HP nw8440 User Manual Page 37
- Page / 237
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
Troubleshooting
Maintenance and Service Guide 2–11
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
- 3 Illustrated Parts Catalog 4
- Product Description 7
- 1.1 Features 8
- 1.2 Resetting the Computer 10
- 1.3 Power Management 11
- 1.4 External Components 12
- Table 1-2 14
- Right-Side Components 14
- Table 1-3 15
- Rear Panel Components 15
- Table 1-4 16
- Left-Side Components 16
- Standard Keyboard Components 18
- Table 1-5 19
- Table 1-6 20
- Top Components 21
- Table 1-7 22
- Bottom Components 24
- Table 1-8 25
- 1.5 Design Overview 26
- Troubleshooting 27
- Selecting from the File Menu 28
- Table 2-2 29
- Security Menu 29
- Selecting from the Tools Menu 30
- Table 2-5 31
- (if applicable) 40
- Connection 52
- Illustrated Parts Catalog 53
- 3.2 Computer Major Components 54
- Major Components 54
- Table 3-1 55
- 3.3 Plastics Kit 68
- Table 3-2 69
- Plastics Kit 69
- Spare Part Number Information 69
- 3.4 Mass Storage Devices 70
- Table 3-3 71
- Mass Storage Devices 71
- Table 3-4 72
- Spare Part Information 72
- Table 3-5 74
- Removal and Replacement 83
- Preliminaries 83
- 4.2 Service Considerations 84
- Procedures 91
- 5.1 Serial Number 92
- Disassembly Sequence Chart 93
- Disassembly 95
- 5.4 Hard Drive 96
- Removing the Hard Drive Cover 97
- Removing the Hard Drive 98
- Removing the Hard Drive Frame 99
- 5.5 Computer Feet 100
- 5.6 Optical Drive 101
- 5.7 External Memory Module 103
- 5.8 Bluetooth Module 106
- 5.9 Keyboard 108
- (Continued) 109
- Removing the Keyboard Screws 110
- Releasing the Keyboard 111
- 5.10 Fan Assembly 113
- Removing the Fan Assembly 114
- Replacing the Thermal Paste 115
- Removing the Thermal Plate 116
- 5.11 Heat Sink 118
- Removing the Heat Sink 119
- 5.12 Processor 121
- Removing the Processor 122
- 5.13 Internal Memory Module 123
- 5.14 RTC Battery 125
- 5.15 TouchPad 126
- Releasing the TouchPad 127
- 10. Remove the TouchPad 2 128
- 5.16 Mini Card Module 129
- Removing a Mini Card Module 131
- 5.17 Switch Cover 132
- Releasing the Switch Cover 133
- Removing the Switch Cover 134
- 5.18 Display Assembly 135
- Removing the Display Assembly 138
- 5.19 Top Cover 139
- Removing the Top Cover 142
- 5.20 Modem Module 143
- Removing the Modem Module 144
- 5.21 System Board 145
- 4. Remove the following: 148
- 1 Two Torx T8M2.5×6.0 screws 148
- 2 Two Torx T8M2.5×4.0 screws 148
- Removing the System Board 151
- 5.22 System Board Frame 152
- Remove the System Board Frame 153
- Removing the Modem Cable 154
- 5.23 Serial Connector Module 155
- 5.24 USB/Audio Board 157
- Removing the USB/Audio Board 158
- Specifications 159
- Table 6-2 161
- 15.4-inch, WUXGA+WVA 161
- Table 6-3 162
- 15.4-inch, WSXGA+WVA 162
- Table 6-4 163
- 15.4-inch, WXGA+WVA 163
- Table 6-5 164
- Hard Drives 164
- Table 6-6 165
- Table 6-7 167
- DVD/CD-RW Combo Drive 167
- Table 6-8 169
- DVD-ROM Drive 169
- Table 6-9 170
- System DMA 170
- Table 6-10 171
- System Interrupts 171
- Table 6-11 173
- System I/O Addresses 173
- Table 6-12 176
- System Memory Map 176
- Screw Listing 177
- Table A-1 178
- Phillips PM3.0×3.0 Screw 178
- Table A-2 179
- Table A-3 180
- Table A-4 181
- Torx8 T8M2.5×4.0 Screw 181
- Table A-5 185
- Phillips PM2.0×3.0 Screw 185
- (Continued) 186
- Table A-6 187
- Phillips PM1.5×3.0 Screw 187
- Table A-7 188
- Torx8 T8M2.5×10.0 Screw 188
- Table A-8 191
- Table A-9 192
- Table A-10 193
- Phillips PM2.0×4.0 Screw 193
- Table A-11 194
- Phillips PM2.0×2.0 Screw 194
- Table A-12 196
- Phillips PM2.5×4.0 Screw 196
- Table A-13 197
- Hex HM5.0×12.0 Screw Lock 197
- Table A-14 198
- Torx8 T8M2.5×6.0 Screw 198
- Software Backup and 199
- Recovery 199
- Backing Up the System 200
- Software Backup and Recovery 201
- Creating Recovery Discs 204
- (Highly Recommended) 204
- Performing a Recovery 205
- Recovery Partition 206
- Display Component Recycling 207
- Removing the Display Bezel 210
- Removing the Display Inverter 211
- Removing the Display Frame 214
- Removing the Backlight Cover 215
- Removing the Backlight Frame 217
- Removing the Backlight 218
- Releasing the LCD Panel 219
- 23. Remove the LCD panel 220
- Connector Pin Assignments 221
- Table D-2 222
- Audio-In (Microphone) 222
- Table D-3 222
- Universal Serial Bus 222
- Table D-4 223
- S-Video-Out 223
- Table D-5 224
- External Monitor 224
- Table D-6 225
- RJ-11 (Modem) 225
- Table D-7 226
- RJ-45 (Network) 226
- Power Cord Set Requirements 227
- General Requirements 228
- Country-Specific Requirements 229
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