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                        13-1275.fm  Page 1  Wednesday, July 14, 1999  3:59 PM
Cat. No. 13-1275
OWNER’S MANUAL
Please read before using this equipment.
SYSTEM 728
MINI STEREO COMPONENT SYSTEM
 
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                        13-1275.fm  Page 2  Wednesday, July 14, 1999  3:59 PM FEATURES Your Optimus System 728 Mini Ste- æ lets you quick- Automatic Search   reo Compnent System is a versatile ly select any track on the loaded and high quality sound system. Its CDs. components include a 3-disc carou- sel CD changer with 32-track memo- æ repeats a single Repeat Play   ry, AM/FM stereo tuner with 20- track, all tracks on a single CD, all station presets, and dual cassette CDs in the CD compartment, or a players with high
                    
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                        13-1275.fm  Page 3  Wednesday, July 14, 1999  3:59 PM mend you record your system’s General serial number here. æ let you Auxiliary Input Jacks   connect an external audio input Serial Number: source to your system so you can lis- ten to or record from it. : To prevent fire or shock Warning hazard, do not expose this system to  lets you sing rain or moisture. Microphone Mixing æ along with the music you are playing. CAUTION  Most material on com- Important: RISK OF ELECTRIC SHOCK. ! pact discs a
                    
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                        13-1275.fm  Page 4  Wednesday, July 14, 1999  3:59 PM FCC INFORMATION This system complies with the limits for a Class B digital device as speci- fied in part 15 of FCC Rules. These limits provide reasonable protection against TV or radio interference in a residential area. However, your sys- tem might cause TV or radio interfer- ence even when it is operating properly. To eliminate interference, you can try one or more of the following correc- tive measures. • Reorient or relocate the TV or rad
                    
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                        13-1275.fm  Page 5  Wednesday, July 14, 1999  3:59 PM CONTENTS  Preparation .......................................................................................................7 Connecting the Speakers ............................................................................ 7 Connecting an External Audio Source......................................................... 7 Connecting an External Antenna .................................................................7 Installing the Remote C
                    
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                        13-1275.fm  Page 6  Wednesday, July 14, 1999  3:59 PM Repeat Play ............................................................................................... 21 Repeating a Single Track.................................................................... 21 Repeating All Tracks on a Selected CD.............................................. 21 Repeating All Tracks on All Loaded CDs ............................................ 21 Repeating a Programmed Sequence..................................
                    
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                        13-1275.fm  Page 7  Wednesday, July 14, 1999  3:59 PM PREPARATION   Complete all connections be- Note: CONNECTING AN  fore connecting to AC power and EXTERNAL AUDIO  turning it on. SOURCE To connect an external audio source CONNECTING THE  (such as a CD player or a cassette SPEAKERS deck) to your system, connect the source’s left and right line level out- AUX IN R L put jacks to the  and  jacks on the back of your system. CONNECTING AN  EXTERNAL ANTENNA You can attach an FM or VHF anten- na (not
                    
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                        13-1275.fm  Page 8  Wednesday, July 14, 1999  3:59 PM 3. Replace the cover. INSTALLING THE  REMOTE CONTROL’S  Caution: If you are not going to use BATTERIES the remote control for a month or more, remove its batteries. Weak The remote control requires two AA batteries can leak damaging chemi- batteries (not supplied) for power. cals. We recommend alkaline batteries, such as Radio Shack Cat. No. 23- Note: If the remote control operates 557. erratically or does not work, replace both batteries. Fo
                    
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                        13-1275.fm  Page 9  Wednesday, July 14, 1999  3:59 PM OPERATION TURNING POWER ON/ SETTING THE CLOCK OFF 1. If necessary, press DISPLAY so  and the time appear on CLO To protect your hearing, Warning:  the display. set VOLUME to MIN before you turn on the system. 2. Press MEMORY. flashes CLO on the display. Press POWER to turn on the system. The STAND BY indicator turns off and the indicator above CD, TUNER, TAPE, or AUX lights. Note: If you do not press TUN- ING  or  within 10 sec- onds after yo
                    
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                        13-1275.fm  Page 10  Wednesday, July 14, 1999  3:59 PM 4. Adjust BALANCE until you can BASIC OPERATION hear the sound equally from the left and right speakers. Follow these steps to operate your system. CD TUNER, TAPE AUX 1. Press , , or  to select the desired audio source. 5. Select the desired equalization by pressing NORMAL, POP, ROCK, or CLASSIC (see “Using the Electronic Graphic Equal- izer”). 6. Press E-BASS to emphasize bass sounds. To return to nor- mal bass sounds, press E-BASS again. 2
                    
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                        13-1275.fm  Page 11  Wednesday, July 14, 1999  3:59 PM Listening Safely USING HEADPHONES To protect your hearing, follow these You can use headphones (not sup- guidelines when you use head- plied) to listen in privacy. Insert the 1 phones. headphones’ /8-inch (3.5 mm) plug  PHONES into the jack. • Do not listen at extremely high volume levels. Extended high- volume listening can lead to per- manent hearing loss. • Set the volume to the lowest set- ting before you begin listening. After you begin
                    
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                        13-1275.fm  Page 12  Wednesday, July 14, 1999  3:59 PM DISPLAYING THE TIME USING THE MUTE  BUTTON To display the clock while you use DISPLAY the radio, press . To return The MUTE button lets you temporarily DISPLAY to the radio display, press  turn off the sound. Press MUTE once again. to turn it off. Press MUTE again to re- store sound. USING THE TIMER  USING THE  ELECTRONIC GRAPHIC  You can set the timer to automatical- ly turn on the system, play from the EQUALIZER tuner or a cassette tape (n
                    
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                        13-1275.fm  Page 13  Wednesday, July 14, 1999  3:59 PM Note: If you do not press TUN- 4. Press 2.  flashes on TIM OFF ING  or  within 10 seconds the display. after you press 1,  dis- TIM ON appears from the display. Start again from Step 1. 2. While  flashes, repeat- TIM ON edly press TUNING  to set the hour of the desired start time. 5. While  flashes, re- TIM OFF peatedly press TUNING  to set the hour of the desired end time. Notes: • Press and hold down TUNING  to continuously advance the hou
                    
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                        13-1275.fm  Page 14  Wednesday, July 14, 1999  3:59 PM To turn off the timer, simply press Turning the Timer On/Off  TIMER again. 1. Press TUNER or TAPE to select the desired audio source. Notes: 2. If you selected TUNER, select • The system’s controls do not the desired station (see “Using work when TIMER is pushed to the Tuner”) and adjust VOLUME on. To operate the system, you to a comfortable listening level. must turn off the timer. If you selected TAPE, insert the • If you played a cassette
                    
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                        13-1275.fm  Page 15  Wednesday, July 14, 1999  3:59 PM USING THE SLEEP USING THE REMOTE  TIMER CONTROL You can set the system to play up to The remote control’s buttons have 90 minutes, then automatically turn the same functions as the corre- off. sponding buttons on the main sys- tem. 1. Press CD, TUNER, TAPE, or AUX to select the desired audio To use the remote control, point it to- source. ward the remote sensor on the left of 2. Tune to the desired AM or FM the system’s AM/FM STEREO RE- radi
                    
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                        13-1275.fm  Page 16  Wednesday, July 14, 1999  3:59 PM USING THE TUNER  Press TUNER to use the system’s tu- Notes: er. The indicator above TUNER lights. • The system uses a built-in fer- rite antenna for AM reception. For the best AM reception, rotate the system. • For the best FM reception, see “Connecting an External FM Antenna.” 2. Use FM MODE/AM BEAT to select the desired AM or FM band’s mode. Note: When you select TUNER, the system automatically tunes to the If you selected FM: station that
                    
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                        13-1275.fm  Page 17  Wednesday, July 14, 1999  3:59 PM 2. Using either manual or auto- AUTOMATIC SEEK  matic seek tuning, select the TUNING station you want to store, then press MEMORY. 1. Press BAND to select the desired AM or FM band. AM or FM appears on the display. 2. Press TUNING AUTO. The sys- tem automatically searches up the band and stops when it finds the next strong station. 3. While  appears on the MEM- display, follow these guidelines to store up to 10 stations in memory. Note: You 
                    
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                        13-1275.fm  Page 18  Wednesday, July 14, 1999  3:59 PM • To store stations into memory Scanning the Preset  locations 6-10, press +5 then Stations a memory location button (1- 5). The station is stored, Press M/SCAN. The system scans  disappears, and the MEM- the preset stations and plays each display shows the frequency. station for 5 seconds.  This increases the Note: memory location number by 5. For example, if you press +5, then press memory loca- tion button 2, the radio stores the frequenc
                    
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                        ∇ ∇ 13-1275.fm  Page 19  Wednesday, July 14, 1999  3:59 PM USING THE CD CHANGER  LOADING A CD PLAYING A CD 1. Press CD. To play a CD, simply press PLAY/ PAUSE after you load it. The selected CD begins to play from Track 1. The display shows , the current tray number, the CD’s current track num- ber, the track’s elapsed time, and the current track number indicator flash- es. The system plays all the loaded CDs once. 2. Press OPEN/CLOSE to open the Notes: CD compartment. • After you load a CD, do 
                    
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                        ∇ ∇ ∇ ∇ ∇ ∇ 13-1275.fm  Page 20  Wednesday, July 14, 1999  3:59 PM SELECTING ANOTHER RANDOM PLAY CD This feature randomly selects and plays tracks from all loaded CDs. To select another CD, press CD SKIP before or during play. Note:  To randomly select tracks from only one or two CDs, you must load If the system is playing a CD, it stops only those CDs in the CD tray. playing it and begins playing the first track of the selected CD. STOP 1. Press  to cancel any CD function. AUTOMATIC SEARCH The