Dell OptiPlex E1 Troubleshooting Manual page 125

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