Optimus CD-3790 User Manual

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Portable Compact Disc Player

Cat. No. 42-5080

OWNER’S MANUAL

Please read before using this equipment.

CD-3790

with Digital Anti-Shock

ying

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FEATURES

Your Optimus CD-3790 Portable Compact Disc Player uses the latest digital audio technology to deliver the clean, crisp sound of compact discs. Y ou can connect the CD player to your home audio or autosound system, or connect a pair of stereo headphones for portable, private listening.

The CD player’s features include:

ital Anti-Shock System (DAS2)

—

rapidly scans 40 seconds of data from the CD and stores it in memory for uninterrupted play with no sound skip, even when the CD player is exposed to shocks or vibration. This makes this CD player excellent for use in your vehicle.

Pro

rammable Pla

— lets you program and play up to 24 tracks in any sequence you choose.

Extended (E-) Bass S

stem

— creates

a fuller bass sound.

Supplied CD-to-Cassette Adapter

—

lets you connect the CD player directly

to a cassette player in your vehicle.

Carr

Pouch

— lets you carry your CD player on a belt and reduces surface scratches.

Headphone Jack

— lets you connect your CD player to optional headphones or speakers.

Line Out Jack and Supplied Y-Cable

— make it easy to connect the CD player to your sound system’s low-level inputs.

1-Bit DAC

— uses the latest in digitalto-analog conversion circuitry to accurately reproduce all sound levels with virtually no distortion.

Automatic Search Music S (ASMS)

— lets you quickly locate and

stem

play any track on a CD.

ht-Times Oversampling with Digi-

tal Filterin

— improves the CD’s sound by multiplying the standard 44.1 kHz sample rate by eight and using a digital filter to reduce or el im inate di stortion.

Illuminated Buttons and Displa

—

when you operate the CD player with an AC or DC adapter, the buttons and display light up for easy viewing in the dark.

Optimus and RadioShack are registered trademarks used by Tandy Corporation.

Audible Search

— lets you rapidly play a CD in either direction to locate a desired section of a track.

Repeat Pla

— lets you automatically repeat a single track, an entire CD, or a programmed sequence.

Random Pla

— randomly selects and

plays tracks from the loaded CD player.

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Cue — lets you c ue a t rack for pl ay at a later time .

Intro Scan — scans and plays the first 10 seconds of each track, so you can find a specific track.

Auto Power On/Off — automatically turns on the CD player when you press

PLAY/PAUSE

press

, and turns it off when you

STOP/CLEAR

or 2 minutes after it finishes playing, to help preserve battery life.

Hold — prevents acc identally changing the CD player’s control settings during play and preserves battery life by locking most controls.

Resume — lets you resume listening to the track that was selected when you stopped playing a CD.

Three Power Sources — let you power your CD player from two standard or rechargeable nickel-cadmium AA batteries, your vehicle’s battery using the supplied DC adapter, or standard AC power using an optional AC adapter.

Important: You need a pair of stereo headphones, earphones, or amplified speakers, or a home audio or autosound system to use your CD player. Your local RadioShack store carries a complete line of headphones, earphones, speakers, and audio systems.

CDs that can be played on this CD player have this mark on them:

The CD player’s advanced technology makes it simple to operate. But, be sure you read this Owner’s Manual completely so you can take advantage of all its advanced features.

We recommend you record your CD player’s serial number here. The number is inside the CD player’s battery compartment.

Serial Number __________________

Power/Charging Jack — lets you charge nickel-cadmium batteries without removing them from the CD player.

Seven-Hour Battery Life — lets you play your CD player for up to seven hours on just two AA batteries.

5- or 3-Inch CD Compatible — lets you play either size CDs on your CD player.

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This CD player is made and tested to meet exacting safety standards. It meets FCC requirements and complies with safety performance standards of the U.S. Department of Health and Hum an Services.

Warnings:

• This CD player employs a laser light

beam. Only a qualified service person should remove the cover or attempt to service this device, due to possible eye injury.

• The use of controls, adjustments, or

procedures other than those specified herein might result in hazardous radiation exposure.

FCC INFORMATION

This equipment complies with the limits for a Class B digital device as specified in Part 15 of FCC Rules. These limits provide reasonable protection against radio and TV interference in a residential area. However, your equipment 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 receiving antenna

• Increase the distance between the equipment and the radio or TV

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

Consult your local Radio Shack store if the problem still exists.

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CONTENTS

Powering the CD Player ...... ........................ ................ ........................ ................ 6

Using Batterie s ............................ ....................... ................. ........................ .... 6

Recharging Nickel-Cadmium Batteries ..................................................... 7

Using Vehicle Battery Power ........................................................................... 8

Using AC Power .............................................................................................. 9

Connections ....................................................................................................... 10

Connecting Earphones/Headphones ............................................................ 10

Listening Safely ...................................................................................... 10

Traffic Safety ........................................................................................... 10

Connecting Amplified Speakers ......... ....................... ........................ ............ 11

Connecting to a Home Audio System ........................................................... 11

Connecting to an AutoSound System ........................................................... 11

Operation ............................................................................................................ 13

Loading a CD ................................................................................................ 13

Playing a CD ................................................................................................. 13

Viewing the Elapsed Time ...................................................................... 14

Turning E-Bass On and Off ........................................................................... 14

Audible Search .............................................................................................. 14

Automatic Search Music System (ASMS) ..................................................... 15

Digital Anti-Shock System (DAS

Pause/Cue ..................................................................................................... 15

Repeat Play ................................................................................................... 16

Random Play ................................................................................................. 16

Programmed Play .......................................................................................... 16

Intro Scan ...................................................................................................... 17

Resume ......................................................................................................... 18

Locking the Controls ...................................................................................... 18

) ................................................................. 15

Troubleshootin

Care and Maintenance ....................................................................................... 20

Replacing the DC Adapter’s Fuse ................................................................. 21

CD Care Tips ................................................................................................. 21

Specifications .................................................................................................... 22

................................................................................................. 19

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POWERING THE CD PLAYER

You can power your CD player from any of these sources:

• two AA alkaline batteries (not supplied)

• two rechargeable AA nickelcadmium batteries (not supplied)

• vehicle battery power using the supplied DC adapter

• standard AC power using an AC adapter (not supplied)

The CD player s enses whether or

Note:

not the batteries you install are rechargables, and turns on t he chargi ng c ircuit or disconnects the batteries accordingly.

USING BATTERIES

You can power your CD pla yer from t wo AA alkaline batteries (such as RadioShack Cat. No. 23-552) or two rechargeable AA nickel-cadmium batteries (such as Cat. No. 23-125).

Cautions

• Always use fresh, or freshly

charged, batteries of the required size and recommended type.

Follow these steps to install the batteries.

1. Press down on the b attery compartment cover and slide it in the direction of the arrow on the cover, then lift the cover.

Caution:

cover is attached to the CD player. Do not try to remove it.

2. Put two AA alkaline batteries or two AA nickel-cadmium batteries in the battery compartment, as indicated by the polarity symbols (+ and –) marked inside.

Note

with nickel-cadmium batteries, you need to charge them, either in an external battery charger (such as Cat. No. 23-134) or in the CD player (see “Recharging Nickel-Cadmium Batteries” on Page 7).

The battery compartment

: Before you use the CD player

• Do not mix old and new batteries, different types of batteries (standard, alkaline, or rechargeable nickel-cadmium), or rechargeable batteries of different capacities.

3. Close the battery compartment cover.

When flashes on the display, the sound distorts, or the volume weakens, replace or recharge the batteries.

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Cautions:

• If you will not be using the CD player with battery power for more than a month, or if y ou pl an t o use only AC or DC power, remove the batteries.

• Dispose of old batteries promptly and properly.

Recharging Nickel-Cadmium Batteries

If you connect the supplied DC adapter (see “Using Vehicle Battery Power” on Page 8) or an AC adapter (see “Using AC Power” on Page 9) to the CD player, you can set the CD player to charge nickel-cadmium batteries while they are inside the CD player’ s battery compartment.

Cautions:

• Use only the supplied DC adapter or an AC adapter that meets the specifications in “Using AC Power” on Page 9 to recharge the batteries in the CD player. Other adapters could damage your CD player or th e batteries.

• Do not use the CD player or open the CD compartment cover while you are charging nickel-cadmium batteries.

Follow these steps to charge nickelcadmium batteries in the CD player.

1. Connect an AC adapter or the supplied DC adapter to your CD player (see “Using AC Power” on Page 9 or “Using Vehicle Battery Power” on Page8).

2. With rechargeable batteries installed and the CD compartment cover closed, press

CHG

flashes on the display. Then

CHG CHG CHG

player starts to recharge the batteries.

It takes about 3 hours to charge new or fully discharged nickelcadmium batteries. Subsequent charges take 2–3 hours.

Note: During recharging, the auto power on/off feature is disabled.

3. When the batteries are fully charged, the CD player automatically stops charging them and turns off. Disconnect the AC or DC adapter.

appears and the CD

STOP/CLEAR

• Nickel-cadmium batteries charge more efficiently if the temperature i s above 40°F (4. 5°C) and below 90°F (32°C).

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Important: Your CD player is capable of using nickel-cadmium batteries. At the end of the batteries’ useful life, they must be recycled or disposed of properly. Contact your local, county, or state hazardous waste management authorities for information on recycling or disposal programs in your area. Some options that might be available are: municipal curbside collection, drop-off boxes at retailers such as your local RadioShack store, recycling collection centers, and mail-back programs.

USING V EHICLE BATTERY POWER

You can power the CD player from y our vehicle’s battery power with the supplied DC adapter.

Cautions:

• The supplied DC adapter supplies 6 volts and delivers at least 500 milliamps. Its center tip is set to positive, and its plug correctly fits the CD player’s adapter that does not meet these specifications could d ama ge t he CD player or the DC adapter.

DC IN 6V

jack. Using a DC

Follow these steps to connect the CD player to your vehicle’s battery power.

1. Insert the DC adapter’s barrel plug into the CD player’s

2. Make sure the DC adapter’s tip is screwed in tightly, then plug the DC adapter’s other end into your vehicle’s cigaret te- l ighter socket.

Note: If the CD player does not ope rate when you use the DC adapter, unplug the cord from the cigarette-lighter socket and clean any ashes or debris from the socket.

DC IN 6V

jack.

• When you finish using the CD player, always unplug the DC adapter from the cigarette-lighter socket before you disconnect it from your CD player.

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