4
No
Replace
Keypad
  board
Indication 
 just after
power-up?
  HW BRD
 ABSENT?
 New or unknown
      indication.
  Contact SW for
         detail.
  Power off radio.
  Open radio and
  check the front-
  kit and back-kit
  flex connection
  on keypad board.
  Power on radio.
Yes
Yes
  HW BRD
 ABSENT?
 BT ON
FAILED?
No
No
 Clear All
  Pairing
  Failed?
Yes
No
     If BT on/off soft - key or
    pressing ‘CLR’ key in BT
menu triggers message, reload
        radio SW and retry.
Yes
Yes
  Clear All
   Pairing
   Failed?
Replace
Keypad
  board
Yes
   Try to enable BT again. If no
 button is programmed to turn BT
on, use CPS to set a menu item to
turn it on. Recycle radio and retry.
No
 BT ON
FAILED?
No
5
 Reload SW in
    APX radio.
Enable BT and
  recycle radio
      power.
No
No
Yes
 BT ON
FAILED?
Yes
Replace
Keypad
  board