ADT 6270ADT, Installation And Setup Gude

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SECTION 7: Troubleshooting
7–3
SCREEN ACTION
Performing Diagnostics
Select any diagnostic test from the Diagnostics screen by pressing its
associated
Test button. All or any individual test may be run when
you access the Diagnostics screen; however, each test must be
performed one at a time.
At any time when a test is not being performed, you can press:
x the back button to return to the previous screen, or
x
the home button to return to your home page.
Once the Diagnostics screen is exited, subsequent entry to this screen
displays all test options as "Not Performed."
LCD Display Test
Perform the LCD Display Test as follows:
SCREEN ACTION
1. When you press the Test button
associated with the LCD Display Test, a
pop-up "Confirmation Window" is
displayed in the center of the screen with
an all black background. Within the
Confirmation Window the question "Is
Screen Background Black?" is displayed.