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Dual Function Live Sound Console
SERVICE MANUAL
Publication AP4511
Introduction
This service manual provides technical information on the Allen & Heath ML3000 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-heath.com www.mlseries.com
ML3000 Service Manual AP4511 Issue 1
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-heath.com
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ML3000 Service Manual
Contents
Important Safety Instructions ............................4 Mains Plug Wiring Instructions..........................5 General Precautions .........................................5 ML3000 Key Features.......................................6 Front Panel Layout............................................7 Rear Panel Layouts...........................................8 Technical Specifications....................................9 System Block Diagram.............................. 10-11 Installation Details ...........................................12 Earthing ...........................................................13 Audio Connector Types and Wiring ................14 Gain Structure .................................................15 MIDI........................................................... 16-18 Console Computer and Operating Software ...19 Internal Option Links .......................................20 Internal assembly assignments.......................20 The Range ......................................................21 Ordering an Assembly............................... 22-23 Ordering a Spares Kit................................ 24-27 SYS-LINK fitting instructions ....................... (1-4) TECHNICAL DRAWINGS .................................. BLOCK DIAGRAM .........................................M1 MONO INPUT .......................................... D1-D3 STEREO INPUT ...................................... D4-D7 MASTER CONNECTOR........................ D8-D10 GROUP / AUX ..................................... D11-D13 AUX MATRIX ....................................... D14-D16 MASTER DISTRIBUTION ................... D17-D18 SYSLINK INPUT .................................. D19-D20 MIDI POWER....................................... D21-D22 CPU ..................................................... D23-D26 LCR SLAVE ......................................... D27-D29 MASTER FADER................................. D30-D33 MASTER .............................................. D34-D37 MONO FADER..................................... D38-D40 MONO CONNECTOR.......................... D41-D42 SYSLINK OUTPUT .............................. D43-D44 METER MASTER ................................ D45-D47 METER 1-8 & 9-16 V2 ......................... D48-D50 METER LEDBAR ......................................... D51
ML3000 Service Manual
3
Important Safety Instructions
WARNINGS
- Read the following before proceeding :
CAUTION
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. Operate the power unit with its covers correctly fitted. Refer any service work to competent technical personnel only. 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. Route the power cord so that it is not likely to be walked on, stretched or pinched by items placed upon or against it. 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.
Do not remove covers: Power sources:
Power cord routing: Grounding:
WARNING: This equipment must be earthed.
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. 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. 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. 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. 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.
Ventilation:
Heat and vibration:
Servicing:
Installation:
4
ML3000 Service Manual
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: TERMINAL European L N E LIVE NEUTRAL EARTH GND BROWN BLUE GREEN & YELLOW WIRE COLOUR USA/Canada BLACK WHITE 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. 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. 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. 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. 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.
Environment :
Radiation :
Cleaning :
Transporting :
ML3000 Service Manual
5
ML3000 Key Features
The Allen & Heath ML3000 is a small footprint, affordable VCA equipped dual function live sound console providing many of the features of its larger brothers the ML4000 and 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 requirements of 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 nocompromise audio performance.
Inputs and Outputs
· · · · · · · · · · · · 3 Standard frame sizes: 24+2, 32+2, 40+2 (mono + dual stereo channels) 24, 32, 40 mono mic/line inputs with inserts and direct outputs 2 dual stereo line inputs Sys-Link option to link consoles for more channels Main Left, Right and Centre outputs with inserts, Centre configurable as the engineers monitor 4 Groups, 8 Auxes: Group/Aux 1-4 and Aux 5-8 with faders and inserts, Aux 1-4 with rotaries Aux 7/8 configurable as mono or stereo with level and pan controls 8x4 Matrix 2-Track monitor input and recording send Stereo headphones and local monitors Talkback mic input Talkback/Oscillator output
Groups and Automation
· · · · · 8 VCA groups with mutes 4 audio groups with LCRplusTM sub grouping 8 mute groups MIDI accessible snapshot memories MIDI mute on/off, snapshot recall and dump in/out control
Processing and Control
· · · · · · · · 4-Band 2 sweep mono EQ, 4-band fixed frequency stereo EQ Sweepable high pass filter LCRplusTM 3 speaker imaging system Protected mode switching to configure the console for FOH or monitor application PFL override AFL override selected monitor source Assignable talkback 1kHz tone and pink noise generator for system line-up and testing Full console monitoring and extensive metering with LED bars and illuminated VU
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ML3000 Service Manual
Front Panel Layout
+48V
0 20 40
1
PAD
20dB
O O
1
+6
O O
1
+6
O O
1
POWER
+6
O O
-3
3 10
-3
3 10
GAIN
-6 18
GAIN
-6 18
GAIN
- 10 10 20 50 60 40 100 200 OFF 400Hz
+6
2
O
O O
2
+6
O O
2
+6
O O
2
+6
O O
METERS AUX 5-8 MTX 1-4
+6
ST1
ON
3 10 -6 18 -3 -3
ST3
ON
3 10 -6 18
3
O O
3
+6
O O
3
+6
O O
3
+6
O O
HPF HF
GRP/AUX reverse +6
TRIM
OSC/NOISE
GAIN
GAIN
FOH MONITOR
GRP/AUX reverse
mode
GRP/AUX reverse GRP/AUX reverse
4
O O
4
+6
O O
4
+6
O O
4
min +6
O O
max
ST2
ON
ST4
ON
-15 1k 700
2.5k
+15 4k 6k 15k
+6
L
LEV HM
O O
L
O O
L
O O
L
O O
PINK NOISE 1kHz OSC
LEV
LEV
LEV
+6 +6 +6
O O
500Hz
+6
OSC/NOISE TO TB
+6
O O
+6
O O
+6
O O
+6
R
O O
R
+6
O O
R
+6
O O
R
Disable +6
O O
AFL
-15 80 45 35Hz 1k 180 +15 250 400
AFL
AFL
AFL
+6
C
O O
C
+6
O O
C
+6
O O
C
+6
O O
+6
LM
MAIN MIX MAIN MIX LCR + BLEND = LCR + BLEND = MAIN MIX LCR + BLEND = MAIN MIX
LEV
LEV
LEV
LEV
MIC IN
-15
+15
LF
LCR + BLEND
=
O O
+6
O O
+6
O O
+6
O O
+6
+48V TRIM
ON
ON
ON
ON
TALKBACK
LR -15 +15
=
C
LR
=
C
LR
=
C
LR
=
C
AFL
AFL
AFL
AFL
min max
EQ IN
AUX
PAN
PAN
PAN
PAN
EQ IN
AUX
EQ IN
AUX
PRE
L
R
L
R
L
R
L
R
1
TB TO LR
PRE
PRE
1
1
O O
+6
TB MUTE MUTE
TB MUTE
TB MUTE
TB MUTE
TB MUTE
TB MUTE
TB MUTE
TB
TB TO C
AUX
O O
+6 AUX
O O
+6
AUX
2
2
2
O O
+6
TALK TO TB
AUX
O O
+6 AUX
O O
+6
AUX
3
3
3
AFL
O O
AFL
AFL
AFL
AFL
AFL
AFL
AFL
O O
+6 AUX
+6 AUX
O O
+6
AUX
4
2TRK
O O
4
4
+6
LR
PRE
SOURCE
AUX
O O
+6
O O
+6
AUX
5
LCR C 10 10 10 10 10 10 10 10
PRE
5
AUX
PRE
5
O O
+6
O O
+6 AUX
O O
+6
AUX
6
5
O O
5 0 5 10 20 30
O O
5 0 5 10 20 30
O O
5 0 5 10 20 30
O O
5 0 5 10 20 30
O O
5 0 5 10 20 30
O O
5 0 5 10 20 30
O O
5 0 5 10 20
0
MONO LOCAL
AUX
6
6
+6
0
PRE
MONITOR AUX 0 10
O O
+6
O O
+6
AUX
PRE
7
5 10
O O
7
AUX
PRE
7
7-8 LEV
PHONES
7-8 LEV
O O
7-8 LEV
+6 STEREO
+6
STEREO
O O
+6
STEREO
AUX
8
20 30
O O
AUX 10
8
AUX
8
PAN
O O
+6 = MAIN MIX
30
O O
MIDI RS232 SLAVE mode CH1-16
C MAIN MIX LISTEN WEDGE
PAN
O O
PAN
+6 = MAIN MIX
O O
+6 = MAIN MIX
LCR + BLEND
WEDGE mode
LCR + BLEND
LCR + BLEND
MIDI
LR
=
C
1-2
M A S T E R M A S T E R M A S T E R M A S T E R M A S T E R M A S T E R M A S T E R M A S T E R
LR
=
C
1-2
LR
=
C
1-2
PAN
3-4
L R
BAL
3-4
L R
BAL
3-4
L R
ASSIGN MUTE
GROUP ASSIGN Assign MUTE and VCA groups: Select using GRP MUTE Assign using CH MUTES M U T E M U T E M U T E M U T E M U T E M U T E M U T E M U T E
MUTE
GROUP ASSIGN
MUTE
GROUP ASSIGN
VIEW
DUMP
PFL
Press and Hold with GRP MUTE View on channels
PFL
PFL
PK +6 0 SIG
PK
PK
10
10
10
10
10
10
10
10
10
10
10
+6 0 SIG
10
+6 0 SIG
10
5
5
5
5
5
5
5
5
5
5
5
5
5
0
0
0
0
0
0
0
0
0
0
0
0
0
GROUP ASSIGNED
5
5
5
5
5
5
5
5
5
5
5
GROUP ASSIGNED
5
GROUP ASSIGNED
5
10
10
10
10
10
10
10
10
10
10
10
10
10
20
20
20
20
20
20
20
20
20
20
20
20
20
30
30
30
30
30
30
30
30
30
30
30
30
30
40
40
40
40
40
40
40
40
40
40
40
40
40
O O
O O
O O
O O
O O
O O
O O
O O
O O
O O
O O
O O
O O
ML3000 Service Manual
7
Rear Panel Layouts
Meterpod
Gooseneck lamp connectors.
Console
Audio, expander, intercom, power, MIDI and logic connectors.
R L DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT R L INSERT INSERT INSERT OUT MTX MTX
R L OUT MTX MTX
R L
R L IN
INSERT
INSERT
INSERT
FADER
INSERT
FADER
INSERT
FADER
INSERT
FADER
INSERT
FA
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT R L
R L
CHASSIS OUT IN MIDI RS232
DC POWER IN CONNECTIONS
XLR 2 +IN 1 3 - IN 1 3 - OUT XLR 2 +OUT LINE IN/OUT TIP + RING SEND RETURN INSERT TIP RING
SELECT
Serial No.
Made in the UK by
PUTS
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
DIRECT OUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
SYS-LINK LOGIC MASTER ( from slave ) OUTPUT SLAVE ( to master ) SYS-LINK ( option ) SYS-LINK ( option ) OUTPUT
A
AUDIO OUTPUT ( to master )
B
INPUT
A
AUDIO INPUT ( from slave )
INPUT
B
8
ML3000 Service Manual
Technical Specifications
0dBu = 0.775 Vrms, +4dBu = 1.23 Vrms Operating Levels Channels ......................................... 0dBu Headroom +21dB Mix .................................................. -2dBu Headroom +23dB Max XLR output .............................. +23dBu Frequency Response Referred to 1kHz at +4dBu Mic to main output (+40dB)............. 20Hz to 70kHz +0/-0.5dB Line to main output (0dB)................ 20Hz to 22kHz +0/-0.5dB Distortion @1kHz 0dBu THD+noise ...................................... < 0.01% CMRR Common mode rejection @1kHz Mic (+40dB)..................................... > 85dB Mic + Pad (0dB) .............................. > 50dB Crosstalk Referred to driven channel @1kHz Channel to channel ......................... < -95dB Mute shutoff .................................... < -85dB Fader shutoff................................... < -85dB Noise Performance Measured rms 22Hz to 22kHz unweighted Mic EIN with 150 ohm source ......... -128dB Residual output noise ..................... < -98dBu Mix noise, nothing routed................ < -95dBu Mix noise, 24 channels routed ........ < -88dBu Metering Reading 0................. 0dBu at XLR outputs LED meters .............. Peak reading, 3 colours VU meters ................ Ave reading, Illuminated moving coil Peak indicators ........ 5dB before clip, multi-point sensing Input meters ............. 4 bar LED (signal, 0, +6, peak) Group/Mtx meters .... VU L,R,C meters ............ VU and 16 bar LED Lamp Connectors x3 Connector ....................................... XLR-F 4pin Rating.............................................. 12V 400mA max Channel Filters Slope ............................................... 12dB/oct high pass Frequency ....................................... Off to 400Hz Mono Equaliser HF................. +/-15dB, 12kHz shelf HM................ +/-15dB, 500Hz to 15kHz bell Q=1.9 LM ................ +/-15dB, 35Hz to 1kHz bell Q=1.9 LF ................. +/-15dB, 60Hz shelf Stereo Equaliser HF................. +/-15dB, 12kHz shelf HM................ +/-15dB, 2.5kHz bell Q=1.6 LM ................ +/-15dB, 250Hz bell Q=1.6 LF ................. +/-15dB, 60Hz shelf Power Supply Model RPS11 Case ........................... External 3U rack or floor mount Type ........................... Linear, convection cooled Mains Voltage ............ 100,120,220,230 V.AC selectable Mains Frequency........ 50/60Hz Power consumption.... 300W
Dimensions 24 Channel 32 Channel 40 Channel RPS11 psu RPSD2 Weights
Width.............. Depth ...... .....Height 1141 (45") ...... 640 (25.2") ....252 (9.9") 1396 (55") ...... 640.......... .....252 1651 (65") ...... 640.......... .....252 483 (19") ........ 229 (9") ... .....134 (3U) 483 (19") ........ 180 (7") ... .....45 (1U) 24 Channel..... 34 kg (75 lbs) 32 Channel..... 41 kg (90 lbs) 40 Channel..... 48 kg (106 lbs) RPS11 psu..... 9.5 kg (21 lbs) RPSD2 ........... 6kg (13 lbs)
INPUTS: Mic (Pad out)................ XLR.................balanced, pin2+........ 2k ohm ..............variable -60 to -10dBu ........ Max +11dBu Mic/Line (Pad in) .......... ........................ ................................. >10k ohm..........variable -40 to +10dBu ....... Max +31dBu Stereo ST1-4 ............... TRS jack .........balanced, tip+........... >20k ohm..........variable -18 to +6dBu ......... Max +27dBu 2-Track ......................... TRS jack .........balanced, tip+ .......... >20k ohm..........+4dBu ................................. Max +25dBu Matrix Ext In ................. TRS jack .........balanced, tip+........... >20k ohm..........0dBu ................................... Max +21dBu INSERTS: Input ............................. TRS jack .........unbalanced, tip send, ring return.........0dBu ................................... Max +21dBu Output .......................... TRS jack .........unbalanced, tip send, ring return.........-2dBu.................................. Max +21dBu Matrix ........................... TRS jack .........unbalanced, tip send, ring return.........-2dBu.................................. Max +21dBu OUTPUTS: L,R,C ............................ XLR.................balanced, pin2+........ <75 ohm............0dBu ................................... Max +23dBu Grp 1-4 ......................... XLR.................balanced, pin2+........ <75 ohm............0dBu ................................... Max +23dBu Aux 1-8......................... XLR.................balanced, pin2+........ <75 ohm............0dBu ................................... Max +23dBu Matrix 1-4 ..................... XLR.................balanced, pin2+........ <75 ohm............0dBu ................................... Max +23dBu Direct out...................... TRS jack .........ground comp, tip+ .... <50 ohm............0dBu ................................... Max +21dBu 2-Track ......................... TRS jack .........ground comp, tip+ .... <50 ohm............0dBu ................................... Max +21dBu TB/Osc out ................... TRS jack .........imp balanced, tip+ .... <50 ohm............0dBu ................................... Max +21dBu Local Monitor ............... TRS jack .........imp balanced, tip+ .... <50 ohm............0dBu ................................... Max +21dBu Headphones................. TRS jack .........tip left, ring right........ for stereo headphones >30 ohms
ML3000 Service Manual
9
System Block Diagram
MONO CHANNEL
METER
PEAK
FADER
VCA GROUPS
MUTE
MUTE GROUPS SNAPSHOTS
+48V
GAIN HPF PAD + FILTER FREQ
PFL
PFL
INSERT
EQ IN
VCA PAN LCR+
R LR
BLEND MIX
INPUT 4 BAND EQUALISER
LF LM HM HF PRE-FADE AUX OPTION LINKS POST-MUTE POST-EQ PRE-EQ PRE-INSERT 3-4 L C
L MIX R MIX C MIX
GROUP ASSIGN
1-2 GRP 1 GRP 2 GRP 3 GRP 4
PRE
DIRECT OUT OPTION LINKS
PRE PRE
DIRECT OUT
POST-FADE PRE-FADE POST-TRIM (AUX1 ONLY)
AUX1 AUX2 AUX3 AUX4
AUX5 AUX6
AUX7
AUX8
STEREO
LEV 7-8
PAN
AUX7
AUX 1
AUX 2
AUX 3
AUX 4
AUX 5
AUX 6
STEREO CHANNEL
METER L/M INPUT ST1(3) R + + 4 BAND EQUALISER
LF LM HM HF
FADER
VCA GROUPS
+ ON GAIN
PEAK
MUTE
MUTE GROUPS SNAPSHOTS
AUX8
PFL + MONO EQ IN VCA BAL LCR+
R LR PFL
BLEND
MAIN MIX
L MIX R MIX C MIX
L PRE-FADE AUX OPTION LINKS POST-MUTE POST-EQ PRE-EQ
C
L/M INPUT ST2(4) R
+ ON GAIN + -
+ GROUP ASSIGN
1-2 GRP 1 GRP 2 GRP 3 GRP 4
+
PRE-FADE POST-FADE
L R M L R M
3-4
PRE
PRE AUX9 AUX10
PRE
AUX1 AUX2 AUX3 AUX4
AUX5 AUX6
STEREO
7-8 LEV
PAN
AUX 1
AUX 2
AUX 3
AUX 4
AUX 5
AUX 6
OSC/NOISE/TALKBACK
PINK NOISE TRIM +48V TRIM
AUX7 AUX8
OSC/NOISE TO TB
TB/OSC OUT
DIM
+ TALK TO TB
TB
1kHz OSC
TB MIC
+ -
Disable
MONITOR DIM
10
ML3000 Service Manual
TB ENABLE TB MODE (1-4 ONLY) MIX GRP SL
GRP 1-4 AUX 5-8
FADER MUTE
AFL
AFL
MATRIX
BLEND LCR+ MAIN MIX
L MIX R MIX C MIX
INSERT
TO VU METER
EXT.IN + -
PAN
L Press MODE to reverse GRP and AUX master control sections
R
LR
C
(1-4 ONLY)
GRP 1 GRP TO MTX GRP 2 GRP 3
BAL
GRP OUT
AUX 1-4
MIX AUX SL MASTER
AFL
AFL BAL GRP 4
AUX OUT
L R C
TB L MIX L MIX SL
LEFT
INSERT
FADER
L BAL
LEFT OUT
INSERT
POST-FADE PRE-INSERT TB PRE-INSERT
L
R
2TRK OUT
LEVEL
RIGHT
R MIX R MIX SL
FADER
POST-FADE
R BAL
INSERT
RIGHT OUT
AFL
AFL WEDGE mode
C TB
CENTRE
C MIX SL
FADER
BAL C METER BAL
C MIX
INSERT
CENTRE OUT
ON
OUT
MATRIX
WEDGE MON
MONITOR
AFL MIX AFL PFL MIX SL SL
L METERS L PFL AFL R METERS
SL SL GRP
METERS 1-4
PFL
R
AUX MATRIX
PAFL LOGIC
PFL AFL C
MONITOR SOURCE
METERS 5-8
C METERS
METER SELECT
LR
C
L
+
WEDGE MON
PHONES
L R
R C L 2TRK IN R
HEADPHONES
+
2TRK
TB DIM
MONO
+ + +
LOCAL
L
R
LOCAL MONITOR
ML3000 Service Manual
11
Installation Details
Weights 24 Channel 32 Channel 40 Channel RPS11 psu 34 kg (75 lbs) 41 kg (90 lbs) 48 kg (106 lbs) 9.5 kg (21 lbs)
PHONES SOCKET LAMP SOCKETS 252 110 640
ML3000-24 = 1141 ML3000-32 = 1396 ML3000-40 = 1651
FC 57
134 (3U) 482.6 417
Refer to the power supply user guide for safety and installation instructions. Heed all warnings printed in the user guide and on the power unit. Refer to the RPSD2 user guide for instructions on linking two RPS11 power supplies for redundant supply backup.
229
12
ML3000 Service Manual
Earthing
The connection to earth (ground) in an audio system is important for two reasons: 1.
SAFETY - To protect the operator from high voltage 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 from carrying high voltage which can injure or even kill the operator. It is recommended that the engineer check the continuity of the safety earth from all points in the system including microphone bodies, guitar strings, connector cases, equipment panels and so on. The same earth is also used to shield audio 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 results causing current to flow between the different earth 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:
Use a clean mains outlet for the audio system. Keep the audio equipment mains feed separate from that powering `dirty' equipment such as air conditioning and lighting systems, motors and vending machines. Use star point earthing. It is best to install a `star point' system where the individual earths to the equipment racks and equipment areas are separately run from a solid central reference earth point. Have your mains system checked by a qualified electrician. If the
supply earthing is solid to start with you are less likely to experience problems.
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 on the power supply or connected equipment, or disconnect the cable screens at one end, usually at the destination. Avoid induced interference. To prevent interference pickup keep audio cables
away from mains power units, cables and distribution boards, motors, lighting and computer cables and equipment, and any other heavy duty electrical equipment. Where this cannot be avoided cross the audio and `dirty' equipment cables at right angles to minimise interference.
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 impedance to minimise interference problems. Use balanced connections where possible as these provide further
immunity by cancelling out interference that may be picked up on long cable runs. To connect an unbalanced source to a balanced console input, link the cold input (XLR pin 3 or jack ring) to 0V earth (XLR pin 1 or jack sleeve) at the console. To connect a balanced console output to an unbalanced destination, link the cold output to 0V earth at the console.
Use good quality cables and connectors and check for correct wiring and reliable solder joints. Allow sufficient cable loop to prevent damage through stretching.
ML3000 Service Manual
13
14
A
Audio Connector Types and Wiring
LRGRP 1GRP 2GRP 3GRP 4AUX 1AUX 2AUX 3AUX 4AUX 5AUX 6PFL-
37 36 35 34 33 32 31 30 29 28 27 26 25 24 nc 23 nc 22 nc 21 nc 20
19 0V (CHS) 18 L+ 17 R+ 16 GRP 1+ 15 GRP 2+ 14 GRP 3+ 13 GRP 4+ 12 AUX 1+ 11 AUX 2+ 10 AUX 3+ 9 AUX 4+ 8 AUX 5+ 7 AUX 6+ 6 PFL+ 5 4 nc 3 PFL DC 2 AFL DC 1 0V (PAFL)
B
SYS-LINK II
C- 37 AFL L- 36 35 34 33 32 AUX 7- 31 AUX 8- 30 29 28 27 26 25 24 nc 23 nc 22 nc 21 nc 20
19 0V (CHS) 18 C+ 17 AFL L+ 16 15 14 13 12 AUX 7+ 11 AUX 8+ 10 9 8 nc 7 nc 6 nc 5 nc 4 nc 3 nc 2 nc 1 nc
ML3000 Service Manual
Gain Structure
How the levels between the different signal stages are set up is referred to as the gain structure. For best performance it is important that the connected source signals are matched to the `normal operating level' of the console. Similarly the levels of the connected amplifiers and destination equipment should be correctly matched to the console outputs. If set too high then the signal peaks will be clipped resulting in distortion, and if set too low then the signal-to-noise performance will be degraded resulting in excessive background hiss and noise. Matching the Console to Destination Equipment. The console produces a standard XLR output level of 0dBu for a meter reading of `0'. It can produce a maximum of +23dBu and is therefore well suited to driving equipment operating at nominal 0dBu or +4dBu while providing plenty of headroom. If you are connecting directly to a sensitive power amplifier it is advisable to turn down its input trim control if the normal console level is too high. Simply turning down the console output faders degrades the output stage noise performance and reduces the resolution of the fader movement. The output faders are best operated around `-10' to `0' for loudest average volume required. This allows plenty of additional headroom if you need it. Terminology. The normal operating level is the optimum signal level for best console performance, indicated by `0' meter readings and resulting in the 0dBu output level. The channels operate at 0dBu and the mix stages at 2dBu for extended headroom. Headroom is the extra level available above normal to allow for loud peaks before the signal becomes clipped resulting in audible distortion. The signal-to-noise ratio (SNR) is the difference measured in dB between normal level and residual noise floor (hiss) produced by the console electronics. The dynamic range is the sum of headroom and SNR representing the maximum signal range possible from quietest to loudest. Using the VCA Groups. Assigning a channel to one or more VCA groups lets those group faders control the level of its VCA element. Each fader provides up to +10dB boost. Note that the channel VCA allows a maximum combined fader boost of +10dB. Any more is simply ignored. It is best to operate the VCA group faders around their nominal `0' position. You can also use a VCA group to reduce the overall level of a hot mix without having to adjust all the channel faders. Final word... A little care with setting gain structure throughout the signal chain will give you the very best performance and most manageable control of the mix.
VU VCA GROUPS OUTPUT
Using the Meters. The ML3000 provides metering of inputs and outputs. For best results operate the console with the LED bar meters averaging around `0' allowing the loudest moments to reach `+6'. Reduce the gain if the red peak LEDs start to flash. Note that the peak leds light 5dB before actual clipping to warn that you are nearing distortion and should reduce gain. The LED bar meters have a peak response with fast attack and slow release so that fast musical transients are accurately displayed. The VU meters have a slower attack so that the average levels are better displayed. Both types of metering are useful in live sound mixing. Matching a Source to the Console. Start by turning down the channel fader and send levels to prevent unexpected loud volumes reaching the main speakers and monitors. Adjust the GAIN control for an average `0' reading on the channel meter. Press PFL to listen to the signal using headphones, local or wedge monitor, and to view its level on the main LED and VU meters. Once the gain is correctly set you can raise the levels to bring the channel into the mix. Note that you may need to adjust the gain if you make significant changes to the EQ. Make sure that any equipment inserted into the channel is set to operate around 0dBu line level. It is best to first set the gain with inserted signal processors such as compressors switched to bypass.
CHANNEL
FADER
CHANNEL
+30 +20 +10 0dBu -10 -20 -30 -40 -50 -60 +60/-10 dB 0dBu +/-15dB 0dBu
L R LR C
MIX
MIX HEADROOM CLIPPING LEVEL OUTPUT
MIX
EQUALISER INPUT GAIN INSERT VCA DIR OUT PAN/BLEND INSERT
+23dB FADER
+23dBu HEADROOM +23dB 0dBu SNR signal-to-noise -90dB
-3dB law
-2dBu
DYNAMIC RANGE 113dB
-90
NOISE FLOOR
-90dBu
ML3000 Service Manual
15
MIDI / RS232
MIDI Overview
The ML3000 includes a Musical Instrument Digital Interface (MIDI) port. Standard 5-pin IN and OUT sockets allow connection to external MIDI equipment such as computer show control systems, sequencers, instruments and data archiving devices. Applications include sophisticated `handsoff' scene control, effects and instrument patch control, switching of signal processing remote controllers, and archiving of the console settings and memories for later re-use. What the console MIDI can do : Turn channel mutes on and off Store and recall snapshot memories Snapshot program change messages Archive console settings and memories
OUT IN MIDI RS232
MIDI RS232 SLAVE mode CH1-16
MIDI
ASSIGN
Assign MUTE and VCA groups: Select using GRP MUTE Assign using CH MUTES
VIEW
DUMP
Press and Hold with GRP MUTE View on channels
What the console MIDI cannot do : Turn Mute Groups on and off Turn VCA group mutes on and off
SELECT
Assign channels to VCA groups
The MIDI Cables
Use standard 5-pin 180 degree DIN type male-tomale MIDI cables. These should be available from your local audio dealer or music shop. The cables should not exceed 15 meters (50 feet) in length. To control external equipment plug console MIDI OUT to external equipment MIDI IN. To control the console plug external equipment MIDI OUT or THRU to console MIDI in. Make sure the same MIDI channel number is selected on the console and external equipment you want the console to communicate with.
Control VCA fader levels The capabilities of the console automation system are subject to continual development and new features may be added in time. The latest operating software is available on the Allen & Heath Internet site together with loading instructions.
Selecting MIDI Operation
For MIDI operation make sure the rear panel switch is set to the MIDI position. The RS232 setting is only used when updating the console operating software to a new version, or with the Allen & Heath ML3 Archiver utility for the PC.
RS232
Set the rear panel switch to RS232 if you need to load in new console operating software or interface to a PC via its serial port. The Allen & Heath ML Archiver software provides archiver and snapshot manager functions that run on a PC. Note: The console takes longer to boot after power up when the rear switch is set to RS232. This is because it interrogates the port for a code update. For normal operation the MIDI position is recommended.
Changing the MIDI Channel Number
Hold down the master section MIDI CH key. The current MIDI channel number is displayed on one of the CH1 to 16 GROUP ASSIGNED LEDs next to the faders. The LED flashes to attract your attention. Simply press one of the CH1 to 16 MUTE keys while holding down MIDI CH to change the MIDI channel number. The channel mute is not affected during this operation.
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ML3000 Service Manual
HEX 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51
MUTE CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CH 8 CH 9 CH 10 CH 11 CH 12 CH 13 CH 14 CH 15 CH 16 CH 17 CH 18 CH 19 CH 20 CH 21 CH 22 CH 23 CH 24 CH 25 CH 26 CH 27 CH 28 CH 29 CH 30 CH 31 CH 32 CH 33 CH 34 CH 35 CH 36 CH 37 CH 38 CH 39 CH 40 CH 41 CH 42 CH 43 CH 44 CH 45 CH 46 CH 47 CH 48 STEREO 1 STEREO 2
Channel Mutes
Pressing any input or output channel MUTE switch transmits a MIDI Note On message. Similarly, receiving a MIDI Note On message will turn the associated channel mute on or off. Console mutes are mapped to MIDI Note numbers as shown in the table. Running status is supported on receive and transmit. Transmit. Pressing a channel MUTE switch transmits the following Note On messages: 9n cc vv 9n cc 00 Where n = console MIDI channel number cc = input or output channel number vv = 3FH for mute off, 7FH for mute on
Receive. The console responds to the following MIDI Note On message: 9n cc vv (00 is ignored) Where vv < 40H = mute off, 40H <= vv <= 7FH = mute on
Snapshot Memories
Recalling a snapshot will transmit a MIDI Program Change message. Receiving a Program Change message will recall a snapshot. Snapshot numbers 1 to 128 are mapped to MIDI Program Change numbers 0 to 127. Running status is supported on receive and transmit. Transmit and Receive. The message format is: Cn pp Where n = console MIDI channel number pp = console snapshot number 00H to 7FH
ML3000 Service Manual
17
Archiving the Console Settings
The console settings can be saved to an external device such as a MIDI sequencer or data archiver using the dump out facility. Settings can be loaded back into the console using dump in. This is ideal when you want to archive the settings to use at a later date, for example a re-run of a previous performance. You can also use the dump facility to program additional ML3000 consoles, for example when setting up duplicate shows or swapping consoles around. Simply link MIDI OUT from one to MIDI IN of the other and action the dump out facility. Settings which are archived : Current mute settings Current Mute group assignments Current VCA group assignments All snapshot memories Settings which are not archived : Current console operating mode
MIDI Dump Message Format
The format for dump out and in is identical. The dump data string is made up of multiple System Exclusive messages (known as packets) which contain the console information. Transmit and Receive. packet is as follows: The format for a single type>
F0 F7
= 00 00 1A 50 07 VV vv nn Where VV = software version number major vv = software version number minor nn = console MIDI channel number
= packet number from 0 to 127 = block of console data (7-bit format) = checksum to allow error detection
MIDI Dump Errors
If the console or connected equipment fails to respond to a MIDI dump then check: · · · · The MIDI cable is good and correctly plugged The correct MIDI channel number is selected The console rear panel switch is set to MIDI Try again
MIDI Dump Out
Connect the console to a suitable MIDI archiving device. Set the same MIDI channel number on both. Check the rear switch is set to MIDI. Press the MIDI and VIEW keys together. The console dumps the current settings and memory contents using a SysEx message string. During this time the MIDI LED lights to show that data is being sent via the MIDI port. Note that this operation can take up to 10 seconds during which time the console mutes and assignment operations are interrupted.
Allen & Heath ML Archiver
The ML Archiver WindowsTM utility for the PC can be downloaded from the Allen & Heath Internet site. This can be used to archive data to and from the PC via MIDI or RS232. The program also includes the useful Snapshot Manager which lets you store and recall the console mute settings and VCA group assignments from the 128 internal snapshot memories. The snapshots cannot be accessed from the console control panel itself. The archiver provides this extra feature. Check the Allen & Heath Web site for further details and loading instructions.
MIDI Dump In
Connect the console to the MIDI archiving device. Set the same MIDI channel number on both. Check the rear switch is set to MIDI. Start the process using the MIDI archiver. The console current settings and memory contents are overwritten. During this time the MIDI LED lights to show that data is being received by the console. Note that this operation can take a while during which time the console mute and assignment operations are interrupted. If you are using a MIDI sequencer to record the dump out data string then make sure you play it back at the same speed you recorded it. If you dump it back into the console faster than it was recorded some data may not load correctly.
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ML3000 Service Manual
Console Computer and Operating Software
Operating Software Version Number
You can check the current version number of the ML3000 software running on the console using a PC connected via RS232. Instructions for this are provided on the Allen & Heath Internet site.
Power Up and Power Down
The console settings are remembered when power is removed. On power up these settings are restored.
Loading New Operating Software
Check the Allen & Heath Web site for the latest version of console software. New software is loaded from a PC via the RS232 port. IMPORTANT ! The current console settings and snapshots may be lost when you load new operating software. If you wish to keep your settings and snapshot contents, first archive them using the dump out facility. Restore these after loading the new software by using dump in. Download the software from the Allen & Heath Web site to your PC computer. Connect the PC RS232 port to the console RS232 port using a standard pin-to-pin (not null modem) 9-pin serial cable. Set the console rear panel switch to the RS232 position. Power up the console. The console awaits data from the PC. Follow the instructions provided on the Web site for loading the new software into the console. When completed make sure you set the console rear panel switch back to its normal operating position, typically MIDI.
To Reset the Console Settings
Hold down the ASSIGN and VIEW keys together while powering up the console to reset all current settings. This does not affect the contents of the snapshot memories. The default settings are restored: · · · Selects normal console operating mode Clears all current Mute Group assignments Clears all current VCA Group assignments
To Reset the Snapshot Memories
Hold down the ASSIGN and MIDI keys together while powering up the console to clear all the snapshot memories. This does not affect the current console settings. For all snapshots reset: · · Clears all stored mutes Clears all stored VCA Group assignments
To reset all Settings and Memories
Hold down the ASSIGN, VIEW and MIDI keys together while powering up the console to clear all current settings and the memories.
MIDI RS232 SLAVE mode CH1-16
MIDI
ASSIGN
Assign MUTE and VCA groups: Select using GRP MUTE Assign using CH MUTES
VIEW
DUMP
Press and Hold with GRP MUTE View on channels
ML3000 Service Manual
19
Internal Options Links
The ML3000 is designed to offer the utmost flexibility to satisfy the application without modification. However, the following internal link options are provided to allow customisation to satisfy the more specialist applications or personal preferences. Remember to set these internal links according to the user requirement if replacing assemblies while carrying out service work:
Mono channel AUX options The pre-fade sends are set pre-insert, pre-EQ, post-mute as standard. Jumper links on the mono circuit cards can be replugged to configure post-insert, pre or post-EQ and/or pre-mute. Refer to drawing D1 and D2. Stereo channel AUX options The pre-fade sends are set pre-EQ, post-mute as standard. Jumper links on the stereo circuit cards can be replugged to configure postEQ and/or pre-mute. Refer to drawing D4 and D6. Mono channel DIRECT outputs These are derived post channel fader as standard. A jumper link on each card can be replugged to configure pre-fader or post-fade with level trim. The direct out pre-fade source is the same as that configured to feed the aux sends. The level trim option disables the channel Aux1 send and uses its send as the direct out level control. Two links need to be set in this case, one to send the direct output signal through the send control, the other to disable the Aux1 send from the channel. Refer to drawing D1. 2-track output source These are set post master insert and fader as standard. Two pairs of jumper links can be replugged to derive the output pre-insert, pre-fader. Refer to drawing D27 and D28.
Internal Assembly Assignments
The following assignment links need to be set according to assembly position in the console. These should not need changing unless a replacement assembly has been fitted.
Group / Aux buss assignment Zero ohm links determine which busses feed the group and aux mix amps. Refer to drawings D11, D12 and D13. Aux Matrix buss assignment Zero ohm links determine which busses feed the aux mix amps. Refer to drawing D14 and D15. VU meters 1-8 The same assembly type is used for meters 1-4 and 5-8. The position in the console is determined by soldered links. Refer to drawings D48, D49 and D50. CPU assignment drawing D23 Position the three links according to the console type as shown on
20
ML3000 Service Manual
The Range
ML3000-24 ML3000-32 ML3000-40 ML3000-SLV2 24 mono, 2 stereo input - Live sound console 32 mono, 2 stereo input - Live sound console 40 mono, 2 stereo input - Live sound console SYS-LINK V2 kit - ML3000
RPS11 002-223 RPSD2
3U power supply unit - For ML3000 console 2.9 metre DC power lead To connect RPS11 power supply to console Dual supply Combiner / Monitor
002-617 AL4155
2.8 metre 37way Audio cable - To link sidecar to console 2.8 meter 9way Logic cable - To link sidecar to console
AP4512 AP4511 AP2725 AP2263 AL4061
ML3000 Console User Guide ML3000 Console Service Manual RPS11 Power Supply User Guide RPSD2 User / Installation guide Gooseneck lamp 18"
AP4508 AP4509 AP4510
24 Channel vinyl dustcover 32 Channel vinyl dustcover 40 Channel vinyl dustcover
SERVICE TOOLS
The tools required to service the ML3000 are standard to an electronics service workshop and are easily obtainable. The following items are necessary for disassembly and service access: TOOL 4mm Hexagon (Allen) key 1-point Crosshead screwdriver 2-point Crosshead screwdriver 11mm AF Nutdriver 12mm Nutdriver 1.27mm Hexagon (Allen) key 2.5MM hexagon (Allen) key 5.5mm AF Spanner 5mm Nutspinner Torx-headed screwdrivers M6 side trim M3, 4AB M4, 6AB, 8B Potentiometer and headphone socket nuts Jack nuts PSU DC Leads M4 Sidetrim Fader PCB M3 Hex D-Type Screws Torx-headed screws AT4142 USE ORDER CODE AT0033 AT0004 AT0002
ML3000 Service Manual
21
ORDERING AN ASSEMBLY
The following assemblies for the ML3000 are supplied fully tested. Please quote the description and order code for the part required.
Printed circuit board (PCB) assemblies:
DESCRIPTION Mono Input PCB assembly Stereo Input PCB assembly Master Connector PCB assembly Group / Aux PCB assembly Aux Matrix PCB assembly Master Distribution PCB assembly SYS-LINK 2 In PCB assembly MIDI Power PCB assembly CPU PCB assembly LCR PCB assembly Master / Stereo Fader PCB assembly Master PCB assembly Mono Fader PCB assembly Mono Connector PCB assembly SYS-LINK 2 Out PCB assembly Meter Master PCB assembly Meter 1-8 & 9-16 V2 PCB assembly Meter LEDBAR PCB assembly ORDER CODE 002-742 002-746 002-750 002-743 002-744 002-778 002-634 002-753 002-550 002-752 002-748 002-745 002-747 002-749 002-636 002-755 002-716 002-754
IDC connector harnesses:
DESCRIPTION GL4000-Master harness 10 way Master to rear harness 16 way LRC to rear harness 10 way LRC Fader harness 26 way Mono Fader harness 34 way MPC to Master Fader harness 10 way Master to Master Fader harness 26 way CPU to PSU (Power) harness 10 way CPU to PSU (MIDI) harness ML3-40 26 way Main harness ML3-24 26 way Main harness ML3-32 26 way Main harness 10 way Dist. to rear Connector harness 16 way Master Interconnect harness ORDER CODE AL2759 AL4605 AL4606 AL4607 AL4608 AL4609 AL4610 AL4611 AL4612 AL4613 AL4617 AL4618 AL4624 AL4625
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ML3000 Service Manual
20 way Stereo Fader harness 20 way Dist. to Meter harness 10 way Meter Power harness
AL4626 AL4657 AL4664
THE CHASSIS TRIM
DESCRIPTION ML3000 (all formats) Left & Right Chassis side trims Left & Right Moulded side trims Ident strip Master Ident strip Master Rear Ident strip ML5 1-24 Ident strip ML5 1-24 Rear Ident strip ML5 25-48 Ident strip ML5 25-48 Rear ORDER CODE AA4432-L/R AA4433-L/R AK4439 AK4440 AK3789 AK3790 AK3795 AK3796
ML3000 Service Manual
23
ORDERING AN ML3000 SPARES KIT
It is recommended that the spares kit order code 002-781 is held and maintained by the service agent to enable in-field service repairs to the ML3000 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 are listed below and are supplied in a cabinet of drawers. Individual spare parts may be ordered. Please quote the description and order code for the part required.
Fixings:
DESCRIPTION INSUL WASHER TO220 3X1.5MM SCREW 4ABX5/16 CSK TORX BK SCREW M3X6MM PAN TORX BK SCREW M3X8 PAN TORX BK SCREW M3X16 PAN TORX BK SCREW M4X25 PAN TORX ZNC SCREW M3X10 CSK POZI BK NUT M3 NYLOCK NUT M4 FULL NUT M4 NYLOCK SCREW M3X4 PAN TORX BLK SCREW 4ABX1/2" PAN TORX BK JOINT BLOCK 30% GLASS FILLED WASHER M5 SHAKEPROOF SCREW M6X20 CSK TORX BK SCREW 6BX3/8 CSK TORX ZNC SCREW 6BX1/4 TRUNC POZI ZINC SCREW 8BX3/8 CSK POZI BK SCREW M4X8 CSK TORX BK SCREW 6BX5/16 PAN TORX BK SCREW 4X5/16 PAN POLY TORX BK SCREW M2X4 CSK POZI BK SCREW M3X4 PAN TORX BLK SCREW M6X12 CSK TORX ZINC WASHER M4.5X25MM ZINC SCREW M4X20 CSK TORX BK NUT POT 9MM FEET SCREW FIXING 18DIA 17.5MM ORDER CODE AA3247 AB0059 AB0072 AB0073 AB0079 AB0082 AB0093 AB0102 AB0105 AB0188 AB0233 AB0250 AB0253 AB0304 AB0310 AB2082 AB2083 AB2085 AB2777 AB2809 AB2810 AB3329 AB3852 AB4036 AB4707 AB4717 AB8050 AK4415 QTY 5 20 10 10 5 5 5 10 5 5 20 5 10 5 5 5 5 5 5 20 50 10 25 5 5 5 75 6
Knobs and caps:
DESCRIPTION KNOB 11MM GREY-RED KNOB 11MM GREY-BLUE KNOB 11MM GREY-LIGHT BLUE ORDER CODE AJ2074 AJ2075 AJ2076 QTY 10 30 30
ML3000 Service Manual
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KNOB 11MM GREY-GREEN KNOB 11MM GREY-GREY KNOB 11MM GREY-YELLOW KNOB 11MM GREY-BROWN PUSH BTN RECT GREY CK 10X5 PUSH BTN RECT BLACK CK 10X5MM PUSH BTN 5MM SQ RED FADER KNOB 11MM BK-WH TBAR SWITCH CAP OFFSET LT BL/GY TOP SWITCH CAP OFFSET LT BL/WH TOP PUSH BTN SQ WHITE 6X6MM 23/PB0 PUSH BTN SQ L/GREY 6X6MM 23/PB PUSH BTN SQ BLACK 6X6MM 23/PB0 PUSH BTN L/GREY ROUND 8MM FADER KNOB 11MM WH-BK T FADER KNOB 11MM RED-BK T FADER KNOB 11MM YEL-BK T FADER KNOB 11MM BL-BK T BTN ILLUM WHITE LARGE
AJ2077 AJ2078 AJ2079 AJ2080 AJ2865 AJ3228 AJ3488 AJ3503 AJ3863 AJ3950 AJ3951 AJ3952 AJ3954 AJ3955 AJ8078 AJ8079 AJ8080 AJ8081 AJ8107
15 20 15 15 5 5 20 10 20 10 10 5 5 10 5 5 5 5 10
Faders, Potentiometers, Switches and connectors:
DESCRIPTION FLEX CABLE 12WAY 90MM FLEX CABLE 15WAY 90MM POT ALPS 14MM 10KCX2 (103C) FADER ALPS 100MM 10KLIN SLIM FADER ALPS 60MM 10KA DUST POT ALPS 11MM 10K SPCL (103) POT ALPS 11MM 20KK (203K) POT ALPS 11MM 20KB C/D (203B) POT ALPS 11MM 200KCX2 (204C) POT ALPS 14MM 20KBX2 ST C/D POT ALPS 14MM 20KKX2 ST (203K) POT ALPS 14MM 10K ST C/D 103AC POT ALPS 14MM 200KCX2 (204C) POT ALPS 11MM 5K RD REV 502RD FADER ALPS 100MM 10KD(T) DUST SWITCH 2PCO LATCH SINGLE JACK SKT STEREO SW PCB CHROME JACK SKT 1/4" ST PCB MET JACK NUT NKL PTD BRASS RING
ML3000 Service Manual
ORDER CODE AH2228 AH4091 AI0150 AI3313 AI3497 AI3838 AI8003 AI8004 AI8005 AI8006 AI8007 AI8008 AI8009 AI8111 AI8117 AL0162 AL0328 AL4713 AL4715
QTY 10 5 5 10 5 10 20 15 10 10 5 10 10 5 5 30 2 2 2
25
SWITCH 4PCO LATCH JUMPER SOCKET 2WAY SWITCH ALPS 2PCO MOM FLEX SKT 12WAY 90DEG FLEX SKT 12WAY STRT XLR FEM 3PIN VERT PCB XLR MALE 3PIN VERT PCB SWITCH SLIDE MINI SPDT PCB JACK SKT 1/4" ST V MET UNSW JACK SKT 1/4" ST V MET CRIMP TERMINAL RING 4BA INSUL MOLEX 0.1" MALE 10X2PIN STRT MOLEX 0.1" MALE 5X2PIN 90DEG BOX HEADER 0.1" 26WAY 90DEG FLEX SKT 15WAY 90DEG MOLEX 0.1" MALE 5WAY 90DEG LCK TERMINAL SCREW PCB MOUNT MOLEX 0.1" FEM 5X2PIN STRT MOLEX 0.1" MALE 5WAY STRT LCK WFM ASSY ML3 FADER SWITCH ALPS 2PCO LATCH 90DEG
AL0333 AL0334 AL0374 AL2226 AL2227 AL2410 AL2411 AL3081 AL3407 AL3410 AL3449 AL3451 AL3512 AL3592 AL4076 AL4270 AL4303 AL4306 AL4594 AL4619 AL8065
10 15 10 5 5 5 5 2 5 10 5 5 5 5 5 5 5 5 5 10 5
LEDs and Semiconductors:
DESCRIPTION DIODE 1N4148 SIGNAL TRANSISTOR BC549 NPN TRANSISTOR BC214C PNP IC TL072 OP-AMP IC LM339N COMPARATOR TRANSISTOR J111N FET T092B LED T1 3MM YELLOW LED T1 3MM GREEN LED T1 3MM RED IC CMOS 4053B - CD4053BCN IC CMOS 4051B - CD4051BCN IC NE5532N OP-AMP IC 6N136 OPTO-ISOLATOR IC REGULATOR 7805 IC CMOS 74HC165 IC CMOS 74HC4094N IC LM393N COMPARATOR ORDER CODE AE0007 AE0020 AE0031 AE0046 AE0071 AE0083 AE0084 AE0085 AE0086 AE0117 AE0118 AE0221 AE0222 AE0308 AE2749 AE2755 AE2818 QTY 25 10 2 25 5 10 10 10 10 1 2 20 1 1 1 2 5
ML3000 Service Manual
26
TRANSISTOR BC556B PNP CRYSTAL 14MHZ TRANSISTOR SMD BC858B IC DS1233-5 TO92 POWER RESET TRANSISTOR MOSFET BSS138 IC CMOS 74HCT02 IC THAT2155 VCA TRANSISTOR 2SB737 PNP
AE3001 AE3007 AE3042 AE3066 AE3498 AE3988 AE4279 AE8069
1 1 2 1 1 1 10 10
Miscellaneous:
DESCRIPTION METER VU NISSEI +8V BULB NEW BEAD FERRITE AXIAL CABLE TIE 2.6X90MM INDUCTOR 4.7UH 600MA BATTERY NI-MH 2.4V 150MAH ORDER CODE AD4322 AF0610 AK0151 AM3467 AP4355 QTY 3 5 5 2 2
Power Supply:
DESCRIPTION LAMP MAINS NEON 12 DIAM FUSE 20MM 3.15A A/SURGE (UK, EC) FUSE 20MM 5A A/SURGE (USA) FUSE 20MM 8A A/SURGE (DC) TRANSFMR RPS11 320VA BRIDGE RECTIFIER 35A 600V TRANSISTOR MJ11016 TRANSISTOR COVER T03 THYRISTOR TIC126M 12A IC REGULATOR 783 IC REGULATOR UA723CN FUSE HOLDER 20MM PANEL 10A DC CABLE ASSY (10 PIN PLUG 10 PIN SOCKET) ORDER CODE AL0200 AL0464 AL2270 AL0487 AM2720 AE0239 AE0240 AK2767 AE0272 AE0214 AE0056 AL4219 002-223 QTY 2 5 5 5 1 2 2 1 2 2 1 -
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ALLEN&HEATH
ML3000 SYS-LINK
Fitting Instructions for ML3000-SLV2 Kit
AP4721 issue 1
These are the instructions for fitting the SYS-LINK Version 2 console expander option kit to the ML3000 console. This work must be carried out by technically qualified service personnel only. Whilst we believe this information 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. For information on how to use the SYS-LINK option please refer to the Applications Note AP4722. For further information on the ML3000 console refer to User Guide AP4512 and Service Manual AP4511.
Contents.
Check the contents of your ML3000-SLV2 kit:
1 x 002-634
PCB Assembly ML3 SYS-LINK II IN
1 x 002-636 3 x AK0151
PCB Assembly ML3 SYS-LINK II OUT Cable Tie 2.6 x 90mm
2 x AH4131
37way D-type Audio Cable ML5 SYS-LK
1 x AL4155
9way D-type RS422 Cable ML5-SC
1 x AL4684 1 x AL4685 1 x AL4686 1 x AP4721 1 x AP4722
IDC Harness ML3 10way SYS-LINK Power IDC Harness ML3 20way SYS-LINK OUT IDC Harness ML3 26way SYS-LINK IN Fitting Instructions (This document) Applications Note
AP4721 ML3000-SLV2 Fitting Notes
1
Software Compatibility
The ML3000 must be loaded with V1.31 or higher operating software for the SYS-LINK option to function correctly. You can check the current version number of the console software using a PC connected via RS232. Instructions for this and the latest version of software are provided on the Allen & Heath Internet site http://www.allen-heath.com/
Tools and Facilities Required
This work requires removal of the console base panel, fitting two internal circuit card assemblies and plugging on IDC cable harnesses. To use SYS-LINK the option must be installed into both consoles to be connected. Provide a suitably large, well lit area such as in a service workshop. To avoid damage to the cosmetics of the console ensure that the work surface is clean and clear of obstructions. Allow enough time to carry out the installation and check the results. Allen & Heath do not assume responsibility for damage due to incorrect installation of this option or it being carried out by unqualified personnel. Normal workshop tools are required. Depending on the age of the console these include either size 1 and 2 Pozidriv (cross head) or size T10 and T15 Torx (star head) screwdrivers. A 5mm nut spinner or spanner is also needed.
Fitting Instructions.
Note that these diagrams show the 24 channel ML3000. The same procedure applies to all models. Step 1: Before installation, remove console power and disconnect all cables and attachments. Ensure adequate lighting and use the correct tools. Step 2: Invert the console and remove the screws securing the base. Carefully lift the base off, retaining all screws. Step 3: Remove the three blanking plates (10 screws) located inside the rear connector panels - Fig.1. The two circuit cards are to be fitted here.
Fig.1
AP4721 ML3000-SLV2 Fitting Notes
2
Step 4: Fit the two IDC harnesses to the SYSLINK OUT card. 10way AL4684 to CN4 and 20way AL4685 to CN5 Fig.2. Note that these may have already been supplied fitted.
AL4684
AL4685
CN4
Fig.2
CN5
Step 5: Fit the SYS-LINK OUT card into the console using the 8 D-type fixing nuts (supplied fitted to the assembly). Use a 5mm nut spinner Fig.3. Fig.3
INPUTS FADER DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT
INSERT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
INSERT INPUT
SYS-LINK LOGIC MASTER ( from slave ) OUTPUT SLAVE ( to master ) SYS-LINK ( option )
A
AUDIO OUTPUT ( to master )
OUTPUT
B
Fig.4 Step 6: Fit the free end of 10way AL4684 harness to CN2 on the Midi-Power circuit card Fig.4 (see Fig.5 for power card location).
Rear Extrusion Heatsink
AL4684
Step 7: Secure the 10way harness AL4684 along the main earth copper strip using 3 cable ties (AK0151) Fig. 5
CN2
Step 8: Fit the free end of 20way harness AL4685 to CN10 on the master distribution PCB assembly Fig. 5.
Fig.5
Midipower PCB
CN2
Master distribution PCB
CN4
CN5
AL4685
CN3
CN10
AP4721 ML3000-SLV2 Fitting Notes
3
Step 9: Fit the 26way harness AL4686 to the SYS-LINK IN card CN3 Fig.6
Fig.6
Step 10: Fit the SYS-LINK IN card into the console using the 4 D-type fixing nuts (supplied fitted to the assembly). Use a 5mm nut spinner Fig.7 CN3
AL4686
DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT DIRECT OUT
INSERT IN
INSERT IN
INSERT IN
INSERT IN
INSERT IN
INSERT IN
INSERT IN
INSERT IN
INPUT
A
AUDIO LINK INPUT
INPUT
B
Fig.8
Step 11: Fit the free end of 26way harness AL4686 to the male connector socket on the main console IDC buss harness Fig.8 and Fig.9 Step 12: Check that all harnesses are securely aligned and fitted. Check your work and remove any dirt or debris from within the console. Re-fit the base panel.
CN3
AL4686
Step 13: Connect power and test the SYS-LINK system for correct operation. Refer any queries to Allen & Heath technical support.
AP4721 ML3000-SLV2 Fitting Notes
4
Technical Drawings
The following section includes the full set of technical drawings associated with the ML3000. The BLOCK DIAGRAM is the same as printed in the User Guide and illustrates the signal flow through the console. The MAP DRAWINGS show the interconnection between the various circuit assemblies. The PCB and CIRCUIT drawings show the details for each assembly. Option and assignment links are marked where appropriate. The drawings included are listed in the contents at the start of this manual. If you have any queries or require further information please contact Allen & Heath.
28
ML3000 Service Manual
+VC R1 47K C1 47/63 +48V 1 3 4 6 SW1A SUJ 2P 2 5 SW1B SUJ 2P R27 8K2 1% 3 MICR5 6K8 C3 1 47/63 R14 47K C5 330P 4 5 8 7 6 5 4 3 2 1 90 DEG FFC R51 0R0 VR3A 20KB R56 2K7 C36 2 C10 47/25 R21 47K +VA R54 68K 1 C28 1N/MYL R55 6K8 2 1 3 U2A TL072 C46 VR6A 22N/MYL 200KC X2 R10 6K8 1 5 U2B TL072 C52 VR4A 200KC X2 3 2 1N5/MYL R12 6K8 PEAK_2 JP1 1 3 VR5A 20KB PRE_EQ 2 1 PREFADE_1 3 U4A TL072 100/25 PEAK_3 2 1 POSTFADE_1 3 U3A TL072 100/25 R25 47K POST_EQ_SW LG VR1B VR2C 10K Z LAW 2X200KC BRKT BRKT 5 6 8 VR3B 20KB BRKT VR4B 200KC X2 BRKT 6 VR5B 20KB BRKT VR6B 200KC X2 BRKT 6 VR7B 20KB BRKT VR8B 20KB BRKT C49 POSTFADE_2 R26 47K INSEND 1 C48 PREFADE_2 JUMP 2 STRT JP3 2 JUMP 2 STRT -VC MUTE_FET 1 2 C33 100N 1N4148 R99 180K 2 1 3 U5A TL072 D4 1N4148 R43 4K7 C42 330N 50V/PE METER 1 2 JUMP 2 STRT JP2 2 C17 47/25 R73 5K6 R13 6K8 Q5 J111N R74 5K6 Q6 J111N C18 47/25 6 5 U4B TL072 R97 150K R98 680K D3 R79 10K 7 PREFADE_1 R78 10K R22 2 22P R59 27K R60 1K8 C37 22P 6 7 47/25 C12 6 R24 47K R63 18K C41 330N 50V/PE VR8A 20KB R57 2K7 INSRET INSEND DIRDIR+ 47/63 R28 8K2 1% 6 SW2B SUN 2P 6 SW3B SUN 2P 4 5 47/25 -VC C11 47/25 R61 1K2 1% R62 1K2 1% C35 100P R36 4K7 1% D2 1N4148 6 7 5 U1B NE5532 R20 3K3 NF 150N 63V/PE 150N 63V/PE R42 3K3 3 2 VR2B 2X200KC SW2A SUN 2P 2 1 SW3A SUN 2P 47/25 R16 47K R29 2K2 1% R17 47K C27 1N/MYL R19 47K C7 330P R18 47K 3 2 Q1 C6 2SB737 330P -VC Q3 BC549 Q4 BC549 R32 820R 1% R35 4K7 1% R3 0R0 2 C43 C44 3 47/25 C34 100P 1 PEAK_1 VR2A 2X200KC R39 22K R7 6K8 U1A NE5532 1 C16 R50 22R R41 3K3 C14 100P/DISK -VA 4 C8 -VC C64 R38 10R R37 10R NF C29 3 1000/6.3 VR1A 10K Z LAW Q2 2SB737 1 C30 100N 100N/MYL 2 +VC U1C NE5532 U2C TL072 U3C TL072 U4C TL072 U5C TL072 8 8 8 8 8 +VA
R33 4K7 1% D1 1N4148
R34 4K7 1%
V- V+
V- V+
V- V+
V- V+
V- V+
C31 100N
C32 100N
4
4
4
4
e
R2 1K0 CN1 12 11 10 9 MICMIC+ C2 100N 63V MIC+
6
R31 820R 1%
4
INSEND
R6 6K8 C4
R15 47K
C9
5
d
3
1
3
1
R23 47K PRE_EQ
-VC POSTFADE_1 +VA CV 3 7 C38 22P R64 18K U3B Ec+ 8 U6A THAT 2155 2 R72 5K6 R120 47K -VA 47/25 C40 22P JUMP 2 STRT R75 47R R77 330K 1 -VA +VA 3 6 7 5 JUMP 2 STRT TL072 PR1 PRESET 22K JP7 1 PREFADE_1 JUMP 2 STRT C19 AUX1_LEV JP8 1 2 2 1 R65 10K 1% R66 10K 1% 6 R67 10K 1% R68 10K 1% R70 68R 7 5 TL072 U5B 47/25 C15 R69 68R DIR+ C39 22P
INSRET
V+
47K
5 SW4B SUN 2P 47/25
1
Ec+ Ec-
4
C13
FACTORY FIT
JP6 2
V-
GND
-IN
R8 6K8
5
c
6
2
4
DIR-
1 2 SW4A 3 LD1 SUN 2P GREEN NF
3 R71 0R0 R9 6K8
2
R11 6K8 C51 1N5/MYL 2
C45 22N/MYL 2 1 VR7A 20KB
LG
3
1
b
FACTORY FIT
JP5 JUMP 2 STRT JP4 JUMP 2 STRT 1 2
FACTORY FIT
a
ALLEN&HEATH
Kernick Industrial Estate, Penryn, Cornwall, England. TR10 9LU Tel: +44 (0)8707 556250 Fax: +44 (0)8707 556251 A
ISSUE
BY
DATE
9
5
6
5
5
6
5
5
6
5
6
TITLE:
POT_GND
FILE: C4450_2P1.Sch PRINTED: 11:11:35 12-Dec-2001
ML3000 MONO INPUT
C4450
G ISSUE:
PAGE: DRG No: D E F
2
SHEET:
1
OF
2
H
B
C
D2
POSTFADE_2 POSTFADE_2 4 6 PREFADE_2 2 1 3 SW5A SUN 2P 1 2 AUX1_LEV JUMP 2 STRT JP10 1 2 JUMP 2 STRT SW5B SUN 2P 5 3 VR9A 20KK 4 1
SW6B SUN 2P 5 3
3
1
VR13A POT
4 1 POSTFADE_2 6
SW7B SUN 2P 5 SW8B SUN 4P 4 6 3 VR15A 20KK 2 R84 10K 4 1 5 2 5 10 11 SW8D SUN 4P 12 SW8A SUN 4P
FACTORY FIT
JP9 2 R81 10K AUX_1
6 PREFADE_2 2 R82 1 2 3 SW6A SUN 2P 3 10K VR14A POT AUX_5
1 3 PREFADE_2 1
SW7A SUN 2P 2
R85 10K 3 R86 10K AUX_8
1
e
VR10A 20KK
R83 10K 1
AUX_6
+VA 8
SW8C SUN 4P 8
VR16A 2X20KB 6 7 9 2
2
VR16B 2X20KB
3
V- V+
R80 10K
U7C TL072 AUX_2
2
R87 10K
AUX_7
3
VR11A 20KK
4
1 2 R90 10K AUX_3
U7A 1 VCA_S_HOLD 3 C47 22N/MYL LG R91 10K 1 3 4 6 1 3 4 6 GRP_4 R96 10K GRP_3 MUTE GRP_2 R92 10K R100 100K 2 1 3 U8A LM393 R110 470K GRP_1 +VB R104 3K9 LG AUX_4 D5 1N4148 TL072 R4 1K0 C53 10/50 LG R93 10K R107 2K7
-VA
U7B 6 7 5 TL072 C56 1/63 +VB PEAK_2 8 PEAK_1 CV R108 1M0 D7 1N4148 D8 1N4148 D9 1N4148 -VB 4 R40 22K R109 30K 2% U8B 6 7 5 LM393 +VB D10 1N4148 C54 10/50
2
d
3
VR12A 20KK
1
D6 1N4148
R30 2K2 1%
+VB R101 100K R102 100K PEAK
2
V- V+
PEAK_3
R88 10K R89 10K POSTFADE_1 R94 10K R95 10K R105 3K9 4 VR18A 10KAC 6 2 R106 3K9 3 VR18B 10KAC R44 4K7 1 5
2
SW10A SUN 2P
C55 10/50
U8C LM393
5
SW10B SUN 2P
-VB C20 POST_EQ_SW 47/25
PFL SWITCH
R117 22K 4 5 SW13B SUN 2P LD2 R119 R76 YELLOW 1 2 SW13A SUN 2P 3 470R D11 1N4148 -VB R103 100K METER PEAK POT_GND1 DG PFL_DET 3K3 6 PFL_BUS
LD3 DG RED LD4 RED 1 2 R118 470R
2
SW11A SUN 2P
MUTE_FET C57 100N 63V/PE
c
C50 100/25
MUTE SWITCH
3 SW12A SUN 2P 4 5 SW12B SUN 2P VCA_S_HOLD 6
5
SW11B SUN 2P
R58 0R0
R46 4K7
10 11 SW9D SW 4PDT ALPS 12 MIX_R R53 0R0 LG R52 0R0
EARTH 1 2 3 4 DG
EARTH SCREW TERMINAL
R45
R47 4K7 6
7 SW9C SW 4PDT ALPS MIX_L 9 PFL_BUS AUX_7 AUX_5 AUX_3 AUX_1 GRP_3 GRP_1 8 MIX_L +48V R111 10R PF C21 47/25 CN2 BOX 13X2 M 90 DEG C22 47/25 R114 10R PF LG VR17C 2X20KB BRKT VR18C 10KAC BRKT -VA C58 100N 63V/PE +VA R112 10R PF C23 47/25 C60 100N 63V/PE +VB R113 10R PF C25 47/25 C62 100N 63V/PE +VC
MUTE
C65 1N/MYL C66 1N/MYL
b
1 R48 4K7 2
4K7 VR17A 2X20KB
R49 VR17B 2X20KB 4K7 5
5 SW9B SW 4PDT ALPS 6 MIX_C
25 23 21 19 17 15 13 11 9 7 5 3 1
4
4
25 23 21 19 17 15 13 11 9 7 5 3 1
LG C59 100N 63V/PE R115 10R PF -VB C24 47/25 C61 100N 63V/PE R116 10R