AT&T PC 6300 - Page 465

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MAINTENANCE
i 1
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ERROR NO. PROBABLE CAUSE
MODULE
540
80 by 25 Mode Paginff Test
failed
Display
Controller
541 40 by 25 Mode Paging Test
Failed
Display
Controller
550 640 by 400 Graphics Mode
Test Failed
Display
Controller
551 640 by 200 Graphics Mode
Test Failed
Display
Controller
552 320 by 200 Graphics Mode
Test Failed
Display
Controller
560 Color Monitor Degauss
Circuit Test Failed
Display
Figure 5-29. Video System Troubleshooting Chart
(Sheet 2 of 2)
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