JVC Kd-r303 Instruction Manual

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11OPERATIONS & EXTERNAL DEVICES
Listening to the other external components
You can connect an external component to AUX (auxiliary) input jack on\
 the control panel.
 Preparation:  Make sure “AUX ON” is selected in the “ SRC SELECT” 
= “AUX IN ” setting, see page 15.
1Select “AUX IN.”
2—Turn on the connected component and start playing the source.
3Adjust the volume.
You can adjust the auxiliary input level to avoid the sudden increase of\
 the output 
level (see “ AUX ADJUST ” on page 14).
4—Adjust the sound as you want (see page 12).
Connecting an external component to the AUX input jack
REPEAT
TRACK RPT :  Repeats current track
FOLDER RPT  :  MP3/WMA: Repeats current folder
RANDOM
FOLDER RND :  MP3/WMA: Randomly plays all 
tracks of current folder, then 
tracks of next folders
ALL RND :  Randomly plays all tracks
•  To cancel repeat play or random play, select  “RPT OFF ” or “RND OFF .”
•  To return to the previous menu, press BACK.
3.5 mm stereo mini plug
(not supplied) Portable audio player, etc.
 
Selecting the playback modes
You can use only one of the following playback modes 
at a time.
1 
2 
3
[Turn] = [Press]
REPEAT  Ô RANDOM
[Turn] = [Press]
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12
Selecting a preset sound mode
You can select a preset sound mode suitable to the 
music genre.
•  See also page 13 (“EQ”).
Preset value setting for each sound mode
Indication (For)BASS
TREBLE
LOUD
USER (Flat sound) 00 00 OFF
ROCK (Rock or disco music) +03 +01 ON
CLASSIC (Classical music) +01 –02 OFF
POPS (Light music) +04 +01 OFF
HIP HOP (Funk or rap music) +02 00 ON
JAZZ (Jazz music) +02 +03 OFF
 Storing your own sound mode
You can store your own adjustments in memory.
1 Select “USER” for “EQ.”
2 While “USER” is shown on the display...
•  If no operation is done for about 30 seconds, the 
operation will be canceled.
3 Select a tone.
4 Adjust the level.
Tone Level
BASS–06 to +06
TREBLE–06 to +06
•  To return to the previous menu, press BACK.
5 Finish the procedure. Select “EQ”
[Turn] = [Press]
[Turn] = [Press]
Preset values
BASS Ô TREBLE Select “EQ” 
= “USER”
[Turn] = [Press]
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13SETTINGS
Initial: Underlined
Menu operations
Category Menu items Selectable settings, [reference page]
DEMO
DEMO
Display 
demonstration • 
DEMO ON
•  DEMO OFF :  Display demonstration will be activated automatically if no 
operation is done for about 20 seconds, [6].
: Cancels.
CLOCK
CLOCK DISP  *1
Clock display • 
CLOCK ON
•  CLOCK OFF :  Clock time is shown on the display at all times when the 
power is turned off.
:  Cancels; pressing DISP will show the clock time for about 5  seconds when the power is turned off, [6].
CLOCK SET
Clock setting :  Adjust the hour, then the minute, [6].
 
[Initial: 0:00]
24H/12H
Time display mode • 
24 HOUR
•  12 HOUR :  See also page 6 for setting.
CLOCK ADJ  *
2
Clock adjustment • 
AUTO
•  OFF :  The built-in clock is automatically adjusted using the CT 
(clock time) data in the Radio Data System signal.
: Cancels.
EQEQ
Equalizer :  Select a preset sound mode suitable to the music genre.
 
USER, ROCK, CLASSIC, POPS, HIP HOP, JAZZ
DISPLAY
DIMMER
Dimmer • 
DIMMER ON  
•  DIMMER OFF :  Dims the display and button illumination.
: Cancels.
SCROLL *
3
Scroll • 
SCROLL ONCE
•  SCROLL AUTO
•  SCROLL OFF   :  Scrolls the displayed information once.
:  Repeats scrolling (at 5-second intervals).
: Cancels.
Pressing DISP for more than one second can scroll the display regardless\
 of the 
setting.
TAG DISPLAY
Tag display • 
TAG ON
•  TAG OFF :  Shows the Tag information while playing MP3/WMA 
tracks.
: Cancels.
*
1  If the power supply is not interrupted by turning off the ignition key o\
f your car, it is recommended to select 
“CLOCK OFF ” to save the car’s battery.
*
2  Takes effect only when CT (clock time) data is received.
*3  Some characters or symbols will not be shown correctly (or will be blan\
ked) on the display.
1 2 3  Repeat step  2 if necessary.
  •  To return to the previous menu, 
press BACK.
[Turn] = [Press]
Continued on the next page
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14SETTINGS
Category Menu items Selectable settings, [reference page]
TUNER
AF-REG *4
Alternative 
frequency/
regionalization 
reception • 
AF ON
•  AF-REG ON
•  OFF :  When the currently received signals become weak, the unit 
switches to another station (the programme may differ 
from the one currently received), [9].
  •  The AF indicator lights up.
:  When the currently received signals become weak, the  unit switches to another station broadcasting the same 
programme.
  •  The AF and REG indicators light up.
: Cancels.
PTY-STANDBY  *
4
PTY standby PTY OFF, PTY 
codesActivates PTY Standby Reception with one of the PTY codes, 
[9].
TA VOLUME  *
4
Traffic 
announcement 
volume VOLUME 00
 
–  VOLUME 50  
(or  VOLUME 00  
–  VOLUME 30 )*
5
Initial: VOLUME 15
P-SEARCH  *
4
Programme search • 
SEARCH ON
•  SEARCH OFF :  Activates Programme Search, [9].
: Cancels.
MONO  *
6
Monaural mode • 
MONO ON
•  MONO OFF :  Activate monaural mode to improve FM reception, but 
stereo effect will be lost, [7].
:  Restore the stereo effect.
IF BAND
Intermediate 
frequency band • 
AUTO
•  WIDE :  Increases the tuner selectivity to reduce interference noises 
between adjacent stations. (Stereo effect may be lost.)
:  Subject to interference noises from adjacent stations, but  sound quality will not be degraded and the stereo effect 
will remain.
AUDIO
FADER *7
Fader R06 – F06
:  Adjust the front and rear speaker output balance.
 [Initial: 00]
BALANCE  
Balance L06 – R06
:  Adjust the left and right speaker output balance.
 [Initial: 00]
LOUD
Loudness • 
LOUD OFF
•  LOUD ON : Cancels.
:  Boost low and high frequencies to produce a well-balanced 
sound at a low volume level.
AUX ADJUST
Auxiliary input 
level adjustment AUX ADJ 00 
— AUX ADJ 05
:  Adjust the auxiliary input level to avoid the sudden 
increase of the output level when changing the source to 
external component connected to the AUX input jack on 
the control panel.
*
4  Only for FM Radio Data System stations.
*5  Depends on the amplifier gain control.
*6  Displayed only when the source is “FM.”
*7  If you are using a two-speaker system, set the fader level to “00.”\
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15SETTINGS & REFERENCES
Category Menu items Selectable settings, [reference page]
AUDIO
BEEP
Keypress tone• 
BEEP OFF
•  BEEP ON :  Deactivates the keypress tone.
:  Activates the keypress tone.
TEL MUTING
Telephone 
muting • 
MUTING 1/
MUTING 2
•  MUTING OFF :  Select either one which mutes the sounds while using a 
cellular phone.
: Cancels.
AMP GAIN  *
8
Amplifier gain 
control • 
LOW POWER
•  HIGH POWER :  VOLUME 00 – VOLUME 30 (Select if the maximum power 
of each speaker is less than 50 W to prevent damaging the 
speaker.)
:  VOLUME 00 – VOLUME 50
SRC SELECT
AM  *9
AM station • 
AM OFF
•  AM ON :  Disable “AM” in source selection.
:  Enable “AM” in source selection, [4].
AUX IN  *
10
Auxiliary input • 
AUX OFF
•  AUX ON :  Disable “AUX IN” in source selection.
:  Enable “AUX IN” in source selection, [4].
*
8  The volume level automatically changes to “VOLUME 30” if you chang\
e to “ LOW POWER” with the volume level 
set higher than “VOLUME 30.”
*
9  Displayed only when any source other than “AM” is selected.
*10  Displayed only when any source other than “AUX IN” is selected.
More about this unit
  Basic operations
Turning on the power
•  By pressing SRC button on the unit, you can also turn 
on the power. If the source is ready, playback also 
starts.
Turning off the power
•  If you turn off the power while listening to a track, playback will start from where it had been stopped 
previously next time you turn on the power.
General
•  If you change the source while listening to a disc, playback stops.
  Next time you select “CD” as the playback source, 
playback will start from where it had been stopped 
previously.
•  After ejecting a disc, “NO DISC” appears and you 
cannot operate some of the buttons. Insert another 
disc or press SRC to select another playback source.
•  If no operation is done for about 30 seconds after  pressing MENU button, the operation will be 
canceled.
 Tuner operations
Storing stations in memory
•  During SSM search...
  –  All previously stored stations are erased and the 
stations are stored anew.
  –  When SSM is over, the station stored in the lowest 
preset number will be automatically tuned in.
•  When storing a station manually, the previously  preset station is erased when a new station is stored 
in the same preset number.
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16
FM Radio Data System operations
•  Network-Tracking Reception requires two types of Radio Data System signals—PI (Programme 
Identification) and AF (Alternative Frequency) 
to work correctly. Without receiving these data 
correctly, Network-Tracking Reception will not 
operate correctly.
•  If a Traffic Announcement is received by TA Standby  Reception, the volume level automatically changes to 
the preset level (TA VOL) if the current level is lower 
than the preset level.
•  When Alternative Frequency Reception is activated  (with AF selected), Network-Tracking Reception is 
also activated automatically. On the other hand, 
Network-Tracking Reception cannot be deactivated 
without deactivating Alternative Frequency 
Reception. (See page 14.)
 Disc operations
Caution for DualDisc playback
•  The Non-DVD side of a “DualDisc” does not comply 
with the “Compact Disc Digital Audio” standard. 
Therefore, the use of Non-DVD side of a DualDisc on 
this product may not be recommended.
General
•  This unit has been designed to reproduce CDs/CD Texts, and CD-Rs (Recordable)/CD-RWs 
(Rewritable) in audio CD (CD-DA), MP3/WMA 
formats.
•  When a disc is inserted upside down, “PLEASE” and  “EJECT” appear alternately on the display. Press 
0 to 
eject the disc.
•  MP3 and WMA “tracks” (words “file” and “track” are  used interchangeably) are recorded in “folders.”
•  While fast-forwarding or reversing on an MP3 or  WMA disc, you can only hear intermittent sounds.
Playing a CD-R or CD-RW
•  Use only “finalized” CD-Rs or CD-RWs.
•  This unit can only play back files of the same type as those detected first if a disc includes both audio CD 
(CD-DA) files and MP3/WMA files.
•  This unit can play back multi-session discs; however, unclosed sessions will be skipped while playing.
•  Some CD-Rs or CD-RWs may not play back on this  unit because of their disc characteristics, or for the 
following reasons:
  –  Discs are dirty or scratched.
  –  Moisture condensation has occurred on the lens 
inside the unit.
  –  The pickup lens inside the unit is dirty.
  –  The files on the CD-R/CD-RW are written using the 
“Packet Write” method.
  –  There are improper recording conditions (missing 
data, etc.) or media conditions (stained, scratched, 
warped, etc.).
•  CD-RWs may require a longer readout time since the  reflectance of CD-RWs is lower than that of regular 
CDs.
•  Do not use the following CD-Rs or CD-RWs:
  –  Discs with stickers, labels, or a protective seal stuck 
to the surface.
  –  Discs on which labels can be directly printed by an 
ink jet printer.
  Using these discs under high temperature or high 
humidity may cause malfunctions or damage to the 
unit.
Playing an MP3/WMA disc
•  This unit can play back MP3/WMA files with the 
extension code  or  (regardless of 
the letter case—upper/lower).
•  This unit can show the names of albums, artists  (performer), and Tag (Version 1.0, 1.1, 2.2, 2.3, or 
2.4) for MP3 files and for WMA files.
•  This unit can display only one-byte characters. No  other characters can be correctly displayed.
•  This unit can play back MP3/WMA files meeting the  conditions below:
  –  Bit rate: 8 kbps — 320 kbps
  – Sampling frequency:
   48 kHz, 44.1 kHz, 32 kHz (for MPEG-1)
   24 kHz, 22.05 kHz, 16 kHz (for MPEG-2)
  –  Disc format: ISO 9660 Level 1/Level 2, Romeo, 
Joliet, Windows long file name
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17REFERENCES
 –  WMA files encoded in lossless, professional, and 
voice format.
  –  WMA files which are not based upon Windows 
Media ®  Audio.
  –  WMA files copy-protected with DRM.
  –  Files which have data such as AIFF, ATRAC3, etc.
•  The search function works but search speed is not  constant.
Ejecting a disc
•  If the ejected disc is not removed within 15 seconds, it is automatically inserted into the loading slot again 
to protect it from dust. Playback starts automatically.
 Menu operations 
•  If you change the “AMP GAIN” setting from 
“HIGH POWER” to “LOW POWER” while the 
volume level is set higher than “VOLUME 30,” the 
unit automatically changes the volume level to 
“VOLUME 30.”
•  The maximum number of characters for file/folder 
names vary depending on the disc format used 
(includes 4 extension characters— or 
).
  –  ISO 9660 Level 1: up to 12 characters
  –  ISO 9660 Level 2: up to 31 characters
  –  Romeo: up to 128 characters
  –  Joliet: up to 64 characters
  –  Windows long file name: up to 128 characters
•  This unit can recognize a total of 512 files,  255 folders, and 8 hierarchical levels.
•  This unit can play back files recorded in VBR (variable  bit rate).
  Files recorded in VBR have a discrepancy in the 
elapsed time display, and do not show the actual 
elapsed time. In particular, this difference becomes 
noticeable after performing the search function.
•  This unit cannot play back the following files:
  –  MP3 files encoded in MP3i and MP3 PRO format.
  –  MP3 files encoded in an inappropriate format.
  –  MP3 files encoded with Layer 1/2.
Troubleshooting
What appears to be trouble is not always serious. Check the following po\
ints before calling a service center.
Symptoms Remedies/Causes
General
•  Sound cannot be heard from the speakers. •  Adjust the volume to the optimum level.
•  Check the cords and connections.
•  The unit does not work at all. Reset the unit (see page 3).
•  “AUX IN” cannot be selected. Check the “ SRC SELECT” 
= “AUX IN ” setting (see 
page 15).
FM/AM
•  SSM automatic presetting does not work. Store stations manually.
•  Static noise while listening to the radio. Connect the aerial firmly.
•  “AM” cannot be selected. Check the “ SRC SELECT” 
= “AM ” setting (see 
page 15).
Continued on the next page
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18
Symptoms Remedies/Causes
Disc playback
•  Disc cannot be played back. Insert the disc correctly.
•  CD-R/CD-RW cannot be played back.
•  Tracks on the CD-R/CD-RW cannot be skipped. •  Insert a finalized CD-R/CD-RW.
•  Finalize the CD-R/CD-RW with the component which 
you used for recording.
•  Disc can neither be played back nor ejected. •  Unlock the disc (see page 10). •  Eject the disc forcibly (see page 3).
•  Disc sound is sometimes interrupted. •  Stop playback while driving on rough roads. •  Change the disc.
•  Check the cords and connections.
•  “NO DISC” appears on the display. Insert a playable disc into the loading slot.
•  “PLEASE” and “EJECT“ appear alternately  on the display. Press 
0, then insert a disc correctly.
MP3/WMA playback
•  Disc cannot be played back. •  Use a disc with MP3/WMA tracks recorded in a format 
compliant with ISO 9660 Level 1, Level 2, Romeo, or 
Joliet.
•  Add the extension code  or  to the  file names.
•  Noise is generated. Skip to another track or change the disc. (Do not add the  extension code  or  to non-MP3 or 
WMA tracks.)
•  A longer readout time is required  (“READING” keeps flashing on the display). Do not use too many hierarchical levels and folders. 
•  Tracks do not play back in the order you  have intended them to play. The playback order is determined when the files are 
recorded.
•  The elapsed playing time is not correct. This sometimes occurs during playback. This is caused by  how the tracks are recorded on the disc.
•  The correct characters are not displayed  (e.g. album name). This unit can only display letters (upper case), numbers, 
and a limited number of symbols.
•  Microsoft and Windows Media are either registered trademarks or trademar\
ks of Microsoft Corporation in the  United States and/or other countries.
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19REFERENCES
 How to clean the connectors
Frequent detachment will deteriorate the connectors.
To minimize this possibility, periodically wipe the 
connectors with a cotton swab or cloth moistened with 
alcohol, being careful not to damage the connectors.
 Moisture condensation
Moisture may condense on the lens inside the unit in 
the following cases:
•  After starting the heater in the car.
•  If it becomes very humid inside the car.
Should this occur, the unit may malfunction. In this 
case, eject the disc and leave the unit turned on for a 
few hours until the moisture has evaporated.
 How to handle discs
When removing a disc from its 
case,  press down the center holder 
of the case and lift the disc out, 
holding it by the edges.
•  Always hold the disc by the edges. Do not touch its  recording surface.
When storing a disc in its case,  gently insert the 
disc around the center holder (with the printed surface 
facing up).
•  Make sure to store discs in cases after use.
Connectors
Center holder
 To keep discs clean
A dirty disc may not play correctly. 
If a disc does become dirty, wipe it with 
a soft cloth in a straight line from center 
to edge.
•  Do not use any solvents (for example, conventional 
record cleaner, spray, thinner, benzine, etc.) to clean 
discs.
 To play new discs
New discs may have some rough spots 
around the inner and outer edges. If 
such a disc is used, this unit may reject 
the disc.
To remove these rough spots,  rub the edges with a 
pencil or ball-point pen, etc.
Do not use the following discs:
Single CD (8 cm disc) Warped disc
Sticker and sticker residue Stick-on label
Unusual shape C-thru Disc (semi-
transparent disc)
Transparent or semi-
transparent parts on its  recording area
Maintenance
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20
AUDIO AMPLIFIER SECTION
Maximum Power Output: Front/Rear: 50 W per channel
Continuous Power Output (RMS): Front/Rear: 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz 
at no more than 0.8% total harmonic 
distortion.
Load Impedance: 4 Ω (4 Ω to 8 Ω allowance)
Tone Control Range: Bass: ±12 dB at 100 Hz
Treble: ±12 dB at 10 kHz
Frequency Response: 40 Hz to 20 000 Hz
Line-Out Level/Impedance: 2.5 V/20 kΩ load (full scale)
Output Impedance: 1 kΩ
Other Terminal: AUX (auxiliary) input jack
TUNER SECTION
Frequency Range: FM: 87.5 MHz to 108.0 MHz
AM: MW:  522 kHz to 1 620 kHz
LW:  144 kHz to 279 kHz
FM Tuner Usable Sensitivity: 11.3 dBf (1.0 μV/75 Ω)
50 dB Quieting Sensitivity: 16.3 dBf (1.8 μV/75 Ω)
Alternate Channel Selectivity (400 kHz): 65 dB
Frequency Response: 40 Hz to 15 000 Hz
Stereo Separation: 30 dB
MW Tuner Sensitivity: 20 μV
Selectivity: 35 dB
LW Tuner Sensitivity: 50 μV
Specifications
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