Owner`s manual | Ericsson 4220 Telephone User Manual

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Cat. No. 13-1288
OWNER’S MANUAL
Please read before using this equipment.
SYSTEM 741
Mini Stereo Component System
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FEATURES
Your Optimus System 741 Mini Stereo
Component System offers all of the
versatile features you need for excellent stereo sound and entertainment in
one compact package. The System
741 includes an AM/FM stereo tuner,
3-band frequency equalizer, CD player with a 21-track programmable
memory, dual cassette recorder with
auto-stop, and two speakers.
CD PLAYER FEATURES
SYSTEM FEATURES
Programmable Play — lets you program and play up to 21 tracks in any
order.
E-Bass Control — boosts low frequency sounds for an emphasized
bass sound.
3-Band Frequency Equalizer — lets
you adjust the sound to match your listening area’s unique acoustics.
Auxiliary Inputs — let you play an
auxiliary audio source through your
system.
Supplied Speakers — let you immediately begin listening to your system’s
sound.
Skip Search — lets you quickly skip
through a CD’s tracks so you can locate a particular one.
Audible Search — lets you quickly
play any track on a CD (forward or
backward) so you can locate a desired
section.
Random Play — lets you play a CD’s
tracks in random order.
Repeat Play — lets you automatically
repeat a single track, all tracks on the
CD, or a programmed sequence of
tracks.
3- or 5-Inch CD Compatible — lets
you play either 3- or 5-inch CDs on the
System 741.
Headphone Jack — lets you privately
listen to your system.
© 1996 Tandy Corporation.
All Rights Reserved.
Optimus is a registered trademark used by Tandy Corporation.
RadioShack is a trademark used by Tandy Corporation.
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CASSETTE PLAYER FEATURES
Auto-Stop — automatically stops the
cassette tape when it finishes to protect the tape and tape-handling parts.
Multiple Source Recording — lets
you record from the CD player, radio,
or an external audio source (such as
another cassette tape or CD player).
Mixed Recording — lets you record
onto a cassette tape while you talk
into a microphone and play prerecorded music from the other cassette
deck.
Automatic Level Control (ALC) —
automatically adjusts the recording
level.
Warning: This system employs a laser light beam. Only a qualified service person should remove the cover
or attempt to service this device, due
to possible eye injury.
Warning: To prevent fire or shock
hazard, do not expose this music system to rain or moisture.
CAUTION
RISK OF ELECTRIC SHOCK.
DO NOT OPEN.
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
This symbol is intended to alert you
to the presence of uninsulated dangerous voltage within the music
system’s enclosure that might be of
sufficient magnitude to constitute a
risk of electric shock. Do not open
the music system’s case.
Consecutive Tape Play — plays one
side each of two tapes, back to back.
Normal or High-Speed Dubbing —
lets you copy tapes at normal or twice
the normal speed.
Note: Most material on compact discs
and prerecorded tapes is copyrighted.
Unauthorized duplication of copyrighted material is a violation of the copyright laws of most countries and such
duplication may result in fines and/or
imprisonment. Note, however, that in
the United States, it is not a violation
of U.S. copyright laws for a consumer
to use an audio recording device to
duplicate musical recordings for noncommercial (personal) use.
!
!
This symbol is intended to inform
you that important operating and
maintenance instructions are included in the literature accompanying this music system.
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CONTENTS
Connections ......................................................................................................... 6
Connecting the Speakers ................................................................................ 6
Connecting an External Audio Source ............................................................. 6
Connecting an External Antenna ..................................................................... 7
Connecting Power ........................................................................................... 7
Connecting Headphones ................................................................................. 8
Listening Safely ......................................................................................... 8
Basic Operation ...................................................................................................
Turning On/Off the System ..............................................................................
Adjusting the Balance ......................................................................................
Using the 3-Band Frequency Equalizer ...........................................................
Using E-Bass ...................................................................................................
9
9
9
9
9
Radio Operation ................................................................................................. 10
CD Player Operation .......................................................................................... 11
Loading and Playing a CD ............................................................................. 11
Special CD Player Features .......................................................................... 12
Skip Search ............................................................................................. 12
Audible Search ........................................................................................ 12
Storing/Playing a Programmed Sequence .............................................. 12
Reviewing a Programmed Sequence ..................................................... 13
Editing a Programmed Sequence ........................................................... 13
Erasing a Programmed Sequence .......................................................... 13
Random Play .......................................................................................... 14
Cue ......................................................................................................... 14
Repeat .................................................................................................... 14
Time Display ........................................................................................... 15
Cassette Deck Operation .................................................................................. 16
Loading and Playing a Cassette Tape ........................................................... 16
Using Fast Forward/Rewind .................................................................... 17
Using Consecutive Play .......................................................................... 17
Dubbing and Recording ................................................................................. 17
Dubbing a Cassette Tape ........................................................................ 18
Recording from the Radio or CD Player ................................................. 19
Making a Mixed Recording ..................................................................... 19
Using an External Audio Source ...................................................................... 20
Listening to an External Audio Source .......................................................... 20
Recording from an External Audio Source .................................................... 20
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Care and Maintenance ...................................................................................... 21
CD Care Tips ................................................................................................ 22
CD Player Care Tips ..................................................................................... 22
Tape Tips ....................................................................................................... 22
Erasing a Cassette Tape .......................................................................... 22
Preventing Accidental Recording ........................................................... 23
Restoring Tape Tension and Sound Quality ........................................... 23
Cleaning the Tape-Handling Parts .......................................................... 23
The FCC Wants You to Know ....................................................................... 24
Specifications .................................................................................................... 25
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CONNECTIONS
Note: Complete all other connections
to the System 741 before you connect
it to power.
CONNECTING AN
EXTERNAL AUDIO
SOURCE
CONNECTING THE
SPEAKERS
You can connect an external audio
source to your System 741, such as a
TV, CD player, or cassette deck, so
you can listen to that source through
the System 741.
(il-
Plug the audio source’s left and right
line level audio wires into the AUX L
(left, white) and R (right, red) input
jacks on the back of the System 741.
(il-
1. Press open the pair of terminal
tabs marked SPEAKER/R (right)
on the back of the System 741.
2. Insert one speaker’s red wire into
the red (+) terminal and its black
wire into the black (–) terminal and
release the tabs to close the terminals.
3. Repeat Steps 1 and 2 to connect
the other speaker’s wires to the
terminals marked SPEAKER/L
(left).
6
To operate an external audio source
with the System 741, see “Using an
External Audio Source” on Page 20.
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CONNECTING AN
EXTERNAL ANTENNA
Your System 741 has two built-in antennas. The AM antenna is internal,
and the power cord serves as the FM
antenna.
For improved reception, you can attach an external FM or VHF TV antenna (not supplied) to the 75-ohm or
300-ohm terminals on the back of the
system.
(il-
CONNECTING POWER
After making all other connections,
plug your system’s AC power cord into
a standard AC outlet.
(il-
Caution: Your system’s power cord
has a polarized plug (one blade is wider than the other). If you have difficulty
inserting the plug into the outlet, do
not force it. Turn the plug over and try
again.
Note: If you are not connecting an external antenna, make sure the system’s power cord is fully extended.
Note: If you use an outside VHF TV
antenna, you can use a signal splitter
to connect your radio and TV to the
same antenna.
Your local RadioShack store has a
wide selection of antennas, splitters,
and connectors.
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CONNECTING
HEADPHONES
To listen privately, you can connect a
pair of stereo headphones with a 1/8inch plug (not supplied). Your local
RadioShack store has a wide selection of stereo headphones.
To connect headphones, plug the
headphones into the PHONES jack on
the front panel.
(il-
Note: Connecting headphones automatically disconnects the System
741’s speakers.
8
Listening Safely
To protect your hearing, follow these
guidelines when you use headphones.
• Set the volume to the lowest setting before you begin listening.
After you begin listening, adjust
the volume to a comfortable listening level.
• Do not listen at extremely high
volume levels. Extended high-volume listening can lead to permanent hearing loss.
• 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
discomfort might still damage your
hearing.
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BASIC OPERATION
TURNING ON/OFF THE
SYSTEM
To turn on the system, simply press
POWER . The POWER indicator lights.
Slide the control up to boost or down
to reduce the level. The selected frequency range is not changed if you set
the control to the center position (0).
(il(il-
To turn off the system, press POWER
again. The POWER indicator turns off.
ADJUSTING THE
BALANCE
To adjust the sound balance between
the left and right speakers, turn BALANCE toward L (left) or R (right).
(il-
LOW (100 Hz) — Adjusts the frequencies in the low bass range (low organ
notes and bass drums). Reduces rumble or other low-frequency noise.
MID (1 kHz) — Adjusts the range of fre-
quencies where the ear is most sensitive (vocals).
HIGH (10 kHz) — Adjusts high frequency sounds (cymbals, flutes, and violins).
USING E-BASS
Press E-BASS to the in position for enhanced bass sound. The E-BASS indicator lights.
USING THE 3-BAND
FREQUENCY
EQUALIZER
(il-
You can use the 3-BAND FREQUENCY
EQUALIZER to customize the sound
you hear through the speakers. Each
of the three slide controls lets you adjust the sound level in a specific frequency range.
Press E-BASS to the out position for
normal bass sound.
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RADIO OPERATION
1. Press TUNER. The TUNER indicator lights.
4. Set MONO/STEREO for the desired
sound.
(il-
(il-
2. Set BAND to AM or FM.
(il-
3. Adjust TUNING to the desired station.
Notes:
• If FM reception is strong, set
MONO/STEREO to STEREO to
receive the signal in stereo. The
FM STEREO indicator lights
when you receive an FM broadcast in stereo.
(il-
(il-
• For the best AM reception, simply change the position of the
system.
• For the best FM reception, fully
uncoil the power cord or connect an external FM antenna.
10
• If FM stereo reception is weak,
set MONO/STEREO to MONO.
The sound is monaural, but the
reception should improve.
5. Adjust VOLUME, BALANCE, and
the 3-BAND FREQUENCY EQUALIZER for the desired sound.
6. Press E-BASS to boost low frequency sounds for an emphasized
bass sound.
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CD PLAYER OPERATION
LOADING AND PLAYING
A CD
1. Press CD. The CD indicator lights,
00 appears briefly, then dISC
appears on the display.
(il-
OPEN/CLOSE.
OPEN
2. Press
appears on the display, and the
CD compartment opens.
(il-
3. Carefully place a CD in the compartment with the label facing up.
(il-
4. Press OPEN/CLOSE to close the
CD compartment. The display
temporarily shows 00, then
shows the CD’s total number of
tracks and total playing time.
(il-
Caution: Never force the CD
compartment door to close. You
might damage the CD player’s
loading mechanism or the CD.
5. Press PLAY/PAUSE to begin play.
Track number 01 and the elapsed
play time appear on the display.
The CD player plays all the tracks
in order.
(il-
Note: Press PLAY/PAUSE to stop
the CD temporarily.
appears on
the display. Press PLAY/PAUSE
again to play the CD.
disappears.
6. Adjust VOLUME, BALANCE, and
the 3-BAND FREQUENCY EQUALIZER for the desired sound.
7. Press E-BASS to boost low frequency sounds for an emphasized
bass sound.
8. The CD automatically stops when
it reaches the end. Press STOP to
stop playing the CD before it automatically stops.
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SPECIAL CD PLAYER
FEATURES
Skip Search
You can skip forward or backward
through the tracks on a CD or tracks in
a programmed sequence to quickly
find a desired track.
(il-
• To skip to the beginning of the
next track during play, press and
release SKIP/SEARCH
.
• To return to the beginning of the
current track during play, press
SKIP/SEARCH .
and release
• To skip forward or backward to
additional tracks, repeatedly press
SKIP/SEARCH
or
SKIP/SEARCH until the desired
track number appears on the display.
Audible Search
To search forward or backward during
play, press and hold down SKIP/
SKIP/
SEARCH
or
SEARCH. The CD plays rapidly and
you hear the music at a higher speed
but lower volume.
Release the button to resume normal
play.
Storing/Playing a
Programmed Sequence
You can program the CD player to
play up to 21 tracks in any order you
choose, and you can program the
same track to play more than once.
1. While the CD player is stopped,
press PROGRAM. The display
shows 00 P: 01 (memory location 1).
(il-
Notes:
SKIP/SEARCH
• If you press
while the first track is playing, the
first track replays.
• If you press SKIP/SEARCH
while the last track is playing, it
has no effect.
12
2. Press
SKIP/SEARCH
or
SKIP/SEARCH to find the
track you want to program into
memory location 1.
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3. Press PROGRAM again to store
the track in the current memory
location. The next memory location appears.
The CD’s total number of tracks and
playing time appear.
Note: To play the programmed sequence again, press PROGRAM then
PLAY/PAUSE.
(ilReviewing a Programmed
Sequence
4. Repeat Steps 2–3 for each track
you want to program.
Note: If you program more than
21 tracks, the additional tracks
replace
the
currently
programmed tracks.
5. Press PLAY/PAUSE. PGM appears
on the display and the CD player
plays the tracks in the order you
programmed.
Notes:
• Press PLAY/PAUSE to temporarily
stop the music. Press PLAY/
PAUSE again to resume play.
and
to move
through
the
programmed
sequence during play.
• Press SKIP/SEARCH
SKIP/SEARCH
Programmed play automatically stops
at the end of the last programmed
track.
To stop the CD player at any time during programmed play, press STOP .
To review a programmed sequence,
while play is stopped, repeatedly
press PROGRAM. The track number
and memory position number of each
stored track appear on the display.
Editing a Programmed
Sequence
To edit the programmed sequence, repeatedly press PROGRAM until the
stored track you want to change appears on the display.
Press SKIP/SEARCH
or
SKIP/SEARCH until the new track appears on the display, then press PROGRAM to store the new track in place
of the old one.
Erasing a Programmed
Sequence
To erase a programmed sequence,
you can press OPEN/CLOSE or POWER before, during, or after programmed play.
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Random Play
You can set the CD player to play a
CD’s tracks in random order.
1. Before or during play, press RANDOM so RND appears on the display.
(il-
• During random play, you can use
to advance to the next randomly selected track, use
to
return to the beginning of the current track, or repeat the current
track (see “Repeat” below).
To cancel random play and resume
normal play without stopping, simply
press RANDOM. RND disappears from
the display and the CD player resumes normal play.
Cue
2. If necessary, press PLAY/PAUSE
to begin random play. The CD
player randomly selects and plays
all the tracks on the CD once,
then automatically stops.
Note: If you select RANDOM while
a track is playing, the CD player
plays the track to the end, then
randomly selects and plays all the
tracks on the CD once.
3. To stop the CD player at any time
during random play, simply press
STOP.
Notes:
• The currently selected track number and its elapsed play time
appear as the CD plays.
• To skip to the next randomly
selected track, press SKIP/
SEARCH
.
14
To start playing a CD from a desired
track, before you begin play or during
SKIP/
pause,
repeatedly
press
SKIP/SEARCH
SEARCH
or
until the desired track number appears
on the display. Then press PLAY/
PAUSE to play the track.
Repeat
You can continuously repeat a single
track, all the tracks on a CD, or an entire programmed sequence of tracks
(see “Storing/Playing a Programmed
Sequence” on Page 12).
To continuously repeat a single track,
press REPEAT before or during play.
REP 1 appears on the display.
(il-
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To continuously repeat all tracks on
the CD, press REPEAT twice before or
during play. REP appears on the display.
To continuously repeat an entire programmed sequence, first program the
tracks you want to play, then press
REPEAT twice before or during play.
REP appears on the display.
To cancel repeat play during or after
play, repeatedly press REPEAT until
REP 1 and REP disappear from the
display. If repeat is cancelled during
play, the CD player resumes normal
play.
Note: Pressing STOP cancels repeat
play.
Time Display
While a track is playing, the display
shows the current track’s number and
the elapsed playing time since the
track began playing.
(il-
Press TIME once to display the current
track’s remaining playing time.
(il-
Press TIME twice to display the CD’s
total remaining playing time.
(il-
Press TIME three times to return to the
original display.
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CASSETTE DECK OPERATION
You can play one side of a cassette
tape in either TAPE 1 or TAPE 2 and
you can record tapes in TAPE 2.
3. Load the cassette with the open
edge down, the full reel on the left,
and the side you want to play facing you.
LOADING AND PLAYING
A CASSETTE TAPE
(il-
Notes:
• We recommend C-30, C-60, and
C-90 tapes. Avoid using C-120
tapes because they are thin and
can easily get tangled in tape
mechanisms.
• Before playing or recording any
cassette tape, take up any slack in
the tape by turning one of the cassette’s hubs with a pencil. If you
do not remove excess slack, the
tape might become tangled in the
record/playback mechanism.
1. Press TAPE. The TAPE indicator
lights.
(il-
4. Close the cassette compartment
door until it clicks.
5. Press PLAY.
(il-
Note: Press PAUSE to temporarily stop tape play. To resume
play, press PAUSE again.
6. Adjust VOLUME, BALANCE, and
the 3-BAND FREQUENCY EQUALIZER for the desired sound.
7. Press E-BASS to boost low frequency sounds for an emphasized
bass sound.
2. Open either cassette compartment by pressing STOP/EJECT.
8. The cassette stops automatically
when it reaches the end. Press
STOP/EJECT to stop tape play
sooner.
(ilNote: When the tape ends, turn it over
to listen to the other side.
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Using Fast Forward/Rewind
Press FAST-F to fast-forward or REWIND to rewind the cassette. To stop
fast forward or rewind before the end
of the tape, simply press STOP/EJECT .
The tape player automatically stops
when the cassette in TAPE 2 reaches
end.
To stop consecutive play before the
tape player automatically stops, press
STOP/EJECT on both decks.
(il-
DUBBING AND
RECORDING
Using Consecutive Play
You can play one side of a cassette in
TAPE 1, then immediately play one
side of a cassette in TAPE 2.
1. Load the cassette you want to
play first into TAPE 1 and the one
you want to play second into
TAPE 2.
(il-
You can use the System 741 to dub
(copy) another tape, or record from
the radio, CD player, or an external
audio source (see “Recording from an
External Audio Source” on Page 20).
Notes:
• The
VOLUME, E-BASS, BALANCE, and 3-BAND FREQUENCY
EQUALIZER settings do not affect
your recordings. The system automatically adjusts those levels.
• To record on a cassette, its eraseprotection tabs must be in place
(see “Preventing Accidental Recording” on Page 23).
2. Press PLAY on TAPE 1. The cassette in TAPE 1 plays.
3. Press PAUSE then PLAY on TAPE
2. When TAPE 1 reaches the end,
the cassette in TAPE 2 plays.
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Dubbing a Cassette Tape
You can dub at the tape’s normal playing speed or at twice the normal
speed. If you dub at normal speed,
you can listen as you record.
5. Press PAUSE and RECORD on
TAPE 2. Both PAUSE and
RECORD lock down.
6. Press PLAY on TAPE 1. TAPE 1
begins playback, PAUSE releases
on TAPE 2, and dubbing begins.
1. Press TAPE .
Notes:
2. Load the pre-recorded cassette
you want to record from into TAPE
1. Be sure the side you want to
record from is facing you.
• To skip an unwanted section on
TAPE 1, press PAUSE on TAPE
2 while the unwanted section
plays. To resume dubbing,
press PAUSE again.
3. Load a blank cassette (or one you
want to record over) into TAPE 2
with the side you want to record
on facing you.
• To monitor the tape you are
copying, adjust VOLUME.
4. Set DUBBING to NORMAL or HIGH.
Dubbing automatically stops when the
cassette in TAPE 2 reaches its end.
(il-
• Set DUBBING to NORMAL to
dub at normal speed. This produces the highest quality
results.
• Set DUBBING to HIGH to dub at
approximately twice the normal
speed. This produces the fastest results, but the quality is
slightly reduced.
18
If the cassette in TAPE 1 continues to
play, press STOP/EJECT. To stop dubbing before TAPE 2 stops automatically, press STOP/EJECT on both
cassette compartments.
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Recording from the Radio or
CD Player
1. Press TAPE . The TAPE indicator
lights.
Press TUNER and tune to the desired
station, or press CD and load the desired CD.
2. Load the pre-recorded cassette
you want to record from into TAPE
1. Be sure the side you want to
record from is facing you.
Insert a cassette you want to record
onto into TAPE 2, then press PAUSE
and RECORD. When the desired selection on the radio or CD player
plays, release PAUSE.
Note: Sometimes AM broadcasts produce a hum or whistling sound that
you can hear while listening to a recording from the radio. To eliminate or
reduce this sound, set BEAT CUT on
the back of the system to the position
that gives you the best quality recording.
(il-
Making a Mixed Recording
3. Load a blank cassette (or one you
want to record over) into TAPE 2
with the side you want to record
on facing you.
4. Insert the microphone into the MIC
jack.
5. Press PAUSE and RECORD on
TAPE 2.
6. When you are ready to record,
press PLAY on TAPE 1.
You can sing or speak along with
the cassette playing in TAPE 1.
Your voice and the music will be
mixed and recorded on the cassette in TAPE 2.
Note: To avoid feedback, adjust
VOLUME.
Recording stops automatically when
the cassette in TAPE 2 ends, or you
can press STOP/EJECT on TAPE 1 or
TAPE 2 to stop recording at any time.
You can connect a microphone with a
1/8-inch plug into the MIC jack so you
can record on TAPE 2 while you
speak into the microphone and play a
pre-recorded tape in TAPE 1. Your local RadioShack store carries a wide
selection of microphones.
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USING AN EXTERNAL AUDIO SOURCE
If you connected an external audio
source, such as a TV, VCR, or an external CD player or cassette deck, you
can use your System 741 to listen to
or record audio from that source.
LISTENING TO AN
EXTERNAL AUDIO
SOURCE
1. Turn VOLUME to MIN, and make
sure the external audio source’s
volume control (if any) is also set
to its lowest level.
2. Press AUX. The AUX indicator
lights.
(il-
RECORDING FROM AN
EXTERNAL AUDIO
SOURCE
Note: The VOLUME, E-BASS, BALANCE, and 3-BAND FREQUENCY
EQUALIZER settings do not affect your
recordings. The system automatically
adjusts those levels.
1. Turn VOLUME to MIN, and make
sure the external audio source’s
volume control (if any) is also set
to its lowest level.
2. Press AUX. The AUX indicator
lights.
3. Insert a cassette you want to
record on into TAPE 2.
4. Press RECORD to begin recording.
5. Start playback on the external
audio source.
3. Start playback on the external
audio source.
4. Adjust VOLUME, BALANCE, and
the 3-BAND FREQUENCY EQUALIZER for the desired sound.
5. Press E-BASS to boost low frequency sounds for an emphasized
bass sound.
20
Note: To pause the tape during
recording, press PAUSE. To
resume recording, press PAUSE
again.
6. To stop the tape at any time during recording, press STOP/EJECT.
7. Stop playback on the external
audio source.
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CARE AND MAINTENANCE
Your Optimus System 741 Mini Stereo Component System is an example of superior 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 shorten the life of electronic
devices, and distort or melt plastic parts.
Handle the system gently and carefully. Dropping it can damage
the circuit boards and can cause the system to work improperly.
Keep the system away from dust and dirt, which can cause premature wear of parts.
CLEANER
Wipe the system with a damp cloth occasionally to keep it looking new. Do not use harsh chemicals, cleaning solvents, or
strong detergents to clean the system.
Modifying or tampering with the system’s internal components can cause a malfunction and might invalidate its warranty and void your FCC authorization to operate it. If your system is not performing as it should, take it to your local RadioShack
store for assistance.
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CD CARE TIPS
CD PLAYER CARE TIPS
Although a CD is very durable, you
should handle it with care. We recommend the following precautions.
• To avoid damaging the CD player,
do not place anything but a CD in
the CD drawer.
• Keep the CD in its protective case
or sleeve when you are not playing it.
• Moving the CD player suddenly
from a cold place to a warmer one
can cause moisture to form on the
pickup lens and disrupt operation.
If this happens, unplug the CD
player then wait about one hour
before plugging it back in and
playing the CD.
• Keep the CD clean. Your local
RadioShack store sells suitable
CD cleaner kits.
• Keep the CD dry. Even a single
drop of moisture can act as a lens
and affect the laser beam’s focus.
If the CD gets wet, wipe it with a
soft, dry cloth before playing it.
• Do not write on either side of a
CD, especially the non-label side.
• Handle the CD by its edge to
avoid fingerprints and surface
scratches that can prevent the
laser from accurately reading the
CD.
• Do not store CDs in high-temperature, high-humidity locations.
• Remove any loaded CD from the
CD player before moving the System 741 to prevent damaging the
CD.
• To repair scratches on the CD surface, use a CD scratch repair kit
(such as “Scratch ’n Fix,” Cat. No.
42-127).
22
• If the System 741 is subjected to a
sudden shock or jolt during play,
the CD’s rotation speed might
suddenly change, and the music
might be briefly interrupted. This is
not a malfunction.
TAPE TIPS
Erasing a Cassette Tape
To erase a previously recorded section
of a tape, simply record over it. To
erase the entire cassette tape, let the
tape record to the end with no source
playing.
You can quickly erase both sides of a
cassette tape using a bulk tape eraser
(such as Cat. No. 44-232, not supplied), available at your local RadioShack store.
13-1288.fm Page 23 Wednesday, July 14, 1999 6:02 PM
Preventing Accidental
Recording
Restoring Tape Tension and
Sound Quality
Cassette tapes have two protection
tabs — one for each side. To protect a
recording from being accidentally recorded over, use a screwdriver to remove one or both of the cassette’s
protection tabs.
After you play a cassette tape several
times, the tape might become tightly
wound on the reels. This can cause
playback sound quality to deteriorate.
(il-
Note: Removing the protection tabs
does not prevent a bulk eraser from
erasing a cassette tape.
If you want to record on a tape side after you have removed the protection
tab, place a piece of strong plastic
tape over that side’s protection hole.
Be sure you cover only the hole originally covered by the protection tab.
To restore the sound quality, fast-forward the tape from the beginning to
the end of one side, then completely
rewind it. Then loosen the tape reels
by gently tapping each side of the cassette’s outer shell on a flat surface.
Caution: Be careful not to damage
the cassette when tapping it. Do not
touch the exposed tape or allow any
sharp objects near the cassette.
Cleaning the Tape-Handling
Parts
Dirt, dust or particles of the tape’s
coating can accumulate on the tape
deck’s tape heads and other parts that
the tape touches. This can greatly reduce the performance of the cassette
player.
(il-
23
13-1288.fm Page 24 Wednesday, July 14, 1999 6:02 PM
Use the following cleaning procedure
after every 20 hours of tape player operation.
Your local RadioShack store sells a
complete line of cassette deck cleaning supplies.
1. Disconnect power.
2. Open the cassette compartment
doors on TAPE 1 and TAPE 2.
3. Press PLAY on TAPE 1 and TAPE
2 to expose the tape-handling
parts.
4. Use a cotton swab dipped in
denatured alcohol or tape head
cleaning solution to clean the
record and play heads, pinch
roller, capstan, tape guides, and
erase head.
THE FCC WANTS YOU
TO KNOW
This system complies with limits for a
Class B digital device as specified in
Part 15 of FCC Rules . These limits
provide reasonable protection against
radio or TV interference in a residential area. However, your system might
cause TV or radio interference even
when it is operating properly. To eliminate interference, you can try one or
more of the following corrective measures:
• Reorient or relocate the receiving
antenna
(il-
• Increase the distance between the
system and the radio or TV
• Use outlets on different electrical
circuits for the system and the
radio or TV
If the problem continues, take your
system to your local RadioShack store
for assistance.
5. When you finish cleaning, press
STOP/EJECT on TAPE 1 and
TAPE 2 and close the cassette
compartment doors, then reconnect power.
24
13-1288.fm Page 25 Wednesday, July 14, 1999 6:02 PM
SPECIFICATIONS
Cassette Player:
Tape Speed ............................................................................................ 1 7/8 ips
Wow and Flutter (WRMS) .......................................................................0.35%
Frequency Response (at –3 dB) .................................................100 Hz–8 kHz
Recording System ................................................................................ AC Bias
Erase System ........................................................................................ Magnet
CD Player:
Number of Programmable Tracks ................................................................. 21
Tracks Frequency Response (at –3 dB) ......................................60 Hz–15 kHz
Dynamic Range ........................................................................................70 dB
Signal-to-Noise Ratio (JIS-A) ...................................................................60 dB
Harmonic Distortion (at 1 kHz) ..................................................................... 1%
Separation (at 1 kHz) ...............................................................................40 dB
Sampling Frequency ......................................................................... 176.5 kHz
Quantization Number .................................................................................1-Bit
Linear/Channel Oversampling .............................................................. 4 Times
Pick-Up System .....................................................................................3 Beam
Optical Source ................................................................. Semiconductor Laser
Wavelength ................................................................................... 760–820 nm
25
13-1288.fm Page 26 Wednesday, July 14, 1999 6:02 PM
General:
Microphone (Monaural) Impedance ................................................... 600 ohms
Headphones (Stereo) Impedance ....................................................16–32 ohm
Power Output ................................................................. 4.5 Watts per Channel
Dimensions (HWD) ....................................................12 1/8 ¥ 10 5/8 ¥ 9 1/4 Inches
(308 ¥ 270 ¥ 235 mm)
Weight: (Main Unit) ..................................................................................10 lb
(4.5 kg)
(Speakers) ...............................................................................3.15 lb
(1.4 kg)
Power Supply .................................................................. 120V AC 60 Hz, 38W
Tuning Range ..................................................................... AM: 530–1710 kHz
FM: 88–108 MHz
Graphic Frequency Equalizer .................................................... 100 Hz ±10 dB
1 kHz ±10 dB
10 kHz ±10 dB
Speaker Size ............................................................................ 5-Inch Speaker
Specifications are typical; individual units might vary. Specifications are subject to
change and improvement without notice.
26
13-1288.fm Page 27 Wednesday, July 14, 1999 6:02 PM
NOTES
27
13-1288.fm Page 28 Wednesday, July 14, 1999 6:02 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 dealers. 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. Warranty does not cover transportation costs. Nor does it cover a product subjected to misuse or accidental damage.
EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES
AND ANY IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURATION
OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. Some states do
not permit limitation or exclusion of implied warranties; therefore, the aforesaid limitation(s) or exclusion(s) may not apply to the purchaser.
This warranty gives you specific legal rights and you may also have other rights which vary from
state to state.
We Service What We Sell
10/95
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
6A6
Printed in Hong Kong
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