Table of Contents Table of Figures .........................................................................................................................iv Introduction .................................................................................................................................v Product Overview........................................................................................................................1 Product Features .....................................................................................................................2 OmniBook 300, 425, and 430 ...............................................................................................2 OmniBook 530 .....................................................................................................................3 Product Comparisons...............................................................................................................4 Product at a Glance .................................................................................................................6 Troubleshooting...........................................................................................................................9 OmniBook Self-Test...............................................................................................................10 Loop Back Connectors........................................................................................................10 Troubleshooting Flowchart.....................................................................................................12 Main Troubleshooting Flowchart.........................................................................................13 Power Source Problems .....................................................................................................15 Boot-Up Problems ..............................................................................................................18 Display Problems ...............................................................................................................19 Hard Disk Problems............................................................................................................20 Memory Problems ..............................................................................................................23 Power Management Problems............................................................................................25 Pop-Out Mouse Problems...................................................................................................28 Floppy Drive Problems.......................................................................................................32 Parallel Port Problems........................................................................................................35 Serial Port Problems ..........................................................................................................37 PCMCIA Problems .............................................................................................................39 IR Port Problems................................................................................................................43 Hardware Repair .......................................................................................................................45 Battery (End User Replaceable).............................................................................................46 Memory (End User Replaceable) ...........................................................................................48 Hard Disk Drive/Flash Card and System ROM (End User Replaceable).................................50 Mouse (End User Replaceable)..............................................................................................52 Small Parts (End User Replaceable)......................................................................................53 Battery Door.......................................................................................................................53 Battery Door Latch..............................................................................................................53 Blank Modem Door.............................................................................................................53 Memory Door .....................................................................................................................53 I/O Door .............................................................................................................................53 Rubber Feet .......................................................................................................................53 PCMCIA Card Tray.............................................................................................................53 Display (HP Authorized Service Providers Only)....................................................................54 Keyboard (HP Authorized Service Providers Only) ................................................................62 Logic PCA Board (HP Authorized Service Providers Only).....................................................63 Paw Carrier (Paw Active) (HP Authorized Service Providers Only) ........................................65 Other Components (HP Authorized Service Providers Only)..................................................66 Appendix A - Technical and Resource Specifications ................................................................67 Mass Storage Specifications..................................................................................................67 Card Services and Socket Services Version Matrix................................................................67 Memory Map..........................................................................................................................68 Upper Memory Block Space...................................................................................................68 DOS Conventional Memory ...................................................................................................68 Appendix B - Power On Self Test Codes ...................................................................................69 Beep Codes...........................................................................................................................69 Display Codes........................................................................................................................70 Appendix C - Password Policy...................................................................................................75 ii