Download DR128+Service+Manual..
Transcript
ALLEN&HEATH WARNING – HIGH VOLTAGES Power Supply Unit (PSU) work should only be carried out by qualified personnel. We recommend that you use an approved Allen & Heath service centre for all power supply work. Please contact your local Allen & Heath distributor for more details. http://www.allen-heath.com/ DR 128 12 IN 8 OUT 24-BIT DIGITAL MIX PROCESSOR SERVICE MANUAL PUBLICATION AP2974 HOW TO USE THIS MANUAL This service manual is published in two sections: Section A: contains the INSTALLATION / USER GUIDE which includes details of INSTALLATION, CALIBRATION and OPERATION for the DR 128. Section B: contains the SERVICE INFORMATION which includes details of SERVICE PROCEDURES, SPARE PARTS & ASSEMBLIES and CIRCUIT BOARD DIAGRAMS for the DR 128. copyright © 1997 ALLEN & HEATH. All rights reserved DR128 SERVICE MANUAL Publication ..................... AP2974 Issue 1 SECTION A A DR 128 INSTALLATION / USER GUIDE CAUTION Refer all installation, calibration and service work to qualified service personnel DR128 SERVICE MANUAL Limited One Year Warranty ! " # $ ! ! % & Conditions of Warranty " # " % ' ' # (! ) ' ! % ' ! ' *' ! $ ! " + ,-./0 # 1/234 $ 4 + 5 .223 ! !"#$# "## % & '##"#$!# () *,-*4 *%%+,-*. /0 12"%3 4##5 Contents i Full Contents Section 1 - Introduction ! " # $ " % & ' ( Section 2 - DR128 Overview ) # ) ) * + #, # +, " + & Section 3 - Using the DR128 #% ./0 #1 2 #13 ) #1, ) + +4! +4!'54 +4! DR128 USER GUIDE ii Contents Section 4 - Hardware Configuration , & 6, ( 6,7 ( 4! , 2 ,7 2 *8 87 Section 5 - Setup Menu ' '! 9 " '5 " & /+ ( / ( /94 /94 "/948 2 &/,4 ) (/%0 -/ 2/8 )/, /8, / 5, " /#1 & /+41 "/%0 2 &/0 ") (/,% ") -/9!! ") 2/ " Section 6 - Appendix .: " "" %+ "& +! &) DR128 USER GUIDE Introduction 1 Introduction 1 ! "# ! $ % & ' DR128 USER GUIDE 2 Introduction Introduction $()* + ,- ... / /..0/.- 1. .. 2 $()* /..1+ ,$( , $()* &32 42 .2 . ( $( "$( +0 " . 1 . 211 1 . 1 1 . 1 .5 . Service & Technical Support 6.$()*/. 1 5.1 To avoid damage to internal components by mishandling and/or misconnection, only technically competent personnel should attempt service & installation work on this unit. 1 5 . 5 .12 /.. 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. DR128 USER GUIDE Introduction 3 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. The mains voltage setting is indicated on the rear panel mains socket. Check that this matches your local mains supply voltage. Check your mains wiring and earthing before switching on. DO NOT REMOVE THE MAINS EARTH CONNECTION To ensure your safety the mains earth is connected to the chassis through the power lead. Do not remove this connection. Precautions 5 + . 1 6 1 $ + $ $()*- $ . $()* $ 5 +.21 1 17 . . 1 5 2 1 2 .52 0 .0221 DR128 USER GUIDE 4 Introduction Installation $()*6)85. +$()*- 5 1 .2 . 1 2 . 7 (57. $()* % 1 .0.. 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 USER GUIDE Introduction 5 Connecting Mains Power ( 6 4 5 .. 5 . ..&1 ( . 1 & & . 51 Changing the Fuse or Mains Voltage Setting .1 . . 9.. 7 6 . : Ac mains Fuse 100V AC T1.6A 120V AC T1.6A 220V AC T630mA 230V AC T630mA . . . . (..+51 .7 . DR128 USER GUIDE 6 Introduction Connecting DC Supplies +#$15.1. . . . 1 $115;. !"# $%" $ 1 9..!+.7 (.- $2 6< Remove all power to the DR128 when replacing the fuse &' DR128 USER GUIDE Introduction 7 Earthing . => . . : ) 7 . 5 +.. 7 .. 1.1??2. "./.. 0.. @ 5 ..5 . . . 121/. .1.0 . .2 .. 1??2 . 1. . . + 1 ./1.1?? 17 .. : !"# $()*. 1 +9# 1. A - /. 2.12 $% " $ .. 12 1 & " %99 . 1 $()* ...1. &$ "$..1 .151 11BC5=DC(> 9# =DC( )> 1 C 159#$()* &"' $ 5 1@ DR128 USER GUIDE 8 Introduction DR128 USER GUIDE DR128 Overview 9 DR128 Overview 2 !" #!$ $ %&"' ($ )*& ! ( ( +,- ( #+# ( ' ( % ( ( ( ) ( .- ( DR128 USER GUIDE 10 DR128 Overview Introduction /0 ". 1 . " 2 3 4 /0 54 3 0 6 4 3 31 7 8 29:0;"1 4 ;5 <%= ! 4014 4 0 ". - 41 0 ". 4 + 50 0 ;" /0 ". 5 4040 3 + Main Features .>'50?%@05 8 ?+!20 .> .+4 +#4!A;"B 3.!3500 (40 4$ . +"*4 2+* 04 56* +050;" 54 +/!*44' "*8<*+ @"! Signal Processors 40;"0! 4045C D0&E #1%) ,D &E (1 ! DR128 USER GUIDE DR128 Overview 11 Basic Principles /0".40 4 000+62" /0 0 00 4 " & 4 *00+6"2 0 " & 0 0 ". 5 /0"."&A&F4 0B /04&035045 43 /03C .-4 .- .350 0 . "* .-4+4 2 0 4 4 0 4 0 ".F 01 ;"! /0 & 4 +4 0D0&E1D! 4 29:0;"45! DR128 USER GUIDE 12 DR128 Overview 0 4"3+ &3 &0"3& /0 ( & 4 50 % 4 0 4 + 4 0 "3 &3 " " - 4 /0 (A(B40 0 Resource Palettes /0 4 &0 44 40D0 &E11 &0&A&B0". 2 ".4 0 &1 0 4 & 5 43 0 3 A B1 4 0 4 "3 &34 0 0 # & 4 # 44 /0 5 DR128 Configuration Resource Palettes Basic DR128 1 Basic DR128 + one DSPx Expander card 3 Basic DR128 + two DSPx Expander cards 5 240:4;" 45 " * 00 ;"0 DR128 USER GUIDE DR128 Overview 13 DR128 USER GUIDE 14 DR128 Overview Front Panel /0 ".F 0 3 40143 440 0 0 6 61 $ /0*1G500#+&" 4 0 50 H 0 0 ( 0 1 Removable Front Panel /04 504 40$ /0 04504 /0 003+*544 2 LCD 2 3( 0 !" 5 0 3 4 184 3 Control Keys /0 * ' /0 G 50 0 $ 0 0 4 Function Keys $504 &0 * 10014 5 Status LEDs/Signal Meters &0$0#+&" 40$ @ 0 &" '* AD'B 4 00&"A2 B 6 Setup Keys 00$ /0503 G50! 20 5 /0 &! &/ * G 50 0 *0 7 Rack Ears /0* 4* DR128 USER GUIDE DR128 Overview 15 DR128 USER GUIDE 16 DR128 Overview Rear Panel 1 Battery Input I4@"! /05 4".0454 2 Sys-Net Option /0443 3 RS-232 <+ "+/ 4 ! ;" 45 2 <+5 <+5 %+5 4 J++F 64! ; 0 0#4 ",+ 4 Mic/Line Inputs .'4> ( 4 G 0 5 A?%@B* 5 Mains Input &!*405 6 Remote Input <+; "+/ . + 50 /0 50 4454 400 $ 7 Line Inputs !20 " A2?B 4 4 - 4+@? G 8 Line Outputs .-> - 4+@?G DR128 USER GUIDE Using the DR128 17 Using the DR128 3 Contents ! " # $ #%"&$ #%"&'(% $ )*#%"& $ DR128 USER GUIDE 18 Using the DR128 Front Panel Display )*#!& + &*%* DR128 Ver 1.00 Please Wait , +%& %- , & + - & # **- + %) % !& + &* 01 Patch 01 Wednesday 11:59 , +!& %-.%, %-& - -+#&++, -% & ,% Auto-Peak / + #0 & - 1+& &*%*-% +!+ 02 Patch 02 Mic 1 : PEAK! ,%*& % - &2/ 3+ &-%%1%*& +4 3+% *+& * 3 ! 5 ! 1 & %- *%- . & " 61 & * 1+(% &** Patches , 7 *%%- %% - # + # % *8 1 %1 3+ DR128 USER GUIDE Using the DR128 19 "# - +* * )# *% & - ,%%9& + &**8 35! 35! * !6( %* * "#*%* "%#* +%& - & + &**8 3:5! .% .% *% #%*% ! )* " ' !!* &"* * " % " 61 - * )#- -++ &*8 # "6 *# ;" #%+*# # +%)# ,++ + 8 3:5! <%%%= !6( <%(%%= %>01>01 Function Keys , &- #0+'-*+ &*8 , ,-* +3 5! , &+ * 8 * DR128 USER GUIDE 20 Using the DR128 , - * 3,%%-& %%+ *-?+% , - + 7 %% ,- * ,+**"6"*27+ &++** - & Function Key Unused ,)+! + &*8 PATCH: Patch 02 Unused , & %& ,0' & &%5 Function Key as a Level Control -*%% +* 35 , % & +* 3% % 3+* 3%1* + &*8 Mic 1 Lev 65 , + ! % + & -* * *, -& ,- - & / ' + & -43+ & & DR128 USER GUIDE Using the DR128 21 dB dB 100 95 90 85 80 75 70 65 60 55 50 0 -1 -2 -3 -4 -5 -6 -7 -9 -11 -13 45 40 35 30 25 20 15 10 5 0 -15 -18 -21 -25 -30 -35 -40 -50 -60 OFF ,-% +! &-*+ , -* "% 1 + * %1 * + &*8 Mic 1 Lev 55 @ -* 3+-* !* * '+ & -43+ & & Mic 1 Lev 45 . *&& ?* % , ! & % + - 4 + A% -*'"! 3 " 6 * ! - * ,% %&+%%%%(%% - - * + %%%%(%%% % &*+ * )?* *1++%(%%%%% - & - - & * -+ DR128 USER GUIDE 22 Using the DR128 Mic 1 Lev 35 @ %%% - $4 </= Mic 1 Lev 75 @%(%% -C4 <4/= )* '- & * % B * # * * * Green on at -36 dBFS Red on at -6 dBFS ! */"&%(%% * " Patch Select -*%% & + 7 %%*& + &*8 *7 Select 01 Patch 01 ,-% +!&%-.% 3+ %- 1 5. & - Select 02 Patch 02 ON Select 02 Patch 02 ON ) 1"', SET , " %'"!3+*" & % +-4 )*# 0'& 3+'& %- DR128 USER GUIDE Using the DR128 23 Patch Recall -*%% +7 %%(% +&+* 1* & + &*8 & -8 Loading 01 Patch 01 Loaded ! 01 Patch 01 +&!& % Remote Switches & +% , #0 # + * % %% & #% & - +* % + +% + &*8 35! 3% 35! % # Remote Switch Examples *%%&% + & +-*%%*& 3 + % 1 "& 3 - +* # 0 % "% , & "& - +* ++ -* % %* %* D #+*2+ +**#%"& Wiring Remote Switches ,+&- &< & =8 Pin 1 - Switch 1 Input Pin 2 - Switch 2 Input Pin 3 - Switch 3 Input Pin 5 Pin 4 - Switch 4 Input Pin 1 Pin 5 - Switch 5 Input Pin 9 Pin 6 - Switch 6 Input Pin 6 Pin 7 - Switch 7 Input Pin 8 - Switch 8 Input Pin 9 - Common DR128 USER GUIDE 24 Using the DR128 . +, -- )&&& "&3 < =!%% <=%+ - - & , (% - & & & & - # + 3 5 ! (% #% "& & - +* 5 3 5 ! 1 #% "&5 5! Level Up Pin 1 - Switch Input 1 Pin 2 - Switch Input 2 Down Pin 9 - Common , 1 %%&-&- & (% 1 % - % *& & Level Up Level Down Pin 1 - Switch Input 1 Pin 2 - Switch Input 2 Pin 3 - Switch Input 3 Pin 4 - Switch Input 4 Pin 9 - Common "&3+* "&3+* "&3$+* "&32+* 33! 33! 3! 3! #%& - 1+(% 1% + +%% Level Pin 1 - Switch Input 1 Pin 2 - Switch Input 2 Pin 9 - Common DR128 USER GUIDE Level Up Up Down Down Hardware Configuration 25 Hardware Configuration 4 !"#$ "#$ DR128 USER GUIDE 26 Hardware Configuration %&&&' Setting Adjustment Made Factory Setting Notes Mic Input Gain On rear panel Gain minimum Fully anti-clockwise Mic/Line Pad Links on Mic In PCB Pad not enabled Links fitted Mic Phantom Power Links on Mic In PCB Phantom Power On Links fitted Line In Sensitivity Internal trimmer on Line Out PCB -10dBV sensitivity Trimmer fully clockwise Output Sensitivity Internal trimmer on Line Out PCB +4dBu sensitivity Trimmer fully anticlockwise &()$*+ , ,* Signal Levels -& -(). &&/"0*1&&.* ," /&2( Green on at -36 dBFS Red on at -6 dBFS %3!45 ( 60/.&*7! , DR128 USER GUIDE Hardware Configuration 27 Mic/Line Inputs Pin 2 = + + 2 31 1 3-Pin XLR Male Plug 5 .&!8$9:! ,/51,;) Phantom Power +15V PP 2 + 1 - 3 24-Bit ADC 22dB Pad Mic Gain Trim 6 7! & <7! ! =6, ,*&. ,>,/*,*. / <=<;)#$= Setting Mic/Line Input Gain 2&;) &6?& & ,* ..6&* 6 ,&&& !<. = Anti-Clockwise Mid Clockwise Mic Gain (dB) 18 35 60 Line Gain (dB) -4 13 38 DR128 USER GUIDE 28 Hardware Configuration Selecting Mic Pad 6&()$&*&6 . & ) .!& ) . 6 %!6&,' 1 2 3 4 5 6 7 8 Pad Disabled Precaution Make sure that the Phantom Power is disconnected when using the Mic/Line inputs with Line level sources. Phantom Power 6 ()$@ &* & "A68$9: &B#&;). &&& * 2 , A / * * , 2.,,6, ? . ) .6%!6& ,' DR128 USER GUIDE Pad Enabled Hardware Configuration 29 1 2 3 4 5 6 8 7 Phantom Power ON Phantom Power OFF Line Inputs 4, )%0* A + B A-B Mono Sum 24-Bit ADC Mic Gain Trim %( *1 6 ) 1 , 2 & 7 1 0B!1,4 , 6 / ,,6,/ Setting Line Input Gain 2 & 7 $! 6 * , ? , /$3!:& 87!6()$ &*&&/$3!:,& & %( *1 6 1 ) C 1 + , ,* 87! 6,, , ,* , DR128 USER GUIDE 30 Hardware Configuration 1 2 3 4 6 *&* %!1& */.(5 & Caution Do not attempt to force the gain trimmers as they can easily be damaged. 6 * &* /$3!: < 5* /!1 5 = 6 * ,&&& Sensitivity (dBu) Gain (dB) DR128 USER GUIDE Anti-Clockwise Mid Clockwise +4 -4 -8 0 +8 +12 Hardware Configuration 31 Balanced Outputs 6 , #/ ;) 6 , + 2 - 3 1 20-Bit DAC Line Out Gain Trim Setting Output Gain 2&,$! 6 * , ? , /$3!: B& 87! 6()$ &*&&87! *,& &,&15 C 1 + + 1 5 1 , ,* /$3!: 6,, , ,* , 1 2 3 4 5 6 7 8 DR128 USER GUIDE 32 Hardware Configuration 6 *&* %! & *.(5 & Caution Do not attempt to force the gain trimmers as they can easily be damaged. 6 *&*87!6 * , &&& Sensitivity (dBu) Gain (dB) DR128 USER GUIDE Anti-Clockwise Mid Clockwise +4 -4 -8 0 +8 +12 Setup Menu 33 Setup Menu 5 !"" # $ # % & %'" & %('" ) *% + # ,- & ) ( + *" (*" $ '*" ./ !%/ & ,01- + '"- + # *',' + & ) DR128 USER GUIDE 34 Setup Menu Introduction 2 . " "" %% " 003" ,!$&430 5 30% 0 20""06 !"" %7(" *% ,- (*" ' .8!%/ ,82%'"- *',' 5 0 , ! "7 " 3 1,!'! $$3" Entering Setup Mode SETUP 27"/0$ 0 0 3" : %% Entering the Security Password *** Setup *** PASSWORD:“????” SET 9-"072% 70"""7 2 0*',"""0""%" % *** Setup *** Password Wrong! 00%""3" *** Setup *** *1 Recall Patch DR128 USER GUIDE Setup Menu 35 Navigating the Menus 9-0*', % ESC 92-0 % 9'3-- %2 SET 1-%" 2;'-0%" !00 Exiting Setup Mode 2'- 0%3 ""3%% Exit Setup SAVE CHANGES: Y SET "<(-2 0 "<""3%0%3 Save setup, exit PATCH: 1 ON SET 9 - " 2 " %3 "" 3 (3 2 Save setup, exit SAVING PATCH 1 0"(%""% """",!$&00 2""3 " DR128 USER GUIDE 36 Setup Menu Menu Map Main Menu Items Menu Settings 19 Set Security [Password] [On/ Off] 18 New Password [Current Password ] [New Password] 17 LCD Contrast Contrast [0..10] 16 Clock Time [HH:MM:SS] 15 Day of Week [Day] 14 Remote Keys Key Number [1..8] 13 Soft Keys Key Number [1..12] Function - Unused - Level Control - Patch Change Param 1 Param 2 Param 3 Channel Patch No. Min Trim Max Trim Function - Unused - Level Change - Patch Change - Patch Select Param 1 Param 2 Param 3 Channel Patch No. Min Trim Max Trim Level [0..100] 12 Matrix I/P Channel [1..12] O/P Channel [1..8] 11 O/P Level O/P Channel [1..8] Level [0..100] 10 I/P Level I/P Channel [1..12] Level [0..100] 9 O/P Phase O/P Channel [1..8] Phase [NORM/REV] 8 I/P Phase I/P Channel [1..12] Phase [NORM/REV] 7 Ducker I/P Channel [1..12] 6 Limiter O/P Channel [1..8] 5 Name Output [Output Name] 4 Name Input [Input Name] 3 Name Patch [Patch Name] 2 Save Patch [Patch Number] 1 Recall Patch [Patch Number] DR128 USER GUIDE [OFF/ACTIVE] Priority [1..3] Threshold [-1dB..-30dBFS] Threshold [0dB..-60dB] Response [Slow, Med, Fast] Depth [1dB..60dB] Release [1db/s.. 100dB/s] O/P 1..8 [On/Off] Setup Menu 37 1 - Recall Patch 2%%""0 *** Setup *** *1 Recall Patch 2 " SET "%37 0% *1 Recall Patch PATCH: 1 *1 Recall Patch PATCH: 2 ON SET (""30 " 2"" *1 Recall Patch LOADING PATCH 2 *1 Recall Patch PATCH 2 LOADED! *** Setup *** *1 Recall Patch 2 - Save Patch 2 % % ,!$& 0 *** Setup *** *2 Save Patch 2 " SET "%37 0% *2 Save Patch PATCH: 1 *2 Save Patch PATCH: 2 ON SET (""30 " 2 2""-0 DR128 USER GUIDE 38 Setup Menu *2 Save Patch S A V I N G PATCH 2 *2 Save Patch PATCH 2 SAVED! *** Setup *** *2 Save Patch 3 - Name Patch 2%%0%& " 2 % %3 " " 0 *', %" 20"%=+47=+$4 *** Setup *** *3 Name Patch 2 " SET *3 Name Patch PATCH: 1 "%37 0% *3 Name Patch PATCH: 2 ON (""30 2 % * 3 Name Patch 2 NAME: “Patch 02” SET SET 9-""72% <'% 1"" 2 4 - Name Input Channel 2 % % 0 $ '" % & " 00-3"'" ""7 '" % " " 0 *', > "" 2 % " " " 1,! 2 0""%=47=$47=*)4 DR128 USER GUIDE Setup Menu 39 *** Setup *** *4 Name Input 2 " '" SET *4 Name Input I/P CHANNEL: 1 SET * 4 Name Input 1 NAME: “Mic 1 ” SET " '"%37 0%$ 2 % 9-""72% <'% 1"" 2 5 - Name Output Channel 2 % % 0 & ( '" % & " 0 0 - 3 " ( '" ""7 ( '" % " " 0 *', >"" 2%"""1,! 2 0""%=(;47=(;$4 *** Setup *** *5 Name Output 2 " ('" SET *5 Name Output O/P CHANNEL: 1 SET *5 Name Output 1 NAME: “O/P 1 ” SET "( '"%37 0%& 2 % 9-""72% <'% 1"" 2 DR128 USER GUIDE 40 Setup Menu 6 - Limiter Setup *% 7 0 ( '" 2" ! " " "0%0"% Threshold 2"%%"""% 2""?. 2"3"0%6 0dB -1dB -2dB -3dB -5dB -7dB -10dB -12dB -15dB -20dB -25dB -30dB -35dB 12"+?*%3"8""00 Response 2*%!%%0*%"" ""3*%2"0"%""" ""0""3"" Attack Release 100uS 300uS 1mS 3mS 1mS 3mS 10mS 300uS *** Setup *** *6 Limiter *6 Limiter O/P CHANNEL: 1 *6 Limiter O/P 1 ACTIVE: O F F *6 Limiter O/P 1 THRESHOLD: 0dB DR128 USER GUIDE 10mS 30mS 30mS 100mS 100mS 300mS 300mS 1S 1S 3S 2" ('" SET SET SET SET 9- " ('" 22 9- "*% (;(.. 2 2 9- "2" "" 2 2 Setup Menu 41 *6 Limiter O/P 1 ATTACK: 100uS *6 Limiter O/P 1 RELEASE: 300uS SET SET 9- "52% 2 2 9- "!" 2% 2 2 7 - Ducker Setup 5 "" ,- 0 " 2 ,- "" '" "" " ( '" " 2 "" " 072"7,!";@" Ducker Priority ."'"""3- ,- 30 $ %%% %%% 5-"7 Ducker Threshold 2,-2"%"": 22""?. 2"3" 0%+? +?? Ducker Depth 2,-,%%%0"" ,-"" A" ? .%"7,0 ?""""003 ? ,- 2 , 3 " 0% +? +? 0? Ducker Release 2 ,- !" % % - " "" %" "" 0 "" 3" 2" A" ? 0% ? B""C++?B0"C0? DR128 USER GUIDE 42 Setup Menu Ducker Output . 7 " " 3 00 3 ,- *** Setup *** *7 Ducker 2" '" SET *7 Ducker I/P CHANNEL: 1 SET 9- " '" ,- 2 2 9-3" 3",- *7 Ducker I/P 1 DUCKER: OFF ",-5'2A0% ,-(.. 05;?-83" 0,-(..0%% 3" *7 Ducker I/P 1 DUCKER: ACTIVE *7 Ducker I/P 1 PRIORITY: 1 Max *7 Ducker I/P 1 THRESHOLD: 0dB *7 Ducker I/P 1 DEPTH: -1dB *7 Ducker I/P 1 RELEASE: 1dB/s DR128 USER GUIDE 2,- 8,-% SET SET SET 9- " 2 9- ",- 2" 2 9- ",- ,2 SET SET 9- ",- !" 2 Setup Menu 43 *7 Ducker I/P 1 DUCK O/P 1: YES SET *7 Ducker I/P 1 DUCK O/P 8: NO SET 9- ,-((.. ('" 2"( '"$& 8 - Input Phase 2 % % " 0 '" 2 0"0%"B C *** Setup *** *8 I/P Phase 2" '" SET *8 I/P Phase I/P CHANNEL: 1 SET *8 I/P 1 Phase PHASE: NORMAL SET 9- " '" 2 9-"(!5*B C!A!BC 2%% 9 - Output Phase 2%%"0('" 2 0"0%"B C *** Setup *** *9 O/P Phase *9 O/P Phase O/P CHANNEL: 1 2" ('" SET SET 9- "( '" 2 DR128 USER GUIDE 44 Setup Menu *9 O/P 1 Phase PHASE: NORMAL SET 9-"(!5*B C!A!BC 2%% 10 - Input Level 9%%"'"*" 2:"% 0 1 1,! 2 "" 3 0%+++0 23"3""""? dB dB 100 95 90 85 80 75 70 65 60 55 50 0 -1 -2 -3 -4 -5 -6 -7 -9 -11 -13 45 40 35 30 25 20 15 10 5 0 -15 -18 -21 -25 -30 -35 -40 -50 -60 OFF *** Setup *** *10 I/P Level *10 I/P Level I/P CHANNEL: 1 *10 I/P 1 Level LEVEL: 100 DR128 USER GUIDE 2" '" SET SET SET 9- " '" 2 9- ""0% +++ 2 2 Setup Menu 45 11 - Output Level 9%%"('"*" 2:"% 0(11,! 2""3 0%+++0 23"3""""? dB dB 100 95 90 85 80 75 70 65 60 55 50 0 -1 -2 -3 -4 -5 -6 -7 -9 -11 -13 45 40 35 30 25 20 15 10 5 0 -15 -18 -21 -25 -30 -35 -40 -50 -60 OFF 2" ('" *** Setup *** *11 O/P Level SET *11 O/P Level O/P CHANNEL: 1 9- "( '" 2 SET *11 O/P 1 Level LEVEL: 100 9- ""0% +++ 2 2 SET 12 - Crosspoint Matrix Levels 2""0$&' 3> %% 2""30%+++0 23"3" """? dB dB 100 95 90 85 80 75 70 65 60 55 50 0 -1 -2 -3 -4 -5 -6 -7 -9 -11 -13 45 40 35 30 25 20 15 10 5 0 -15 -18 -21 -25 -30 -35 -40 -50 -60 OFF DR128 USER GUIDE 46 Setup Menu 2" '" *** Setup *** *12 Matrix SET *12 Matrix I/P CHANNEL: 1 SET *12 Matrix IP 1 O/P CHANNEL: 1 SET *12 I/P 1 O/P 1 LEVEL: 100 SET 9- " '" 2 9- "( '" 2 9- ""0% +++ 2 2 13 - Function Key Setup 0 $ . " . / 3 %% 0 0""0 9 *" (*" " !"" *"9 *", (*"9 (*", ,00%%70" *** Setup *** *13 Soft Keys *13 Soft Keys KEY NUMBER: 1 2" ./%3 SET SET 9- ". /2 2%%"./4>3 23:% %""0" *13 Key 1 Func. Fn: UNUSED DR128 USER GUIDE SET 9- ". /2 Setup Menu 47 Function Key - Unused 0./99,7/%"%"" "=943%"0*', Function Key - Level Control 20""%%./;*"7; *"97;*",7(;*"7(;*"9(;*", 0./;*"(;*"7%" """"3./-" "" 0./;*"97;*",7(;*"97 (;*",7%"%"./"" """ ""7./"""2%*%3 2%%%8%%%""3>. / ,0""02%"%+B%%%C++B%%%C 2%"3"0;*"" *13 Key 1 Func. Fn: I/P Level *13 Level Key 1 I/P Channel: 1 *13 Level Key 1 MIN LEVEL: 0 *13 Level Key 1 MAX LEVEL: 100 SET SET SET SET 9- ";*" 0 2 9- ";'" *"" 2 9- "%% 2%*%0%+ ++2 9- "%% 2%*%0%+ ++2 Function Key - Patch Select 0./"%" ""03./- "%372"" DR128 USER GUIDE 48 Setup Menu Function Key - Patch Recall 0./!""7%"%" ./""""%3" *13 Key 1 Func. PATCH: 1 SET 9- " %3"" 2 14 - Remote Key Setup 2,!$&4!") , 20% " 2 3 0 %"0."./ 0&!%/ 3%%00""0 9 !"" *"9 *", (*"9 (*", ,00%%70" *** Setup *** *14 Remote Keys *14 Remote Keys KEY NUMBER: 1 2" !%/%3 SET SET 9- "!% /2 2%%"!%/4>3 23:% %""0" Remote Key - Unused *14 Key 1 Func. Fn: UNUSED DR128 USER GUIDE SET 9- "!% /2 Setup Menu 49 Remote Key - Level Control 20""%%!%/;*"97 ;*",7(;*"97(;*", 0!%/;*"97;*",7(;*"97 (;*",7%"!%/""% %""" ""7!%/"""72%*%3 2 %%% %%% "" 3 > !% / ,0""02%"%+B%%%C++B%%%C 2%"3"0;*"9" *14 Key 1 Func. Fn: I/P LEVEL *14 Key 1 Func. I/P Channel: 1 *14 Level Key 1 MAX LEVEL: 100 SET SET SET 9- "!% /40 2 9- ";'" *"" 2 9- "%% 2%*%0%+ ++2 0;"",73%"0%%2% "% *14 Level Key 1 MIN LEVEL: 0 SET 9- "%% 2%*%0%+ ++2 Remote Key - Patch Recall 0 !% / !""7 %" %" !%/""""%3" *14 Key 1 Func. PATCH: 1 SET 9- " %3"" 2 DR128 USER GUIDE 50 Setup Menu 15 - Day of the Week 9 % % , 0 1- 0 " "- %" 8%"3%"0*', 2% 0-"0%%% *** Setup *** *15 Day of Week 2, 01SET *15 Day of Week DAY: SATURDAY SET 9- ", 2 16 - Clock 9%%%0"'"- %" 8%"3%"0*', 2%0 -"0%%% *** Setup *** *16 Clock 2 '"-2% SET *16 Clock TIME: 18:43:31 SET 9-"@22% 7%7" 17 - LCD Contrast 9 % > *', 0 00 %3 " " A"3+B"C+B-C 20"" *** Setup *** *17 LCD Contrast *17 LCD Contrast CONTRAST: 3 DR128 USER GUIDE 2*', ' SET SET 9- > 2 Setup Menu 51 18 - New Password 9 % % % 2 0 0 ( B % % ) C 2 0" =DDDD4 (.. *** Setup *** *18 New Password 2 SET 00(..""3 % *18 Enter P’word CURRENT: “ ????” SET 9-"0 " "" 92%'% <""3% *18 Enter P’word NEW: “ ????” SET 19 - Security 2%%0((.. "%E %% 0430=DDDD4 03"" *** Setup *** *19 Set Security *19 Set Security PASSWORD:“????” 2 SET SET DR128 USER GUIDE 52 Setup Menu 9-"0 92% *19 Set Security SECURITY: ON SET 9-0%((.. Forgotten Password? DR128 USER GUIDE Appendix 53 Appendix 6 DR128 USER GUIDE 54 Appendix Architect’s Specification The unit shall be a digital mix processor with 12 analogue inputs and 8 analogue outputs. The unit shall have a full crosspoint matrix, comprising 96 points, allowing any input, or combination of inputs, to be routed to any output or combination of outputs. All crosspoints shall have a variable level. The 8 mic/line inputs and 8 line level outputs shall be on balanced XLRs with level trims. The 4 stereo line inputs shall sum to mono and be on RCA phono connectors with level trims. Comprehensive ducking capability shall be provided. The mic/line inputs shall have internal jumpers for pad and phantom power selection. The mic/line gain range shall be 18dB to 60dB with input impedance of 2k (no pad) or 10k (pad). The phono input gain sensitivity shall be internally adjustable from -10dBv to +4dBu with an impedance of 10k. The inputs shall be converted using a 24 bit analogue-to-digital converter. The XLR outputs shall have a variable senitivity from -10dBV to +4dBu with an output impedance of 50. The conversion shall be by a 20 bit digital-to-analogue converter. The unit shall be configured over a standard RS232 port using a proprietary 32-bit Windows™ based software application with a Graphical User Interface. Configurations shall be editable both on and off-line. The configuration shall determine the allocation of internal signal processing resources to input and output channels, as well as routing, passwords, levels and channel names. After configuration, the unit shall run standalone, without an external computer. Signal processing resources available shall include compressors, gates, limiters, graphic equalisers, parametric equalisers and crossovers. Optional expander cards shall provide the facility for additional signal processing resources and/or supplementary delay resources. The unit shall use Flash memory to permit firmware upgrades via the RS232 port. An internal real-time clock shall allow scheduling of timed events. The unit shall be compatible with BS5839 installation requirements. The hybrid switched/linear power supply shall allow emergency operation with a single 24V external battery and the unit shall interface with alarm systems. The total power consumption shall be no more than 70VA and the permissible incoming mains voltage range shall be configurable to 100, 120, 220 or 230 VAC. The front panel shall feature 12 installer-definable function keys for user control of volume levels and patches. A removable fascia shall enable custom labeling. There shall also be a backlit LCD for indication of setup menus, peak conditions, patch status and channel levels. Important system parameters, such as Patch Naming, Channel Naming, Limiter control, Ducking control, Phase reversal, Routing assignments, Date/Time, LCD contrast and Soft Key definitions shall be password-protected from user adjustment. Facilities for remote switching of unit parameters shall be provided. 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 USER GUIDE Appendix 55 Technical Specifications Headroom +16dBu (+4dBu nominal operating level) Max Output +16dBu Frequency Response 20Hz - 20kHz +/-1dB (+4dBu into 600 ohms) THD 0.005% @ 1kHz typical Dynamic Range 99 dB typical (Mic Input to Line Output) Hum & Noise <-80dB measured rms 22Hz to 22kHz bandwidth Mic EIN -127dB (150 Ohm source) Crosstalk @1kHz >80dB Adjacent Input Channels Sampling Frequency 48kHz A/D Converter 24-bit Sigma-Delta 128-times oversampling D/A Converter 20-bit Sigma-Delta 128-times oversampling Processing 24-bit linear Mic Input Gain Control external 42dB (60dB to 18dB) variable Mic/Line Pad 22dB internal link Line Input Gain Control internal 12dB (-8dBu to +4dBu) variable Line Output Gain Control internal 12dB (-8dBu to +4dBu) variable LCD Display 2 x 16 Character, backlit LED indicators Tri-colour Programmable Signal levels Green Red On at –36dBFS On at –6dBFS Function Keys 12 Programmable as Unused, Level controls or Patch changes Front Panel Meters 12 Programmable as Signal Meters or Status Indicators RS232 9 way female D-Type, unbalanced 57.6 kBaud Remote Switch Inputs 9 way female D-Type, 8 opto-isolated, programmable Patch Memories 16 internal Battery Operation +24V DC +/-15% @ 3.5 Amps maximum Mains Settings 100 VAC 120 VAC 220 VAC 230 VAC Power Consumption 70 VA maximum Weight Packed Dimensions 482 x 380 x 89mm (rack mounting brackets fitted) Options DSPx DSP Expander DSPd Delay Expander Fuse: T1.6A Fuse: T1.6A Fuse: T630mA Fuse: T630mA 10 kg Unpacked 9.5 kg DR128 USER GUIDE 56 Appendix Connecting WinDR !"# $ $ % & '$ ( ) * + System requirements: Hardware $ ), $) )' # -. / ' 0!" )' 1# $$2 !(3 ( !(3 & / ( / 456 ' 7 / "4" $$ Software ( 89 Installing WinDR onto a PC. ) $ + :$ 456 ' 7 $ % & ) IMPORTANT DO NOT INSTALL THIS SOFTWARE OVER A PREVIOUS VERSION. ' '$ ( ; ' / / ) / / ) < )' Control Panel Add/Remove Programs $ Start/Settings $ Installing WinDR from 3½” discs. % & '$ ( $) ( 8 = 4 7 , )+ ! = 7 $) ! 456 ' 7 / " :$ Start $ Run ' 4 $ ', Next DR128 USER GUIDE Appendix 57 : ' $ 7 * ) ', ) ', 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. DR128 USER GUIDE 58 Appendix Installing WinDR from the internet. % & '$ ( $) ( 89 = ) $ % & ) , )+ 4 > = % & ) + " !"# DR128 USER GUIDE Appendix 59 4 7 / !"# 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. Connecting the to a remote PC. !"# ' / !"# )' "4" !"# "4" $ DR128 RS232 Signal 9way D type Pin 2 Tx Pin 3 Rx Pin 5 0V Ground Pins 1, 4, 6, 7, 8, 9 = not connected Connector chassis connected to chassis earth DR128 USER GUIDE 60 Appendix Reseting the Password : ( ) / < $ = ' ) ) : $/ $ !"# $/ / > 7 ? ) 7 $7 @" ) Reset Password !"#, 7 , ) ABBBB ' C:: $/ 7 ) / = 7 , $ DR128 USER GUIDE Normal Operation 1 SECTION B B DR 128 SERVICE INFORMATION CAUTION Refer all installation, calibration and service work to qualified service personnel Warning to the Service Engineer Allen & Heath warns that any unauthorised changes or modifications to the DR 128 unit may invalidate the legal compliance of the unit and could void the user's authority to operate the equipment. DR128 SERVICE MANUAL 2 Section B CONTENTS INTRODUCTION, SERVICE AND TECHNICAL SUPPORT ..................................................... 3 REMOVING A CONNECTOR CIRCUIT BOARD ASSEMBLY (upper & lower) ........................ 4 REMOVING THE MICROPROCESSOR (CPU) CIRCUIT BOARD ASSEMBLY ...................... 5 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 ......................................................................... AG2605 PSU CIRCUIT DIAGRAM sheet 1 of 2 (transformer & battery changover) .............................. C2605 PSU CIRCUIT DIAGRAM sheet 2 of 2 (switching & linear regulators) ..................................... C2605 MIC INPUT CONNECTOR CIRCUIT BOARD COMPONENT IDENT ...................................... AG2602 MIC INPUT CONNECTOR CIRCUIT DIAGRAM sheet 2 of 8 (mic inputs 1 & 2) ..................... C2602 MIC INPUT CONNECTOR CIRCUIT DIAGRAM sheet 3 of 8 (ADCs 1 & 2) ............................ C2602 MIC INPUT CONNECTOR CIRCUIT DIAGRAM sheet 4 of 8 (mic inputs 3 & 4) ..................... C2602 MIC INPUT CONNECTOR CIRCUIT DIAGRAM sheet 5 of 8 (mic inputs 5 & 6) ..................... C2602 MIC INPUT CONNECTOR CIRCUIT DIAGRAM sheet 6 of 8 (mic inputs 7 & 8) ..................... C2602 MIC INPUT CONNECTOR CIRCUIT DIAGRAM sheet 7 of 8 (ADCs 3 & 4) ............................ C2602 MIC INPUT CONNECTOR CIRCUIT DIAGRAM sheet 8 of 8 (Connectors) ............................ C2602 LINE OUTPUT CONNECTOR CIRCUIT BOARD COMPONENT IDENT ................................. AG2603 LINE OUTPUT CONNECTOR CIRCUIT DIAGRAM sheet 2 of 8 (line inputs 1 & 2) ................. C2603 LINE OUTPUT CONNECTOR CIRCUIT DIAGRAM sheet 3 of 8 (line inputs 3 & 4) ................. C2603 LINE OUTPUT CONNECTOR CIRCUIT DIAGRAM sheet 4 of 8 (balanced outputs 3 & 4) ...... C2603 LINE OUTPUT CONNECTOR CIRCUIT DIAGRAM sheet 5 of 8 (balanced outputs 1 & 2) ...... C2603 LINE OUTPUT CONNECTOR CIRCUIT DIAGRAM sheet 6 of 8 (balanced outputs 7 & 8) ...... C2603 LINE OUTPUT CONNECTOR CIRCUIT DIAGRAM sheet 7 of 8 (balanced outputs 5 & 6) ...... C2603 LINE OUTPUT CONNECTOR CIRCUIT DIAGRAM sheet 8 of 8 (digital interface & conns) .... C2603 MICROPROCESSOR CPU CIRCUIT BOARD COMPONENT IDENT ..................................... AG2604 MICROPROCESSOR CPU CIRCUIT DIAGRAM sheet 2 of 6 (interface) ................................. C2604 MICROPROCESSOR CPU CIRCUIT DIAGRAM sheet 3 of 6 (CPU & memory) ...................... C2604 MICROPROCESSOR CPU CIRCUIT DIAGRAM sheet 4 of 6 (processing engine #1) ............. C2604 MICROPROCESSOR CPU CIRCUIT DIAGRAM sheet 5 of 6 (processing engine #2) ............. C2604 MICROPROCESSOR CPU CIRCUIT DIAGRAM sheet 6 of 6 (expander connectors) ............. C2604 FRONT PANEL CIRCUIT BOARD COMPONENT IDENT ....................................................... AG2423 FRONT PANEL CIRCUIT BOARD CIRCUIT DIAGRAM sheet 1 of 1 ....................................... C2423 DSP EXPANDER CIRCUIT BOARD COMPONENT IDENT ..................................................... AG2741 DSP EXPANDER CIRCUIT DIAGRAM sheet 2 of 3 (processing engine #1 & conns) .............. C2741 DSP EXPANDER CIRCUIT DIAGRAM sheet 3 of 3 (processing engine #2) ............................ C2741 Refer to SECTION A for information on installation, calibration and operation of the DR128. DR128 SERVICE MANUAL Section B 3 INTRODUCTION The information presented in this section of the manual is intended for competent technical personnel to carry out service and product support for the DR 128. We assume that the reader is familiar with the related electronic theory and audio terminology, and is able to carry out basic servicing, fault-finding and repair of digital audio equipment of this type. Service personnel should also be familiar with audio systems, mains earthing and power requirements, as well as handling precautions. For information on the installation, operation and application of the DR 128 please refer to section A of this manual. Whilst we believe the information in this manual to be reliable we do not assume responsibility for inaccuracies. We also reserve the right to make changes in the interest of further product development. SERVICE AND TECHNICAL SUPPORT Under normal operating conditions the DR 128 does not require user maintenance or internal calibration. Any service work required should be carried out by qualified technical personnel only. We are able to offer further product support through our worldwide distribution network. To help us provide an efficient service please quote the unit serial number, the date and place of purchase in any communication regarding this product SAFETY WARNING ! Mains electricity is dangerous and can kill. Mains voltage is present within the unit. Except for Installation and calibration, do not remove any covers with power connected. Do not carry out any work within the unit while it is powered. High voltage components are insulated for safety but should not be touched with power applied. The mains voltage setting is indicated on the AC mains input socket on the rear panel. Check that this matches your local mains supply. Check your mains wiring and earthing before switching on. DO NOT REMOVE THE MAINS EARTH CONNECTION! The chassis is always connected to mains earth. Audio 0V connects to the chassis internally. Should problems be encountered with ground loops operate the audio ground lift switches on other equipment connected to the unit or disconnect the cable screens at one end. Refer to the section on 'EARTHING' in the User Guide. WARNING: There is danger of explosion if the battery is incorrectly replaced. Replace the battery with an Allen & Heath recommended part. Using a different battery, recharging or dissassembling the battery may present a danger due to fire or explosion. Dispose of used batteries promptly according to the manufacturer's instructions. Keep all batteries away from childeren IMPORTANT STATIC ELECTRICITY PRECAUTIONS Many of the components in the DR 128 are extremely sensitive to static electricity. The following procedures reduce the possibility of damaging components: 1.) 2.) 3.) 4.) 5.) 6.) Before handling any components or touching anything inside the unit, discharge your body's static electric charge by touching a grounded (earthed) surface. Wear a grounding wrist strap if one is available. Do not remove parts from their antistatic containers or bags until you are ready to install them. When removing circuit boards (PCBs) or chips from a unit, immediately place them in an antistatic bag. 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 SERVICE MANUAL 4 Service Procedures Removing a connector circuit board assembly Before beginning any service work, remove all power to the unit and disconnect any signal cables where necessary. Adopt static electricity working procedures when carrying out service work. Ensure adequate lighting and use the correct tools. Access to the connector circuit board options can be achieved without the removal of the circuit board assemblies. To remove the lower connector circuit board assembly the upper assembly will have to be removed first. 1.) Working from the front of the unit remove the 6 cover screws and remove the cover. Access to both connector circuit board options can be achieved at this stage. Refer to the Hardware Configuration section in the Installation guide for information on changing the connector board options. 2.) Unplug the harnesses to the connector circuit board assembly to be removed. Upper connector board assembly A B Lower connector board assembly 3.) Working from the rear of the unit, remove the connector fixing screws (A) and using a 5mm AF nut driver remove the D type connector fixings (B). 4.) The circuit board assemblies can now be removed by carefully easing them off the plastic mounting pillars. When all service work is complete, remove all debris such as solder, component legs and wire clippings from inside the unit and check your work carefully before reassembly. 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 SERVICE MANUAL Service Procedures 5 Removing the CPU microprocessor circuit board assembly Except for the battery (BAT1), there are no serviceable parts on the microprocessor circuit board assembly. If a fault on the microprocessor circuit board is suspected then confirmation of a fault is by board replacement only Before beginning any service work, remove all power to the unit and disconnect any signal cables where necessary. Adopt static electricity working procedures when carrying out service work. Ensure adequate lighting and use the correct tools. 1.) Working from the front of the unit remove the 6 cover screws and remove the cover. 2.) Unplug the harnesses to the microprocessor circuit board assembly. Microprocessor board assembly DSP Expander board assembly 3.) Squeeze the tops of the plastic mounting pillars and ease each corner of the circuit board off each pillar. Repeat the procedure for each pillar until circuit board assembly is free. When all service work is complete, remove all debris such as solder, component legs and wire clippings from inside the unit and check your work carefully before reassembly. 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 SERVICE MANUAL 6 Service Procedures Removing the front panel circuit board assembly Before beginning any service work, remove all power to the unit and disconnect any signal cables where necessary. Adopt static electricity working procedures when carrying out service work. Ensure adequate lighting and use the correct tools. 1.) Working from the front of the unit remove the 6 cover screws and remove the cover. 2.) Unplug the harnesses to the front panel circuit board assembly. 3.) Remove any DSP expander cards fitted to the microprocessor circuit board. Front Panel board assembly DSP Expander board assembly 3.) Remove the 8 circuit board fixing screws and carefully ease the assembly clear of the microprocessor circuit board and clear of the unit. The front panel LCD display circuit board is mounted onto the front panel circuit board assembly and can be removed by unscrewing the 4 mounting screws. When all service work is complete, remove all debris such as solder, component legs and wire clippings from inside the unit and check your work carefully before reassembly. 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 SERVICE MANUAL Service Procedures 7 Removing the power supply circuit board assembly Before beginning any service work, remove all power to the unit and disconnect any signal cables where necessary. Adopt static working procedures when carrying out service work. Ensure adequate lighting and use the correct tools. 1.) Working from the front of the unit remove the 6 cover screws and remove the cover. 2.) Unplug the the harnesses to the power supply circuit board assembly. 3.) Before disconnecting the transformer harness wires make a note of there colour and position on the circuit board. Power Supply board assembly Fuse - external DC input protection 4.) Unscrew the 2 circuit board mounting screws and remove the circuit board and heatsink assembly. When all service work is complete, remove all debris such as solder, component legs and wire clippings from inside the unit and check your work carefully before reassembly. 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 SERVICE MANUAL 8 Spare parts ORDERING A DR128 UNIT To order a new unit please specify the model number and AC mains voltage required. MODEL DESCRIPTION DR128 12 Inputs 8 outputs ORDER CODE DR128/volts ORDERING AN OPTION To order an option please specify the model number. DESCRIPTION DR1 DSP expander card DR1 DSPD delay expander card DR1 SYSNET option ORDER CODE DR1-DSPX DR1-DSPD DR1-SNET MANUALS, SOFTWARE AND SUPPORT DOCUMENTATION DESCRIPTION DR128 User Guide DR128 Service Manual DR128 Brochure DR128 WinDR Disk (1 of 2) DR128 WinDR Disk (2 of 2) ORDER CODE AP2973 AP2974 AP2903 002-272 002-273 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) 2-point Crosshead screwdriver (M4, 6AB) 5mm AF Nutdriver AT0004 AT0002 ORDERING AN ASSEMBLY The following assemblies for the DR128 are supplied fully tested. Please quote the description and order code for the part required. Printed circuit (PCB) assemblies: Power supply PCB assembly (inc heatsink) Front panel PCB assembly (exc LCD display) CPU microprocessor PCB assembly Mic connector (Upper) PCB assembly Line / Output connector (Lower) PCB assembly 002-205 002-187 002-184 002-185 002-186 40 way Master harness 26 way front panel harness 26 way Mic / Line harness 9 way Mic / Line power harness 9 way CPU power harness 26 way LCD display harness AL2711 AL2713 AL2712 AL2705 AL2706 AL2714 IDC connector harnesses: DR128 SERVICE MANUAL Spares kit 9 Ordering a Spares kit 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. Individual spare parts may be ordered. Please quote the description and order code for the part required. DESCRIPTION ORDER CODE QTY Fixings: Screw 4AB x 5/16" Pan Pozi Black Screw M2.5 x 4mm Pan Pozi Black Screw M3 x 10mm Pan Pozi Black Screw M3 x 16mm Pan Pozi Black Screw M4 x 8mm CSK Pozi Black Screw M3 x 8mm SKT Dome Black Half Nut M3 Nylock Nut M3 Washer M3 Shakeproof Pillar M4 x 8mm Nylon Pillar Support 6.4mm Nylon Pillar Snap-in 6mm Nylon Pillar Snap-in 31.8mm Nylon Pillar M2.5 x 9mm Nylon tapped Pillar M3 x 6mm Nylon tapped Spacer M3 x 15mm Nylon AB2810 AB2944 AB0076 AB0079 AB2777 AB2942 AB0094 AB0102 AB0244 AB0256 AB2171 AB2233 AB2772 AB2945 AB3098 AB2775 10 5 5 5 5 5 5 10 5 4 4 4 4 4 4 4 Potentiometers, switches, and connectors: 5KD reverse (502RD) Switch 2PCO Momentary Preset 4K7 (Output gain) Preset 22K (Line input gain) Button 12.5mm Square Black Button Round Black Button Round Grey Phono Dual PCB mount XLR 3 Pin Female PCB Mount XLR 3 Pin Male PCB Mount AI8111 AL8058 AE2871 AE2969 AJ0348 AJ2887 AJ2888 AL0556 AL2414 AL2413 5 10 4 2 15 5 5 2 5 5 AE2754 AE8069 AE0020 AE0221 AE0046 AE2818 AE2742 AE2857 AE2656 AE0345 AE2749 AE2755 AE2748 5 10 10 5 2 1 1 3 2 1 2 1 1 AH0205 AL0206 - LEDs and Semiconductors: LED 5 x 2mm Tri-colour Transistor 2SB737 PNP Transistor BC549 NPN IC NE5532N Dual Op Amp IC TL072 Dual Op Amp IC LM393N Comparator IC MAX 202CPE RS232 IC AK5391-VS 24-bit ADC IC CS4329-KP 20-bit DAC IC CMOS 74HC03 4 NAND 2 IC CMOS 74HC165 IC CMOS 74HC4094 IC TLP521-4A Quad Opto POWER SUPPLY: Mains lead IEC-2pin EURO Mains lead IEC-3pin UK DR128 SERVICE MANUAL 10 Spares kit Mains lead IEC-3pin US (C33) Mains Fuse 20mm T1.6A (USA,CAN) Mains Fuse 20mm T630mA (UK,EU) Mains Fuse 20mm T5A (ext DC protection) Transformer 60VA Bridge Rectifier 4A in line IC Regulator 7805 (+5V DC) IC Regulator 7815 (+15V DC) IC Regulator 7915 (-15V DC) IC Regulator Adjustable LM2575T-ADJ IC Regulator Adjustable LM2576T-ADJ IC Regulator LM2576T-5.0 (+5V) Transistor MOSFET RFP8P05 Diode 6A05 6A 50V Diode UG1B Fast/Soft 1A 100V Diode UG8AT Fast/Soft 8A 50V Diode SBYV28-100 UltraFast 3.5A Zener Diode BZX55C2V7 Inductor 100uH 3A S/SWITCH Inductor 470uH 2A S/SWITCH Inductor 68uH 3A S/SWITCH Insulating kit TO220 AL0323 AL0466 AL0297 AL2270 AM2757 AE0351 AE0308 AE0047 AE0048 AE2814 AE2816 AE2815 AE2977 AE2819 AE2820 AE2821 AE2947 AE0231 AE2825 AE2826 AE2827 AA0693 5 5 5 1 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 6 002-203 AA2717-LR AA2735 AL0334 AE2734 AP2837 AE2970 AF3107 5 1 5 5 Miscellaneous: DR128 Packing assembly DR128 Rack mounting brackets (per pair) DR128 Acrylic Fascia Jumper socket Front panel LCD display Battery 3V 180mAh PCBV (DR1 CPU PCB) Inductor 150uH 280mA (Mic Connector PCB) EMI filter 470pF 100V (Connector PCB assy) DR128 SERVICE MANUAL