How to use CH Test (switch, knob, button test) Mode on APX Portable (Model 3 only)


Issue

How to access the CH Test (Control Top and Keypad test mode) on APX Portables.

Environment

APX Portable Model 3

Resolution

How to enter Test Mode:

  1. Enter Test Mode on the portable (5 presses of the 2 Dot Side Button upon power up)
  2. Press Top Side Button to advance through the tests (RF Test, CH Test, RGB Test, CIS Test)
  3. Press Top (Emergency) Button when landed on desired test to select test
  4. Press Top Side Button to toggle between CH Test and RF Test.  In CH Test, "CH TEST" will be displayed.CH Test.jpg
  5.  Press and Hold Top (Emergency) Button to test Radio Display Icons, LEDs

 Icons.jpg

How to use CH Test:

  1. Release the Top Button to Test switches and buttons individually.  "148/0" will appear on the display. 
  2. Each switch, knob rotation, and button press will now be tested and graphically represented on the display during the testing. 
    "1" designates a button in "pressed" a state, while "0" designates a button that is NOT pressed.  See the BSM for Control Top Checks/Keypad Checks (for Model 3 only) chart.
  3. Power off radio to return to exit the test.