17.0 Screw 200
- Table A-3 201
- Table A-4 202
- Phillips PM2.5×4.0 Screw 202
- Table A-5 203
- Phillips PM2.0×4.0 Screw 203
- (Continued) 204
- Torx8 T8M2.5×9.0 Screw 208
- Table A-6 208
- Table A-7 211
- Torx8 T8M2.5×4.0 Screw 211
- Table A-8 217
- Torx8 T8M2.5×19.0 Screw 217
- Table A-9 218
- Torx8 T8M2.5×7.0 Screw 218
- Table A-10 222
- Phillips PM2.5×7.0 Screw 222
- Table A-11 225
- Table A-12 226
- Phillips PM2.0×6.0 Screws 226
- Software Backup and 227
- Recovery 227
- Backing Up the System 228
- Software Backup and Recovery 229
- Creating Recovery Discs 232
- (Highly Recommended) 232
- Performing a Recovery 233
- Recovery Partition 234
- Display Component Recycling 235
- Removing the Display Inverter 239
- Removing the Display Frame 242
- Removing the Backlight Cover 243
- Removing the Backlight Frame 245
- Removing the Backlight 246
- Releasing the LCD Panel 247
- 23. Remove the LCD panel 248
- Connector Pin Assignments 249
- Table D-2 250
- Audio-In (Microphone) 250
- Table D-3 250
- Universal Serial Bus 250
- Table D-4 251
- S-Video-Out 251
- Table D-5 252
- External Monitor 252
- Table D-6 253
- RJ-11 (Modem) 253
- Table D-7 254
- RJ-45 (Network) 254
- Power Cord Set Requirements 255
- General Requirements 256
- Country-Specific Requirements 257
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