ALLEN & HEATH WZ20:8:2, Руководство по обслуживанию

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ALLEN & HEATH
2
2E-8SM
CONTENTS
INTRODUCTION, SERVICE AND TECHNICAL SUPPORT ............................................................................. 2
TECHNICAL DESCRIPTION ............................................................................................................................. 3
SPECIFICATION & CONNECTIONS ................................................................................................................. 4
DIMENSIONS FOR FLIGHTCASING, INSTALLING THE CONSOLE .............................................................. 5
REMOVING THE CONNECTOR CIRCUIT BOARD .......................................................................................... 6-7
REMOVING A MONO or STEREO INPUT, LEFT or RIGHT CIRCUIT BOARD .............................................. 8-9
INTERNAL LINK OPTIONS ............................................................................................................................... 10-11
ORDERING A CONSOLE, SPARE PARTS & ASSEMBLIES .......................................................................... 12-14
FRONT & REAR PANELS ................................................................................................................................. 15
TRANSFORMER & POWER WIRING ............................................................................................................... 16-17
MONO INPUT CIRCUIT BOARD COMPONENT IDENT .................................................................................. AG2894
MONO INPUT CIRCUIT DIAGRAM ................................................................................................................... C2894
STEREO INPUT CIRCUIT BOARD COMPONENT IDENT .............................................................................. AG2937
STEREO INPUT CIRCUIT DIAGRAM ............................................................................................................... C2937
LEFT CIRCUIT BOARD COMPONENT IDENT ................................................................................................. AG2938
LEFT CIRCUIT BOARD CIRCUIT DIAGRAM sheet 1 ...................................................................................... C2938
LEFT CIRCUIT BOARD CIRCUIT DIAGRAM sheet 2 ...................................................................................... C2938
RIGHT CIRCUIT BOARD COMPONENT IDENT .............................................................................................. AG2939
RIGHT CIRCUIT BOARD CIRCUIT DIAGRAM sheet 1 .................................................................................... C2939
RIGHT CIRCUIT BOARD CIRCUIT DIAGRAM sheet 2 .................................................................................... C2939
CONNECTOR CIRCUIT BOARD COMPONENT IDENT .................................................................................. AG2940A
CONNECTOR CIRCUIT BOARD CIRCUIT DIAGRAM sheet 1 ........................................................................ C2940A
CONNECTOR CIRCUIT BOARD CIRCUIT DIAGRAM sheet 2 ........................................................................ C2940A
CONNECTOR CIRCUIT BOARD CIRCUIT DIAGRAM sheet 3 ........................................................................ C2940A
CONNECTOR CIRCUIT DAUGHTER BOARD COMPONENT IDENT ............................................................. AG2940B
CONNECTOR CIRCUIT DAUGHTER BOARD CIRCUIT DIAGRAM ............................................................... C2940B
BLOCK DIAGRAM .............................................................................................................................................. 34
INTRODUCTION
The information presented in this manual is intended for competent technical personnel to carry out service and product
support for the
MixWizard WZ 20:8:2 . 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 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 further information on the operation and application of the MixWizard WZ 20:8:2 please refer to the
USER GUIDE
publication AP2932 supplied with each console.
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 conditions the MixWizard WZ 20:8:2 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 the most
efficient service please would you quote the console serial number in any communication regarding this product.
copyright © 1997 ALLEN & HEATH. All rights reserved
Publication ..................... AP2933 Issue 1
SAFETY WARNING !
Mains electricity is dangerous and can kill. Mains voltage is present within the unit. Do not remove any
covers with mains 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 on the rear panel next to the mains socket. 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.