Epson 486SX User Manual page 194

System diagnostics tests (continued)
Device
Monochrome
display adapter
and CRT
Color graphics
adapter and CRT
Diskette drive(s) and
controller
Math coprocessor
Parallel port (printer
interface)
Serial port (RS-232C)
Alternate serial port
Tests available
Adapter check
Attribute check
Character set check
Graphics mode check
Screen paging check
Video check
Sync check
Run all above checks
Adapter check
Attribute check
Character set check
Graphics mode check
Screen paging check
Light pen check
Video check
Sync check
Run all above checks
Sequential seek check
Random seek check
Write, read check
Disk change check
Run all above checks
Performing
Description
Tests all types of
monochrome monitors
Tests all types of color
monitors
Tests operation of the
diskette drive(s):
requires a formatted
diskette for some tests
Tests the operation of
the math coprocessor
Tests the primary
parallel port: requires a
loop-back connector
(contact your dealer)
Tests the primary serial
port; requires a
loop-back connector
(contact your dealer)
Tests the secondary
serial port; similar to
primary serial port test
System Diagnostics C-9