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Chapter 8. Servicing the PT878
188 Transport® Model PT878 Portable Liquid Flowmeter User’s Manual
8.10.1 Testing the Screen
To test the proper functioning of the PT878 screen, scroll to the Test Screen
option in the Test Menu and press
[ENTER]. The screen then shows the
message, “Press Any Key To Continue.” Once you press a key, a screen
with a checkerboard pattern appears, as shown in Figure 124 below.
Figure 124: Functioning Test Screen
Pressing a key two more times should result in two more checkerboard
patterns, followed by a series of dark and light screens. Pressing the key
through this sequence should return the PT878 to Operate Mode. If the test
does not proceed according to this sequence, please consult the factory.