. Various GL4000 service manual AP2640 3 NO PSU free download

File name GL4000 service manual AP2640_3 NO PSU.pdf

PSU not included in public version. Please see distributor version. ALLEN&HEATH GL4000 Dual Function Audio Mixing Console SERVICE MANUAL PUBLICATION: AP2640 INTRODUCTION The information presented in this manual is intended for competent technical personnel to carry out service and product support for the GL4000. It is assumed 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 GL4000 please refer to the USER GUIDE publication AP2642 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 GL4000 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. SAFETY WARNING ! Mains electricity is dangerous and can kill. Mains voltage is present within the console power supply unit. Do not remove the top cover 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 factory set and is indicated on the rear panel. Check that this matches your local mains supply. Check your mains wiring and earthing before switching on. DO NOT REMOVE THE MAINS EARTH CONNECTION! The console chassis is always connected to mains earth. This manual is printed in four sections: SECTION A provides all the technical information and service procedures. It also details how to order spare parts for the GL4000 console and meterpod, the RPS11 power supply unit and the RPSD2 dual supply combiner/monitor. The contents of the GL4000 spares kits is also listed. SECTION B contains the fitting instructions for the expander and add-on options. SECTION C contains all the technical diagrams for the GL4000 console, the meterpod option and the SYS-LINK option. Any technical bulletins are also in this section. Technical information for the console power supply