Download Epson Equity 386/33 PLUS User`s guide

System diagnostic tests (continued)
Component
Tests
Function
Memory
(continued)
Walking 0
Checks data lines for shorts
and bits that are 0
Address
Checks for address line shorts
Refresh
Checks the refresh interval
Hard disk drives
Hard disk format
Media analysis
Performance
Seek
Read/verify
Check test cylinder
Force bad tracks
See ‘Hard Disk Diagnostics’
Floppy disk
drives
Diskette format
Drive speed
Random read/write
Sequential read/write
Disk change line
See ‘Floppy Disk Diagnostics’
Keyboard
Controller
Tests the keyboard controller
Scan/ASCII code
Tests the scan codes assigned
to the keys
Keyboard clock line
Tests the keyboard clock line
Keyboard data line
Tests the keyboard data line
Adapter
Tests the display adapter
memory
Attribute
Tests the display adapter
attributes
80 x 25 display
Tests the 80 x 25 display
40 x 25 display’
Tests the 40 x 25 display
320 x 200 graphics’
Tests the 320 x 200 graphics
display
640 x 200 graphics*
Tests the 640 x 200 graphics
display
Video
* Test appears only if you have installed a color monitor.
Performing System Diagnostics
B-11