Toa PA-1230B, PA-3640B, PA-2440B Operating Instructions Manual

OPERATING INSTRUCTIONS

POWER AMPLIFIER

PA-1230B
PA-2440B
PA-3640B

Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.

This illustration shows the PA-2440B.

1. SAFETY PRECAUTIONS .......................... 2

2. GENERAL DESCRIPTION ........................ 4

3. PART NAMES AND FUNCTIONS

Front Panel ................................................. 4

Rear Panel ................................................. 4

4. RACK MOUNTING .................................... 5

5. AC POWER SUPPLY CONNECTION ....... 5

6. 24 V DC POWER SUPPLY ........................ 6

7. OUTPUT CONNECTIONS ......................... 6

8. SPECIFICATIONS ...................................... 7

TABLE OF CONTENTS

2

1. SAFETY PRECAUTIONS

• Be sure to read the instructions in this section carefully before use.

• Make sure to observe the instructions in this manual as the conventions of safety symbols and messages
regarded as very important precautions are included.

• We also recommend you keep this instruction manual handy for future reference.

Safety Symbol and Message Conventions

Safety symbols and messages described below are used in this manual to prevent bodily injury and property
damage which could result from mishandling. Before operating your product, read this manual first so you are
thoroughly aware of the potential safety hazards as well as understand the safety symbols and messages.

When Installing the Unit

• Do not expose the unit to rain or an environment where it may be splashed by water or other liquids, as
doing so may result in fire or electric shock.

• Use the unit only with the voltage specified on the unit. Using a voltage higher than that which is specified
may result in fire or electric shock.

• Do not cut, kink, otherwise damage nor modify the power supply cord. In addition, avoid using the power
cord in close proximity to heaters, and never place heavy objects -- including the unit itself -- on the power
cord, as doing so may result in fire or electric shock.

• Be sure to replace the unit's terminal cover after connection completion. Because the voltage of up to 100 V
is applied to the high impedance speaker terminals, never touch these terminals to avoid electric shock.

• Avoid installing or mounting the unit in unstable locations, such as on a rickety table or a slanted surface.
Doing so may result in the unit falling down and causing personal injury and/or property damage.

• Ensure that the voltage selector is properly set to the local power voltage. Wrong settings may cause a fire
or electric shock.

When the Unit is in Use

• Should the following irregularity be found during use, immediately switch off the power, disconnect the
power supply plug from the AC outlet and contact your nearest TOA dealer. Make no further attempt to
operate the unit in this condition as this may cause fire or electric shock.

· If you detect smoke or a strange smell coming from the unit.

· If water or any metallic object gets into the unit

· If the unit falls, or the unit case breaks

· If the power supply cord is damaged (exposure of the core, disconnection, etc.)

· If it is malfunctioning (no tone sounds.)

• To prevent a fire or electric shock, never open nor remove the unit case as there are high voltage
components inside the unit. Refer all servicing to your nearest TOA dealer.

• Do not place cups, bowls, or other containers of liquid or metallic objects on top of the unit. If they
accidentally spill into the unit, this may cause a fire or electric shock.

• Do not insert nor drop metallic objects or flammable materials in the ventilation slots as this may result in fire
or electric shock.

• Do not touch a plug or antenna during thunder and lightning, as this may result in electric shock.

Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.

WARNING

3

When Installing the Unit

• Never plug in nor remove the power supply plug with wet hands, as doing so may cause electric shock.

• When unplugging the power supply cord, be sure to grasp the power supply plug; never pull on the cord
itself. Operating the unit with a damaged power supply cord may cause a fire or electric shock.

• When moving the unit, be sure to remove its power supply cord from the wall outlet. Moving the unit with the
power cord connected to the outlet may cause damage to the power cord, resulting in fire or electric shock.
When removing the power cord, be sure to hold its plug to pull.

• Do not block the upper panel ventilation slots in the unit's cover. Doing so may cause heat to build up inside
the unit and result in fire.

• Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the
heaters, or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric
shock.

• Install the unit only in stable locations, and make appropriate arrangements to prevent it from falling down or
rolling cross the floor. If it falls down or moves, this may cause personal injury and/or property damage.

• When unpacking or moving the unit, be sure to handle it with two or more persons. Falling or dropping the
unit may cause personal injury and/or property damage.

When the Unit is in Use

• Do not place heavy objects on the unit as this may cause it to fall or break which may result in personal
injury and/or property damage. In addition, the object itself may fall off and cause injury and/or damage.

• Do not operate the unit for an extended period of time with the sound distorting. This is an indication of a
malfunction, which in turn can cause heat to generate and result in a fire.

• Contact your TOA dealer as to the cleaning. If dust is allowed to accumulate in the unit over a long period of
time, a fire or damage to the unit may result.

• If dust accumulates on the power supply plug or in the wall AC outlet, a fire may result. Clean it periodically.
In addition, insert the plug in the wall outlet securely.

• Switch off the power, and unplug the power supply plug from the AC outlet for safety purposes when
cleaning or leaving the unit unused for 10 days or more. A fire or electric shock may result.

Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.

CAUTION