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Chapter 8. Servicing the PT878
Transport® Model PT878 Portable Liquid Flowmeter User’s Manual 189
8.10.2 Testing the Keys
The Test Keys option checks the functioning of the various keys on the
keypad. To start the test, scroll to the Test Keys option on the Test Menu and
press
[ENTER]. The screen appears similar to Figure 125 below. Press any
key on the keypad, and a window representing that key should darken.
Figure 125: Test Keys Window
Pressing the
[F3] key returns the meter to the Operate Mode. If any key does
not appear on the screen, contact the factory.
Note: The power key does not appear.