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(,
C
().
c·
c
c
(
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C
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2.
Make sure the video cable is firmly connected to the logic unit.
Video Cable
Figure
2-30.
Video Cable
3.
Set the
I/o
switch to
I
(On).
4.
Turn the Audible Alarm Volume Control Knob at the back of the logic unit fully
clockwise.
Figure
2-31.
Audible Alarm Control Knob
5.
Set the Test/Normal switch to Test.
6.
Does the Audible Alarm sound?
YES
Return to normal operation.
NO
Replace the logic board.
Go to 3.2, "Logic Unit" on page 3-2.
Chapter 2. Problem Determination Guida
2-25
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