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13-1287.fm Page 1 Wednesday, July 14, 1999 5:56 PM
Cat. No. 13-1287
OWNER’S MANUAL
Please read before using this equipment.
SYSTEM 740
Mini Stereo Component System
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13-1287.fm Page 2 Wednesday, July 14, 1999 5:56 PM FEATURES Your Optimus System 740 Mini Stereo E-Bass Control — boosts low tones Component System offers, in one for an emphasized bass sound. compact package, all of the versatile features that you need for excellent Auxiliary Input Jacks — let you hear stereo sound and entertainment. an external audio source through your system. The System 740 includes an AM/FM stereo tuner, a dual cassette recorder Supplied Speakers — let you imme- with auto
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13-1287.fm Page 3 Wednesday, July 14, 1999 5:56 PM CONTENTS Connections ......................................................................................................... 4 Connecting the Speakers ................................................................................ 4 Connecting an Auxiliary Audio Source ............................................................ 4 Connecting an External Antenna .................................................................... 4 Connecti
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13-1287.fm Page 4 Wednesday, July 14, 1999 5:56 PM CONNECTIONS Caution: Complete all other connec- tions to the System 740 before you connect it to power. Illus CONNECTING THE SPEAKERS See “Using an Auxiliary Audio Source” on Page 14 for how to operate an ex- Illus ternal audio source with the System 740. CONNECTING AN 1. Insert the right speaker wire’s plug EXTERNAL ANTENNA 4 OHM SPK R into the (right) speaker jack on the back of the Your System 740 has two antennas. System 740. The AM an
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13-1287.fm Page 5 Wednesday, July 14, 1999 5:56 PM If you have an outside VHF TV anten- To connect headphones, plug the 1 na, you can use a signal splitter to headphones’ /8-inch plug into the connect this system and a TV to the PHONES jack on the front of the Sys- same antenna. Your local RadioShack tem 740. store has a wide selection of antennas and connectors. Illus CONNECTING POWER To connect power, after making all other connections, plug your system’s power cord into a standard AC outle
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13-1287.fm Page 6 Wednesday, July 14, 1999 5:56 PM BASIC OPERATION TURNING ON/OFF THE USING THE FREQUENCY SYSTEM EQUALIZER Press POWER to turn on the system. You can use FREQUENCY EQUALIZER The POWER indicator lights. to customize the sound you hear through the speakers. Each of the three controls lets you ad- just the level in a specific frequency Illus range. Slide the control up to boost, or down to reduce the level. If you set the control to the center position (0), the frequency is una
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13-1287.fm Page 7 Wednesday, July 14, 1999 5:56 PM USING E-BASS USING THE MUTE BUTTON E-BASS Press once for enhanced bass effects. The E-BASS indicator The MUTE button lets you temporarily lights. turn off the sound. Press MUTE to turn off the sound. The MUTE indicator lights. Press MUTE Illus again to restore the sound. The MUTE indicator turns off. Illus Press E-BASS again for normal bass sound. The E-BASS indicator turns off. 7
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13-1287.fm Page 8 Wednesday, July 14, 1999 5:56 PM RADIO OPERATION 1. Press TUNER. The TUNER indica- REO indicator lights when you tor lights. receive an FM broadcast in ste- reo. Illus Illus 2. Set BAND to AM or FM. • If FM stereo reception is weak, set MODE to MONO. The FM STEREO indicator turns off and the sound is mono, but the Illus reception should improve. 4. Adjust VOLUME, BALANCE, E- BASS, and FREQUENCY EQUAL- IZER for the desired sound. 3. Adjust TUNING to the desired sta- tion. Not
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13-1287.fm Page 9 Wednesday, July 14, 1999 5:56 PM CASSETTE PLAYER OPERATION You can play a cassette tape in either play facing you, the exposed tape cassette deck, and record tapes in edge facing down, and the full reel TAPE 1. to the left. LOADING A CASSETTE Illus TAPE Note: Take up any slack in the tape by turning the cassette’s hub with a pencil. If you do not remove excess slack, the tape might become tangled in the record/playback mechanism. 3. Close the door. Avoid touching the tape.
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13-1287.fm Page 10 Wednesday, July 14, 1999 5:56 PM 3. Press PLAY. The tape player plays Consecutive Play the cassette tape until it reaches the end, then it automatically The System 740 can play the first side stops. of a cassette loaded in TAPE 2, then the first side of a cassette loaded in TAPE 1. 1. Load the cassette you want to Illus play first into TAPE 2 and the one you want to play second into TAPE 1. 2. Press PLAY on TAPE 2. Note: Press PAUSE to tempo- 3. Press PAUSE and PLAY on TAPE
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13-1287.fm Page 11 Wednesday, July 14, 1999 5:56 PM 4. Adjust TUNING to the station you RECORDING ON A want to record. CASSETTE TAPE Note: Sometimes AM broadcasts The System 740 can record from the produce a hum or whistling sound radio or dub (copy) another tape. It that you hear while listening to a can also record from an auxiliary au- recording of them. To reduce or dio source (see “Recording from an eliminate this sound, set BEAT Auxiliary Audio Source” on Page 14). CUT on the back of t
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13-1287.fm Page 12 Wednesday, July 14, 1999 5:56 PM Notes: Dubbing a Cassette Tape • To skip an unwanted section You can dub at the tape’s normal play- during normal-speed dubbing, ing speed or at twice the normal press PAUSE on TAPE 1 while speed. the unwanted section plays. To resume dubbing, press PAUSE 1. Load the cassette you want to again. copy into TAPE 2 with the side you want to record facing you. • To temporarily stop recording, press PAUSE on both tape 2. Load a blank cassette (or
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13-1287.fm Page 13 Wednesday, July 14, 1999 5:56 PM • Removing the erase-protection TAPE CARE TIPS tabs does not prevent a bulk eraser from erasing a cassette Preventing Accidental tape. Erasure Cassette tapes have two erase-pro- Erasing a Cassette Tape tection tabs — one for each side. To protect a recording from being acci- If you no longer want a recording, you dentally recorded over or erased, use can record over it or erase it. a screwdriver to remove one or both of the cassette tape’s
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13-1287.fm Page 14 Wednesday, July 14, 1999 5:56 PM USING AN AUXILIARY AUDIO SOURCE If you connected an auxiliary audio RECORDING FROM AN source, such as a TV, VCR, a CD AUXILIARY AUDIO player, or an external cassette deck, SOURCE you can use your System 740 to listen to or record from that source. (See 1. Turn VOLUME to MIN, and be sure “Connecting an Auxiliary Audio that the audio source’s volume Source” on Page 4.) control (if it has one) is also set to its lowest level. LISTENING TO AN
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13-1287.fm Page 15 Wednesday, July 14, 1999 5:56 PM CARE AND MAINTENANCE Your Optimus System 740 Mini Stereo Component System is an example of supe- rior design and craftsmanship. The following suggestions will help you care for the system so you can enjoy it for years. Keep the system dry. If it gets wet, wipe it dry immediately. Liquids might contain minerals that can corrode the electronic circuits. Use and store the system only in normal temperature environments. Temperature extremes can
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13-1287.fm Page 16 Wednesday, July 14, 1999 5:56 PM 2. Open the cassette compartment THE FCC WANTS YOU doors on TAPE 1 and TAPE 2. TO KNOW 3. Press PLAY on TAPE 1 and TAPE Your system might cause TV or radio 2 to expose the tape-handling interference even when it is operating parts. properly. To determine whether your 4. Use a cotton swab dipped in system is causing the interference, denatured alcohol or tape head turn off your system. If the interfer- cleaning solution to clean the ence goe
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13-1287.fm Page 17 Wednesday, July 14, 1999 5:56 PM SPECIFICATIONS RADIO FM AM Frequency Range 88–108 MHz 530–1710 kHz IF Rejection 60 dB 60 dB Image Rejection 20 dB 30 dB Selectivity 25 dB 20 dB Signal-to-Noise (S/N) Ratio 60 dB 30 dB Stereo Separation 22 dB Usable Sensitivity 6 μV 1300 μV/m CASSETTE PLAYER Cassette Mechanism ............................................................................... Auto-Stop 7 Tape Speed ................................................................
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13-1287.fm Page 18 Wednesday, July 14, 1999 5:56 PM NOTES 18
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13-1287.fm Page 20 Wednesday, July 14, 1999 5:56 PM RadioShack Limited Warranty This product is warranted against defects for 90 days from date of purchase from RadioShack company-owned stores and authorized RadioShack franchisees and deal- ers. Within this period, we will repair it without charge for parts and labor. Simply bring your RadioShack sales slip as proof of purchase date to any RadioShack store. War- ranty does not cover transportation costs. Nor does it cover a product subjected
