7.5 Terminal self-test ( + or turn on main switch + )
Service personnel use the terminal self-test to check the individual
components of the operating terminal.
–
RAM test
The RAM test checks the operating terminal’s working memory
(“video RAM”).
On completion of the RAM test the self-test automatically switches
to the EPROM test.
–
EPROM test
The EPROM test checks the controller’s program memory.
–
RAM-card test
RAM-cards are no longer used with the present machine.
–
Keyboard test
The keyboard test checks the operating terminal’s keyboard.
Press any key, and if it is working properly a tick appears beside it
in the display.
Pressing the “ESC” key terminates the keyboard test.
The display switches to the interface test.
–
Interface test
The interface test checks the operating terminal’s interface (a
special cable is required!)
On completion of this test the self-test automatically switches to
the display test.
–
Display test
The display test shows the available character set and graphics.
Pressing function key F2 switches the display to the main screen of
the terminal self-test (see illustration above).
–
Main screen
When the main screen is displayed pressing function key F2
generates a full test report.
To leave the terminal self-test press the “RST”key.
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