Optimus CD-3720 User Manual

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Cat. No. 42-5077

OWNER’S MANUAL

Please read before using this equipment.

CD-3720

Portable Compact Disc Player

with 10 Second Digital Anti-Shock System

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FEATURES

Your Optimus CD-3720 Portable Compact Disc Player uses the latest digital audio technology to give you the clear sound of compact discs. You can connect the CD player to your ho me a udio or au tosou nd system or connect a pair of stereo headphones for portable, private listening.

The CD player’s features include:

per Digital Anti-Shock System (Hyper DAS2)

— rapidly scans 10 seconds of data from t he CD and stores it in memory for uninterrupte d 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.

22-Track Pro

rammable Memory

— lets you program and play up to

22 tracks in any sequence you choose.

Auto Powe r Off

— automatically turns the CD player off, to help pre-

serve battery life.

Bass Boost S

Lon

Battery Life

— creates a fuller bass sound.

stem

— you can operate the CD player up to 7 hours with

fresh alkaline batteries.

Three Pow er Sources

— let you power your CD player from two standard or rechargeable nickel-cadmium AA batteries (not suppli ed), standard AC power using an optional AC adapte r, or your vehicle’s battery using an optional DC adapter.

1998 Tandy Corporation.

Optimus and RadioShack are registered trademarks used by Tandy Corporation.

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Built-In Battery Charger

— recharges special rechargeable nickel-

cadmium batteries inside the player when you use an AC or DC adapter.

1-Bit DAC

— uses the latest in digital-to-analog conversion circuitry to

accurately reproduce all sound levels with virtually no distortion.

Automatic Search Music System (ASMS)

— lets you quickly locate

and play any track on a CD.

Audible Search

— lets you rapidly play a CD in either direct ion to lo cate

a desired section of a track.

Intro Scan

— scans and plays the f irst 10 second s o f each trac k, so you

can find a specific track.

Repeat Play

— lets you automatically repeat a single track, an entire CD,

or a programmed sequence.

Random P l ay Programmed Play

— randomly selects and plays tracks from the loaded CD.

— lets you program up to 22 tracks from the lo aded

CD to play in any order you choose.

Pause Hold

— le ts you temporarily stop play.

— helps prevent accidentally changing the CD player’s settings and preserves battery life by locking most controls when you turn off the CD player.

5- or 3-Inch CD Compatible

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Important:

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

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

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

Serial Number __________________

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

Warnings:

• This CD player employs a laser light beam. Only a qual ified 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.

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FCC INFORMATION

This equipment com plies with the limits for a Clas s B digital device as specified in Part 15 of tection against radio and TV interference in a res idential area. However, your equipment might cause TV or radio interference e ven 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 equipme nt and the

radio or TV. Consult your local RadioShack store if the problem still exists. You must use shielded interface cables with this equipment.

FCC Rules

. These limits provide reasonable pro-

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CONTENTS

Powering the CD Player ...................................................................... 8

Using Batteries ................................................................................ 8

Installing Batteries ..................................................................... 9

Recharging Nickel-Cadmium Batteries ................................... 10

Using AC Power ...................................................................... 12

Using Vehicle Battery Power ................................................... 14

Connections ....................................................................................... 16

Connecting an Earphone/Headphones ......................................... 16

Listening Safely ....................................................................... 17

Traffic Safety ........................................................................... 17

Connecting Amplified Speakers . ................................................... 18

Connecting to a Home Audio System ............................................ 18

Connecting to an Autosound System ............................................ 19

Operation ............................ ................. ......... ................. ................ ..... 21

Loading a CD ................................................................................. 21

Playing a CD .................................................................................. 22

Turning E-Bass On and Off ........................................................... 23

Digital Anti-Shock System ............................................................. 24

Locking the Controls ...................................................................... 25

Automatic Search Music System (ASMS) ..................................... 25

Audible Search .............................................................................. 26

Intro Scan ...................................................................................... 26

Repeat Play ................................................................................... 27

Random Play ................................................................................. 28

Programmed Play .......................................................................... 28

Troubleshootin

.......... ................. ......... ................. ................ .......... .. 30

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Care and Maintenance ....................................................................... 32

CD Care Tips ................................................................................. 33

Specifications .................................................................................... 35

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POWERING THE CD PLAYER

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

• two AA alkaline batteries

• two special rechargeable AA nickel-cadmium batteries

• two standard rechargeable AA nickel-cadmium batteries

• vehicle battery power using an optional DC adapter

• standard AC power using an optional AC adapter Connecting an AC or DC adapter to the CD player when non-

Note:

rechargeable batteries are installed disconnects the batteries.

USING BATTERIES

You can power the CD player from two AA alkaline batteries. For the best performance and longest life, we recommend alkaline batteries such as RadioShack Cat. No. 23-557. You can a ls o use th e followi n g t ypes o f recharg eable nickel-cadm ium batteries to power the CD player:

•

Two special AA rechar

11672508, available through your local RadioShack store). You can use an AC o r DC adapter to recharge these bat teries while

they are installed in the battery compartment.

•

Two standard AA rechar

as Cat. No. 23-125).

eable nickel-cadmium batteries

(RSU No.

(such

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You cannot charge standard ni ckel-cadmium rechargeable batteries inside the CD player’s battery compartment, but you can charge them using an external battery charger such as Cat. No. 23-133 (not supplied).

All types of nickel-cadmium batteries come fully discharged. Be

Note:

sure to fully charge the batteries before you use them the first time.

Installing Batteries

Cautions:

• Use only fresh batteries of the required size and recommended type.

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

Follow these steps to install the batteries.

1. Slide the battery compartment cover in the direction of the arrow, then gently pull up on the cover to open it.

Caution:

The battery compartment cover is attached to the CD

player. Do not try to remove it.

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2. Place two AA batteries in the compartment and on top of the attached ribbon, as indicated by the polarity symbols (+ and –) marked inside.

3. Close the cover.

When flashes, the sound distorts, or the volume weakens, replace

BATT

or recharge the batteries.

Cautions:

• Dispose of old batteries promptly and properly. Do not burn or bury them.

• Always remove or recharge old o r weak batteries. Batt eries can leak chemicals that can destroy electronic parts.

• If you do not plan to use the CD player with batteries for a month or more, or if you plan to use only an AC or DC adapter, remove the batteries. Batteries can leak chemicals that can destroy electronic parts.

Recharging Nickel-Cadmium Batteries

If you connect an AC or DC adapte r to the CD player, you can set the CD player to charge special nickel-cadmium batteries while they are inside the battery compartment.

Caution:

tions in “Using AC Power” on Page 12 or “Using Vehicle Battery Power” on Page 14 to recharge the batteries in the CD player. Other adapters could damage your CD player or the batteries.

Use only an AC adapter or DC adapter that meets the specifica-

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To charge special nickel-cadmium bat teries in the CD player, simply connect an AC or DC adapter to your CD player (see “Using AC Power” on Page 12 or “Using Vehicle Battery Po wer” on Page 14). BATT CHARGE on the front of the CD player lights while batteries are installed and charging.

4.5V

550mA

4.5V

When the batteries are fully charged, disconnect the AC or DC adapter.

Charging Tips/Facts

• It takes about 15 hours to charge new or fully discharged nickelcadmium batteries (special or st andard) in the CD player while it is not being used to play CDs. Subsequent charges take 12–15 hours.

• You can play a CD while recharging the special nickel-cadmium batteries. However, this will cause the batteries to recharge more slowly.

• Under normal usage conditions, nickel-cadmium batteries can be recharged about 500 times.

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