Instruction/ maintenance manual of the product CD-3720 Optimus
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Cat. No. 42-5077 OWNER’S MANU AL Please read be fore usin g th is e q u ipm en t . CD-3 720 Portable Compact Disc Player with 10 Seco nd D igi tal An ti-Sh ock Sys tem 42-5 07 7.
2 FEATURES Your Optim us CD-3720 P ortable Compact Disc Player uses the la test digital audio technol ogy to give y ou the clear sound of c ompact discs. You can connec t th e CD pla yer to your ho me a udio or au tosou nd system or connect a pair of st ereo headphone s f o r portable , private listening.
3 Built-In Ba ttery C harger — r echarges special rechargeabl e nickel- cadmium batteries inside the player when you use an AC or DC adap ter. 1-Bit DAC — u ses t he latest in digital-to-analog conv ersion circuitr y to accurately reproduce all sound level s with virtually no distortion.
4 Important: You ne ed a pair of stereo headpho nes, amplified speak ers, or a home audio or aut osound s ystem to use your CD pl ayer. Your local Ra- dioShack store carries a comple te line of headphones , spea kers, and au- dio systems.
5 FCC IN FORMATIO N This equ ipment com plies with the limits for a Class B digital device as specified in Part 15 of FCC Rules . These l imits provide reasonable pro- tection agai nst radio and TV interference in a residential area. Howev er, your eq uipment might c a use TV or radio inte r ference e ven when it is op- erating prope rly.
6 CONTENTS Pow erin g the CD P la y er .... ..... ..... .... ... .... ..... ... .... ... .... ..... .. ..... ..... .. ..... .. 8 Usin g Bat terie s ..... .. ..... ..... .. ..... .... ..... ..... ..... .. ..... .... ....... ..... ..... ..... .. .. 8 In stalli ng B atteri es .
7 Care and Mai ntenan ce .... ..... .. ..... ..... .. ..... ..... ....... .... ..... ..... .. ..... ..... ..... 32 CD Care T ips ..... .. ..... ..... .. ..... .... ..... ..... ..... .. ..... .... ... .... ... ..... .... ... .... . 33 Speci ficat ions .
8 POWERING THE CD PLAYER You can pow er your CD player fr om an y of thes e sourc es: • two AA alkaline bat teries • two special rechargeable AA nick el-cadmium batteries • two standard recharge.
9 Y ou cannot ch arge standard ni ckel-cadmium recha rgeable batteries inside the CD player ’s battery compartment , but you can charge them using an ex ternal battery charger s uch as Ca t. No. 23-133 (not sup- plied). Note: All types of nickel-cadm ium batte r i es come fully discha rged.
10 2. Place two AA bat teries in the compartment and on t op of the attached ribbon, as indicated b y the p olarity sym bols ( + and – ) m arked inside. 3. Close th e cover . When flashes, the s ound distorts, or the v o lume weakens , replace or recha r ge the batteries.
11 To charge s pecial nickel-cadm ium bat teries in the CD player, simply con- nect an AC or DC adapter to your CD pl a yer (see “Using AC Po wer” on Page 12 o r “Using Vehicle Battery Power” on Page 14). BA T T CHARGE on the front of the CD player lights while batteries are installed and charg- in g.
12 • Fully discharge the bat teries occasionally by p laying the CD player until it no longer plays. T hen fully recharge the batteries. This he lps maintain the batteries’ full charging capacity . • Important: T his CD player is cap able of u sing rechargeable nickel- cadmium batteries.
13 Follow these steps to connect an AC adapter to the CD pla yer. 1. Plug the A C adapter ’s 5. 5 m m ou ter diamet er/2.1 m m in ner di ame ter barrel plug into the cable so it reads + T IP . 2. Set the AC adapte r ’s voltage switch to 4.5V . 3. Connec t the AC adapter ’s ba r rel plug to the 4.
14 Usin g V ehi cle Batter y Pow er You can p ower your CD pl ayer from your v ehicle’s cigarette-lighter socket using an optional 4.5 volt DC adapter, such as Cat. No. 273-1801. Cautio n s: • Y ou m ust use a DC ada pter that supplies 4 .5 volts and de livers at least 550 mA of autom otive power .
15 2. Set the DC adapter ’s voltage switch to 4.5 volts. 3. Connec t t he DC adapter ’ s barrel plug t o the 4.5V jack on the ba ck of the CD player .
16 CONNECTIONS You can listen to your CD player by connect ing optional stereo head- phones or amplified speakers to t he CD player’s PHONES jack, or by con- necting a home audio or autosound system to the CD player’s LINE OUT jack.
17 Listen ing Safely To protec t your h earing, follow t hese guidel ines when you use e arphones or headphones . • Set t he volume to the lowest set ti n g before you begin listening. A fter you begin l istening, ad just the v olum e to a comfortabl e level.
18 CONNECTING AMPLIFIED SPEAKERS You can listen to your CD player through optional ampl if i ed speakers (such as Cat. No. 40-138 7). P lug the speaker cable’s 1 / 8 -inch (3.
19 CONNECTING TO AN AUTOSOUND SYSTEM You can listen to your CD player through you r autoso und system in one of the following ways: • I f yo ur autosound syst em has LINE IN jacks, connect the supp lied Y- cable’s 1 / 8 -inch (3.5-mm ) plug to t he CD p layer ’s LINE OUT jack.
20 • If your autosound system has a cassette deck, connect an optional CD-to-cassette adapter ’s plug (such as Cat. No . 12-1951) to t h e CD player ’ s PHONES jack. Then insert the adapte r’s other end into your cassette d eck just like a standard cas s ette.
21 OPERATION LOADI NG A CD Caution: To help prevent dust from entering the CD play er, alwa y s keep the CD compartm ent cover closed except to load or unl o ad CDs. 1. Slide HOLD in the direction o f the arrow marked n ext to HOLD . 2. Press PUSH OPEN and lift the CD c ompartment cover .
22 PLAYIN G A CD Warning: To protect your hearing if you are using earph ones or head- phones, set VOLUME to its lowest setting before you play a CD. Pr e ss PLA Y/P AUSE . T he CD player automatical ly turns on and 00 , th e to tal number of t r acks o n t he CD, and t he CD’ s pla ying t ime brie fl y a p - pear on the d isplay .
23 To temporarily stop play, press PLA Y/P AUSE . The current track’s elapsed time flashes. To resum e play, press PL A Y/P AUSE again. W hen the la st t rack finishes p laying, the CD st op s and 00 appears f o r a few seconds. Then the CD player automatically turns off .
24 DIGITA L ANTI-SHOCK SYSTEM Your CD player contains s pecial circuits to overcome so und skipping problems caused by s hock or vibra ti on. This means you can carry the CD player anywhe r e you go or use it in your vehicle . When you turn on the anti-shock system, the C D player continuou s ly saves 10 seconds of mu- sic in memory .
25 Note: T he CD pla yer consum es ext ra battery pow er when you use the anti-shock sy stem. When you use t he CD player in a stable l ocation, re- peated ly press DAS until the icon d isappears to conserve battery power.
26 During play, pres s to return to the beginn ing of the current track. Press twice to ret urn t o the begi nning of the pre vious track, then re- peatedly press to move through the previ ous tracks or to move through the next tracks. To m ove to the beginning of the n ex t track, press .
27 To beg in scanni ng, press PLA Y MODE . Intr appears . Th en press PLA Y/ PA U S E . T he first track numbe r and --:0 0 appear and int r o scan starts from the f irst track on the CD. To return to no rmal play, press PLA Y/P AUSE . The current track’s elapsed time appe ars.
28 To repeat al l tracks on a CD, repea tedly press REPEA T/ENTER unt il RE- PEAT appears. The CD player continuously replays the CD. To cancel repeat play, press REPEA T/ENTER un til RE PEAT disappears. RANDOM PL AY In random pl ay, the CD player plays all the t r a cks once in r a ndom order, then automa tically stops.
29 PROGRAMMED PLAY You can program up to 2 2 track s on a CD to play in any ord er you choo se, and you can program the same track to play more than once. Follo w these steps to program and play a sequence. 1. Press PLA Y/P AUSE to t urn on the CD p layer .
30 T ROUBLES HOO TING If your CD player is not working prope rly, follow these suggestions to se e if you can e liminate the problem. I f t hese s uggestions d o not work, con- tact you r local Rad ioShack s tore for assistance. Problem Po ssible Cause Su gg est i on The CD player does not work.
31 Sound from a CD skips (continu ed) Moist ure has condensed on the pickup lens. Wait 1 ho ur for t he mo is- ture to evap orate. Pro ble m Poss i bl e C aus e S ugg e st i on 42-5 07 7.
32 CARE AND MA INTENANCE Your Optim us CD-3720 Portable Compac t Disc Player is an exam ple of superior design and craft smanship. The fol lowing sug gestions will hel p you care for your CD player so you can enjoy it for years. Keep the CD player dry.
33 W ipe the CD player with a dam p cloth occasion ally to keep it looking ne w. Do not use hars h chemicals, c leaning sol- vents, or strong detergents to clean the CD pl ayer. Always kee p the charging terminals on the recharge able batteries c lean.
34 information. T o 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 f ocus.
35 SPEC IF ICAT IONS Frequenc y Res ponse ( ± 3 dB) . ........ ....... ..... ....... ....... ..... .... 20–2 0,000 Hz Line O utput .... ... .... ..... .. ..... ... .... ..... .. ..... ..... .. ..... .. ..... ..... .. ..... ..... .. ..... . 0.6 V Sam pling Frequency .
Radi oSh ack A Division of T andy Corporation Fort Worth, T exas 76102 8A8 Pri nted in Hong Kong Lim it ed O ne-Y ear War ranty This pr oduct i s wa rrant ed by RadioSh ack aga inst ma nufac turing de.
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If you have not bought Optimus CD-3720 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Optimus CD-3720 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Optimus CD-3720 you will learn all the available features of the product, as well as information on its operation. The information that you get Optimus CD-3720 will certainly help you make a decision on the purchase.
If you already are a holder of Optimus CD-3720, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Optimus CD-3720.
However, one of the most important roles played by the user manual is to help in solving problems with Optimus CD-3720. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Optimus CD-3720 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
