Model:         IC-32AT

 Division:      Amateur

 Note:          This service bulletin is meant for technical per-
                sonnel with experience working on solid state com-
                munications equipment.  Damage caused by im-
                properly installing this modification may cause
                ICOM to charge for subsequent repairs to the
                product.  ICOM does not warrant this modification.

 Bulletin #:    13889-004

 Date:          May 1, 1989

 Subject:       Elimination of possible faint pulse noise from
                speaker when radio is in power save mode

 Information:   The power save mode employs a circuit which
                creates a high level square wave signal used in
                the power save function.  This modification alters
                the square wave characteristic to eliminate the
                noise.

 Procedure

  1.  Remove the covers from the radio and locate the main board.

  2.  Locate C-749 and replace it with a 2.2 uf 16 V tantalum chip
      capacitor.

  3.  Reassemble the radio, power up and allow the unit to enter
      the power save mode.

  4.  Check to see that the pulse type noise has been eliminated.

  5.  Replace the covers and return the radio to service.


 Bulletin #:    13889-005

 Date:          May 1, 1989

 Subject:       Enable IC-32AT cross band repeater function

 Procedure

  1.  Disassemble the radio so the logic board is able to be
      worked on.

  2.  Cut a lead on D912 or remove it from the board.

  3.  Reassemble the radio.

 Operation

      To enable cross band repeat hold the function switch
      depressed and then depress the C, 6, and D keys in that or-
      der.  Release the function button.

      To disable the cross band repeat function hold the function
      button depressed and then depress the D and C keys.  Release
      the function button.