Toa wt 4820 manual

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fl TOA

UHF WIRELESS TUNER

OPERATING INSTRUCTIONS

WT-4820

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TABLE OF CONTENTS
1. SAFETY PRECAUTIONS ........................... 2 7. PRECAUTIONS ON ANTENNA
2. GENERAL DESCRIPTION 3 INSTALLATION .....
3. FEATURES ........................ .3 8. OPERATION
4. HANDLING PRECAUTIONS 3 9. CONNECTION
5. NOMENCLATURE AND FUNCTIONS 10. INSTALLATION
Front ............................................................ 4 10.1. Rack Mounting ................................... 7
Rear ............................................................. 4 10.2. Installing the Unit on a Desk ..... 8
6. INSTALLING THE WTU-4800 11. SPECIFICATIONS 8
TUNER MODULE ....................................... 5 Accessories ............... 8

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.

TOA Corporation

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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.

0 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 and
understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.

AWARNING

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

When Installing the Unit

0 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.

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.

To prevent lightning strikes, install the unit at least
five meters away from a lightning rod, and yet
within the protective range (angle of 45°) of the
lightning conductor. Lightning strikes may cause a
fire, electric shock or personal injury.

Since the unit is designed for in-door use, do not
install it outdoors. If installed outdoors, the aging of
parts causes the unit to fall off, resulting in personal
injury. Also, when it gets wet with rain, there is a
danger of 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 touch a plug or antenna during thunder and
lightning, as this may result in electric shock.

A CAUTION

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

The servicing instructions are for use by qualified
personnel only. To reduce the risk of electric shock
do not perform any servicing other than that
contained in the operating instructions unless you
are qualified to do so. Refer all servicing to qualified
service personnel.

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.