Servicing the PT878GC
9-37
April 2009
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 9-22 below. Press any key on the keypad, and a window
representing that key should darken.
Figure 9-22: The Test Keys Window
Pressing the
[F3]
key returns the meter to the Operate Mode. If
any key does not appear on the screen or does not darken when
pressed, contact GE Sensing.
Note:
The power key does not appear in this test.