Optimus SYSTEM 747 User Manual

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Mini Stereo Component System

Cat. No. 13-1295A

OWNER’S MANUAL

Please read before using this equipment.

Sys t em 747

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FEATURES

Your Optimus System 747 Mini Stereo
Component System o ffers all the ver­satile features you need for excellent
stereo sound and entertainment, all in
one compact package.

The system includes a top-loading 3­disc carousel CD player with 32-trac k
programmable memory, an AM/FM
stereo tuner, a cassette player with
auto-stop, and two 2-way speakers
with 5-inch woofers and piezo tweet­ers. Its extended bass system lets you
hear powerful, heavy bass while lis­tening to the radio, a CD, or a cassette
tape.

The system’s features include:

CD Player

æ lets you

er

— im-

Eight-Times Oversamplin

proves the CD’s sound by multiplying
the standard 44.1 kHz sampling rate
by eight and using a digital filter to re­duce or eliminate high-frequency dis­tortion.

1-Bit DAC

to-analog conversion circuitry to accu­rately reproduce all sound levels w ith
virtually no distortion.

Automatic CD Chan

load and play up to three CDs.

Automatic Skip

cate and play any track on the loaded
CDs.

— uses the latest in digital-

æ

lets you quickly lo-

æ

Audible Search

cate a particular section of a track
while it is playing.

Repeat Pla

all tracks on a single CD, all CDs in
the CD compartment, or a pro­grammed sequence.

Random Pla

CD’s tracks in random order.

Pro

rammable Pla

gram up to 32 selections (tracks or
CDs) to play in any order you choose.

æ

lets you quickly lo-

repeats a single track,

plays all the loaded

æ

— lets you pro-

Cassette Player

Multiple Source Recordin

you record onto a cass ette tape from
either the CD player or the radio.

—

Auto-Stop

tape-handling parts by automatically
stopping the tape when it reaches the
end.

Important:

discs and prerecorded tapes is copy­righted. Unauthorized duplication of
copyrighted material is a violation of
the copyright laws of most countries
and such duplication may result in
fines and/or imprisonment. Note, how­ever, that in the United States, it is not
a violation of U.S. copyright laws for a
consumer to use an audio recording
device to duplicate musical recordi ngs
for noncommercial (personal) use.

protects the tape and

Most material on com pact

— lets

© 1997 Tandy Corporation.

RadioShack and Optimus are registered trademarks used by Tandy Corporation.

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All Rights Reserv ed .

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Compact discs that you
can play on your sys­tem’s CD player have
this mark on them:

We recommend you record your sys­tem’s serial number here. The number
is on the back panel.

Serial Number: ________________

Warning: To prevent fire or s hock
hazard, do not expose this prod­uct to rain or moisture.

CAUTION

RISK OF ELECTRIC SHOCK.

DO NOT OPEN.

CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO US ER-SERVICE­ABLE PARTS INSIDE. REFER SERVIC­ING TO QUALIFIED PERSONNEL.

This sym bol is in te nd ed to a le rt yo u
to the pr e s en ce of uninsu la ted dan­gerous voltage within the product’s
enclos u re t h at m ig ht b e of s ufficient
magnitude to constitute a risk of
electric shock. Do not open the
product’s case.

This symbol is intended to inform
you that important operating and

!

maintenance instructions are in­cluded in th e l itera ture a ccomp an y­ing this product.

!

The graphical symbols with supple­mental markings are located on the
back of the system.

Warning: This system uses a laser
light beam. Only a qualified service
person should remove the cover or at­tempt to service this device, due to
possible eye injury.

Warning: The use of controls, adjust­ments, or procedures other than those
specified herein may result in hazard­ous radiation exposure.

FCC INFORMATION

This system complies with the limits
for a Class B digital device as speci­fied in Part 15 of
limits provide reasonable protection
against TV or radio interference in a
residential area. However, your sys­tem might cause TV or radio interfer­ence even when it is operating
properly.

To eliminate interference, you can try
one or more of the following corrective
measures.

• Reorient or relocate the TV or ra­dio’s receiving antenna.

• Increase the distance between the
system and the TV or radio.

• Use outlets on different electrical
circuits for the system and the TV
or radio.

Consult your local RadioShack store if
the problem still exists.

FCC Rules

. These

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CONTENTS

Preparation ........................................................................................................... 5

Connecting the Speakers ................................................................................ 5

Connecting the FM Antenna ............................................................................ 5

Connecting to Power ....................................................................................... 5

Using Headphones .......................................................................................... 6

Listening Safely ......................................................................................... 6

Basic Operation ................................................................................................... 7

Tuner Operation ................................................................................................... 8

CD Pla

Cassette Deck Operation . ................................................................................. 15

er Operation ............................................................................................ 9

Loading a CD ................................................................................................... 9

Playing a CD .................................................................................................... 9

Selecting Another CD .................................................................................... 10

Automatic Skip ............................................................................................... 10

Audible Search .............................................................................................. 11

Random Play ................................................................................................. 11

Repeat Play ................................................................................................... 12

Programmed Play .......................................................................................... 12

Programming and Playing a Sequence of Tracks ................................... 12

Reviewing the Programmed Sequence .................................. ....... ....... .. 13

Erasing the Programmed Sequence ....................................................... 13

CD Care Tips ................................................................................................. 13

Loading a Cassette Tape ............................................................................... 15

Playing a Cassette Tape ................................................................................ 15

Recording on a Cassette Ta pe ...................................................................... 16

Recording from a CD .............................................................................. 16

Recording from the Tuner ....................................................................... 17

Tape Care Tips .............................................................................................. 17

Preventing Accidental Erasure ................................................................ 17

Erasing a Cassette Tape ......................................................................... 18

Restoring Tape Tension and Sound Quality ............................................ 18

Care and Maintenance ....................................................................................... 19

Cleaning the Tape Handling Parts ................................................................. 20

Specifications ..................................................................................................... 21

4

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PREPARATION

Complete all other connections

Note:

before connecting the system to AC
power and turning it on.

CONNECTING THE
SPEAKERS

show SPEAKER terminal
on back of system

1. Press the red speaker terminal tab
labeled
back of the system, put the
stripped end of the right speak er ’s
striped wire into the t erminal, then
release the tab.

2. Press the black speaker terminal
tab labeled
back of the system, put the
stripped end of the right speak er ’s
other wire into the terminal, then
release the tab.

3. Repeat Steps 1 and 2 to connect
the left speaker to the

+

SPEAKER R

SPEAKER R

-

and

terminals.

+

on the

-

on the

SPEAKER L

CONNECTING THE FM
ANTENNA

Attach the supplied FM antenna t o the
300-ohm
back of the system.

Note:

antenna, you can use a signal splitter
with a 300-ohm output to connect your
stereo system and TV set to the same
antenna. Your local R adioShack st ore
has a wide selection of antennas, con­nectors, and splitters.

FM ANTENNA

show FM ANTENNA
terminal

If you have an outside VHF TV

terminal on the

CONNECTING TO
POWER

After you complete all connections,
plug the music system’s power cord
into a standard AC outlet. STAND­BY lights.

show STANDBY indicator
location

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Warning: To prevent electric shock,
the power cord plug’s blades are po­larized and fit a polarized AC outlet
only one way. If you have difficulty in­serting the plug, do not force it. Turn it
over and reinsert it.

USING HEADPHONES

You can use headphones (not sup­plied) to listen in privacy. Insert the
headphones’
into the

show

1

/8-inch (3.5 mm) plug

jack.

location

Listening Safely

To protect your hearing, follow these
guidelines when you use headphones.

• Do not listen at extremely high
volume levels. Extended high­volume listening can lead to per­manent hearing loss.

• Set the volume to the lowest set­ting before you begin listening. Af­ter you begin listening, adjust the
volume to a comfortable level.

• Once you set the volume, do not
increase it. Over time, your ears
adapt to the volume level, so a
volume level that does not cause
discomfort might still damage your
hearing.

Notes:

• Your local RadioShack store sells
a wide selection of headphones.

• Connecting headphones automat­ically disconnects the speakers.

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BASIC OPERATION

Warning:

tate

To protect your hearing, ro-

VOLUME

to the lowest sound level

before you turn on the system.
Follow these steps to operate your

system.

1. Set

FUNCTION

CD

. POWER ON lig h ts.

TAPE, TUNER

to

, or

show FUNCTION
switch location

2. If you selected

TUNER

, see “Tuner
Operation” on Page 8 for how to
select a station.

If you selected

TA PE

or

CD

, see
“Cassette Deck Operation” on
Page 15 or “CD Player Operation”
on Page 9 for how to play a cas­sette tape or a CD.

4. Slide

STEREO WIDE

to ON

the sound equally from the left
and right speakers.

show STEREO WIDE
location

5. Slide

E-BASS

to

ON

to emphasize
bass sounds. To return to normal
bass sounds, slide it to

OFF

show E-BASS
location

6. To turn off the system, slide
to

STANDBY

. STANDBY

TION

lights.

to hear

.

FUNC-

3. Adjust
listening level.

show VOLUME
location

VOLUME

to a comfortable

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TUNER OPERATION

1. Slide

FUNCTION

to

TUNER

.

show FUNCTION
set to TUNER

Note:

When you select
the sy stem auto matica lly tune s to
the station that was playing when
the system was turned off or when
it was last set to

2. Set

BAND

TUNER

.

to AM or FM to tune to

AM or FM radio stations.

show BAND set to FM

TUNER

3. Use

FM MONO/STEREO

to select

monaural or stereo sound.

show FM MONO/STEREO
set to STEREO

,

• Slide

FM MONO/STERO

REO

to select stereo sound. FM

to

STE-

STEREO lights when the tuner
receives an FM broadcast in
stereo.

• If FM stereo reception is noisy,
slide

MONO

FM MONO/STERO

to

to select monaural
sound. The sound is no longer
in stereo, but reception should
improve.

4. Rotate

TUNING

to select the de-

sired station.

Notes:

• The system uses a bu ilt-in fer­rite antenna for AM reception.
For the best AM reception, re­position the system.

• For the best FM reception, see
“Connecting the FM Antenna”
on Page 5.

8

show TUNING
location

5. Adjust the volume and set

STEREO WIDE

and

for th e desi red

sound.

E-BASS