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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 direction to locate
a desired section of a track.

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

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

Random Play  — randomly selects and plays tracks from the loaded CD.

Programmed Play — lets you program up to 22 tracks from the loaded
CD to play in any order you choose. 

Pause  — lets you temporarily stop play.

Hold  — 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

42-5077.fm  Page 3  Thursday, August 12, 1999  1:12 PM

Summary of Contents for CD-3720

Page 1: ...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 42 5077 fm Page 1 Thursday August 12 1999 1 12 PM ...

Page 2: ...ayer excellent for use in your vehicle 22 Track Programmable Memory lets you program and play up to 22 tracks in any sequence you choose Auto Power Off automatically turns the CD player off to help pre serve battery life Bass Boost System creates a fuller bass sound Long Battery Life you can operate the CD player up to 7 hours with fresh alkaline batteries Three Power Sources let you power your CD...

Page 3: ...ed section of a track Intro Scan scans and plays the first 10 seconds of each track so you can find a specific track Repeat Play lets you automatically repeat a single track an entire CD or a programmed sequence Random Play randomly selects and plays tracks from the loaded CD Programmed Play lets you program up to 22 tracks from the loaded CD to play in any order you choose Pause lets you temporar...

Page 4: ...compartment Serial Number __________________ This CD player is made and tested to meet exacting safety standards It meets FCC requirements and complies with safety performance stan dards of the U S Department of Health and Human 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 i...

Page 5: ...even when it is op erating 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 RadioShack store if the problem still exists You must use shielded i...

Page 6: ...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 Troubleshooting 30 42 5077 fm...

Page 7: ...7 Care and Maintenance 32 CD Care Tips 33 Specifications 35 42 5077 fm Page 7 Thursday August 12 1999 1 12 PM ...

Page 8: ... 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 also use the following types of rechargeable nickel cadmium batteries to power the CD player Two special AA rechargeable nickel cadmium batteries RSU No 11672508 available through your local RadioShack store Y...

Page 9: ...e 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 stan dard 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 i...

Page 10: ...with batteries for a month or more or if you plan to use only an AC or DC adapter remove the bat teries Batteries can leak chemicals that can destroy electronic parts Recharging Nickel Cadmium Batteries If you connect an AC or DC adapter to the CD player you can set the CD player to charge special nickel cadmium batteries while they are in side the battery compartment Caution Use only an AC adapte...

Page 11: ... the AC or DC adapter Charging Tips Facts It takes about 15 hours to charge new or fully discharged nickel cadmium batteries special or standard 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 bat teries However this will cause the batteries to recharge more slowly Under normal usage condition...

Page 12: ...oxes at retailers such as your local RadioShack store recycling collection centers and mail back programs Using AC Power You can power the CD player from a standard AC outlet using an optional AC adapter such as Cat No 273 1664 Cautions You must use an AC adapter that supplies 4 5 volts and delivers at least 550 mA Its center tip must be set to positive and its plug must fit the CD player s 4 5V j...

Page 13: ...layer 4 Plug the AC adapter s other end into a standard AC outlet Caution The CD player automatically disconnects battery power when you connect an AC adapter unless you are using special rechargeable nickel cadmium batteries Even though the CD player automatically does this remove the special nickel cadmium batteries to prevent overcharg ing if you plan to use the CD player with AC power for an e...

Page 14: ...player s 4 5V jack Using an adapter that does not meet these specifications could damage the CD player or the adapter Always plug the DC adapter into the CD player before you plug it into the cigarette lighter socket Always unplug the DC adapter from the cigarette lighter socket before you unplug it from the CD player Follow these steps to connect a DC adapter to the CD player 1 Plug the DC adapte...

Page 15: ...e back of the CD player 4 Plug the DC adapter s other end into your vehicle s cigarette lighter socket Note If the CD player does not operate when you use the DC adapter unplug the cord from the cigarette lighter socket and clean any ashes or debris from the socket 42 5077 fm Page 15 Thursday August 12 1999 1 12 PM ...

Page 16: ...ot match the plugs on the sup plied Y cable check with your local RadioShack store for the proper ca ble adapter You can mount your CD player in your car using a mounting bracket Your local RadioShack store has a complete line of mounting kits CONNECTING AN EARPHONE HEADPHONES For private listening plug a pair of stereo earphones or headphones with a 1 8 inch 3 5 mm plug into the PHONES jack on th...

Page 17: ...s 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 dis comfort might still damage your hearing Traffic Safety Do not wear earphones or headphones while operating a motor vehicle or riding a bicycle This can create a traffic hazard and could be illegal in some areas Even though some earphones or headphones let you hear so...

Page 18: ...ONES jack CONNECTING TO A HOME AUDIO SYSTEM You can listen to your CD player through your home audio system s am plifier receiver and full size speakers Connect the supplied Y cable s 1 8 inch 3 5 mm plug to the CD player s LINE OUT jack Then connect the Y cable s phono plugs to your audio system s left and right CD AUX or TV audio input jacks 42 5077 fm Page 18 Thursday August 12 1999 1 12 PM ...

Page 19: ... mm plug to the CD player s LINE OUT jack Then connect the Y cable s phono plugs to your autosound system s LINE IN input jacks If your autosound system has a CD input jack connect one end of a 1 8 inch 3 5 mm stereo patch cable such as Cat No 42 2387 not supplied to the CD player s LINE OUT jack Then connect the other end to your autosound system s CD INPUT jack 42 5077 fm Page 19 Thursday August...

Page 20: ...ck connect an optional CD to cassette adapter s plug such as Cat No 12 1951 to the CD player s PHONES jack Then insert the adapter s other end into your cassette deck just like a standard cassette 42 5077 fm Page 20 Thursday August 12 1999 1 12 PM ...

Page 21: ...CDs 1 Slide HOLD in the direction of the arrow marked next to HOLD 2 Press PUSH OPEN and lift the CD compartment cover 3 Carefully place a CD label side up over the center hub inside the CD compartment and gently press the center of the CD until it snaps down onto the hub 4 Close the compartment cover 42 5077 fm Page 21 Thursday August 12 1999 1 12 PM ...

Page 22: ...display Then the current track number and the elapsed time of the current track appear and Track 1 begins to play If you connected earphones headphones or amplified speakers to the CD player s PHONES jack turn VOLUME on the CD player to adjust the volume If you connected the CD player to your home audio system or autosound system using the LINE OUT jack you must use the home audio or auto sound sy...

Page 23: ...en the last track finishes playing the CD stops and 00 appears for a few seconds Then the CD player automatically turns off To turn it off sooner press STOP TURNING E BASS ON AND OFF To enhance the bass sound slide E BASS to ON To turn bass enhance ment off slide E BASS to OFF 42 5077 fm Page 23 Thursday August 12 1999 1 12 PM ...

Page 24: ...vibration that would normally make a track skip or pause the CD player plays directly from memory To turn on the anti shock system press DAS If the CD player is playing a CD the sound briefly stops and an icon appears under MEMO After a few seconds the CD player saves music in memory adding one indicator inside the icon for each second of music saved The icon looks like this when it is full To tur...

Page 25: ...ion of the arrow marked next to HOLD to lock all controls ex cept PUSH OPEN VOLUME and HOLD itself To unlock the controls slide HOLD in the opposite direction AUTOMATIC SEARCH MUSIC SYSTEM ASMS You can use ASMS before or during regular or programmed play see Programmed Play on Page 29 to quickly locate any track on a CD While the CD is temporarily stopped repeatedly press or to move backward or fo...

Page 26: ...ly and you hear the music at a high speed and low volume The current track s elapsed time appears on the display Release the button to resume normal play Note If you hold down while the last track is playing audible search starts again at the beginning of that same track If you hold down during the first track audible search stops at the beginning of Track 1 INTRO SCAN You can set the stereo to sc...

Page 27: ...elapsed time appears Notes Intro scan plays the tracks in the programmed order if you have pro grammed a sequence see Programmed Play on Page 29 You can use and to skip through the tracks during intro scan REPEAT PLAY You can repeat a single track or all tracks on the CD To repeat a single track press REPEAT ENTER REPEAT flashes The CD player continuously replays the track 42 5077 fm Page 27 Thurs...

Page 28: ...CD player plays all the tracks once in random order then automatically stops To start random play at any time repeatedly press PLAY MODE until RND appears Note If you select random play during programmed play the CD player stops the programmed sequence and starts random play of all tracks in the sequence To cancel random play repeatedly press PLAY MODE so RND disappears 42 5077 fm Page 28 Thursday...

Page 29: ... display the number of the first track you want to program 4 Press REPEAT ENTER to store the selected track number and go to the next selection The selection number advances by one and the track number returns to 00 5 Repeat Steps 3 and 4 for each track you want to program up to 22 tracks 6 To play the programmed sequence press PLAY PAUSE PGM appears and the first track in the sequence plays 7 To ...

Page 30: ...e sure the batteries are not weak or make sure an AC adapter or DC adapter is properly con nected A CD is loaded but the CD player does not start The CD is loaded upside down Reload the CD label side up The CD is dirty or defec tive Clean the CD and reload it or try a different CD See CD Care Tips on Page 33 Sound from a CD skips The CD is dirty or defec tive Clean the CD and reload it or try a di...

Page 31: ...1 Sound from a CD skips continued Moisture has condensed on the pickup lens Wait 1 hour for the mois ture to evaporate Problem Possible Cause Suggestion 42 5077 fm Page 31 Thursday August 12 1999 1 12 PM ...

Page 32: ... player only in normal temperature en vironments Temperature extremes can shorten the life of electronic devices damage batteries and distort or melt plastic parts Keep the CD player away from dust and dirt which can cause premature wear of parts Handle the CD player gently and carefully Dropping it can damage circuit boards and cases and can cause the CD player to work improperly Use only fresh b...

Page 33: ...local RadioShack store for as sistance CD CARE TIPS Do not place anything but a CD in the disc tray Doing so can damage the drive mechanism During playback a severe shock or jolt could make the CD s rotation speed change suddenly and produce some noise This is not a mal function A scratch on the CD s surface can make the CD skip or stop playing If the CD gets scratched use Scratch n Fix Cat No 42 ...

Page 34: ...34 information To clean the CD use a CD cleaner kit such as Cat No 42 226 Keep CDs dry A water drop can act as a lens and affect the laser beam focus 42 5077 fm Page 34 Thursday August 12 1999 1 12 PM ...

Page 35: ...ied Optional AC Adapter 273 1664 or Optional DC Adapter 273 1801 Power Consumption 8 W Battery Life EIAJ Method 7 Hours Dimensions HWD 19 64 523 64 6 11 64 Inches 29 136 5 157 mm Weight without batteries 9 7 oz 275 g Weight with batteries 11 5 oz 326 g Included Accessory Y Cable Specifications are typical individual units might vary Specifications are subject to change and improvement without noti...

Page 36: ...warranty period take the product and the RadioShack sales receipt as proof of purchase date to any RadioShack store RadioShack will at its option un less otherwise provided by law a correct the defect by product repair without charge for parts and labor b replace the product with one of the same or similar design or c refund the purchase price All replaced parts and products and products on which ...

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