For Qualified Service Technicians only
INSTALLATION INSTRUCTIONS FOR SYSTEM
MANAGEMENT AMPLIFIERS VM-2120 AND VM-2240
This manual gives qualified service technicians the instructions for the work in the TABLE OF
CONTENTS below.
Use this manual referring to the instruction manual supplied with the VM-2120 or VM-2240 System
Management Amplifier.
Note that the section numbers and names in this manual are the same as those in the VM-2120/-2240
instruction manual.
TABLE OF CONTENTS
13. CHOKE COIL INSTALLATION ............................................................................................ 2
14.
INPUT TRANSFORMER INSTALLATION AND ITS BOARD MODIFICATION
14.1. Transformer Installation ......................................................................................................... 3
14.2. Switching Off the Phantom Power Supply ............................................................................. 4
14.3. Instructions When the Sub- and Master VM Amplifiers Are Connected ................................ 4
15. MOUNTING AN OPTIONAL EV-200 VOICE ANNOUNCEMENT BOARD ............ 5
16. MOUNTING AN OPTIONAL SV-200M SURVEILLANCE BOARD ........................... 7
20. CHANGING THE SPEAKER LINE VOLTAGE ................................................................ 9
23. FUNCTION SWITCH OPERATION
23.2. VM Amplifier's Internal Function Switches .......................................................................... 10
USE OF VR COVERS (Described only in this manual) ..................................................... 11
English: page 1
Deutsch: seite 13
Français: page 25
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