Oxygen RKD-3799BT User manual

DERENS
RKD-3799BT
Portable Stereo CD Boombox with
AM/FM/BLUETOOTH Radio and Cassette
Player/Recorder
Please read this Instruction Manual carefully before using the unit and retain it for future reference.
WARNING
TO PREVENT FIRE OR SHOCK HAZARD, DO NOT USE THIS PLUG WITH AN
EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN
BE FULLY INSERTED TO PREVENT BLADE EXPOSURE. TO PREVENT FIRE OR
SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

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The Caution Marking is located at the back enclosure of the apparatus.
The Rating plate is located at the back enclosure of the apparatus.
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or
other apparatus (including amplifiers) that product heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A
polarized plug has two blades with one wider than the other. A grounding type
plug has two blades and a third grounding prong. The wide blade or the third
prong is provided for your safety. If the provided plug does not fit into your outlet,
consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with a cart, stand, tripod, bracket, or table
recommended by the manufacturer, or sold with the product.
When a cart is used, use caution when moving the
cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused
for a long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the
apparatus has been damaged in any way, such as power-supply cord or plug is
damaged, liquid has been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not operate normally, or
has been dropped.
15. This appliance shall not be exposed to dripping or splashing water and that no
object filled with liquids such as vases shall be placed on the apparatus.
16. Do not overload wall outlet. Use only power source as indicated.
17. Use replacement part as specified by the manufacturer.
18. Upon completion of any service or repairs to this product, ask the service
technician to perform safety checks.
19. Power Sources - This product should be operated only from the type of power

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source indicated on the marking label. If you are not sure of the type of power
supply to your home, consult your product dealer or local power company. For
products intended to operate from battery power, or other sources, refer to the
operating instruction.
20. Object and Liquid Entry - 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.
21. Damage Requiring Service - Unplug this product from the wall outlet and refer
servicing to qualified service personnel under the following conditions:
a) When the power-supply cord or plug is damaged,
b) If liquid has been spilled, or objects have fallen into the product,
c) If the product has been exposed to rain or water,
d) 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 adjustment of other controls may result in damage
and will often require extensive work by a qualified technician to restore the
product to its normal operation.
e) If the product has been dropped or damaged in any way, and
f) When the product exhibits a distinct change in performance - this indicates a
need for service.
22. Mains plug is used as disconnect device and it should remain readily operable
during intended use. In order to disconnect the apparatus from the mains
completely, the mains plug should be disconnected from the mains socket outlet
completely.
23. Battery shall not be exposed to excessive heat such as sunshine, fire or the like.
24. Minimum distances of 10 cm around the apparatus for sufficient ventilation.
25. The ventilation should not be impeded by covering the ventilation openings with
items, such as newspapers, table-cloths, curtains, etc.
26. No naked flame sources, such as lighted candles, should be placed on the
apparatus.
27. The use of apparatus in moderate climates.
28. Attention should be drawn to the environmental aspects of battery disposal.
29. -CAUTION: Risk of explosion if the battery is replaced by an incorrect type.
30. -High or low extreme temperatures that a battery cannot be subjected to
during use, storage or transportation and low air pressure at high altitude.
31. -Replacement of a battery with an incorrect type that can defeat a safeguard.
32. -Disposal of a battery into fire or a hot oven, or mechanically crushing or
cutting of a battery, that can result in an explosion.
33. - Leaving battery in an extremely high temperature surrounding environment
that can result in an explosion or the leakage of flammable liquid or gas. A
battery subjected to extremely low air pressure that may result in an
explosion or the leakage of flammable liquid or gas.
This symbol indicates that this product incorporates
doub le
insulation between hazardous mains voltage and user
accessible p a r ts.
CAUTION:
TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF
PLUG TO WIDE SLOT. FULLY INSERT THE PLUG TO MAIN
POWER SOCKET.

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SAVE THESE INSTRUCTIONS
COMPLIANCE WITH FCC REGULATIONS
FCC ID: 2ACM4RKD3799BT
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
NOTE: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
CAUTION: Changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to
operate the equipment.
CAUTION
Follow the advice below for safe operations.

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ON PROTECTION AGAINST LASER ENERGY EXPOSURE
▪As the laser beam used in this compact disc player is harmful to the eyes, do not attempt to
disassemble the casing.
▪Stop operation immediately if any liquid or solid object should fall into the cabinet.
▪Do not touch the lens or poke at it. If you do, you may damage the lens and the player may
not operate properly.
▪Do not put anything in the safety slot. If you do, the laser diode will be ON when the CD door
is still open.
▪If the unit is not to be used for a long period of time, make sure that all power sources are
disconnected from the unit. Remove all batteries from the battery compartment.
▪This unit employs a laser. The use of controls or adjustment or performance of procedures
other than those specified here may result in exposure to hazardous radiation.
Should any trouble occur, remove the power source and refer servicing to qualified personnel.
PROTECT YOUR FURNITURE
This model is equipped with non-skid rubber 'feet' to prevent the product from
moving when you operate the controls. These 'feet' are made from non-migrating
rubber material specially formulated to avoid leaving any marks or stains on your
furniture. However certain types of oil-based furniture polishes, wood preservatives,
or cleaning sprays may cause the 'feet' to soften and leave marks or a rubber
residue on the furniture. To prevent any damage to your furniture we strongly
recommend that you purchase small self-adhesive felt pads, available at hardware
stores and home improvement centers everywhere, and apply these pads to the
bottom of the rubber 'feet' before you place the product on fine wooden furniture.
LOCATION OF CONTROLS

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1
BLUETOOTH INDICATOR
17
RECORDBUTTON
2
POWER ON INDICATOR
18
PROGRAM BUTTON
3
MICROPHONE
19
STOP BUTTON
4
PROGRAM INDICATOR
20
AUX IN JACK
5
PLAY/PAUSE INDICATOR
21
PLAY/PAUSE BUTTON
6
CASSETTE HOLDER
22
SKIP / BUTTONS
7
DIAL POINTER
23
REPEAT BUTTON
8
TUNING KNOB
24
REPEAT INDICATOR
9
FUNCTION SELECTOR
25
LED DISPLAY
10
VOLUME CONTROL
26
FM TELESCOPIC ANTENNA
11
BT/BAND SELECTOR
27
CARRYING HANDLE
12
PAUSE BUTTON
28
CD COMPARTMENT
13
STOP/ EJECT BUTTON
29
SPEAKERS
14
F.FWDBUTTON
30
AC SOCKET
15
REW BUTTON
31
BATTERY COMPARTMENT
16
PLAYBUTTON
POWER SOURCE
The RKD3799BT operates using standard AC 120V~ 60Hz household power or 6 x
“C” size (UM-2) batteries (Not included).
BATTERY OPERATION
NOTES:
Disconnect the AC power cord.
For best performance and longer operating time, we recommend the use of alkaline
batteries.
1. Remove the Battery Door on the bottom/back of the unit.
2. Following the polarity diagram shown in the BATTERY COMPARTMENT (#31)
to insert 6 X `C' size (UM-2) batteries and close the door.
BATTERY WARNING
1. Be sure that the batteries are installed correctly. Wrong polarity may damage the
unit.
2. Use only the size and type of batteries specified.
3. Only use good quality/name brand batteries.
4. Do not mix old and new batteries.
5. Do not mix alkaline, standard (carbon-zinc) or rechargeable (nickel-cadmium)
batteries.
6. If the unit is not to be used for an extended period of time, remove the batteries.
Old or leaking batteries can cause damage to the unit and may void the
warranty.
7. Do not try to recharge batteries not intended to be recharged; they can overheat

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and rupture. (Follow battery manufacturer’s directions).
8. Do not dispose of batteries in fire, batteries may leak or explode.
AC POWER CONNECTION
1. Insert one end of power cord to the AC SOCKET (#30) at the back of the
SB2135BT.
2. Connect the power cord to AC power source.
3. When the unit is operated from AC power source, the internal battery source will
automatically be disconnected
RADIO OPERATION
1. Turn on the radio by setting the FUNCTION SELECTOR (#9) to BT/FM/AM
position.
2. Use the BT/BAND SELECTOR (#11) to choose the AM or FM band.
3. Use the TUNING KNOB (#8) to tune to your desired radio station.
4. Adjust the VOLUME CONTROL (#10) to obtain the desired sound level.
5. To turn off the radio, set the FUNCTION SELECTOR (#9) to TAPE/OFF position.
TIPS FOR BEST RECEPTION
AM - The AM antenna is located inside the cabinet of the unit. If AM reception is
weak, change the position of unit until the internal antenna picks up the
strongest signal.
FM - To insure maximum FM tuner reception, fully extend the FM telescopic antenna
and rotate it for the best FM radio reception.
CD OPERATION
PLEASE READ THIS IMPORTANT INFORMATION:
CD mechanisms used in devices like this are designed to fully read all commercial
CDs. They will also read self-compiled CD-R/CD-RW discs but it may take up to 10
seconds for playback to start. If playback does not start, it is likely due to the quality
of the CD-R/RW disc and/or the compatibility of the CD compilation software.
Manufacturer is not responsible for the playback quality of CD-R/RW discs.
Do not attach a label or seal to either side of the CD-R/RW disc. It may cause a
malfunction.
1. Turn on the unit by setting the FUNCTION SELECTOR (#9) to CD/AUX position,
the POWER ON INDICATOR (#2) will light up.
2. Open the CD door and insert your CD (label up) into the CD COMPARTMENT
(#28). Then close the CD door, the total number of tracks will show on display.
3. Press PLAY/PAUSE BUTTON（#21）to start playback. The current track
number will show on display. The PLAY/PAUSE INDICATOR (#5）will light up.
PLAY/PAUSE
To temporarily stop playing, press PLAY/PAUSE BUTTON (#21). The
PLAY/PAUSE INDICATOR（#5）will flash. To resume play, press this button again.
STOP

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Press the STOP BUTTON（#19）when playback CD, the disc will cease to play.
(Total number of tracks will show on LED DISPLAY (#25).
SKIP AND SEARCH
You can choose to play your favorite track directly by taping the SKIP /
BUTTONS (#22) repeatedly. The LED DISPLAY (#25) will indicate the correct track
number selected.
To locate a particular section within a track, press and hold the SKIP /
BUTTONS (#22) until the section is found.
REPEAT
To repeat a particular track currently playing, press the REPEAT BUTTON（#23）
once. The REPEAT INDICATOR (#24) will flash.
To repeat all tracks, press the REPEAT BUTTON（#23）twice. The REPEAT
INDICATOR (#24) will light up and stay lit.
To cancel the repeat function, press REPEAT BUTTON（#23）again. The REPEAT
INDICATOR (#24) will turn off.
PROGRAM
1. In stop mode, press PROGRAM BUTTON (#18). “01“will flash on the LED
DISPLAY (#25).
2. Press SKIP / BUTTONS (#22) to select a desired track and press
PROGRAM BUTTON (#18) to conform. The PROGRAM INDICATOR (#4) will
flash in the course of programming.
3. Repeat above steps to program up to 20 tracks.
4. Press PLAY/PAUSE BUTTON (#21) to start program playback. The
PROGRAM INDICATOR (#4) will light up and stay lit.
5. To cancel program playback, press STOP BUTTON (#19) twice. The
PROGRAM INDICATOR (#4) will turn off.
Notes:
If you encounter CD playback problem, either of the following ways may help.
1. Turn off the unit. Disconnect the AC power cord from AC SOCKET and
reconnect it again.
2. Clean your CD disc.
AUX OPERATION
This unit provides an AUX IN JACK (#20) for connecting external audio devices like
MP3 players, CD players, smart phones and iPods (except iPod shuffle 3rd
generation) to listen to your external source through the speakers of this system.
1. You need an audio cable (not included) with one 3.5 mm stereo plug on each
end of the cable.
2. Plug one end of the cable into the AUX IN JACK (#20) located on the left-hand
side of the unit and the other end of the cable into the Line-out Jack or
Headphone Jack of your external audio device.
3. Turn on the external audio device.
4. Turn on the unit by setting the FUNCTION SELECTOR (#9) to CD/AUX position.
5. The volume level can now be controlled through the VOLUME CONTROL (#10)
of the unit. Operate all other functions on the auxiliary device as usual.

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6. Set the FUNCTION SELECTOR (#9) to TAPE/OFF position to turn off the unit.
Notes:
•If you connected the Line-out Jack of your external device then you only need to
adjust the volume control of this system. If you connected the Headphone Jack of
your external device then you may need to adjust both the volume control of your
external device and the volume control of this system to find the most desirable
volume setting.
•Remove the audio cable from AUX IN JACK (#20) when you finish listening. Don't
forget to switch off the power on your external device as well.
BLUETOOTH OPERATION
•Before operate the Bluetooth function, make sure your mobile phone supports
Bluetooth function.
•For different model of mobile phone, Bluetooth emissive power has some
difference. It is recommended that the distance between the mobile phone and
the unit is within 10 meters.
•Don’t put any metal object or any obstacle between the path of the mobile phone
and the unit.
Manual Pairing
1. Turn on the unit by setting the FUNCTION SELECTOR (#9) to BT/FM/AM
position, then use the BT/BAND SELECTOR (#11) to choose the BLUETOOTH
mode, the BLUETOOTH INDICATOR (#1) will flash rapidly.
2. Turn on the Bluetooth function of your mobile phone. (Please refer to the
instruction manual of your mobile phone on how to operate Bluetooth.)
3. Select the item of searching the Bluetooth device and enter it. Your mobile
phone starts to search for Bluetooth devices within range (10 meters). Select this
radio “SB2135BT” and confirm it.
Note:
- Enter 0000 for the password if necessary and confirm it
- If you have made Bluetooth connectivity before, a list of the previous search results
is displayed. Select “RKD3799BT”and confirm.
4. When pairing is successful, you can hear pairing sound and Bluetooth logo will
stop blinking.
5.During playback, press PLAY/PAUSE BUTTON (#21) to pause playback,
press again to resume.
6.During playback, press SKIP / BUTTONS (#22) to skip tracks.
7. To disconnect the Bluetooth connection, press and hold the PLAY/PAUSE
BUTTON (#21) until the BLUETOOTH INDICATOR (#1) flashes.
Reconnect To The Bluetooth Audio Source Device
If your Bluetooth audio source device has already been paired with SB2135BT but
accidentally disconnected, long press PLAY/PAUSE BUTTON (#21) to do
connection again.
TAPE OPERATION
Playing a tape
1. Set the FUNCTION SELECTOR (#9) to TAPE/OFF position.

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2. Press STOP/ EJECT BUTTON (#13) to open the CASSETTE HOLDER (#6).
3. Insert a tape and close the CASSETTE HOLDER (#6).
4. Press PLAYBUTTON (#10) to start playback.
5. Adjust the VOLUME CONTROL (#16) to obtain the desired sound level.
6. To pause playback, press PAUSE BUTTON (#12). Press the PAUSE
BUTTON (#12) again to resume playback.
7. To stop playback, press STOP/ EJECT BUTTON (#13).
8. To search backward or forward, press REW. BUTTON or F.FWD 
BUTTON (#15 or #14) and press PLAY BUTTON (#16) or STOP/ EJECT
BUTTON (#13) at the point you want stop.
Recording from radio/ auxiliary source
1. Set the FUNCTION SELECTOR (#9) to TAPE/OFF position.
2. Press STOP/EJECT BUTTON (#13) to open the CASSETTE HOLDER (#6).
3. Insert a tape and close the CASSETTE HOLDER (#6).
4. Select the desired sound source with the FUNCTION SELECTOR (#9).
In radio mode, tune to your desired radio station.
In AUX mode, start playback from your auxiliary source.
5. Press RECORD BUTTON (#17). PLAYBUTTON (#16) is depressed
automatically.
6. To pause recording, press PAUSE BUTTON (#12). Press the PAUSE
BUTTON (#12) again to resume recording.
7. To stop recording, press STOP/EJECT BUTTON (#13).
8. To listen to your recording, set the FUNCTION SELECTOR (#9) to TAPE /OFF
position. Press REW. BUTTON (#15) to rewind the tape to search your
recording, then press PLAYBUTTON (#16) to listen.
Recording from the built-in microphone
1. Set the FUNCTION SELECTOR (#9) to TAPE/OFF position.
2. Press STOP/EJECT BUTTON (#13) to open the CASSETTE HOLDER (#6).
3. Insert a tape and close the CASSETTE HOLDER (#6).
4. Press RECORD BUTTON (#17). PLAYBUTTON (#16) is depressed
automatically.
5. To pause recording, press PAUSE BUTTON (#12). Press the button again to
resume recording.
6. To stop recording, press STOP/EJECT BUTTON (#13).
7. To listen to your recording, press REW. button (#15) to rewind the tape to
search your recording, then press PLAYBUTTON (#16) to listen.
Note: The Built-in MICROPHONE (#3) is located on the front of the unit. Place the
recorder near the sound source to be recorded.
CARE AND MAINTENANCE
1. Do not subject the unit to excessive force, shock, dust or extreme temperature.
2. Do not tamper the internal components of the unit.
3. Clean your unit with a dry cloth. Solvent or detergent should never be used.
4. Avoid leaving your unit in direct sunlight or in hot, humid or dusty places.

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5. Keep your unit away from heating appliances and sources of electrical
noise such as fluorescent lamps or motors.
6. If drop-outs or interruptions occur in the music during
CD play, or if the CD fails to play at all, its bottom
surface may require cleaning. Before playing, wipe the
disc from the center outwards with a good soft cleaning
cloth
ABOUT CASSETTE TAPES
Whenever you record on a cassette any previously recorded material is erased as
the new material is recorded. To prevent you from accidentally erasing material
which you wish to save, blank cassettes are equipped with erase prevention tabs for
each side of the tape. If the erase prevention tab for side A is removed, you cannot
accidentally record on side A. The Record key cannot be depressed if the erase
prevention tab on the cassette has been removed.
To prevent accidental erasing on side A of a cassette use a small screw driver or
similar tool to break off the erase prevention tab for side A. This prevents the record
key form locking.
If later you do wish to record on side A of the cassette, cover the tab opening with a
piece of cellophane tape. This will allow the Record to function again.
CASSETTE CARE
Two common causes of trouble experienced when using cassettes are:
1) Tape Jamming –Leading to uneven speed in playback, and
2) Tape Tangling –Where the tape wraps itself around ital parts of the
mechanism.
To reduce the likelihood of these problems occurring, the following precautions
should be observed:
⚫Check that there are no loose layers of tape visible through the cassette center window
(see Fig. 1). Take up any loose layers, using a pencil or hexagonal barreled ballpoint pen,
before inserting the cassette into the machine (see Fig.2)

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⚫If the cassette feels tight while performing operation shown (see Fig.2), the tape
may be jamming due to ridges formed in the winding of the tape (visible through
the center window). These may be removed, in most cases, by fast winding of the
cassette from one end to the other and back again.
⚫Use only well-known brands of tape. Avoid use of C-120 cassettes.
Furthermore, do not expose cassettes to direct sunlight, dust or oil, and do not
touch the tape surfaces.
HEAD CLEANING
The tape heads, pinch roller and capstan require periodic cleaning. This removes
particles of the metal oxide coating that wear off the tape and accumulate on these
parts and impair performance. Switch off the power, press the STOP/EJECT
BUTTON (#13) to open the cassette door, and press the PLAYBUTTON (#16).
Clean the tape heads, pinch roller and capstan with a soft cloth or cotton pad
dampened in isopropyl alcohol or special tape head cleaner.
1. Avoid operating your unit under direct sunlight or in hot, humid or dusty places.
2. Keep your unit away from heating appliances and sources of electrical noise
such as fluorescent lamps or motors.
3. For better Display clarity, avoid operating the unit under direct sunlight or in
strong room illumination.
4. Unplug the unit from the electrical power outlet immediately in case of
malfunction.
TROUBLE SHOOTING
If you experience difficulties in the use of this music system, please check the
followings.
Symptom
Possible Cause
Solution
Noise or sound
Station not tuned properly for AM or
Retune the AM or FM broadcast

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SPECIFICATION
POWER SUPPLY AC 120V~ 60Hz, 14 W
DC 6 x1.5V type R14/ UM-2/ “C” size batteries (not included)
FREQUENCY RANGE FM 88 -108 MHz
AM 520 -1710 kHz
BLUETOOTH RF Output Power: 4 dBm
Bluetooth 2.402-2.48GHz
Working Distance: Up to 10 meters (32.8 feet) measured in open space (wall and structures
distorted on AM
or FM broadcast.
FM.
FM: Telescopic antenna is not
extended.
AM: The bar antenna is not
positioned correctly.
station.
Fully extend the FM telescopic
antenna.
Reposition the unit until the best
reception is obtained.
AM or FM no
sound.
Unit not set to AM or FM band.
Volume at minimum.
Set the band selector to AM or
FM position.
Increase Volume.
CD player will not
play.
Unit not in CD function mode.
CD is installed incorrectly.
If the CD is self-compiled, the
media used may not be
compatible with the player.
Select CD function mode.
Insert CD with label side up.
Use better quality blank media
and retest.
CD skips while
playing
Disc is dirty or scratched.
Wipe CD with clean cloth or use
another disc.
CD Intermittent
sound
Tape Playback
muffled or fuzzy
Dirty or defective disc.
Dirty Pick Up lens.
Player is subject to excessive
shock or vibration.
Tape head dirty
Clean or replace the defective
disc.
Use a CD-lens cleaning disc to
clean the lens.
Relocate the player away from
shock or vibration.
Clean tape head using head
cleaning cassette
No sound on
Bluetooth
The unit is not linked with the cell
phone.
- Speaker placement out of range.
- Volume set too low.
Go through “Bluetooth
Operations” process to link the
speakers.
- Relocate the speaker within
Bluetooth operating range.
- Rotate the volume knob to
turn the sound level up.
Sound is
distorted on
Bluetooth
- Volume level is set too high.
- Sound source is distorted.
- If the cell-phone original sound
source quality is poor, distortion
and noise are easily noticed
with high-power speakers.
- If you are using an external
sound source like older
generation of iPod, try reducing
the output volume on the device
itself.

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may affect range of device.
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc.
and any use of such marks by Spectra Merchandising Intl, Inc. is under license. Other
trademarks and trade names are those of their respective owners.