Instruction/ maintenance manual of the product 744 Optimus
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Cat. No. 13-1291 OWNER’S MANU AL Plea se read before using this equipment . S y s t em 74 4 Mini Stereo C omponen t S ystem 13-1 29 1.fm Page 1 We dne sda y, Jul y 14 , 1 999 6:29 PM.
2 Warning : To prev ent fire or shock haz- ard, do not expo se t his p roduc t to rain or moisture. This sy m bo l is in te nd ed to a le rt yo u to the pr e s en ce of un ins u la ted da n- ger o us vo lt age wi th in t h e pr oduc t ’s encl os u r e th at m ig ht b e of s uf fic ie nt mag nit ud e to co nsti tu te a ris k of ele ct ric sh ock.
3 FEA TURES Your Optim us System 744 Min i Stereo Component System offers all of the features you need for excellent stereo sound and entertainm ent in one at- tr a cti ve pack age.
4 STEREO TUNER Dig ital S ynth esi zed Tu ning — el imi- nates tuning drift by locking the tun er on the selected frequenc y. Preset T uning Memori es — let y ou store and easily recall up to 24 of your favorite AM and FM radio stations.
5 CONTENTS Prep arati o n .... .. ..... .. ..... ..... .... ... .... ..... ..... ....... ..... .... ..... ..... ..... .... ... .... ..... ..... .. ..... ..... 7 Connecting Speakers ........... ..................... .. ............ ....................
6 Disc Scan ....... .... ..... ..... ..... .... ..... .. ..... ..... ..... .. ..... .... ..... ....... ..... ..... ..... .... .. 25 Pr ogram med Pla y .. .... ..... ..... .. ..... ..... .... ... ..... .... ..... .. ..... ..... ..... ....... .... .....
7 PREP ARA T ION Cautio ns: • Do no t connect the syst em t o AC power until you complete the speaker and antenna con nec- tions. • Be sure to follow all th e instruc- tions in the e nclosed “Safet y Instructions” sheet. CONNECTING SPEAKERS Cautio ns: • Never operate the s yst em without first connec ting speak ers .
8 Note: Use on ly 8-watt speak ers w it h an imp edance of 8 oh ms. A sele ction of speakers is available at your local RadioShack store. CHOOS ING A LOCA T ION FOR YOUR SPEAKERS For the best sound quality, place the front s peakers on each side of the system, at equal distanc es from the syste m.
9 2. Uncoil the loop ant enna’s braided wire. 3. Flip open the pair of terminal tabs ma r ke d AM LOOP o n the back of the system , then insert the loop antenna’s bare wi res into the ter- minals. T hen p ush the tabs in the opposite direction to lock them.
10 CONNECTING AN ADDITION AL AUDIO SOURCE If you have a VCR or other equipm ent, such as a cam corder or a TV that has line-level au dio outputs, yo u can play the sound through your s ystem . Use a cable with t wo ph ono jacks t o connect the source’s left and right audio out put jacks to the VCR /AUX L and R ja cks on the back of the system.
11 2. Insert the b atteries into the com - partment as indicate d by the polarity symb ols (+ and –) ma rked insid e. 3. Replace the cover . Cautio n: Alway s dispose of old bat- teries promptly and properly; do not bury or burn th em. Notes: • I f you will not be u sing the remote control for a month or m ore, remove t he bat teri es.
12 BASIC O PERA TION SYSTEM DISPL A YS The syst em (upper) display shows in- formation about many of the s ystem’ s functions. The CD (lower) di splay shows in formation about the s yst em’s CD functions.
13 Notes: • When you tu rn on the system, it automatical ly selects the same function that was selec ted when you turned it of f . • If you choose another function (for example, TA P E ) whil e play - ing a CD, the s yst em autom ati- cally stops playing the CD and selects that function.
14 USING T HE PRESET GRAPHIC EQUALIZER The system has preset graphic equal- izer settings to let you v a ry the bal - ance of sound produced o ver the se three frequenci es: • 100 Hz •1 k H z • 10 kHz These settings are des igned to gi ve you the best sound for jazz , pop, and classi cal m usic.
15 USING THE TUNE R 1. I f ne ce ss ar y , p r es s POWER . 2. Press TUNER . The currently se- lected b and ( AM , FM1 , or FM2 ), frequency number , and MHz or kHz app ears on the syst em dis- play . 3. T une to AM or FM r a dio stations using manua l, automatic, o r p re- set tuning.
16 3. Repeatedly press TUNING DOWN or UP on t he system to tune down or up the selec ted band . T o quickly tune down o r up the band, press and hold d own the button. AUTOMA TIC TUNING Follow these steps t o tune to the next higher or lower st a tio n with a strong signal.
17 4. Repeat Steps 1–3 to store up to eight stations each in AM , FM1 , and FM2 . Notes: • Y ou cann ot clear a s tation from memory , bu t you can store a new one in its pl a ce. • When power is disconnec ted or interrupted for more than a week, th e syste m loses all of its memory settings.
18 USING THE CD CHANGER The sy stem lets you lo ad up t o 21 CDs at once and gives y ou many op- tions to control the way it plays them. Cautio ns: • T o help prevent dus t from entering the system, always keep t he CD changer ’s door cl osed except when loading or unloading CD s.
19 5. Press EJECT/LOAD on the f ront of the system behind the CD changer ’s door . OPEN ap pears on the CD display , and the s elected disc tray slides o ut. 6. T o load a CD, gently p l ace i t onto the disc tray , label side up. Warnin g s: • T o avoid personal in jury , do not allow young children to op erate the system unat tended.
20 9. Press DISC CHEC K o n the front of the sy stem. T he s ystem se lects ea ch CD t ray i n th e CD change r and c hec ks it for a C D. If th ere is a C D in t he t ray , oo ap pear s on th e CD di sp lay nex t to the d is c number . If there is no CD in the tray , -- appears on t he CD dis- play next to the disc n umber instead.
21 SINGLE D ISC PLAY MO DE — In th is mod e, th e CD chan ger play s all tra cks of a s ingle loade d CD , and 1 DI SC appe ars on t he CD di spl ay . Pl aybac k begi ns with the first track of the selec ted CD and co ntinu e s to th e end of the l as t track on the CD .
22 Disp laying Info r matio n A bout CDs The elapsed time of the current track (in minutes and se conds) aut oma tical- ly appears on t he CD display as a CD plays. To displ ay additional inform a- tion about the current CD, repea tedly press TIME MODE o n the syst em or TIME on the remote cont rol.
23 • If you reach th e beginni ng of the current CD while pressing and holding down SKIP/SEARCH on the system , the CD changer plays from T rack 1 of the current CD af ter y ou release t he button. Ra nd om Pla y During random play, the CD chang er randomly selects and pl ays all t racks.
24 To select a repeat option, repeatedly press REPEA T on t he rem ot e c o nt ro l . Depending on th e mode the system is set t o, the syst em displa ys the fol low- ing options e ach time you press RE- PEA T : Normal p la y mode: • REPE AT 1 (track) • REPE AT AL L DI SC • ALL DI SC — Cancel repeat option an d resume norm al play mode.
25 Notes: • The play m ode must be set to ALL DISC or 1 DISC to use music scan. S ee “Sele cting and Playing a CD” on Page 20. • If you pres s MUSIC SCAN or M.
26 The CD d ispl ay shows t he d isc number you ente red in Step 2 and the track number (next to P ) you entered in this step. The CD changer programs your selection. Note: If the t rack numbe r you entered disappea rs before you press TRACK , repeat Steps 2–3.
27 Rev iewing t he Progr am med Seq uence To review the programme d seq uence, press DI SC CHECK on the front of the syste m next to the CD disp lay. The displ ay shows the following p ro- gramming inform ation for each sel ec- tion in t he s equence.
28 4. Repeatedly press DISC SELEC- TOR or on the syst em t o enter the disc number for a CD you want to assign to a grou p. 5. Press EJECT /LOAD o n the inside of the CD door . OP EN appears on the CD display , and the s elected disc tray slides o ut.
29 Playi ng a Group 1. Repeatedly press PLA Y MODE on th e system or P. M O D E on t he remote control until appears on the display . 2. Press PERSON AL FI LE A , B , o r C on the s yst em or repeat edly press A/B/C on t he rem ote con trol until the grou p letter for the grou p you want to play is highlig hted .
30 CD CARE TIPS Even though a CD is very durable, y ou should handle it with c a re. • Keep the C D ins ide the C D c hanger or i n its protect ive case or sleeve when y ou are not pla ying it. • Handle a CD by its edges to avoid fingerprints that can prevent the CD changer ’s laser beam from accurately reading the CD.
31 USING THE CAS SETTE DE CK The system has two casset te decks. You can pl ay tapes in T APE 1, and you can use TAPE 2 (RECO RD/ PLAY) to play or r eco rd tapes. Note: To con trol a tape, use the co n- trol buttons under th e deck where you loaded i t.
32 Notes: • T o temporarily s top playback, press P AUSE . P re s s PA U S E again to continue playback. • T o fast-f o r w ard or rewind the tap e , p r e s s STOP/EJECT to sto p the ta p e, th e n p res s FA S T - F or REWIND . P re ss STOP/EJECT when the tape reaches the desired location.
33 When the tape in TAPE 1 finish es playing, the t ap e in TAPE 2 automati- call y begin s playb ack. The system au- tomatically stops the t ape in T APE 2 when it reaches the end.
34 Note: If you set the syst em to dub at high speed, the sound you he ar will be distorted during dubbi ng. Thi s is n or m a l. • T o re cord at normal speed f or bett er qua lit y sound , pres s HI-SPEED DUBBING unt il it cli cks an d pops out. Cautio n: Do not change the dub- bing speed while du bbing.
35 Re cord i ng fr om th e T une r or An oth er So und So urce Cautio n: Do n ot press any bu ttons on the remote control while recordi ng. Doing so might cause a distorted re- cording. Follow these ste ps to record from the tuner or from an e xternal aud io so urc e connected t o the system, such as a turntable, VCR, or other au dio equip- me nt.
36 Era sing a C asset te T ape To r ecord over a ca sset te ta pe, se lect an a udio s ourc e wit h no aud io playi ng, the n si mply rec ord as usual . The c as- sette de ck re cord s ov er th e pr evi ous rec ord ing. T o era se th e enti re c asse tte tap e, let the t ape r ecord to th e end.
37 TRO U BL ESHOOTI NG If your s yst em is not wo rking as i t sho uld, these s uggestions might help you elimi- nate the problem. If the system still does not operat e n ormally, take it to your local RadioShack store for assistance. Problem P ossible Caus e Su gg estion No power when POWER i s pr ess e d o n sy s te m .
38 Problem P ossible Caus e Su ggestio n CD changer does n ot work. • CD n ot sele cte d . • CD loaded incor- rectl y . •P r e s s CD . • Remove the CD and reload it with the label sid e up. CD changer will not load a C D. CD mec han is m is jammed.
39 CARE AND MA INTENANCE Your Op timus S ys tem 7 44 Mini Stereo Comp onent S ys tem is a n ex am ple of supe- rior design and crafts m anship. The follow i ng su ggestions will hel p your care for t he syste m so you can enjoy it for years. Keep the system dry .
40 CLEANING THE T APE– HANDLING P ARTS Di rt, d ust or pa rticle s of th e tape’ s coat ing can a ccumul ate o n the tape heads and ot her part s th at the tape touc hes.
41 SPECI FICA TIO NS AM PL IF IE R Fre quency Response ..... ..... ..... .... ..... ..... ..... .. ..... .... ..... .. ..... ..... 40 H z–20 kHz ± 3 d B RMS Output Powe r (1% THD into 8 Ohm s at 80 Hz–15 kHz) ....... 1 5 W atts/Channel Input Sensitivity/Impe danc e (at 1 kHz , AUX IN)/ Output (15 W V olum e Max) .
42 Controls 34 keys Power Requirements3VD C (T wo AAA B at teri es) GENERAL Power Requirements 120 V AC, 60 Hz Power Co nsumption105 watts Dimensions (HWD) 15 1 / 4 x 1 1 x 12 1 / 2 In ch es (39 x 28 x 3 2 cm) Weight 22 lbs 6.5 oz (10 kg) Specifications are typical; individual units m ight vary.
43 NOTES 13-1 291.fm Page 4 3 Wedn esda y, J ul y 14, 199 9 6: 29 PM.
Ra di oSha ck A Divisi o n of T an dy Corpor ation Fort Worth, T exa s 76102 6A6 Pr inte d i n Chin a RadioShack Limi ted W ar ranty Th is p roduct is w a rran ted agai nst def ects for 90 day s fro m date of p urch as e f rom Ra di oS ha ck co m p a ny -o w ne d s tor e s and au th ori ze d R a dio S h ac k f ran ch is ee s and de al - ers.
An important point after buying a device Optimus 744 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Optimus 744 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 744 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Optimus 744 you will learn all the available features of the product, as well as information on its operation. The information that you get Optimus 744 will certainly help you make a decision on the purchase.
If you already are a holder of Optimus 744, 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 744.
However, one of the most important roles played by the user manual is to help in solving problems with Optimus 744. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Optimus 744 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
