Service Manuals, User Guides, Schematic Diagrams or docs for : JBL Audio PRX-535 PRX Series Input Board Schematics

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PRX Series Input Board Schematics


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        4
    +
3
            1
    -
2       8


                                                                                                                                       4
                                                                                                                                   +
                                                                                                                               3
                                                               2        8                                                                  1
                                                                   -                                                               -
                                                                              1                                                2       8
                                                               3
                                                                   +                                               6
                                                                        4                                              -
                                                                                                                           7                               +
                                                                                                                                                       5
                                                                                                                   5                                               7
                                                                                                                       +
                                                                                                                                                           -
                                                                                                                                                       6




                                                                                                                                       4
6                                                                                                                                  +               +
    -                                                                                                                          3               5
            7                                                                                                                              1                   7
5                                                                                                                                  -               -
    +                                                                                                                          2       8       6




                                                                                                                                                                       Thru Outputs



Configuration Amplifier                 DSP Channels                  DSP Channels to J10 Pins
FR1                   LF, HF               1, 2                     Ch1 to 2&3, Ch2 to 8&9, Ch3 to 5&6
FR2                   LF, MF, HF           3, 2, 1                  Ch3 to 2&3, Ch2 to 5&6, Ch1 to 8&9
SW1                   LF                   1                       Ch1 to 2&3, Ch2 to 8&9, Ch3 to 5&6
----------------------------------------------------------------------------------------------------------------
Amplifier to J10 Pins              LF to 2&3, MF to 5&6, HF to 8&9

                                                                                        1
                                                                            J10         2
                                                                       AMP CON          3
                                                                                        4
                                                                                        5
                                                                                        6
                                                                                        7
                                                                                        8
                                                                                        9
                                                                                        10
                                                                                        11
                                                                                        12
                                                                                        13
                                                                                        14
                                                                                        15
                                                                                        16
                                                                                        17
                                                                                        18
                                                                                        19
                                                                                        20
           2           8
               -
                           1
           3
               +
                       4




                                                            High gain (244), BW=1Khz with output offset approx +1V




                                                                                                      Signal present LED (Green)
               6
                   -
                               7                                                     6
                                                                                         -
               5                                                                             7
                   +
                                                                                     5
                                                                                         +                           D2




           2           8
               -
                           1
           3
               +
                       4
                                                  This is a comparator configuration. Monitors the ADC input (CLPADC)
                                                  and when near saturation (+/- 1.20V pk) outputs a square wave
                                                  The threshold is set by the resistor network at the (+) input
From DSP
                                   To Connector



                                                                                                          D1

               6
                   -
                               7                                                 4
                                                                             +
               5                                                         3
                   +
                                                                                     1
                                                                             -
                                                                         2       8

                                                                                                   Clip LED (Yellow)




           2           8
               -
                           1
           3
               +
                       4




               6
                   -
                               7
               5
                   +
Short Pins 1&2 , 3&4




                       To DSP



                                From Audio Input




    From CPU
            To DSP


To Relays




            To ADC



            To AMPLIFIER
           To Analog Outputs



From CPU




From ADC



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