Toa VM-2120, VM-2240 Installation Instructions Manual

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

2

13. CHOKE COIL INSTALLATION

Caution: Leave the following work to a qualified service technician.

Be sure to unplug the AC power cord before the work.

If a checkbox for the indication of "The choke coil is installed." on the rear panel of the VM amplifier is marked
with "X", this represents that the choke coil has been installed. Therefore, the following tasks are not
necessary. When you installed the choke coil, mark the checkbox with "X".

To suppress harmonic component radiation from the power line of the unit, install the optional Chock Coil CT­200M.

Note: In the countries where use of the CE Marking conformity is obligated, the Choke Coil must be installed.

Step 1. Remove 4 screws on the amplifier rear panel and a total of 6 screws on the sides to remove the

cover.

Step 2. Install the Chock Coil near the AC inlet inside the unit.

Fix the Choke Coil with its accessory screws from the unit bottom side.

Step 3. Remove the jumper connector from the

power input board connector (CN1202).

Step 4. Plug the Choke Coil connector into the

power input board connector (CN1202).

Step 5. Using the 4 rear panel screws and 6 side panel screws removed in Step 1, replace the amplifier

cover.

Side: M4 x 8 machine screw ..... 3 pieces each

Rear: M3 x 6 machine screw and M3 plain washer ..... 4 pieces

Rear panel

Bottom side

CT-200M Choke coil

Jumper connector

Power input board

Tapping screw 4 x 10

Choke coil connector

3

4

AC inlet

CT-200M Choke coil

Rear panel

3

14. INPUT TRANSFORMER INSTALLATION AND ITS BOARD MODIFICATION

Caution: Leave the following work to a qualified service technician.

Be sure to unplug the AC power cord before the work.

14.1. Transformer Installation

You can convert the audio input section in Input 1 – 3 terminals, Remote Microphone (RM) terminal, and
Telephone Paging (TEL) terminal on the unit from electronically-balanced input to transformer-balanced type.
Solder the optional IT-450 input transformer to the required input section.

Step 1. Remove 4 screws on the amplifier rear panel and a total of 6 screws on the sides to remove the

cover.

Step 2. Removing the input transformer board

[Inputs 1 – 3]

Remove the Inputs 1 – 3 input transformer board, which is installed on the rear upper circuit board in
the unit.

[Remote Microphone (RM) or Telephone Paging (TEL)]

Remove the RM/TEL input transformer board, which is installed on the rear lower circuit board in the
unit.

Side: M4 x 8 machine screw ..... 3 pieces each

Rear: M3 x 6 machine screw and M3 plain washer ..... 4 pieces

Input transformer

Inputs 1 – 3 input transformer board

RM/TEL input transformer board

Rear upper
circuit board

Rear lower circuit board

4

Step 3. Solder the input transformer to the removed input transformer board (5 places).

Note: Be sure not to mistake the solder side for the mounting side.

Step 4. Cut off jumper wires (2 places marked with X for each input).

Note: The jumpers are on the back of the circuit board in the figure below.

[Inputs 1 – 3 input transformer board]

[RM/TEL input transformer board]

Step 5. Replace the input transformer board on the circuit board.

Step 6. Using the 4 rear panel screws and 6 side panel screws removed in Step 1, replace the amplifier

cover.

14.2. Switching Off the Phantom Power Supply

By cutting the following jumper wires on the Inputs 1 – 3 Input Transformer Board, the corresponding input's
phantom power can be switched off. (See the figure above.)

Input 1: SJP1301
Input 2: SJP1304
Input 3: SJP1307

14.3. Instructions When the Sub- and Master VM Amplifiers Are Connected

• Be sure to cut the jumper wires SJP1401, SJP1402, and SJP1403 on the RM/TEL input transformer board in
the sub-VM amplifier.

• To make the Remote Microphone (RM) input transformer-isolated, be sure to install the input transformer on
the RM/TEL input transformer board in the master VM amplifier. In addition, cut the jumper wires SJP1402
and SJP1403 while remaining SJP1401 intact.

Jumpers for Input 1

(SJP1303)

INPUT 1 INPUT 2 INPUT 3

(SJP1301)

(SJP1302)

Jumper for Input 1
phantom power supply

(SJP1402)

Jumpers for RM

(SJP1403)

Jumpers for Input 2

(SJP1401)

RM TEL

(SJP1305)

(SJP1306)

(SJP1304)

(SJP1307)

Jumper for Input 2
phantom power supply

Jumpers for Input 3

(SJP1308)

(SJP1309)

Jumper for Input 3
phantom power supply

(SJP1404)

Jumpers for TEL

(SJP1405)

Jumper for DC power supply to the RM

5

15. MOUNTING AN OPTIONAL EV-200 VOICE ANNOUNCEMENT BOARD

Caution: Leave the following work to a qualified service technician.

Be sure to unplug the AC power cord before the work.

Step 1. Set the DIP switch on the EV-200 Board as shown in the figure.

EV-200 surveillance signal output (Switch No. 2)

The EV-200 board always transmits a 1 kHz sine wave signal to an amplifier when the EV-200 Board is not
reproducing audio signals. The amplifier detects the existence of the 1 kHz signal. When the signal does not
exist, the amplifier judges the board's failure and causes the FAULT indicator to light.* (The signal indicating
the EV-200's failure is transmitted from the CONTROL I/O connector.)

* If Switch No. 2 is set to the OFF position, the FAULT indicator lights even when the board is operating

correctly.

Step 2. Remove 4 screws on the amplifier rear panel and a total of 6 screws on the sides to remove the

cover.

Step 3. Insert the EV-200 connection cable coming from the EV-200 Board into connector CN8 in the

amplifier.

Do not handle unless your body is static-free because some of the assembled components are
sensitive to static electricity.

DIP switch

EV-200 Board

DIP switch

ON

3

4

OFF

SW 1

1

3

4

2

F

F

O

SW 1

1

2

F

F

O

Always set to OFF.
(ON position is for factory test.)

EV-200 surveillance signal output on-off (Switch No. 2)

Be sure to set to ON. (A 1 kHz signal output)

Side: M4 x 8 machine screw ..... 3 pieces each

Rear: M3 x 6 machine screw and M3 plain washer ..... 4 pieces

EV-200 connection cable

CN6

CN8

Rear panel

EV-200 Board

CF card connector

6

Step 4. Using 2 screws supplied with the EV-200, mount the EV-200 in the amplifier.

Step 5. Check the DIP switch on the EV-200 Board again for correct setting. (See Step 1.)

Step 6. Using the 4 rear panel screws and 6 side panel screws removed in Step 2, replace the amplifier

cover.

CF Card security cover

Remove 2 screws to detach the security cover when inserting the CF Card into the card slot. Be sure to
replace the cover after inserting the card.

EV-200 connection cable

CN8

M3 x 6 machine screw ..... 2 pieces (supplied with the EV-200)

EV-200 Board

EV-200 Board

CF Card

CF Card security cover

M3 x 4 machine screw (2 pieces)

7

16. MOUNTING AN OPTIONAL SV-200M SURVEILLANCE BOARD

Caution: Leave the following work to a qualified service technician.

Be sure to unplug the AC power cord before the work.

Step 1. Set the DIP switch on the SV-200M Board as shown in the figure.

Speaker line surveillance activation time

SW1-1 SW1-2 SW2-1 Setting contents

OFF OFF OFF

Automatic activation
disabled

ON OFF OFF

10 minutes intervals

OFF ON OFF

20 minutes intervals

ON ON OFF

30 minutes intervals

OFF OFF ON

30 minutes intervals

ON OFF ON

40 minutes intervals

OFF ON ON

50 minutes intervals

ON ON ON

60 minutes intervals

This setting executes failure detection by means of
the "speaker line surveillance activation" signal from
the external control input (SURVEILLANCE I/O 25­pin D-sub connector).

Speaker lines are automatically monitored at set
time intervals.

SW2-2 Setting contents

OFF

Disabled (communications impossible)

ON

Enabled (when SV-200M Board is
installed in VM amplifier)

Communications with VM (VM-2120 or VM-2240) amplifier

Step 2. Remove 4 screws on the amplifier rear panel and a total of 6 screws on the sides to remove the

cover.

Do not handle unless your body is static-free because some of the assembled components are
sensitive to static electricity.

SW 1 SW 2

ON

1

Speaker line surveillance activation time

ON

1

2

2

Communication with VM amplifiers

Be sure to set to ON.

SW 1 SW 2

SV-200M Board

Side: M4 x 8 machine screw ..... 3 pieces each

Rear: M3 x 6 machine screw and M3 plain washer ..... 4 pieces

8

Step 3. Detach the surveillance I/O blank panel on the

amplifier rear panel by removing 2 fixing snap rivets.

Step 4. Unscrew 2 hexagonal sleeves mounted on the 25-pin

D-sub connector on the SV-200M Board.

Step 5. Connect the SV-200M Board to the VM amplifier's boards with the connection cables.

5-1. Plug out the jumper connector from the relay board connector (CN1003) shown below.

5-2. Connect the 2 cables attached to the SV-200M to the connectors in the VM amplifier's boards shown

below.

Step 6. Using the removed 2 hexagonal sleeves,

mount the SV-200M in the amplifier.

Step 7. Check the DIP switch on the SV-200M Board again

for correct setting. (See Step 1.)

Step 8. Using the 4 rear panel screws and 6 side panel screws removed in Step 2, replace the amplifier

cover.

Surveillance I/O blank panel

Snap rivet

D-sub connector

Hexagonal sleeve

CN6 connection cable

5

-2

CN1003 connection cable

CN1003

CN6

CN8

SV-200M Board

SV-200M Board

D-sub connector

Relay board

Jumper connector

5

-1

Rear panel

SV-200M Board

Hexagonal sleeve

9

20. CHANGING THE SPEAKER LINE VOLTAGE

Caution: Leave the following work to a qualified service technician.

Be sure to unplug the AC power cord before the work.

The VM amplifier's speaker line voltage is set for 100 V line output. For 50 V or 70 V line applications, change
internal connector wiring as shown below.

Step 1. Remove 4 screws on the amplifier rear panel and a total of 6 screws on the sides to remove the

cover.

Step 2. Pull the cable connector (9-pin) connected to CN1102

connector on the circuit board with the zone volume control
(selector switch).

Step 3. Change wires inserted into the cable connector for different

wires according to color-coding shown in the table below to
switch to the desired line voltage.

Step 4. Connect the cable connector to the circuit board.

Step 5. Using the 4 rear panel screws and 6 side panel screws

removed in Step 1, replace the amplifier cover.

Connector pin assignment

Speaker line voltage/impedance

How to remove cables from connector

Pull out the cable pressing the lock spring with a pointed object like tweezers as shown below.

Speaker line voltage CN1102 Connector Pin Number

123456789

100 V White Violet Blue Green Yellow Orange Red Brown Black

70 V Violet Blue Green Yellow Orange Red Brown White Black
50 V Blue Green Yellow Orange Red Brown White Violet Black

Speaker line voltage VM-2120 VM-2240

100 V 83 Ω 42 Ω

70 V 42 Ω 21 Ω
50 V 21 Ω 10 Ω

CN1102 connector

VM amplifier's front panel

Pull out the cable.

1

Press the lock spring.

9

10

23. FUNCTION SWITCH OPERATION

23.2. VM Amplifier's Internal Function Switches

Caution: Leave the following work to a qualified service technician.

Be sure to unplug the AC power cord before the work.

Step 1. Remove 4 screws on the amplifier rear panel and a total of 6 screws on the sides to remove the

cover.

Step 2. Set the amplifier's internal DIP switches SW2, SW3, and SW4 according to the table below.

Step 3. Replace the amplifier cover using the screws removed in Step 1.

SW2 switch setting (All switches are factory-preset to OFF position.)

SW3 switch setting (All switches are factory-preset to OFF position.)

* This function is set in relation to the SW2-8 switch. (For details, see p. 26 "GENERAL-PURPOSE

BROADCAST PRIORITY" of the instruction manual supplied with the VM-2120 or VM-2240.)

Switch No. 1 2 3 4 5 6 7 8
Function

Input 1 Input 2 Input 3 Message 3 Message 4 Message 5

ON 1 1 1 1 3 3 3

OFF 2 2 2 2 1 1 1

Priority Mode
for Same
Priority Unit
Unit No. Priority
(Numerical order)
First/Last
Priority

Inputs 1 – 3
Broadcast Priority Level

Voice Announcement Board's
Message Priority Level

TEL Paging
Priority Level

Switch No. 1 2 3 4 5 6 7 8
Function

ON Mixed Silent On Sub-unit

(off)

OFF Off

(on)

First/Last
Priority*

First-come
first-served
Last-come
first-served

Not mixed

Evacuation
message

Master
unit

Priority 2
Mixing

Mode after
Emergency Talk

Input 3/LINE
(Input 3/MIC)
Chime On/Off

Unit Type No. of Connected

Units

See the Connected
unit No. table on the
next page.

Side: M4 x 8 machine screw ..... 3 pieces each

Rear: M3 x 6 machine screw and M3 plain washer ..... 4 pieces

SW4

SW3

SW2

Internal DIP switches

SW4 SW3

ON

1

ON

2

234567

1

8

SW2

ON

2345678

1

VM amplifier's front panel

11

Connected unit No. table (SW3)

* The total number of one Sub-VM amplifier and up to 4

Remote Microphones (excluding the Master amplifier
and Remote Microphone Extension)

SW4 switch setting (Both switches are factory-preset to ON position.)

* Determines the attenuation level when the broadcast of higher priority (level 2 or 3) overrides the BGM

broadcast (priority level 4). (For details, see p. 26 "GENERAL-PURPOSE BROADCAST PRIORITY" of the

instruction manual supplied with the VM-2120 or VM-2240.)

USE OF VR COVERS

The VM-2120/-2240 has 4 VR covers attached as accessories. They are prepared as security covers for the
setting of volume and tone controls. Remove the knob of volume or tone control and put the VR cover instead
of it.
If you need more VR covers, they are available as spare parts.

Switch No.

No. of Connected Units*

6 7 8

OFF OFF OFF 0

ON OFF OFF 1

OFF ON OFF 2

ON ON OFF 3

OFF OFF ON 4

ON OFF ON 5

Switch No.

BGM broadcast volume attenuation*

1 2

OFF

OFF

No attenuation

ON

–28 dB (just audible)

ON Don't care –∞dB (inaudible)