ALLEN & HEATH DR128 Service Manual
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ALLEN & HEATH DR128 Service Manual

ALLEN & HEATH DR128 Service Manual

12 in 8 out 24-bit digital mix processor
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DR
128
12 I
8 O
N
UT
24-B
D
IT
IGITAL
M
P
IX
ROCESSOR
SERVICE
MANUAL
AP2974
PUBLICATION

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Summary of Contents for ALLEN & HEATH DR128

  • Page 1 12 I 24-B IGITAL ROCESSOR SERVICE MANUAL AP2974 PUBLICATION...

  • Page 2: How To Use This Manual

    Section B: contains the SERVICE INFORMATION which includes details of SERVICE PROCEDURES, SPARE PARTS & ASSEMBLIES and CIRCUIT BOARD DIAGRAMS for the copyright © 1997 ALLEN & HEATH. All rights reserved Publication ..... AP2974 Issue 1 DR128 S ERVICE ANUAL...
  • Page 3 SECTION A INSTALLATION / USER GUIDE CAUTION Refer all installation, calibration and service work to qualified service personnel DR128 S ERVICE ANUAL...
  • Page 4 Limited One Year Warranty                                                            !             "                #      $  !            !        ...
  • Page 5 '  ( Section 2 - DR128 Overview   )  #   )   ) *     +      # ,  #   +  , " +   & Section 3 - Using the DR128 # %  - ./ 0 -   - # 1  2 # 1 3  ) # 1 ,   )     +   + 4  !    + 4  ! '54  ...
  • Page 6 /94   - "/94 8  2 &/, 4    ) (/%0    -/  2/8  )/,    /8,    /   5,   " /# 1   & /+ 4 1   - "/%  0 2 &/0 ") (/,% ") -/9 !! ") 2/   " Section 6 - Appendix .  :      "         ""    %+ "& +    ! &) DR128 U UIDE...
  • Page 7 Introduction 1 Introduction                         !   "  #    !   $   % &  ' DR128 U UIDE...
  • Page 8  /    ..      WARNING TO THE USER, INSTALLATION, SERVICE ENGINEER Allen & Heath warns that any unauthorised changes or modifications to the DR128 unit may invalidate the legal compliance of the unit and could void the user's authority to operate the equipment.
  • Page 9 SAFETY WARNING Mains electricity is dangerous and can kill. Mains voltage is present within the DR128. Do not remove the top cover with the mains connected. Do not carry out any work within the unit while it is powered except for installation calibration. High voltage components are insulated for safety but should not be touched with power applied.
  • Page 10     1     1        5 5     5     .  ..      !..   1 .  .           5   ..  Precaution To avoid damage to the internal assemblies do not fit screws through the sides or underside of the unit. Secure to external brackets or fittings through the front panel rack mounting holes. DR128 U UIDE...
  • Page 11 Fuse 100V AC T1.6A 120V AC T1.6A 220V AC T630mA 230V AC T630mA      .       .    .    .          ( .    . +  5  1   .               7   .             DR128 U UIDE...
  • Page 12      !"#  $%"     $         1                       9..!+. 7  ( .   -     $ 2      6< Remove all power to the DR128 when replacing the fuse &'  DR128 U UIDE...
  • Page 13 &   "       %99    .        1         $() *          .  .  .       1 . & $     " $      .. 1        .1  5 1    1  1  BC    5  =DC( > 9#  =DC(  )>           1  C      1     5 9#  $() * & "  '  $       5      1  @  DR128 U UIDE...
  • Page 14 8 Introduction          DR128 U UIDE...
  • Page 15 DR128 Overview 9 DR128 Overview                    !"  #!$   $  %&"'    ($  )*&  !   (  ( +,-  ( #+# (  '  ( %   (...

  • Page 16: Main Features

    10 DR128 Overview Introduction /0 " .    1 .  "   2  3    4    /0 54  3         0      6   4  3  3 1 7        8 29:0; " 1  4 ; 5 <%=   ...

  • Page 17: Basic Principles

    DR128 Overview 11 Basic Principles /0" .4    0    4   0      0 0+6 2" /0       0  00    4 "       &  4   *  0 0+6 "2   0 "       &  0   0 " .  5     /0 " . "    & A&F4 0B /04 & 0  3504   5...
  • Page 18 &3 4  0 0  # &    4 #  44   /0   5 DR128 Configuration Resource Palettes Basic DR128 Basic DR128 + one DSPx Expander card Basic DR128 + two DSPx Expander cards 2 4   0:4; " 45 "  * 0   0 ; "0...
  • Page 19 DR128 Overview 13 DR128 U UIDE...

  • Page 20: Front Panel

    14 DR128 Overview Front Panel /0 " .F         0  3      40 143  440 0   0  6 6 1       $    /0*1 G 5 00#+&"   4    0 5 0     H  0    0 (...
  • Page 21 DR128 Overview 15 DR128 U UIDE...

  • Page 22: Rear Panel

    16 DR128 Overview Rear Panel Battery Input I   4@"!   /0 5  4" .  04 54  Sys-Net Option /0   443   RS-232 <+   "+/ 4       !   ; "   45  2 <+5   <+5  %+5 4 J ++ F    6 4 !  ; 0...

  • Page 23: Using The Dr

    Using the DR128 17 Using the DR128 Contents                      !  "   #  $ # % "&  $ # % "& '(% $ )  *# % "&  $ DR128 U UIDE...

  • Page 24: Front Panel Display

    18 Using the DR128 Front Panel Display )  *  # ! &    + & *% *  DR128 Ver 1.00 Please Wait ,          + %&    %-  ,  &     + -   &   #     *  *- +   % )        %   ! &    + & * 01 Patch 01 Wednesday 11:59 ,   + ! &     %- .% , %- & -      - +   #&  ++, -%  &      , %  Auto-Peak /     +   #0           &  -     1 +  &   & *% *  -% ...

  • Page 25: Function Keys

    Using the DR128 19 "#    -  + *   * )  #    *%   &    -     , %% 9 &    + & *  * 8  35!   35!    *  !  6 (   %    *     *  "#   *%    * "%  #  *        +  % & -        &    + & *  * 8  3:5! .%  .%     *%   # %   *%   ! )    *  "  ' ...
  • Page 26 20 Using the DR128   ,    -           *     3  , % %  -  &  %  %+ * - ?  +%        ,       -           +   7   % %    ,   -        *  ,     + *  *" 6 " * 27   + &       + + *   * - & Function Key Unused ,     )  +     !     + & *8...
  • Page 27 Using the DR128 21 , -%  + !    & -*   +   ,       - *    " %  1 +         *        % 1  *         + & *8 Mic 1 Lev 55 @         - *      3+   -  *   !*             *   ' +   &         -4  3+       &    & ...
  • Page 28 22 Using the DR128 @     %  %%    -    $4 Mic 1 Lev 35 </= @   %( %%  -  C4 Mic 1 Lev 75 <4/=   )  *     '   -    &     *  %   B     *     #      *   ...
  • Page 29 Using the DR128 23 Patch Recall   - *%%       + 7    % %  (%  +  & + *   1 *    &    + & *8  &  Loading Loaded ! 01 Patch 01 01 Patch 01 + &  ! &  %  Remote Switches  & + %  ,           #0  #    +   *     %  %%    &   # %  &    - + *    %  +                +%  + & *  8...
  • Page 30 24 Using the DR128 .    +  ,    -    -    )    &     &  &   "& 3  <  = !%%  < =%+   - -      &   ,  (%  - & &  &  &    -        #       +  3  5 !   (%  # %  "&   &  -  + *    5   3    5 !  1  # % "&  5    5! ...

  • Page 31: Hardware Configuration

    Hardware Configuration 25 Hardware Configuration                       ! " #$  " #$ DR128 U UIDE...

  • Page 32: Signal Levels

    Line Out PCB clockwise Output Sensitivity Internal trimmer on +4dBu sensitivity Trimmer fully anti- Line Out PCB clockwise  & ()$       * +   ,   ,*      Signal Levels - &       -()  .  & &/ "   0  *1 & &. * ,   "   / & 2(        Green on at -36 dBFS on at -6 dBFS % 3!4  5    ( 6 0/ .&   *   7! ,  DR128 U UIDE...
  • Page 33 6         7!   &      <7 !     ! = 6  ,    , * &   . ,  >,  /    *,*. / <= <;)#$=   Setting Mic/Line Input Gain 2&;)          &    6?    &       &               ,*        .  .    6   &*  6     , &&&          !  <.   = Anti-Clockwise Clockwise Mic Gain (dB) Line Gain (dB) DR128 U UIDE...

  • Page 34: Phantom Power

      && &        *    2    ,                 A   /   * *  ,    2 . ,  ,   6 ,         ?  .  )               . 6     %! 6  &    , ' DR128 U UIDE...

  • Page 35: Line Inputs

          & %( *  1 6   1     )    C 1   +          ,    ,*   87!  6      ,,    ,      ,*                    , DR128 U UIDE...
  • Page 36 6       * &*          %!1  &        */. (  5  & Caution Do not attempt to force the gain trimmers as they can easily be damaged. 6    *   &*   /$3!: < 5 * /!1 5 = 6    *    , &&&     Anti-Clockwise Clockwise Sensitivity (dBu) Gain (dB) DR128 U UIDE...

  • Page 37: Balanced Outputs

       C 1   +   +      1          5      1  ,    ,*       /$3!:  6      ,,    ,      ,*                      , DR128 U UIDE...
  • Page 38     %!       &               *. (  5  & Caution Do not attempt to force the gain trimmers as they can easily be damaged. 6    * &* 87! 6    *    ,  &&&     Anti-Clockwise Clockwise Sensitivity (dBu) Gain (dB) DR128 U UIDE...

  • Page 39: Setup Menu

     %('" )  * %  + # ,-  &  ) ( + *"  (*"  $ '  *"    . /    !%/ &  ,01- +  '"- + # *',' + &   )    DR128 U UIDE...
  • Page 40 *** Setup *** PASSWORD:“????” 9-"0 7 2% 70 "" "7  2 0  *', "" "0"" %" % *** Setup *** Password Wrong! 0 0 % ""3 " * * * S e t u p * * * * 1 R e c a l l P a t c h DR128 U UIDE...
  • Page 41 Exit Setup SAVE CHANGES: Y "< ( - 2  0 "<  ""3%0%3  Save setup, exit PATCH: 1 ON 9   -  "    2 "    %3  "" 3   (3  2  Save setup, exit SAVING PATCH 1 0"(%  ""%   " "" ",!$&00 2  ""3 " DR128 U UIDE...
  • Page 42 [1..12] [1..3] [0dB..-60dB] [1dB..60dB] [1db/s.. 100dB/s] [On/Off] Limiter O/P Channel Threshold Response [1..8] [-1dB..-30dBFS] [Slow, Med, Fast] Name Output [Output Name] Name Input [Input Name] Name Patch [Patch Name] [Patch Number] Save Patch Recall Patch [Patch Number] DR128 U UIDE...
  • Page 43 * 2 S a v e P a t c h P A T C H : 1 ( ""3 0 * 2 S a v e P a t c h  "   2 P A T C H : 2 O N  2  ""-0  DR128 U UIDE...
  • Page 44 2  % %       0  $  '"  %   &  " 00 -3 "'" ""7   '" %   "    "  0  *',  >   ""  2 %  "  "   "  1 ,!  2 0""%= 47= $47=* )4 DR128 U UIDE...
  • Page 45 * 5 N a m e O u t p u t "( '"%37 * 5 N a m e O u t p u t 0%&  O/P CHANNEL: 1  2 % *5 Name Output 1 NAME: “O/P 1 ” 9-"" 7 2%  < '%  1""  2 DR128 U UIDE...
  • Page 46 * 6 L i m i t e r " ('" O/P CHANNEL: 1 2 2 9- *6 Limiter O/P 1 "* %  (;(.. 2 ACTIVE: O F F  2 9- *6 Limiter O/P 1 "2" "" 2 THRESHOLD: 0dB  2 DR128 U UIDE...
  • Page 47 2 ,- !" % %        -  "  ""     %" "" 0  ""         3"  2"  A"     ?   0% ?  B""C++?B0"C 0? DR128 U UIDE...
  • Page 48 THRESHOLD:  2 9- ",- * 7 D u c k e r I / P 1 , 2 DEPTH: -1dB 9- * 7 D u c k e r I / P 1 ",- !" RELEASE: 1dB/s  2 DR128 U UIDE...

  • Page 49: Input Phase

    * * * S e t u p * * * * 9 O / P P h a s e 9- * 9 O / P P h a s e "( '" O/P CHANNEL: 1  2 DR128 U UIDE...

  • Page 50: Input Level

    * 1 0 I / P L e v e l 9- * 1 0 I / P L e v e l " '" I/P CHANNEL: 1  2 9- * 1 0 I / P 1 L e v e l ""0% +++ 2 LEVEL: 100  2 DR128 U UIDE...

  • Page 51: Output Level

    * 1 1 O / P L e v e l "( '" O/P CHANNEL: 1  2 9- * 1 1 O / P 1 L e v e l ""0% +++ 2 LEVEL: 100  2 12 - Crosspoint Matrix Levels 2""0$&'    3>   % % 2""3 0%+++ 0 23"3"  """ ?  DR128 U UIDE...
  • Page 52 * 1 3 S o f t K e y s 9- * 1 3 S o f t K e y s ".  / 2 KEY NUMBER: 1 2% % ". /4>3 23:% % ""0 " 9- *13 Key 1 Func. ".  / 2 Fn: UNUSED DR128 U UIDE...
  • Page 53 *13 Level Key 1 ";'" *"" I/P Channel: 1  2 9- *13 Level Key 1 "  %% 2 %* % 0%+ MIN LEVEL: ++ 2 9- *13 Level Key 1 " %% 2 %* % 0%+ MAX LEVEL: 100 ++ 2 Function Key - Patch Select 0. /  " %"  ""03 . /- "%37 2""  DR128 U UIDE...
  • Page 54 * * * S e t u p * * * *14 Remote Keys 9- *14 Remote Keys "!% / 2 KEY NUMBER: 1 2% % "!%/4>3 23:% % ""0 " Remote Key - Unused 9- *14 Key 1 Func. "!% / 2 Fn: UNUSED DR128 U UIDE...
  • Page 55 *14 Level Key 1 "  %% 2 %* % 0%+ MIN LEVEL: ++ 2 Remote Key - Patch Recall 0  !% /       !""7   %"    %"  !%/ """"%3" 9- *14 Key 1 Func. " %3"" PATCH: 1  2 DR128 U UIDE...
  • Page 56 9   %  >  *',  0  00 %3  "        " A"3+B" C+B-C 20""   2*', * * * S e t u p * * * ' *17 LCD Contrast 9- *17 LCD Contrast >  2 CONTRAST: 3 DR128 U UIDE...
  • Page 57 NEW: “ ????” 19 - Security 2 % %  0((..  " %  E  % %   043 0 =DDDD4 03 ""            2 * * * S e t u p * * *    *19 Set Security *19 Set Security PASSWORD:“????” DR128 U UIDE...
  • Page 58 52 Setup Menu 9-"0 9 2%  *19 Set Security SECURITY: ON 9- 0%((.. Forgotten Password?                                  DR128 U UIDE...
  • Page 59 Appendix 53 Appendix                DR128 U UIDE...
  • Page 60 The unit shall weigh no more than 10kg in a 2U rack-mount chassis. The chassis shall be constructed from zintec steel and feature a removable top for configuration of internal jumpers and presets. The unit shall be the Allen & Heath DR128 digital mix processor. DR128 U UIDE...

  • Page 61: Technical Specifications

    220 VAC Fuse: T630mA 230 VAC Fuse: T630mA Power Consumption 70 VA maximum Weight Packed 10 kg Unpacked 9.5 kg Dimensions 482 x 380 x 89mm (rack mounting brackets fitted) Options DSPx DSP Expander DSPd Delay Expander DR128 U UIDE...
  • Page 62 Control Panel Add/Remove Programs $  Start/Settings Installing WinDR from 3½” discs.  % &  ' $ (      $ ) (    8   =    4  7          ,     )+ ! =   7  $) !   456  '  7 / " :$  $     '     Start 4   $    ',   Next DR128 U UIDE...
  • Page 63 Finish IMPORTANT Before running the WinDR application you MUST update the DR128/DR66's System Software to the same version using the 'DR128 System Update'/'DR66 System Update' utility. Run the 'Code Update Procedure' Help file in the WinDR program group for information on how to do this.
  • Page 64 58 Appendix Installing WinDR from the internet.  % &  ' $ (      $ ) (    89   =  )  $   % & )          ,     )+ 4 >    =     % & )     +     "          !"#  DR128 U UIDE...
  • Page 65          !"#  IMPORTANT Before running the WinDR application you MUST update the DR128/DR66's System Software to the same version using the 'DR128 System Update'/'DR66 System Update' utility. Run the 'Code Update Procedure' Help file in the WinDR program group for information on how to do this.
  • Page 66 $  = '          )       ) :  $/  $  !"#   $/   / >        7   ?   )  7  $7 @"     )    Reset Normal Password Operation    !"#,       7      ,     )    ABBBB    '   C::       $/  7 )     / =  7     ,         $     DR128 U UIDE...
  • Page 67 Warning to the Service Engineer Allen & Heath warns that any unauthorised changes or modifications to the unit may invalidate the legal compliance of the unit and could void the user's authority to operate the equipment. DR128 S ERVICE ANUAL...

  • Page 68: Table Of Contents

    REMOVING THE FRONT PANEL CIRCUIT BOARD ASSEMBLY (inc LCD display) ....6 REMOVING THE POWER SUPPLY CIRCUIT BOARD ASSEMBLY ........7 ORDERING A DR128 UNIT, OPTIONS & SPARE ASSEMBLIES ..........8 ORDERING SPARE PARTS ....................9 - 10 TRANSFORMER & POWER WIRING ..................11 PSU CIRCUIT BOARD COMPONENT IDENT .................

  • Page 69: Introduction, Service And Technical Support

    When handling (PCBs), hold them by their edges and avoid touching the circuitry. Do not slide (PCBs) or ICs over any surface. Avoid having plastic, vinyl and foam in your work area. Limiting your movements during service work reduces static electricity. DR128 S ERVICE ANUAL...

  • Page 70: Removing A Connector Circuit Board Assembly (Upper & Lower)

    To refit the connector circuit assemblies, follow the above procedure in reverse order. Make sure all harnesses are correctly aligned and plugged on. Test for correct operation. DR128 S ERVICE ANUAL...

  • Page 71: Removing The Microprocessor (Cpu) Circuit Board Assembly

    To refit the microprocessor circuit assembly follow the above procedure in reverse order. Make sure all harnesses are correctly aligned and plugged on. Test for correct operation. DR128 S ERVICE ANUAL...

  • Page 72: Removing The Front Panel Circuit Board Assembly (Inc Lcd Display)

    To refit the front panel circuit assemblies, follow the above procedure in reverse order. Make sure all LEDs and harnesses are correctly aligned and inserted correctly. Test for correct operation. DR128 S ERVICE ANUAL...

  • Page 73: Removing The Power Supply Circuit Board Assembly

    To refit the power supply circuit assembly follow the above procedure in reverse order. Make sure all harnesses are correctly aligned and plugged on. Test for correct operation. DR128 S ERVICE ANUAL...

  • Page 74: Ordering A Dr128 Unit, Options & Spare Assemblies

    DR128 WinDR Disk (2 of 2) 002-273 SERVICE TOOLS The tools required to service the DR128 range of products are standard to an electronics service workshop and are easily obtainable. The following items are necessary for disassembly and service access: 1-point Crosshead screwdriver (M3, 4AB)

  • Page 75: Ordering Spare Parts

    It is recommended that the spares kit order code 002-204 is held and maintained by the service agent to enable in-field service repairs to the DR128 independent of the ALLEN & HEATH factory. Commonly available items such as resistors, capacitors, tools and soldering equipment are not included. The contents of the kit is listed below.
  • Page 76 AE2826 Inductor 68uH 3A S/SWITCH AE2827 Insulating kit TO220 AA0693 Miscellaneous: DR128 Packing assembly 002-203 DR128 Rack mounting brackets (per pair) AA2717-LR DR128 Acrylic Fascia AA2735 Jumper socket AL0334 Front panel LCD display AE2734 Battery 3V 180mAh PCBV (DR1 CPU PCB)

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