Allen_&_Heath_Xone_32_DJ_Mixer_Service_Manual电路图.pdf

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1、 SERVICE MANUAL SERVICE MANUAL Publication AP4265 P R O F E S S I O N A L D J M I X E R RadioFans.CN 收音机爱 好者资料库 2 XONE:32 Service Manual Allen & Heath Technical Support This service manual provides technical information for servicing the XONE:32. Whilst we believe the information presented to be rel

2、iable we do not assume responsibility for inaccuracies. We also reserve the right to make changes in the interest of further product development. For further technical support please contact us at Allen & Heath. The contact details are printed below. To help us provide the most efficient service ple

3、ase quote the console serial number in any communication regarding this product. Our Internet site provides further information on our full product range as well as contact details for our distribution network. This product complies with the European Electromagnetic Compatibility directives 89/336/E

4、EC & 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

5、 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 infor

6、mation 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. XONE:32 Service Manual AP4265 Issue 2 Copyright 2004 Allen & Heath.

7、All rights reserved Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK Web: http:/www.allen- Email: salesallen- supportallen- sparesallen- RadioFans.CN 收音机爱 好者资料库 XONE:32 Service Manual 3 Contents Important Safety Instructions .4 Mains Plug Wiring Instructions.4 Key Features.5 Application Dra

8、wing .5 EQ, Crossfader and VCF Curves .6 Front and Rear Panel Layouts.7 Specifications .8 Block Diagram.9 Installation.10 Cables and Connections.11 Gain and Operating Levels.12 Order Codes.13 Replacing the Crossfader.13 Tips and Troubleshooting .14 Internal Layout. D1 STEREO INPUT PCB. D2 STEREO INP

9、UT Circuit. D3 LEFT PCB . D4 LEFT Circuit . D5 MASTER PCB . D6 MASTER Circuit Sheet 1. D7 MASTER Circuit Sheet 2. D8 PSU/CROSSFADE PCB. D9 PSU/CROSSFADE Circuit Sheet 1. D10 PSU/CROSSFADE Circuit Sheet 2. D11 PSU/CROSSFADE Circuit Sheet 3. D12 RadioFans.CN 收音机爱 好者资料库 4 XONE:32 Service Manual Importa

10、nt Safety Instructions Read First Read instructions: Retain these safety and operating instructions for future reference. Adhere to all warnings printed here and on the console. Power sources: Connect the console to a mains power only of the type described in this Service Manual and marked on the re

11、ar panel. The power source must provide a good ground connection. Power cord: 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 the Allen & Heath technical support department for

12、assistance. 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. Ventilation:

13、 Do not obstruct the ventilation slots or position the console where the air flow required for ventilation is impeded. If the console is to be operated in a rack unit or flightcase ensure that it is constructed to allow adequate ventilation. Moisture: To reduce the risk of fire or electric shock do

14、not expose the 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. Heat: Do not locate the console in a place subject to excessive heat or direct sunlight as this could be a fire hazard. Locate the console awa

15、y from any equipment which produces heat such as power supplies, power amplifiers and heaters. Environment: Protect from excessive dirt, dust, heat and vibration when operating and storing. Avoid tobacco ash, drinks spillage, and smoke, especially that associated with smoke machines. Handling: To pr

16、event damage to the controls and cosmetics avoid placing heavy objects on the control surface, scratching the surface with sharp objects, or rough handling and vibration. Protect the controls from damage during transit. Use adequate packing if you need to ship the unit. Servicing: Switch off the equ

17、ipment 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. Installation: Install the console in accordance with the instructions

18、printed in the User Guide. Do not connect the output of power amplifiers directly to the console. Use audio connectors and plugs only for their intended purpose. Important Mains Plug Wiring Instructions The console is supplied with a moulded mains plug fitted to the AC mains power lead. Follow the i

19、nstructions below if the mains plug has to be replaced. The wire which is coloured Green/Yellow or Green 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 or White must be connecte

20、d to the terminal in the plug which is marked with the letter N. The wire which is coloured Brown or Black 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. XONE:32 Service Ma

21、nual 5 Key Features 3 Stereo channels with switchable line and RIAA phono inputs DJ microphone input Separate main mix, record, booth and headphones monitor outputs Stereo Aux output for effects 3 Band +6/-26 asymmetric EQ with extended cut Removable VCA CROSSFADER with reverse and variable contour

22、Crossfade position dependent TRANSMUTE buttons for transform and punch effects Analogue state variable VCF filter effects with filter type, frequency and resonance controls LFO filter frequency control with finger tap tempo select DRS Digital Recall System with 4 user programmable presets for filter

23、 effects Advanced cue system with interlock and cue/mix fader for performance preview Extensive channel and output metering Sensible layout of setup and performance controls across three surfaces High grade dual rail gold contact crossfader Universal internal power supply for any worldwide mains vol

24、tage 6 XONE:32 Service Manual EQ Curves Crossfader Curves VCF Curves 101001kHz10k20k 0dB +5 +10 -5 -10 -15 -20 -25 -30 HIMIDLO +6dB BOOST -26dB CUT -36 0dB -6 -12 -18 -24 -6dB -30 DIP -36 0dB -6 -12 -18 -24 -30 CONSTANT POWER -36 0dB -6 -12 -18 -24 -30 CUT -3dB0dB LO 0dB RESONANCE LO (MILD) HI (WILD

25、) MID FREQUENCYHI 10k201kHz10020k 0dB +5 +10 +15 +20 -5 -10 -15 -20 LO-PASS FILTER LOHI BAND-PASS FILTER LOHI 10k201kHz10020k 0dB +5 +10 +15 +20 -5 -10 -15 -20 10k201kHz10020k 0dB +5 +10 +15 +20 -5 -10 -15 -20 HI-PASS FILTER LOHI XONE:32 Service Manual 7 Front and Rear Panel Layouts Welcome to the X

26、ONE:32 professional DJ mixer. This stylish and solidly built 3 channel club format console presents a unique combination of performance tools for the professional DJ. Above all, it features a sound quality second to none. XONE:32 has been designed and constructed using the same rigorous standards we

27、 apply to our large format professional consoles used and respected by top engineers and performers throughout the world. Please refer to the User Guide for the operating instructions and application notes. 100 - 240V 47-63Hz 30W MAX P R O F E S S I O N A L D J M I X E R AVIS: RISQUE DE CHOC ELECTRI

28、QUE - NE PAS OUVRIR. DRS DIGITAL RECALL SYSTEM P R O F E S S I O N A L D J M I X E R 8 XONE:32 Service Manual Specifications 0dBu = 0.775 Volts rms, +4dBu = 1.23V rms 0dBV = 1 Volt rms, -10dBV = 316mV rms Max output level TRS +21dBu into 2k ohm RCA +15dBu into 10k ohm Headroom Channels +21dB Mix to

29、output +23dB Freq response +0/-1dB 10Hz to 30kHz Distortion 0.02% THD+N 1kHz +10dBu Crosstalk 10k ohm -15 to +15dBu Stereo PHONO IN RCA phono RIAA 47kohm/330pF 2 to 100mV Output Connections Type Impedance Level MIX OUT L,R Electronically balanced TRS jack 75 ohm 0dBu BOOTH OUT L,R Impedance balanced

30、 TRS jack 75 ohm -2dBu AUX OUT L,R Impedance balanced TRS jack 75 ohm -2dBu RECORD OUT L,R RCA phono 600 ohm -10dBV HEADPHONES Tip = L Ring = R 30 to 600 ohm, 70 ohms recommended LEVEL TRIM R STEREO INPUTS PHONO L L R LINE RIAA SOURCE XONE:32 AUX AUX CUE R CUE MIX AUX SEND L LEVEL PHONES L R METER M

31、ID LO 3 BAND EQ HI CUE BLOCK DIAGRAM CUE MIX AUX MIX MAIN LEVEL BOOTH -10dBV PRE-FADE R L BOOTH OUT RECORD OUT R L MAIN BAL MAIN OUT CH1 LEVEL L R MASTER AUX OUT L R BALANCE FADER R PHONO L L R LINE RIAA METER MID LO 3 BAND EQ HI CUE R PHONO L L R LINE RIAA METER MID LO 3 BAND EQ HI CUE GAIN LO 2 BA

32、ND EQ HI MIC LEVEL TRIM FADER CH2 LEVEL TRIM FADER CH3 HPF CROSSFADER X VCA REVERSE CONTOUR XY OFF Y VCA SOURCE SOURCE AUX BALANCE AUX BALANCE ON FILTER BPF LPF RESONANCE HPF VCF DEPTH FREQUENCY 4 3 2 1 USER PRESETS LFO X 2 TAP TEMPO ON L R MAIN MIX FREQ FILTER FILTER CUEMAIN CH FILTER ON/OFF FILTER

33、 TYPE LFO ON/OFF X 2 ON/OFF STORE AND RECALL THE FOLLOWING: 10 XONE:32 Service Manual 100 - 240V 47-63Hz 30W MAX AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR. Installation Connecting Mains Power Read the SAFETY INSTRUCTIONS printed at the front of this Service Manual and on the rear panel. Check

34、that the correct mains lead with moulded plug has been supplied with your console. The power supply accepts 50/60Hz AC mains voltages within the range 100-240V without changing any fuses or settings. It is standard practice to turn connected power amplifiers down or off before switching the console

35、on or off. This prevents any audible switch-on thumps. Ensure that the IEC mains plug is pressed fully into the rear panel socket before switching on. Earthing The connection to earth (ground) in an audio system is important for two reasons: 1. SAFETY - To protect the operator from high voltage elec

36、tric shock, and 2. AUDIO PERFORMANCE - To minimise the effect of earth (ground) loops which result in audible hum and buzz, and to shield the audio signals from interference. For safety it is important that all equipment earths are connected to mains earth so that exposed metal parts are prevented f

37、rom carrying high voltage which can injure or even kill the operator. It is recommended that the system engineer check the continuity of the safety earth from all points in the system including microphone bodies, turntable chassis, equipment cases, and so on. The same earth is also used to shield au

38、dio cables from external interference such as the hum fields associated with power transformers, lighting dimmer buzz, and computer radiation. Problems arise when the signal sees more than one path to mains earth. An earth loop (ground loop) results causing current to flow between the different eart

39、h paths. This condition is usually detected as a mains frequency audible hum or buzz. To ensure safe and trouble-free operation we recommend the following: Have your mains system checked by a qualified electrician If the supply earthing is solid to start with you are less likely to experience proble

40、ms. Do not remove the earth connection from the console mains plug The console chassis is connected to mains earth through the power cable to ensure your safety. Audio 0V is connected to the console chassis internally. If problems are encountered with earth loops operate the audio ground lift switch

41、es on connected equipment accordingly, or disconnect the cable screens at one end, usually at the destination. Make sure that turntables are correctly earthed A chassis earth terminal is provided on the console rear panel to connect to turntable earth straps. Deal with ground loops Should you experi

42、ence hum or buzz caused by ground loops, check first that each piece of equipment has its own separate path to ground. If so, operate ground lift switches on connected equipment in accordance with the instruction manuals. Alternatively disconnect the cable screen at the destination end only. This br

43、eaks the offending loop while still maintaining the signal shielding down the length of the cable. Use low impedance sources such as microphones and line level equipment rated at 200 ohms or less to reduce susceptibility to interference. The console outputs are designed to operate at very low impeda

44、nce to minimise interference problems. Use balanced connections for the microphone and main outputs as these provide further immunity by cancelling out interference that may be picked up on long cable runs. Refer to the cable drawing for information on how to connect balanced and unbalanced equipmen

45、t. Route cables to avoid interference To avoid interference pickup keep audio cables away from mains power units and cables, thyristor dimmer units or computer equipment. Where this cannot be avoided, cross the cables at right angles to minimise interference. Use good quality cables and connectors a

46、nd check for correct wiring and reliable solder joints. Allow sufficient cable loop to prevent damage through stretching. XONE:32 Service Manual 11 Cables and Connections The XONE:32 uses professional grade 3 pin XLR, 1/4 TRS jack and RCA PHONO sockets. The following mating plugs may be used: The microphone input XLR connector is 3 wire balanced. This has 3 connector pins: Pin 1 = ground (screen), Pin 2 = signal hot (+), Pin 3 = signal cold (-). The jack sockets are the 3 pole TRS type. These are wired to work with either the balanced TRS or the unbalanced 2 pole TS type