Dell OptiPlex Gn Diagnostics and Troubleshooting Guide (.pdf) - Page 131

technical assistance obtaining, 7-1 warranty repair or credit, 7-5 Test Limits Main menu category, 4-8 Text Mode Character Test, A-1 Text Mode Color Test, A-1, A-8 Text Mode Pages Test, A-1, A-9 troubleshooting audible signs of problems, 1-3 basic problems, 1-1 battery, 6-3 checking connections and switches, 1-2 Diagnostics Checklist, 7-7 diskette drives, 6-9 diskette/tape drive subsystem, 6-9 dropped or damaged computer, 6-2 expansion cards, 6-4 hard-disk drives, 6-14 I/O functions, 5-3 I/O ports, 5-2 keyboard, 5-2 monitor, 5-1 parallel printer, 5-4 SCSI hard-disk drives, 6-15, 6-17 serial I/O devices, 5-4 single diskette-drive system, 6-9 software errors, 3-1 system board, 6-8 system memory, 6-5 tape drives, 6-9, 6-11, 6-12 video subsystem, 6-6 visual signs of problems, 1-3 wet computer, 6-2 where to start, 1-1 TSR programs about, 3-1 problems with, 3-2 typographical conventions, viii V video control circuitry, 4-14 video controller card, 4-14 video functions about, A-1 testing, 4-14 Video Hardware Test, A-1 Video Memory Test, A-1 video subsystem troubleshooting, 6-6 Video Test Group, 4-14 video tests Color Palettes, A-1, A-15 Graphics Mode, A-1, A-10 Solid Colors Test, A-1, A-16 Text Mode Character, A-1, A-6 Text Mode Color, A-1, A-8, A-9 Text Mode Pages, A-1, A-9 Video Hardware, A-1 Video Memory, A-1 W warning messages, 2-13 warnings, viii warranty information, vii warranty repair or credit, 7-5 water damage, 6-2 working inside your computer, safety precautions, 6-1 Index 5