Roland SERVICE INFORMATION NO 100219-1

                                     JP-6
    
                                    SUBJECT
                                  

                        PROGRAM CHANGE OF PROM 2732A-A
    
           To comply with newest MIDI standard (ver. 1) we have made, a
        program change of PROM 2732A-A IC-26 (15179620) on the CPU BOARD.
        And the PROM with newest program (ver. 4) has been used from the
        serial number 374400.

        NOTE-1
        The program of this PROM 2732A-A has been changed three times
        since JP-6 was introduced, and a relation of the program version
        and the version of MIDI standard is as follows.
        Program ver. 1 : Preliminaly MIDI  : From S/No.250100 - 280799
        Program ver. 2 : Preliminaly MIDI  : From S/No.280800 - 343799
        Program ver. 3 : MIDI ver. 1       : From S/No.353800 - 364399
        Program ver. 4 : MIDI ver. 1       : From S/No. 374400 and up
    
        NOTE-2
        PROM ver. 4 can be substitutive for version 1, 2 and 3 but
        its reverse is not possible. In case of replacing PROM ver. 1
        used in JP-6 with serial numbers 250100 - 260449 with new one
        (ver. 4), it is necessary for you to make a modification (shown
        in the service information No.100217) to JP-6 after the
        replacement. Because there is a difference between old BENDER
        BOARD and now one on JP-6, and also a program of PROM related
        to the circuit has already been completely removed from the
        PROM with ver. 2.
    
        NOTE-3
        The reason why this program change had to be made is
        as follows.

        a)  To prevent a future trouble from happenning between JP-6
            and other new models including other manufactures, we have
            taken a special equipement (which equips with the plural
            voice modules and is operated on MONO mode) into
            consideration.

        b)  It is the best way for JP-6 to have PROM (MIDI function)
            complied with the MIDI standard ver. 1 to lead out to
            other manufacture ones. In other words, this means
            that JP-6 will never have a future trouble between
            new models if they would have been completely designed
            in accordance with the MIDI standard ver. l.