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System diagnostics tests (continued)
Device
Color graphics
adapter and CRT
Tests available
Adapter check
Attribute check
Character set check
Graphics mode check
Screen paging check
Light pen check
Video check
Sync check
Run all above checks
Description
Tests all types
of color monitors
Diskette drive(s)
and controller
Sequential seek check
Random seek check
Write, read check
Disk change check
Run all above checks
Tests operation
of the diskette
drive(s); requires
a formatted
diskette for some
tests
Math
coprocessor
Tests the
operation of the
math coprocessor
Parallel port (printer
interface)
Tests the primary
parallel port;
requires a loop-
back connector
(contact your
dealer)
Serial port
(RS-232C)
Tests the primary
serial port;
requires a loop-
back connector
(contact your
dealer)
Alternate
serial port
Tests the
secondary serial
port; similar to
primary serial port
test
E-10
Performing System Diagnostics