Allen ML4000+Service+Manual电路图.pdf

SERVICE MANUAL SERVICE MANUAL Publication AP4316 Dual Function Live Sound Console RadioFans.CN 收音机爱 好者资料库 2 ML4000 Service Manual Introduction This service manual provides technical information on the Allen & Heath ML4000 audio console. Included is the technical specification, system block diagram, circuit schematics with board layouts, and a spare parts list. Information on the power supply is available in a separate publication. Only technically qualified service personnel should carry out service work on the console and its power supply. 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. We are able to offer further product support through our world-wide network of approved dealers and service agents. You can also access our Web site on the Internet for information on our product range and further technical support. To help us provide the most efficient service please keep a record of the console serial number, and date and place of purchase to be quoted in any communication regarding this product. The serial number is located on the rear panel. Check out our home site for information on the company and its pedigree, our full product range and our design philosophy. We also have a site dedicated to the ML Series consoles. www.allen- ML4000 Service Manual AP4316 Issue 3 Copyright 2002 Allen & Heath. All rights reserved This product complies with the European Electromagnetic Compatibility directives 89/336/EEC & 92/31/EEC and the European Low Voltage Directives 73/23/EEC & 93/68/EEC. This product has been tested to EN55103 Parts 1 & 2 1996 for use in Environments E1, E2, E3, and E4 to demonstrate compliance with the protection requirements in the European EMC directive 89/336/EEC. During some tests the specified performance figures of the product were affected. This is considered permissible and the product has been passed as acceptable for its intended use. Allen & Heath has a strict policy of ensuring all products are tested to the latest safety and EMC standards. Customers requiring more information about EMC and safety issues can contact Allen & Heath. NOTE: Any changes or modifications to the console not approved by Allen & Heath could void the compliance of the console and therefore the users authority to operate it. Manufactured in the United Kingdom by Allen & Heath Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK http:/www.allen- RadioFans.CN 收音机爱 好者资料库 ML4000 Service Manual 3 Contents Important Safety Instructions . 4 Mains Plug Wiring Instructions. 5 General Precautions. 5 ML4000 Key Features. 6 Front Panel Layout . 7 Rear Panel Layouts. 8 Technical Specifications. 9 System Block Diagram. 10 Installation Details. 12 Earthing. 13 Audio Connector Types and Wiring. 14 Gain Structure. 15 MIDI. 16 Console Computer and Operating Software . 19 Internal Option Links . 20 Internal assembly assignments. 20 The Range . 21 Ordering Spares. 21 Technical Drawings. 22 BLOCK DIAGRAM. M1 INTERNAL ASSEMBLY MAP.M2-M3 MONO INPUT .D1-D4 STEREO INPUT .D5-D8 MASTER CONNECTOR.D9-D10 GROUP 1,3,5,7.D11-D13 GROUP 2,4,6,8.D14-D17 AUX 9.D18-D21 AUX 10.D22-D25 AUX 11.D26-D29 AUX 12.D30-D33 MASTER DISTRIBUTION.D34 LRC VU METERS.D35-D36 LRC LED METERS.D37 1-12 VU METERS.D38-D40 SYSLINK INPUT.D41 MIDI/PSU .D42-D43 DC POWER WIRING.D44 CPU.D45-D48 GRAUX SLAVE.D49-D50 VCA MASTER SLAVE.D51 LRC SLAVE.D52-D53 MASTER FADER.D54 MUTE GROUP.D55 MONO FADER SLAVE.D56-D57 MONO FADER.D58 FADER BISCUIT (misc) .D59 SYSLINK OUTPUT.D60-D61 RadioFans.CN 收音机爱 好者资料库 4 ML4000 Service Manual Important Safety Instructions WARNINGS - Read the following before proceeding : ATTENTION: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR Read instructions: Retain these safety and operating instructions for future reference. Adhere to all warnings printed here and on the console power unit. Follow the operating instructions printed in this user guide and the power unit user guide. Do not remove covers: Operate the power unit with its covers correctly fitted. Refer any service work to competent technical personnel only. Power sources: Connect the power unit to a mains power only of the type described in this User Guide and marked on the rear panel. Use the power cord with sealed mains plug appropriate for your local mains supply as provided with the console. If the provided plug does not fit into your outlet consult your service agent for assistance. Power cord routing: Route the power cord so that it is not likely to be walked on, stretched or pinched by items placed upon or against it. Grounding: Do not defeat the grounding and polarisation means of the power cord plug. Do not remove or tamper with the ground connection in the power cord. Water and moisture: To reduce the risk of fire or electric shock do not expose the power unit or console to rain or moisture or use it in damp or wet conditions. Do not place containers of liquids on it which might spill into any openings. Ventilation: Do not obstruct the ventilation slots or position the console or power unit where the air flow required for ventilation is impeded. If the console is to be operated in a flightcase ensure that it is constructed to allow adequate ventilation. Heat and vibration: Do not locate the power unit in a place subject to excessive heat or direct sunlight as this could be a fire hazard. Locate the console and its power unit away from any equipment which produces heat or causes excessive vibration. Servicing: Switch off the equipment and unplug the power cord immediately if it is exposed to moisture, spilled liquid, objects fallen into the openings, the power cord or plug become damaged, during lightening storms, or if smoke, odour or noise is noticed. Refer servicing to qualified technical personnel only. Installation: Install the console in accordance with the instructions printed in this User Guide. Do not connect the output of power amplifiers directly to the console. Use audio connectors and plugs only for their intended purpose. CAUTION WARNING: This equipment must be earthed. ML4000 Service Manual 5 Important Mains Plug Wiring Instructions. The power unit is supplied with a moulded mains plug fitted to the AC mains power lead. Follow the instructions below if the mains plug has to be replaced. The mains lead wires are coloured in accordance with the following code: WIRE COLOUR TERMINAL European USA/Canada L LIVE BROWN BLACK N NEUTRAL BLUE WHITE E EARTH GND GREEN & YELLOW GREEN The wire which is coloured Green and Yellow must be connected to the terminal in the plug which is marked with the letter E or with the Earth symbol. This appliance must be earthed. The wire which is coloured Blue must be connected to the terminal in the plug which is marked with the letter N. The wire which is coloured Brown must be connected to the terminal in the plug which is marked with the letter L. Ensure that these colour codes are followed carefully in the event of the plug being changed. General Precautions Damage : To prevent damage to the controls and cosmetics avoid placing heavy objects on the control surface, scratching the surface with sharp objects, or subjecting the console to rough handling and vibration. Environment : Protect from excessive dirt, dust, heat and vibration when operating and storing. Avoid tobacco ash, smoke, drinks spillage, and exposure to rain and moisture. If the console becomes wet, switch off and remove mains power immediately. Allow to dry out thoroughly before using again. Radiation : To avoid induced noise and interference pickup do not operate the console close to strong sources of electromagnetic radiation such as power supplies, video monitors, lighting cables and dimmers. Cleaning : Avoid the use of chemicals, abrasives or solvents. The control panel is best cleaned with a soft brush and dry lint-free cloth. Stubborn marks can be removed using a cloth dampened with isopropyl alcohol. Do not leave marking tape stuck to the console for long periods of time as the adhesive can degrade and leave a sticky residue. The faders, switches and potentiometers are lubricated for life. The use of electrical lubricants on these parts is not recommended. Refer to the power unit user guide for instructions on cleaning its ventilation filters. Transporting : The console should be transported in the original packing or purpose built foam lined flightcase. Protect the control surface from damage during transit. The console is a large and heavy item. To avoid injury ensure adequate man power and precaution when lifting or moving the console. 6 ML4000 Service Manual ML4000 Key Features The Allen & Heath ML4000 is a large format VCA equipped dual function live sound console providing many of the features of its larger brother the ML5000. It can be quickly configured for front-of-house (FOH) or stage monitor mixing. As one console suitable for both applications it is equally well suited to installation, rental and touring. It offers an IO capability and feature set that satisfies the latest trends in live sound engineering, in particular the growing number of inputs and outputs for multi-speaker house and monitor systems, demands of stereo in-ear monitoring, 3 speaker LCR imaging, advanced grouping and automation. The design ensures on-the-road durability, a clear layout for easy walk up and go operation, and no-compromise audio performance. Inputs and Outputs 3 Standard frame sizes: 32+2, 40+2, 48+2 (mono + dual stereo channels) 32, 40, 48 mono mic/line inputs with inserts and direct outputs 2 dual stereo line inputs 24 input sidecar to expand to a maximum 96 inputs Main Left, Right and Centre outputs with inserts, Centre configurable as the engineers monitor 8 Groups, 12 Auxes: Group/Aux 1-8 and Aux 9-12 with faders and inserts, Aux 1-8 with rotaries 11x4 Matrix 2-Track monitor input and recording send Stereo headphones and local monitors Talkback mic input ClearCom compatible intercom interface Groups and Automation 8 VCA groups with mutes and PAFL monitoring 8 audio groups with LCRplus sub grouping 8 mute groups MIDI accessible snapshot memories MIDI mute on/off, snapshot recall and dump in/out control Channels can be made safe from the automation Processing and Control 4-Band full sweep mono EQ with switched Q mids, 4-band fixed frequency stereo EQ Sweepable high pass filter LCRplus 3 speaker imaging system Protected mode switching to configure the console for FOH or monitor application Intelligent PAFL system with all-clear, PFL/in-place AFL, priority, auto-cancel/add mode Assignable talkback and intercom 1kHz tone and pink noise generator for system line-up and testing Full console monitoring and extensive metering of inputs, mix busses and outputs ML4000 Service Manual 7 Front Panel Layout STEREO GRP/AUX 2 PAD OOO OOO 8 VCA GROUP 30 40 5 6 7 10 20 1 2 3 4 0 5 -6 SIG 10 5 30 40 10 20 30 40 10 20 0 5 10 5 0 5 5 10 PAFL 0 +6 PK SAFE/EDIT MUTE PAN RL = LRC M E T U PAFL SAFE PAFL SAFE M E T U 1 VCA 1 30 OO VCA 2 2 30 OO +6+6 2 N BLEND 12 O O =+ N A P LCR +6 MAIN MIX O O O O V E L AUX AUX 11 11-12 +6 STEREO PRE +6 9-10 9 O O A P V E L AUX 10 +6 PRE 8 OO AUX AUX PRE STEREO +6 -6-6 5 20 10 SIG 0 5 5 20 10 SIG 0 5 AFL STEREO EDIT/SAFE PK 0 +6 PK +6 0 EDIT/SAFE AFL GROUPS OO OO 7 AUX +6 +6 OO 5 6 AUX AUX +6 4 OO OO AUX +6 +6 O O 3 AUX +6 TB L MUTE PAN LR = RLR MUTE TB LRC PAN C = AFL MIX MAIN LCR BLEND += OO +LCR BLEND = MIX MAIN OO AFL 6 LF 1 O O AUX AUX PRE +6 -15+15 EQ IN LM 90 -15 50 20Hz +15 130 200Hz -15 80 35Hz 45 180+15 300 Q 1k 450 reverse GRP/AUX 1 MONITOR AUX 1 FOH AUX 2 reverse mode +6 +6 +6OO OO 8 OO 7 AFL O MUTE O+6 5k1k 500Hz 7007k 15k Q HM 2kHz -15 3k 20kHzHF +15 GAIN 7k 3k 20Hz 30 10k IN 300 400 60 20 10- 10 100 50 20dB 40 40 C3 +6 +6 +6 5 OO OO OO 4 LEV TB OO+6 +6 +6 OO 2 OO 1 O O O O R +6 +6 L +48V SAFE/EDIT WEDGE OO OOOO OOOO OOOOO OO O 10 0 5 10 20 30 40 30 40 30 40 10 20 10 20 30 40 10 20 0 5 0 5 10 5 10 5 0 5 10 5 30 40 10 20 30 40 10 20 0 5 10 5 0 5 5 10 VCA 5 SAFE PAFL SAFE M E T U PAFL M E T U SAFE VCA 4VCA 3 3 30 O O 30 OO 45 30 OO PAFLPAFL M E T U M E T U SAFE PAFL SAFE M E T U VCA 6 6 30 O O 7 VCA 7 OO 30 5 30 40 30 40 10 20 10 20 30 40 10 20 0 5 0 5 10 5 10 5 0 5 5 10 ASSIGN USING CH MUTES SELECT USING GROUP MUTE EDIT MUTE & VCA GRPS PAFLPAFL MM T T E E U U SAFESAFE MUTE MUTE GROUPS 8 VCA 8 30 OO 30 OO 910 30 OO SAFE/EDIT PKPK SAFE/EDIT M E T U PK M E T U RMAINL 11 30 O O 12 C O 30 O O OOO SIG 8 GROUP VCA 5 6 7 8 30 40 VCA GROUP 10 20 5 6 7 1 2 3 4 -6 SIG 1 0 5 2 3 4 5 10 -6 30 40 10 20 0 5 10 5 ST2 SAFE/EDITSAFE/EDIT MONITOR C mode +6 0 PK M E T U PAFL +6 0 PK MUTE ST1 L LR BAL LR = C BAL LR PAFL MUTE R = C OSC/NOISE 1kHz OSC PINK NOISE INTERCOM TALK TO 100 +6+6+6+6+6+6 LCR PAN BLEND EDIT/SAFE -6-6-6 SIG 5 20 10 5 20 10 SIG