HP Pro 3400 Maintenance And Service Manual page 8

Power Switch .................................................................................................................................... 109
Front USB Assembly ........................................................................................................................ 111
Fan Assembly ................................................................................................................................... 114
Fan Sink ........................................................................................................................................... 116
Processor ......................................................................................................................................... 118
Power Supply ................................................................................................................................... 120
System Board ................................................................................................................................... 122
Battery .............................................................................................................................................. 124
Appendix A Power Cord Set Requirements ................................................................................................ 126
General Requirements ..................................................................................................................... 126
Japanese Power Cord Requirements .............................................................................................. 126
Country-Specific Requirements ........................................................................................................ 127
Appendix B POST Error Messages .............................................................................................................. 128
POST Numeric Codes and Text Messages ..................................................................................... 129
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes .............................................. 137
Appendix C Password Security and Resetting CMOS ............................................................................... 141
Resetting the Password Jumper ...................................................................................................... 142
Clearing and Resetting the CMOS ................................................................................................... 142
Appendix D Troubleshooting Without Diagnostics .................................................................................... 144
Safety and Comfort .......................................................................................................................... 144
Before You Call for Technical Support ............................................................................................. 144
Helpful Hints ..................................................................................................................................... 145
Solving General Problems ................................................................................................................ 147
Solving Power Problems .................................................................................................................. 151
Solving Hard Drive Problems ........................................................................................................... 153
Solving Media Card Reader Problems ............................................................................................. 156
Solving Display Problems ................................................................................................................. 158
Solving Audio Problems ................................................................................................................... 163
Solving Printer Problems .................................................................................................................. 165
Solving Keyboard and Mouse Problems .......................................................................................... 167
Solving Hardware Installation Problems ........................................................................................... 169
Solving Network Problems ............................................................................................................... 171
Solving Memory Problems ............................................................................................................... 174
Solving Processor Problems ............................................................................................................ 176
Solving CD-ROM and DVD Problems .............................................................................................. 176
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Removing the Hard Drive ................................................................................ 105