Ericsson GE EDACS C3 MAESTRO Maintenance Manual

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LBI-39062

Mobile Communications

EDACS

C3 MAESTRO CONSOLE SYSTEM

TABLE OF CONTENTS

INSTALLATION, SET-UP AND TESTING ....................................... LBI-39055

BACKPLANE AND SPREADER BOARDS........................................ LBI-39063

AUDIO PA BOARD............................................................................ LBI-39064

AUDIO MATRIX BOARD.................................................................. LBI-39065

I/O BOARD......................................................................................... LBI-39066

VOLUME CONTROLLER BOX......................................................... LBI-38719

LOGIC BOARD .................................................................................. LBI-38720

Maintenance Manual

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Summary of Contents for Ericsson GE EDACS C3 MAESTRO

Page 1 LBI-39062 Mobile Communications ® EDACS C3 MAESTRO CONSOLE SYSTEM TABLE OF CONTENTS INSTALLATION, SET-UP AND TESTING ........LBI-39055 BACKPLANE AND SPREADER BOARDS........LBI-39063 AUDIO PA BOARD................LBI-39064 AUDIO MATRIX BOARD..............LBI-39065 I/O BOARD..................LBI-39066 VOLUME CONTROLLER BOX............LBI-38719 LOGIC BOARD .................. LBI-38720 Maintenance Manual...
Page 2: Table Of Contents
Ericsson GE Mobile Communications Inc., at any time and without notice. Such changes will be incorportated into new editions of this manual. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose, without the express written permission of Ericsson GE Mobile Communications Inc.
Page 3: Specifications
DC bias = 3.0 ±0.5 Vdc at 50 ohms. Desk Mic Input for an electret-type microphone similar to Ericsson GE part number 19C851086P10 or P11. Typical input = 300 mVp-p. ALC/clipping threshold = 600 mVp-p. DC bias = 5.7 ±0.5 Vdc at 1000 ohms.
Page 4 LBI-39062 OTHER INPUTS MICROPHONE PTT AND MONITOR SWITCH Active-low inputs used to detect "dry-contact" switch closures of the type found in standard microphones, footswitches and headset jacks. Typical open-circuit voltage = 12 Vdc. Max. open-circuit voltage = 16 Vdc. Max. short-circuit current = 30 mA.
Page 5: Introduction
• a set of speakers (typically two) custom C3 Maestro application program developed by • Ericsson GE. This custom program automatically starts other accessories such as headsets, microphones when the computer is "booted". PC components also and footswitches include the video display monitor ("CRT") and a standard The Audio Tower consists of: PC keyboard.
Page 6: Standard Pc Keyboard
LBI-39062 • System Message/Command Line Area − This displayed page, the indicator is high-lighted in red. area, located at the bottom left-hand side of the screen, displays prompts and operator-entered data • System Status Area − This area indicates various such as radio ID numbers.
Page 7: Cec/Imc Interface
LBI-39062 example, when the Logic Board senses a microphone CEC/IMC Interface change via a mic jack sense line from the Audio Tower, it The PC's COM1 serial port provides the control data switches the matrix circuitry on the Audio Matrix Board connection for the C3 Maestro.
Page 8: Audio Tower
LBI-39062 • furnishes 15 Vdc interconnections from the power supply to five (5) simulselect keys these boards. • eleven (11) patch keys In a C3 Maestro console system equipped with multiple • unselect speakers, two (2) Audio PA Boards are required. five (5) telephone/intercom keys Essentially, the Spreader Board's earns its name in a •...
Page 9: All Console Installations
LBI-39062 Line A output (destination). This audio is applied to In a typical C3 Maestro console installation, the Audio Tower is equipped with only one Audio PA Board (#1) and channel 1 of the console's CIM within the CEC/IMC. this board is installed in the slot position adjacent to the Other Audio Matrix Board functions/circuits include: Audio Matrix Board.
Page 10: I/O Board
LBI-39062 to-talk (PTT) button at one of the connected mics or a VOLUME CONTROLLER BOX footswitch. The Volume Controller Box contains volume controls A pager audio input is provided at the I/O Board. for the speakers. Normally, there are two (2) volume When enabled, paging audio overrides all other mic audio controls, one for the select speaker and one for the unselect inputs.
Page 11: Operating Procedures
Refer to the C3 Maestro Training Manual LBI-38660 descriptions board-level test alignment for complete operation details. This manual includes User procedures. Training Study Guide ECR-4488 and Administrators Training Manual ECR-4489. Ericsson GE Mobile Communications Inc. Mountain View Road • Lynchburg, Virginia 24502 Printed in U.S.A.
Page 12: Outline Diagram − − C3 Maestro Console System
LBI-39062 OUTLINE DIAGRAM NOTE See the parts list on page 14 for item descriptions. NOTES: 1. FURNITURE NOT SUPPLIED AS PART OF SYSTEM. 2. ITEM 6 NOT SHOWN. C3 MAESTRO CONSOLE SYSTEM Sheet 1 of 2 (Made from 903-0001-000 Rev. 0)
Page 13 OUTLINE DIAGRAM LBI-39062 C3 MAESTRO CONSOLE SYSTEM AUDIO TOWER (REAR PANEL) Sheet 2 of 2 (903-0007-000, Rev. 1)
Page 14: Parts List
LBI-39062 PARTS LIST C3 MAESTRO CONSOLE SYSTEM P29/7720033000 (344A3927P11) − − 2 SPEAKERS P29/7720033001 (344A3927P28) − − 4 SPEAKERS ISSUE 2 SYMBOL PART NUMBER DESCRIPTION P29/7720032000 Audio Tower (equipped for 2-speaker operation − one Audio PA Boards). (344A3927P15) P29/7720032001 Audio Tower (equipped for 4-speaker operation −...
Page 15: Mechanical Parts − − Audio Tower
MECHANICAL PARTS LBI-39062 FRONT (4 PLACES) 103, 104 100, 101 NOTES: EXPLODED VIEW FROM REAR. SECOND AUDIO PA BOARD REQUIRED ONLY IF UNSELECT SPEAKER 2 OR 3 USED OR IF CONSOLE IS INTERFACED TO A CALL DIRECTOR. SEE NOTE 2. REAR (MADE FROM 903-0002-000, Sh.