RP3010

 Model:         IC-RP3010

 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 #:    10789-001

 Date:          April 18, 1989

 Subject:       When the power is applied to the repeater the
                CTCSS is enabled automatically.  If it is desired
                to disable the CTCSS at power up this modification
                may be made to the repeater.

 Information:   On the control unit IC8 is a dual D type of latch.
                The Q and not Q outputs on this IC control the
                CTCSS enable line.  To disable the CTCSS encoder
                at power up or system reset pins 12 and 13 on IC8
                must be exchanged.

 Procedure

  1.  Remove the control board from the chassis.

  2.  Cut the trace going from R20 to pins 9 and 12 on IC8.

  3.  Cut the trace going from J2 to pin 13 on IC8.

  4.  Add a jumper wire from the land cut on R20 to pin 13 on IC8.

  5.  Add a jumper wire from the cut trace on J2 to pins 9 and 12
      of IC8.

  6.  Reinstall the control PCB back in the chassis.

 Operation

      After this modification is made A125 will turn the CTCSS on
      and A126 will turn the CTCSS off.