Naxa NX-680 User Manual

IMPORTANT INFORMATION REQUIRED BY THE FCC

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 undesirable 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 elevation
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.

MODEL: NX-680

INSTRUCTION MANUAL

PLL ELECTRONIC TUNING STEREO AM/FM RADIO
WITH WMA/MP3/CD PLAYER & REMOTE CONTROL

DEAR CUSTOMER:

Thank you for purchasing this car audio product.
Selecting fine audio equipment such as the unit you have just purchased is only the start
of your musical enjoyment. Now it is time to consider how you can maximize the fun and
excitement your equipment offers.
We hope you get the most out of your equipment by playing it at a safe level.
One that lets the sound come through loud and clear without annoying blare or distortion,
and, more important, without affecting your sensitive hearing.
Sound can be misled. Over time your hearing " comfort level " adapts to higher volumes
of sound. So what sounds " normal " can actually be loud and harmful to your hearing.
Guard against this by setting your equipment at a safe level BEFORE your hearing adapts.

To establish a safe level:
Start your volume control at the lowest setting , then slowly increase the sound until you can
hear it comfortably and clearly, and without distortion we want you listening for a lifetime.

Once you have established a comfortable sound level:
Set the dial and leave it there.
Taking a minute to do this now will help to prevent hearing damage or loss in the
future. After all, we want you listening for a lifetime.

ABOUT THIS MANUAL
This product features a number of sophisticated functions ensuring superior reception and
operation. All are designed for the easiest possible use, but many are not self-explanatory.
This operation manual is intended to help you benefit fully from their potential and to
maximize your listening enjoyment.

We recommend that you familiarize yourself with the functions and their operation by
reading through the manual before you begin using this product. In this operation manual,
the Basic Operation for each sound source is outlined at the beginning of its explanation,
covering simple operation for that source, such as merely playing music.

Remark:

In addition to normal audio CD, this unit can play CD-R and CD-R/W disc that contain
audio tracks as well; however, depending on the conditions of the recording equipment,
recording program or the CD-R as well as CD-R/W disc itself, some CD-R or CD-R/W
may not play.

When making music CD with CD-R or CD-R/W disc, too high recording speed may
result in poor signal quality and therefore, it is recommendable to select 24x or lower
speed for CD-R recording and 4x or lower speed for CD-R/W recording.

Page 1

SPECIFICATION

GENERAL
Supply Voltage DC 12V. Negative Ground
Current Consumption Max.7A
Power Output 7Watts X 4(measured at DC 14.4V)
Number of channels 2 STEREO channels.
Unit Dimensions 178[W] X 165[D] X 50[H] mm.

FM SECTION
Frequency range 87.5MHz - 107.9MHz
Effective sensitivity 3uV.
I.F Frequency 10.7MHz.

AM SECTION
Frequency range 530KHz - 1710KHz
Effective sensitivity 40dB.
I.F Frequency 450KHz

RCA LINE OUT
Output 1200mV @ CD MAX.

CD PLAYER
System MP3 Audio System.
Suitable CDs MP3, WMA, CD, CD-R, CD-RW Disc
Frequency characteristics 20Hz-100Hz < 5dB
10KHz-20KHz < 5dB.
S/N Ratio to CD 50dB [1KHz]

\

\

LOCATION AND FUNCTION OF CONTROLS

Fig. 1

Fig. 2

1. RELEASE BUTTON

Press the REL button to release the front control panel from the unit chassis,
then pull it up a little to remove from the unit chassis.
When the front control panel is removed the LED indicator flashes.

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2. SEL BUTTON (Select) AND ROTARY ENCODER

a) Press the SEL button briefly, it is activated as selecting each mode of E. VOL.

-> VOLUME ->BASS ->TREBLE -> BALANCE -> FADER ->
When selecting a desired audio mode, rotate the VOL knob to adjust the audio
effect.
In each mode, the waiting time is about 5 seconds, and the time waiting time
is over, it returns to the last display mode of tuner or CDP mode.
The control mode of E.VOL is operated with following numeric display.

- VOL: (MIN)00, 01,......46, 47(MAX).

- BASS/TRE: -07, -06,...,00,...+06,+07

- BAL: 0LR9, 1LR9, ..., 9LR9,..., 9LR1, 9LR0

- FAD: 0FR9,1FR9, ..., 9FR9,..., 9FR1, 9FR0

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b) When pressed longer 2 seconds, it is activated as cyclical mode of following
functions for user’s selection.

->BEEP (ON/OFF) -> USER SET(FLAT/CLASSIC/ROCK/POP)

->VOL(LAST/DEFA) ->CLK(ON/OFF)->CLK(12/24)mode.
After selecting the desired mode, rotate the VOL knob to select one setup
item of the desired mode.
BEEP ON/BEEP OFF
BEEP ON mode: The beep is generated when any key is pressed.
BEEP OFF mode: The beep sound is disabled.
VOL LAST/VOL DEFA
VOL LAST: The radio switches on at the actual volume it had when it was last
switched off.
VOL DEFA: After pressing SEL button, AVOL will be displayed. Then you can
pre-select a constant switch-on volume by using the VOL knob.
CLK ON/OFF
CLK ON: Clock will always show on the display when power off.
CLK OFF: Clock will disappear on the display when power off.

3. POWER ON/OFF

When the unit is power off, the unit comes to ON by pressing the power button.
It also can turn on the unit to insert a disc into CD slot.
When the unit is power on, press and hold the power button for more than 0.5
seconds, the unit goes into power off mode.

4. LCD Display

5&6. TUNE, SEEK, TRACK, SKIP UP / DOWN BUTTONS
a) During RADIO mode:

Press the >>| or |<< button shortly to manual tune up/down for the desired
radio station frequency step by step.
Press and hold the >>| or |<< button for longer 0.5 seconds, to automatically
tune up/down for the radio station frequency of strong signal.
b) During DISC playback mode:
Press the >>| button briefly to play next track.
Press the |<< button briefly to play the current track from the beginning of it
if the playing time is more than 2 seconds.
Press the |<< button briefly to play the previous track if the playing time is
less than 2 seconds.
Press the >>| or |<< button and hold to skip forwards or backwards, release
to resume disc playback.

TROUBLE SHOOTING

Before using the check list please make all the connections first.
If you still have questions after going through the checklist, please consult
your local customer service representative.

Common Symptoms

There is no power.

The CDs cannot
be loaded.

The CDs are loaded
only halfway into
the CD tray.

The device does
not work correctly
(EJECT, LOAD,
PLAY)

There is no sound.

The operation keys
do not work

The sound of the
CD player skips

No radio reception.

In automatic search
mode the radio does
not stop at a trans­mitting station.

Cause

The car ignition is switched off.

The fuse has blown.

Presence of CD disc inside the player

The transport screws have not been
removed.

Inserting the disc in upside down

The surface of CD is extremely dirty
or it is damaged.

Temperature inside the car is too
high.

The volume control is set too low.

The device has not been correctly
connected.

1.The built-in microcomputer is not
operating properly due to noise

2.Front panel is not properly fix into
its place

The installation angle is more than
30 degrees

The surface of the road is uneven.

The surface of CD is extremely dirty
or it is damaged.

The antenna cable is not connected. Insert the antenna cable firmly into the

weak.

If the power supply is properly connected to
the car accessory, switch the ignition key to
ON or " ACC " " " .

Replace another fuse according to the wiring
diagram.

Remove the disc in the player then put a new
upward

Remove the transport screws before using.

Insert the compact disc with the label facing
upward

Clean the CD or try another CD, if this works
correctly, the first CD is properly damaged.

Cool off until the ambient temperature returns
to normal

Turn up the volume properly.

Check the power and earth connection
according to the wiring diagram.

1. Switch the device off and on again. Or press
the RESET button to resume the program.

2. Reinstall the front panel

Adjust the installation angle to less than 30
degrees

Wait until the road becomes smoother before
playing the CD.

Clean the CD or try another CD, if this works
correctly, the first CD is properly damaged.

antenna socket of the device.

Tune in to a radio station manually.The transmission signals are too

Solution

Page 3 Page 12

PRECAUTION OF DISC PLAY:

Cleaning the CD:
Before playing a CD, wipe it off with a clean, dust-free cleaning cloth.
Wipe the disc in the direction of the arrow.

Always insert the CD with the label side facing upwards.
If the CD is inserted with the printed side facing downwards, the device may be
damaged.

7. BAND BUTTON
During radio mode, press the BND button briefly to select the radio broadcasting
band you would like to hear. The AM/FM band is toggled cyclically through the
tuning bands: ->FM 1-> FM 2 -> FM 3 -> AM 1->AM 2 ->.
During MP3/WMA mode, press the BND button short, it is activated selecting
song mode, and the TRK 000(if the number of tracks is less than 100 and more
than 9, it will be TRK 00) will be visible on the LCD display and the hundreds
digit 0 that the MP3/WMA disc contains will flash.
Rotate the VOL knob to select and enter the number on the flashing digit
place from 0 to 9.
Then press the BND button to confirm the entered number and the 0 on the
tens digit will be flashing.
Rotate the VOL knob to select and enter the number on the flashing digit
from 0 to 9.
Then press the BND button to confirm the entered number and the 0 on the
units place digit will be flashing.
Rotate the VOL knob to select and enter the number on the flashing digit
from 0 to 9.
After finishing enter all the number of the song serial number on the flashing
digit, press the SEL button to play the corresponding track.

8. MODE BUTTON
Press the MOD button to change among tuner(radio),disc(if disc is loaded)
and AUX mode.

Note: If there is already a CD in the CD slot, do not try to insert a second CD.
This may damage the device.
Always hold CDs by the edge. In order to keep the CD clean do not touch the surface.
Pull out the CD as shown below.

Do not attach any sticker or adhesive tape on the CD.
Do not expose the CD to direct sunlight or sources of heat such as heating vents.
Do not leave CDs in a car if it is parked in direct sunlight as that will lead to a con­ siderable rise in the temperature inside the car.

Note: Do not use any solvents such as petrol or thinning agents.
Commercially available cleaning substances or antistatic spray. This will damage
the device.

Page 11

9. MUTE BUTTON
This button serves to switch the MUTED state on/off.
Press the MUTE button to suppress the loudspeaker temporarily, and press
again to resume listening. The muted state will be also released when the
MODE, BAND, SEL button is pressed and VOL knob on the front panel is used.

10. INFRARED REMOTE CONTROL SENSOR

11. CLOCK BUTTON

Press the CLK button briefly to display time for 5 seconds on the display, and
then returns to its previous display unless the button is pressed again.
Then press the CLK button and hold for more than 1 seconds until the real time
flashes on the display. Then you can adjust HOUR or MINUTE by rotating the
VOL knob.

12. LOUDNESS BUTTON
When press shortly, the LOUD mode is turned on, its to enhance the bass sound
effect when the volume level is low. Press again to cancel the loudness effect.

13. ST/MO BUTTON

In FM mode, press the ST button briefly to select stereo or mono sound mode.

Page 4

14. A.P BUTTON (Auto-storage /Preset scan)

During radio mode:

1) Press the A.P button and hold for longer than one second to activate automatic
station storage. The radio searches from the current frequency. And then 18
FM or 12 AM signal stations are allocate to the corresponding storage locations
each band. When the auto-storage operation is finished, the radio execute the
Preset Scan.

2) Press the A.P button briefly, the radio searches for each preset station in the
current band and holds at that preset number for 5 seconds with releasing
mute, and then search again.

15-20. PRESET STATION MEMORY AND TOP/>||, INT, RPT, RDM BUTTONS
a) During radio mode:
When pressed short, these buttons select a preset station directly.
If the six buttons are pressed for more than 2 seconds, the station
currently being listened to is memorized into the selected preset button.

b) During CD/MP3/WMA mode:
Press the TOP/>|| button briefly to interrupt the playback of the disc.
Press again to resume normal playback.
Press the TOP/>|| button and hold for approximately 0.5 seconds to play
the first track of the current disc.
Press the INT button to play the first 10 seconds part of each track, and the
LCD will display INT ON.
Press again to stop scan, while the currently selected track will be played,
and the LCD will display INT OFF.
Press the RPT button to play the current track repeatedly, and the LCD will
display RPT ONE.
Press again to cancel this function, and the LCD will display RPT OFF.
During MP3/WMA mode, press the RPT button twice continuously to play the
tracks in the current folder repeatedly and RPT ABM will be visible on the LCD.
Press the RDM button to play all tracks on disc in random order, and the LCD
will display RDM ON.
Press again to cancel this function, and the LCD will display RDM OFF.
c) During the normal playback of CDs in MP3/WMA format:
Press the radio preset button 6 and 5 to move up and down10 tracks at a time.

INSTALLATION METHOD

This is an anti-theft installation method.
The main unit wears a METAL MOUNTING SLEEVE.
Please connect the wiring, eg, the Power Supply, the Speakers and the Antenna
according to the requirements of this Instruction Manual, then install the metal
mounting sleeve into the car as per the diagram illustrated below.

METAL SUPPORT STARP

DASHBOARD

METAL MOUNTING SLEEVE

To remove the unit out of the metal mounting sleeve,
insert the two supplied KEYS into the left and right side
slots of the chassis at the same time. Then pull the chassis
out of the metal mounting sleeve as shown in the right
illustration.

To boost up the capability of anti-jamming,
please make sure fix tightly the metal support
strap into the metal joint that connect to the
chassis of the car.

Bend the tabs on the metal mounting
sleeve against the DASHBOARD with
a screwdriver.

UNIT CHASSIS

PLASTIC TRIM RING

FRONT PANEL

NOTE

Before mounting and operating
the CD player, remove the metal
mounting sleeve illustrated by
the arrows.

Remove the two screws that
fix the CD deck mechanism player
during transportation before
mounting the player.

To attach the removable faceplate, insert the right
side of the faceplate into the right of the CD player
chassis first. Then push the left side of the face­plate into the chassis until you hear it “click”.

21. LOC BUTTON
Radio station search mode is divided by this LO/DX switch, this button can be
used to control an attenuator in the tuner during search. The detecting level
of seek, scan, auto-memory will be reduced as much as the attenuated level
of the tuner. In radio mode, press the LOC button to change local reception or
distance reception.
Note: This button is only for FM reception. In AM mode, LOC is void.

22. AUX INPUT JACK
Press the mode button to select auxiliary input playing mode. You can connect
any matched external audio device to the auxiliary input jack. Use the volume
control to adjust volume.

Page 5

Push this reset button with a cuspidal
object to renovate the distorted program
once the program is distorted.

To remove the front panel from the unit chassis, press the REL key
to release the front panel from the unit chassis, then pull it up a little
to take out from the unit chassis.

RESET BUTTON

Page 10

WIRING DIAGRAM

23. EJECT KEY
In the power on state, the loaded disc can be ejected by pressing the EJ key.

ANTENNA PLUG

CONSTANT B+

BLACK(GND)

IGNITION SWITCH
RED (B+)

FRONT

LEFT

SPEAKER

REAR

YELLOW

7A FUSE

FILTER
BOX

0.5A FUSE

+

-

+

-

WHITE

WHITE/BLACK

GREEN

GREEN/BLACK VIOLET/BLACK

RCA LINE OUT

GRAY

GRAY/BLACK

VIOLET

RED R

WHITE L

BLUE AUTO ANT

+

-

+

-

Note:

1.Make sure use a speaker with 4 ohm load impedance.

2.Do not make the auto antenna wire and ground touch each other.

FRONT

RIGHT

SPEAKER

REAR

24. CD SLOT

25. FLASHING LED
When the front control panel is removed this indicator flashes.

26. RESET BUTTON
Before operating the unit for the first time, or after replacing the car battery or
changing the connections. You must reset the unit.
Press this button with a cuspidal object. This operation will erase the clock
setting and some stored contents.

Page 9

Page 6

OPERATION OF REMOTE CONTROLLER

MAINTENANCE OF REMOTE CONTROLLER

1. Power On/Off.

4

POWER

MUTE

CLK A.P

MODE BAND

TOP/

1

4

RDM

12

2

5

+

SELDN

-

LOC LOUD

RPTINT

SCN

3

6

5

UP

11

6

ST

7

15

3

13

18

21

2. Mute Button

Loudness Button

3.

4. Level/MENU UP Button

5. SEL/MENU

Button

6. Level/MENU Down Button

7. MO/ST Button

8. A.P Button

9. Band Button

1

2

8

14

9

10

16

17

19

20

10. Mode Button

11.Tune/Seek Up And Track Skip Up/FF Button

12.Tune/Seek Down And Track Skip Down/REW Button

13.SCAN Button
Press the SCN button to scan the radio frequency. If a valid signal has detected,
the current frequency will be hold and blinked for 5 seconds, then press SCN
again to stop scan and remain the current frequency; otherwise, the radio will
go on to scan the other radio frequency five seconds later.

14. Clock Display /Setting Button

15. LOC Button

16. CD Track TOP/>||/Radio Preset 1

Before using the remote controller, pull out the insulating patch. This patch
was installed to insulate the battery from draining until ready to use.

BATTERY INFORMATION:

Lithium Battery: CR2025 3V
Battery Life: Approximately 6 months.

Replacing the Battery from the Remote Controller:

1) Remove the battery holder by pressing the locking tab with your thumb
and pulling it out.

2) Replace the battery with the same type and the “ side facing up.

+”

3) Gently push in the holder until securely locked into place.

B

A

+ side up

WARNING:

Do not recharge, disassemble or dispose of in fire.

Battery leakage may cause damage to the unit.

To avoid the risk of accident, keep batteries out of reach of children.

17. CD Track INT/Radio Preset 2

18. CD Track RPT/Radio Preset 3

19. CD Track RDM/Radio Preset 4

20. Radio Preset 5

21. Radio Preset 6

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