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Performing system diagnostics b-11 – Epson EQUITY 386/33 PLUS User Manual

Page 133

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System diagnostic tests (continued)

Component

Tests

Memory

Walking 0

(continued)

Address

Refresh

Hard disk drives

Hard disk format

Media analysis

Performance

Seek

Read/verify

Check test cylinder

Force bad tracks

Floppy disk

Diskette format

drives

Drive speed

Random read/write

Sequential read/write

Disk change line

Keyboard

Controller

Scan/ASCII code

Video

Function

Checks data lines for shorts

and bits that are 0

Checks for address line shorts

Checks the refresh interval

See ‘Hard Disk Diagnostics’

See ‘Floppy Disk Diagnostics’

Tests the keyboard controller

Tests the scan codes assigned

to the keys

Keyboard clock line

Keyboard data line

Adapter

Attribute

Tests the keyboard clock line

Tests the keyboard data line

Tests the display adapter

memory

Tests the display adapter

attributes

80 x 25 display

40 x 25 display’

320 x 200 graphics’

Tests the 80 x 25 display

Tests the 40 x 25 display

640 x 200 graphics*

Tests the 320 x 200 graphics

display

Tests the 640 x 200 graphics

display

* Test appears only if you have installed a color monitor.

Performing System Diagnostics

B-11