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)....

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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...

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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...

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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...

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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...

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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...

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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...

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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...

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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,...

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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...