Rotel RT 990BX OM

Page 1

HOTEL/ms-

' RT-QQOBX

STEREO FM TUNER

OWNER'S MANUAL

WARNING:

v TO PREVENT FIRE OR SHOCK HAZARD,

DO NOT EXPOSE THIS APPLIANCE TO
RAlN OR MOISTURE.

Write your SERTAL NUMBER here.
The number is located near the
name plate on the rear panel.

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SAFETY INSTRUCTIONS

1. Read Instructions - All the safety and operating instructions should I

be read before the appliance is operated.

2.- Retain Instructions -- The safety and operating instructions should
be retained for future reference. '

3. Heed Warnings - All warnings on the appliance and in the operating
instructions should be adhered to.

4. Follow Instructions - All operating and use instructions should be
followed.

5. Water and Moisture - The appliance should not be used near water
- for example, near a bathtub, washbowl. kitchen sink, laundry tub, in
a wet basement. or near a swimming pool, and the like.

6. Carts and Stands - The appliance PORTABLE CART
should be used only with a cart or stand that WARNING

is recommended by the manufacturer.
6A. An appliance and cart combination
should be moved with care. Quick stops,
excessive force, and uneven surfaces may
cause the appliance and cart combination
to overturn. .

7. Wall or Ceiling Mounting - The
appliance should be mounted to a wall or
ceiling only as recommended by the
manufacturer.

8. Ventilation - The appliance should be situated so that its location
or position does not interfere with its proper ventilation For example, the
appliance should not be situated on a bed, sofa, rug, or similar surface
that may block the ventilation openings; or placed in a built-in installation
such as a bookcase or cabinet that may impede the flow of air through
the ventilation openings.

9. Heat - The appliance should be situated away from heat sources
such as radiators, heat registers, stoves, or other appliances (including
amplifiers) that produce heat.

10. Power Sources - The appliance should be connected to a power
supply only of the type described in the operating instructions or as
marked on the appliance.

11. Grounding or Polarization - The precautions that should be taken
so that the grounding or polarization means of an appliance is not
defeated.

12. Power-Cord Protection - Power-supply cords should be routed so
that they are not likely to be walked on or pinched by items placed upon
or against them, paying particular attention to cords at plugs, convenience
receptacles. and the point where they exit from the appliance.

53125A

13. Cleaning -- The appliance should be cleaned only asrrecomrnended
by the manufacturer. ,

14. Nonuse Periods -- The power cord of the appliance should be
unplugged from the outlet when left unused for a long period of time.
15. Obiect and Liquid Entry - Care should be taken so that objects
do not fall and liquids are not spilled into the enclosure through openings.
16. Damage Requiring Service - The appliance should be serviced
by qualified factory authorized service personnel when: A. The power-
supply cord or the plug has been damaged; or

B. Objects have fallen, or liquid has been spilled into the appliance: or
O. The appliance has been exposed to rain; or

D. The appliance does not appear to operate normally or exhibits a
marked change in performance: or

E. The appliance has been dropped, or the enclosure damaged.

17. Servicing - The user should not attempt to service the appliance
beyond that described in the operating instructions. All other servicing
should be referred to qualified factory authorized service personnel.

WARNING: To reduce the risk of fire or electric shock, do not
expose this appliance to rain or moisture

RISK OF ELECTRIC SHOCK
DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK). NO USER
SERVICEABLE PARTS INSIDE. REFER SERVICING TO

QUALIFIED SERVICE PERSONNEL.

o Explanation of Graphical Symbols

The lightning flash with arrowhead symbol. within an

equilateral triangle, is intended to alert the user to the A
presence of uninsulated dangerous voltage" within the

products enclosure that may be of sufficient magnitude

to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.

Power Lines - An outdoor antenna should be located away from pow-
er lines.

Outdoor Antenna Grounding - If an outside antenna is connect-
ed to the receiver, be sure the antenna system is grounded so as to
provide some protection against voltage surges and built up static
charges. Section Stoofthe National Electrical Code, ANSI/NFPA No.
70-1984, provides information with respect to proper grounding of
the mast and supporting structure, grounding of the leadvin wire to
an antenna discharge unit, size of grounding conductors, location of
antenna-discharge unit, connection to grounding electrodes, and re-
quirements from the grounding electrode. See Figure.

a - Use No. 10 AWG (5.3 mmz) copper, No. 3 AWG (8.4 mm) aluminum,
No. 17 AWG (1.0 mml) copper-clad steel or bronze wire, of larger,
as a ground wire.

b- Secure antenna lead.in and ground wires to house with stand-off
insulators spaced from 4-6 feet (1.22 - 1.83 m) apart.

c- Mount antenna discharge unit as close as possible to where lead-
in enters house. '

d- Use jumper wire not smaller than No. 6 AWG (13.3 mm) copper,
or the equivalent, when a separate antenna-grounding electrode
is used.

EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELEC-
TRICAL CODE INSTRUCTIONS

FOWEFI LINES

STANDOFF

INSULATOFIS"

MAST

ANTENNA
SERVICE .
ENTRANCE ' LEAD~IN WIRE ,
EQUIPMENT .

ANTENNA

DISCHARGE UNIT
TU EXTERNAL ANTENNA

POWER SERVICE GROUNDING TERMINALS OF PRODUCT
ELECTRODE sverM ._,,.
....J....J.............J... 0333.95,,th
BONDING JUMPER
szeea .
OPTIONAL ANTENNA enouNoiNG ELECTRODE
DRIVEN a FEET (2.44 in) mm THE EAFITH
IF neoumeo EN LOCAL copes. SEE NEc
FOR U.5.A. ONLY SECTION 91021 (i)

INTRODUCTION

A WORD FROM ROTEL

We at Rotel take this opportunity to thank you for choosing o'ur RT-QQOBX Tuner. Our commitment and dedication
to the design and manufacturing of high fidelity products for more than thirty years has guided our creation of
equipment with the highest level in sound reproduction. We are confident that you will enjoy this Rotel tuner, now
and for many years to come.

Please read this instruction manual thoroughly before you start using your tuner and keep it in a safe place for
future reference. Please keep the box in case the unit should need service or if you move. Thank you for
purchasing the RT-9QOBX tuner.

INTRODUCING THE RT-9QOBX TUNER

The Rotel RT-990BX is a FM only tuner designed for audiophiles who require few functions, but insist on the
purest sound.

The circuitry employs a highly sophisticated grounding technique to achieve a very low noise floor and improved
selectivity. The entire tuner circuitry is built on a main board to ensure common grounding between all sections,
except the power supply and front panel control sections, which are placed on separate boards to prevent hum and
noise interference.

All components are specially selected for their sound performance, longevity and close tolerances, and are
dimensioned to withstand wide temperature variations without deviation. Custom-made components, such as the
transformer and stereo decoder, provide optimum performance.

The entire high frequency tuner section is shielded in a copper enclosure to eliminate any possible interference
with other circuits. The audio outputs are buffered by high speed operational amplifiers, providing a low-
impedance high-current output, capable of driving any possible combination of interconnects and amplifiers.

The power switch incorporates a standby function, similar to the "off state of conventional equipment, but it
ensures that the tuners internal circuitry remains at a constant operating temperature. This provides the best
possible sound at any time without the need to wait until the unit is warmed-up after turning the power on.

Automatic tuning is incorporated to ease selection of broadcast stations, and sixteen presets are provided to store
your preferred stations for effortless recall. Other features include: automatic muting of weak stations, a
mono/stereo selector, an RF attenuator, a wide bandwidth selector, and a comprehensive display showing the
preset number, receiving frequency and signal strength. Display and control functions are minimized to prevent
any adverse effects on the received signal.

A remote control is included providing control of all basic functions as well as controlling the basic functions of our
RC-QQOBX control amplifier.

UNPACKING AND INSTALLING

CONTENTS OF PACKAGING BOX

RT-QQOBX tuner

RR-909 remote control unit and batteries

- Stereo interconnecting cable and indoor-antenna wire
300 ohm to 75 ohm adapter (North America only)

Instruction manual

If any of these items is missing, please contact your dealer immediately.

UNPACKING & LOCATION

Carefully unpack your tuner. We advise you to keep the packaging material for future use in case you move or
need to return the unit for servicing. Please ensure that you place the unit on a flat surface where it will be free
from excessive humidity, vibration, high temperatures and direct sunlight.

INTERFERENCE

Certain equipment, such as computers, may cause reception interference to your tuner. One or a combination of
the following measures may be required to eliminate this interference:

- Reorient or relocate the indoor-antenna, or use an outdoor-antenna instead.

- Increase the distance between the tuner and the interfering apparatus.

- Connect the tuner into a mains outlet on a circuit different to that which the interfering apparatus is
connected. Contact your dealer for further advice.