14-678.fm Page 1 Wednesday, June 2, 1999 9:29 AM
Cat. No. 14-678
OWNER’S MANUAL
Please read before using this equipment.
SCT-540
Dual Cassette Dubbing Deck
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IMPORTANT SAFETY INSTRUCTIONS
Careful attention is devoted to quality standards in the manufac-
ture of your cassette deck, and safety is a major factor in its de-
sign. However, safety is also your responsibility.
Objects and Liquids — Never push objects of any kind into this
product through openings, as they may touch dangerous voltage
points or short out parts that could result in a fire or electric
shock. Never spill liquid of any kind on the product.
This section lists important information that will help you properly
use and enjoy your cassette deck. Read all the included safety
and operating instructions before using your cassette deck.
Follow them closely, and retain them for future reference.
Servicing — Do not attempt to service this product yourself, as
opening or removing covers may expose you to dangerous volt-
age or other hazards. Refer all servicing to qualified service per-
sonnel.
Heed Warnings — Follow all warnings on the product and in the
operating instructions.
Damage Requiring Service — Unplug this product from the
wall outlet and refer servicing to qualified service personnel un-
der the following conditions:
Cleaning — Unplug this product from the wall outlet before
cleaning. Use only a damp cloth for cleaning. Do not use liquid
or aerosol cleaners.
• When the power-supply cord or plug is damaged.
Attachments — Do not use attachments/accessories not rec-
ommended by the product manufacturer, as they might create a
hazard.
• If liquid has been spilled or objects have fallen into the prod-
uct.
• If the product has been exposed to rain or water.
Water and Moisture — Do not use this product near water (for
example, near a bathtub, washbowl, kitchen sink, or laundry tub;
in a wet basement; or near a swimming pool).
• If the product does not operate normally by following the
operating instructions. Adjust only those controls that are
covered by the operating instructions, as an improper adjust-
ment of other controls may result in damage and will often
require extensive work by a qualified technician to restore the
product to normal operation.
Accessories — Do not place this product on an unstable cart,
stand, tripod, bracket, or table. The product may fall, causing se-
rious injury to a child or adult, and serious damage to the prod-
uct. Use only with a cart, stand, tripod, bracket, or table recom-
mended by the manufacturer or sold with the product. Follow the
manufacturer's instructions for mounting, and use a recom-
mended mounting accessory.
• If the product has been dropped or damaged in any way.
• When the product exhibits a distinct change in performance.
Replacement Parts — When replacement parts are required,
be sure the service technician uses replacement parts specified
by the manufacturer or having the same characteristics as the
original part. Unauthorized substitutions may result in fire, elec-
tric shock, or other hazards.
Carts — Move the product on a cart carefully.
Quick stops, excessive force, and uneven sur-
faces may cause the product/cart to overturn.
Safety Check — Upon completion of service or repairs to this
product, ask the service technician to perform safety checks to
determine that the product is in proper operating condition.
Ventilation — Slots and openings in the cabinet provide ventila-
tion, ensure reliable operation, and protect from overheating. Do
not block or cover these openings, and do not place the product
on a bed, sofa, rug, or other similar surface. Do not place the
product in a built-in installation such as a bookcase or rack un-
less it provides proper ventilation as specified by the manufac-
turer.
Wall or Ceiling Mount — The product should be mounted to a
wall or ceiling only as recommended by the manufacturer.
Heat — The product should be situated away from heat sources
such as radiators, heat registers, stoves, or other products (in-
cluding amplifiers) that produce heat.
Power Sources — Operate this product using only the power
source indicated on its marking label. If you are not sure of your
home's power type, consult your product dealer or local power
company.
Non-use Periods — Unplug the cassette desk’s power cord
when you will not use it for extended periods.
Polarization — This product is equipped with a polarized AC
line plug (a plug having one blade wider than the other). This
plug will fit in the power outlet only one way. This is a safety fea-
ture. If you cannot insert the plug fully into the outlet, try revers-
ing the plug. If the plug still doesn't fit, contact your electrician to
replace your obsolete outlet. Do not defeat the safety purpose of
the polarized plug. If you need an extension, use a polarized
cord.
Power-Cord Protection — Route power-supply cords so they
are not likely to be walked on or pinched by items placed on or
against them, paying particular attention to cords at plugs, con-
venience receptacles, and the point where they exit from the
product.
Lightning — For added protection for this product during a light-
ning storm, or when it is left unattended and unused for long pe-
riods of time, unplug it from the wall outlet and disconnect the an-
tenna or cable system. This will prevent damage to the product
due to lightning and power-line surges.
Overloading — Do not overload wall outlets, extension cords,
or integral convenience receptacles, as this can result in a risk
of fire or electric shock.
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CONTENTS
Preparation ................................................................................................................................................................... 5
Connections ............................................................................................................................................................ 5
Line Output Jacks ............................................................................................................................................. 5
Line Input Jacks ................................................................................................................................................ 5
AC Power Cord ................................................................................................................................................. 5
Controls and Functions .............................................................................................................................................. 6
Operation ...................................................................................................................................................................... 7
Automatic Search Music System ............................................................................................................................ 7
Using Continuous Play (DECK 1 to DECK 2) ......................................................................................................... 7
Recording a Cassette Tape ..................................................................................................................................... 7
Dubbing a Cassette Tape ........................................................................................................................................ 8
Changing a Cassette Tape in DECK 1 During Dubbing ................................................................................... 8
Auto Dubbing a Cassette Tape ............................................................................................................................... 8
Hi-Speed Dubbing a Cassette Tape ........................................................................................................................ 8
Care ........................................................................................................................................................................ 9
Tape Tips ................................................................................................................................................................. 9
Tape Selection .................................................................................................................................................. 9
Restoring Tape Tension and Sound Quality ..................................................................................................... 9
Erasing Tapes ................................................................................................................................................... 9
Preventing Accidental Erasure ......................................................................................................................... 9
Environment ................................................................................................................................................... 10
Cleaning the Tape-Handling Parts .................................................................................................................. 10
Troubleshooting .................................................................................................................................................... 10
Specifications ............................................................................................................................................................. 11
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PREPARATION
READ THIS BEFORE OPERATING
CONNECTIONS
• Choose the installation location of your cassette deck
carefully. Avoid placing it in direct sunlight or close to
a source of heat. Also avoid locations subject to
vibrations and excessive dust, heat, cold or moisture.
Connect your cassette deck to your receiver or amplifier
using the supplied audio cables.
Line Output Jacks
• Do not open the cabinet as this might result in dam-
age to the circuitry or electrical shock. If a foreign
object should get into the set, contact your dealer.
Using one of the audio cables, connect the cassette
deck’s L and R LINE OUT jacks to the receiver or amplifi-
er’s left and right tape input jacks.
• When removing the power plug from the wall outlet,
always pull directly on the plug, never yank the cord.
Line Input Jacks
• Do not attempt to clean the unit with chemical sol-
vents as this might damage the finish. Use a clean,
dry cloth.
Using the other audio cable, connect the cassette deck’s
LINE IN jacks to the receiver or amplifier’s tape output
jack.
• Keep this manual in a safe place for future reference.
Note: If you are not sure which receiver/amplifier jacks to
use, refer to your receiver or amplifier’s owner’s manual.
Amplifier
LINE
IN
OUT
Cassette Deck
L
R
To AC Outlet
AC Power Cord
Plug the AC power cord into an AC wall socket.
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CONTROLS AND FUNCTIONS
5
3
9
7
11
L
-00 -10 -5
0
+3 +6
R
14
12
15
2
6
10
13
1
4
8
1. POWER
2. PITCH CONTROL Volume
3. DECK 1 Cassette Lid and Holder
4. DUBBING with Indicator
HI-SPEED DUBBING with Indicator
AUTO DUB with Indicator
6. REVERSE MODE Indicator
8. REVERSE MODE Selector
10. DOLBY NR
5. DECK 2 Cassette Lid and Holder
7. LEVEL METER
9. DECK 2 COUNTER
11. RESET — Resets DECK 2 COUNTER
12. DOLBY NR Indicator
14. REC LEVEL Control Volume
13. Operation Panel Deck 1
PLAY
STOP
— ASMS —
15. Operation Panel Deck 2
PLAY
STOP
— ASMS —
RECORD
REC/
PAUSE
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OPERATION
1. To turn on the cassette deck, press POWER.
USING CONTINUOUS PLAY (DECK 1
TO DECK 2)
2. Gently press OPEN
on the cassette door (DECK 1
or DECK 2) and load the cassette tape.
You can set the cassette deck to play one side of the
tape in DECK 1, then automatically play the tape in DECK
2.
3. Press DOLBY NR and the indicator lights. Press
DOLBY NR again to turn off this feature.
4. Press REVERSE MODE to select the desired reverse
mode (Only DECK 2).
To turn on the continuous play, press PLAY on DECK 1 for
3 or 4 seconds. DECK 1 starts playing and the PLAY indi-
cator on DECK 2 flashes.
The cassette deck plays or records one
side of the tape and stops.
The cassette deck plays or records both
side of the tape and stops.
When the cassette in DECK 1 finishes playing, the cas-
sette tape in DECK 2 automatically begins playback.
Note: To play or record both sides, you must press
To cancel the continuous play, press STOP or any cas-
sette button of the deck which is currently playing (either
DECK 1 or 2).
PLAY
(not PLAY
).
The cassette deck plays endlessly.
Note: During recording, the cassette deck automati-
cally changes the setting and operates the same way
as both-side play.
RECORDING A CASSETTE TAPE
5. Press the PLAY button.
You can only record to a cassette in DECK 2.
The indicator lights and play begins.
For forward play.
Select the source to record from on your receiver amplifi-
er (CD, VCR, TUNER or DVD).
For reverse play.
1. Gently press OPEN
on DECK 2 and insert the tape
6. Adjust the tape speed by turning the pitch control.
7. Press STOP to stop the tape.
to be recorded into the cassette holder.
2. Press DOLBY NR to use the noise-reduction system.
3. Select the desired reverse mode.
•
To record on one side only.
To record on both sides.
AUTOMATIC SEARCH MUSIC
SYSTEM
•
RECORD
PAUSE
REC/
4. Press
.
The automatic search music system (ASMS) lets you
quickly locate a desired selection on a cassette tape. It
searches for the blank space before a selection and auto-
matically stops just before playback begins.
The RECORD indicator lights and both the PLAY
direction indicators flash.
5. Turn REC LEVEL between MIN and MAX to adjust the
recording level.
1. Press PLAY to begin playing a tape.
6. To select the direction for recording, press either
2. To skip to the beginning of the current selection,
PLAY
or
.
press
site direction of the play direction. To skip to the
beginning of the next selection, press or
or
— whichever points in the oppo-
— whichever points in the same direction as the play
direction.
ASMS might not operate as expected if:
• The pause between selection is less than 4 seconds
long.
• The overall recorded volume level of a selection is
very low.
• The noise level between selections is very high.
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Notes:
AUTO DUBBING A CASSETTE TAPE
• If you want to record both sides of the cassette tape
It is convenient to use this function when dubbing an en-
tire cassette tape from the beginning.
when the reverse mode switch is in
, be
sure to press PLAY . Otherwise, if you press PLAY
, only side B of the cassette tape records.
1. Insert a prerecorded cassette tape into DECK 1 and a
blank tape for recording into DECK 2.
• When both sides of the tape finish recording, DECK 2
automatically stops.
2. Press AUTO DUB.
The cassette tapes of DECK 1 and DECK 2 rewind
automatically to the beginning after you press AUTO
DUB. When rewinding is complete, Auto Dubbing
begins.
DUBBING A CASSETTE TAPE
1. Insert a prerecorded cassette tape into DECK 1, and
a blank tape for recording into DECK 2 to dub a tape
on one side.
One side of a cassette tape is recorded from the
beginning to the end automatically regardless of the
mode.
2. Press DUBBING.
The RECORD and DUBBING indicators light, and
both PLAY direction indicators
flash.
/
of DECK 2
HI-SPEED DUBBING A CASSETTE
TAPE
3. Press PLAY
or
to select the direction of the
cassette tape for DECK 2.
1. Insert a prerecorded cassette tape into DECK 1 and a
blank tape for recording into DECK 2.
The indicators in the selected buttons stop blinking
and the other indicators turn off.
2. Press HI-SPEED.
The indicator
of DECK 1 lights up.
3. Press DUBBING.
4. Press the STOP button on DECK 2 to stop dubbing.
4. Press PLAY
or
to select the direction of the
cassette tape for DECK 2.
Both decks stop.
The indicators in the selected buttons stop blinking
and the other indicators turn off.
Note: If the original tape was recorded using Dolby NR,
the copy also has Dolby NR, regardless of the position of
the DOLBY NR switch. If the tape you copy does not have
Dolby NR, you cannot add it to the tape you record.
5. Press STOP on DECK 2 to stop dubbing.
Both decks stop.
Changing a Cassette Tape in DECK 1 During
Dubbing
If you press STOP on DECK 1 during dubbing, DECK 1
stops and DECK 2 records 4 seconds of blank tape then
goes into the pause mode. During this time, you can
change the cassette tape in DECK 1. Press
RECORD
PAUSE
REC/
then press the PLAY button of DECK 1 to
resume dubbing.
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To prevent the tape from being twisted:
CARE
• Don’t pull the tape out of the upper opening of the
cassette tape.
To enjoy your Optimus SCT-540 Dual Cassette Dubbing
Deck for a long time:
• If the tape is wound loosely inside the cassette, use
the tape deck on fast forward or reverse to tighten
the tape.
• Keep the cassette deck dry. If it gets wet, wipe it dry
immediately.
• Use and store the cassette deck only in normal tem-
perature environments.
• If a small portion of tape is unwound from the cas-
sette, tighten the tape using a pencil.
• Handle the cassette deck gently and carefully. Don’t
drop it.
Use a pencil to
take up the slack
and rotate it in the
arrow direction.
• Keep the cassette deck away from dust and dirt.
• Wipe the cassette deck with a damp cloth occasion-
ally to keep it looking new.
Modifying or tampering with the cassette deck’s internal
components can cause a malfunction and invalidate its
warranty. If your cassette deck is not performing as it
should, take it to your local RadioShack store for assis-
tance.
Erasing Tapes
To record over a cassette tape, simply record as usual.
The cassette deck records over the previous recording.
You can quickly erase both sides of a cassette tape using
a bulk tape eraser available at your local RadioShack
store.
TAPE TIPS
Tape Selection
Note: If you use metal tape, the recorded sound might
not be erased properly.
For the automatic tape select function to work properly,
metal and chrome (cobalt) tapes must have identification
holes.
Preventing Accidental Erasure
Cassette tapes have two erase-protection tabs — one for
each side. When a tab is in place, you can record on that
side.
Normal Tapes
To prevent accidental erasure of a tape recording, use a
screwdriver to remove one or both of the cassette tape’s
erase-protection tabs. This prevents REC from being
pressed.
Chrome (Cobalt) Tapes
Tape position identification holes.
If you later decide to record on a tape side after you have
removed the erase-protection tab, place a piece of strong
plastic tape over that side’s erase-protection hole. Be
sure you cover only the hole originally covered by the
erase-protection tab.
Restoring Tape Tension and Sound Quality
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. To restore the
sound quality, fast-forward the tape from the beginning to
the end of one side, then completely rewind it. Then loos-
en the tape reels by gently tapping each side of the cas-
sette’s outer shell on a flat surface.
Caution: Removing the erase-protection tabs does not
prevent a bulk eraser from erasing a cassette tape.
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.
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Environment
TROUBLESHOOTING
Avoid using the deck in the following conditions:
If the cassette deck is not working as it should, the follow-
ing suggestions might help. If you follow the suggestions
in this chart and the cassette deck still does not work
properly, contact your local RadioShack store for assis-
tance.
• In areas with high temperatures (near a heater,
exposed to direct sunlight, for example.)
• In areas with extremely low temperatures.
• In areas where there is excessive humidity.
• In a dusty atmosphere.
Problem
Probable Cause
Suggestion
No sound while Volume of stereo Adjust the vol-
• In areas where power line voltage fluctuations are
severe (in which case the use of a voltage regulator
may be advisable).
the tape is
operating.
receiver/amplifier ume.
is set to “0.”
Input function
switch of ampli-
fier is not set to
TAPE.
Set the input
function switch to
TAPE.
Cleaning the Tape-Handling Parts
Dirt, dust or particles of the tape's coating can accumu-
late on the tape heads and other parts that the tape
touches. This can greatly reduce the performance of the
cassette player. After every 20 hours of tape player oper-
ation, follow these steps to clean the tape-handling parts
or use a cassette deck cleaning kit (available at your lo-
cal RadioShack store).
Strange
tone quality
or
Noise reduction
switch is not in
the correct posi-
Set the noise
reduction switch
to match the
appropriate kind
of recorded tape
you are using.
ragged sound. tion.
REC cannot be Erase-protection Cover the erase-
1. Remove the batteries and disconnect any other
power source.
operated.
tabs are removed. prevention tab
slots with adhe-
sive tape.
2. Open the cassette compartment door and press
PLAY to expose the tape-handling parts.
Low volume or Tape heads are
Clean the tape
heads.
weak sound
with mute inter-
vals.
dirty.
3. Use a cotton swab dipped in denatured alcohol or
tape head cleaning solution to clean the tape guides,
record/play head, erase head, pinch roller, and cap-
stan.
Poor operation Mute recorded
of skip function. length between
two successive
Increase the mute
length so that it is
longer than 4 sec-
onds or use a
4. When you finish cleaning, press STOP/EJECT and
close the cassette compartment door. Then recon-
nect power.
music selections
is not longer than tape that has a
4 seconds.
mute length which
is longer than 4
seconds.
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SPECIFICATIONS
DECK 1 (only for playing)
Track system ........................................................................................................................... 2 Track, 2-channel Stereo
Tape Speed .............................................................................................................................................. 4.8 cm/second
Motor ................................................................................................................................................................ DC Motor
Frequency response:
Normal Tape
CrO2 Tape
40–12.5 kHz
40–12.5 kHz
Fast Forward and Rewind Time ............................................................................................... 130 seconds (C-60 tape)
DECK 2 (for recording/playing)
Track system ........................................................................................................................... 4 Track, 2-channel Stereo
Recording system ............................................................................................................................................... AC Bias
Erasing System .............................................................................................................................................. AC Erasing
Tape Speed .............................................................................................................................................. 4.8 cm/second
Motor ................................................................................................................................................................ DC Motor
Frequency response:
Normal Tape
CrO2 Tape
40–14 kHz
40–15 kHz
Fast Forward and Rewind Time ............................................................................................... 130 seconds (C-60 tape)
Wow and Flutter ................................................................................................................................. 0.2% (JIS, WRMS)
Signal-to Noise Ratio (Dolby B NR Off) ............................................................................................. 55 dB (CCIRARM)
Noise Reduction Effect (Dolby B NR On) ............................................................................................ 65 dB (CCIRARM)
General
Power Requirements ............................................................................................................................ 120 V AC, 60 Hz
Power Consumption ................................................................................................................................................. 11 W
Dimensions (W x H x D) ............................................................................................................... 16.5 × 5.7 × 13 Inches
(420 × 146 × 330 mm)
Weight (net) ...................................................................................................................................................... 10 lb. 1 oz
4.6 kg
Specifications are typical; individual units might vary. Specifications are subject to change and improvement without
notice.
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Limited One-Year Warranty
This product is warranted by RadioShack against manufacturing defects in material and workman-
ship under normal use for one (1) year from the date of purchase from RadioShack company-owned
stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED HEREIN, Ra-
dioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES, INCLUDING
THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED
IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES CONTAINED
HEREIN. EXCEPT AS PROVIDED HEREIN, RadioShack SHALL HAVE NO LIABILITY OR RE-
SPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY WITH RESPECT TO ANY
LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR INDIRECTLY BY USE OR PERFOR-
MANCE OF THE PRODUCT OR ARISING OUT OF ANY BREACH OF THIS WARRANTY, INCLUD-
ING, BUT NOT LIMITED TO, ANY DAMAGES RESULTING FROM INCONVENIENCE, LOSS OF
TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT, SPECIAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES, EVEN IF RadioShack HAS BEEN ADVISED OF THE POSSI-
BILITY OF SUCH DAMAGES.
Some states do not allow the limitations on how long an implied warranty lasts or the exclusion of in-
cidental or consequential damages, so the above limitations or exclusions may not apply to you.
In the event of a product defect during the warranty period, take the product and the RadioShack
sales receipt as proof of purchase date to any RadioShack store. RadioShack will, at its option, un-
less otherwise provided by law: (a) correct the defect by product repair without charge for parts and
labor; (b) replace the product with one of the same or similar design; or (c) refund the purchase
price. All replaced parts and products, and products on which a refund is made, become the prop-
erty of RadioShack. New or reconditioned parts and products may be used in the performance of
warranty service. Repaired or replaced parts and products are warranted for the remainder of the
original warranty period. You will be charged for repair or replacement of the product made after the
expiration of the warranty period.
This warranty does not cover: (a) damage or failure caused by or attributable to acts of God, abuse,
accident, misuse, improper or abnormal usage, failure to follow instructions, improper installation or
maintenance, alteration, lightning or other incidence of excess voltage or current; (b) any repairs
other than those provided by a RadioShack Authorized Service Facility; (c) consumables such as
fuses or batteries; (d) cosmetic damage; (e) transportation, shipping or insurance costs; or (f) costs
of product removal, installation, set-up service adjustment or reinstallation.
This warranty gives you specific legal rights, and you may also have other rights which vary from
state to state.
RadioShack Customer Relations, 200 Taylor Street, 6th Floor, Fort Worth, TX 76102
We Service What We Sell
04/99
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
06A99
Printed in China
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