AT&T PC 6300 - Page 7

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Service Manual
Test Descriptions . . . . . ..... .. s w. . ... . . .. 4-.32
Motherboard Test 4-32
Memory Test 4-33
Keyboard Test . 4-34
^ Video System Test 4-3.5
Parallel Port Test . .: 4-36
' ' Serial Port(s) Test 4-37
48 TPI Floppy Disk Test 4-37
^ HDU Drive and Controller Test 4-38
I Parallel Printer Test 4-39
8087 Math Co-Processor 4^41
Mouse Test 4-41
8530 Test 4-42
I ( Video Option Board Test (DEB [Display Enhancement
Board]) 4-42
A 2nd HDU Drive and Controller Test 4-45
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' > SYSTEM TEST DIAGNOSTICS 4-47
W Loading System Test 4-47
1 Operating Procedures 4-48
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Test Descriptions 4-58
Motherboard Test 4-58
Memory Test. .. ...... .... 4-60
Keyboard Test .. .• 4-62
Video System Test 4-63
Parallel Port Test 4-67
Serial Port(s) Test (Using 8250) 4-69
48 TPI Floppy Disk Test 4-71
MB HDU Drive and Controller Test 4-74
8087 Math Co-Processor 4-77
Parallel Printer Test 4-77
Mouse Test . 4-79
8530 Test 4-80
Video Option Board Test [Display Enhancement Board
(DEB)] 4-80
2nd HDU Drive and Controller Test 4-83