JVC KD-G631: More about this unit

• If you want to know more about RDS, visit

More about this unit

<http://www.rds.org.uk>.

Basic operations

Disc operations

Turning on the power

Caution for DualDisc playback

ENGLISH

• By pressing SRC on the unit, you can also turn on the

• The Non-DVD side of a “DualDisc” does not comply

power. If the source is ready, playback also starts.

with the “Compact Disc Digital Audio” standard.

Therefore, the use of Non-DVD side of a DualDisc on

Turning off the power

this product may not be recommended.

• If you turn off the power while listening to a disc, disc

play will start from where playback has been stopped

General

previously, next time you turn on the power.

• This unit has been designed to reproduce CDs/CD

Texts, and CD-Rs (Recordable)/CD-RWs (Rewritable)

Tuner operations

in audio CD (CD-DA), MP3 and WMA formats.

• When a disc is inserted upside down, “PLEASE” and

Storing stations in memory

“EJECT” appear alternately on the display. Press 0 to

• During SSM search...

eject the disc.

– All previously stored stations are erased and

• While fast-forwarding or reversing on an MP3 or

stations are stored newly.

WMA disc, you can only hear intermittent sounds.

– Received stations are preset in No. 1 (lowest

frequency) to No. 6 (highest frequency).

Playing a CD-R or CD-RW

– When SSM is over, the station stored in No. 1 will

be automatically tuned in.

• Use only “finalized” CD-Rs or CD-RWs.

• This unit can play back only files of the same type

• When storing a station manually, the previously

which are first detected if a disc includes both audio

preset station is erased when a new station is stored

CD (CD-DA) files and MP3/WMA files.

in the same preset number.

• This unit can play back multi-session discs; however,

unclosed sessions will be skipped while playing.

FM RDS operations

• Some CD-Rs or CD-RWs may not be played back on

• Network-Tracking Reception requires two types of

this unit because of their disc characteristics, or for

RDS signals—PI (Programme Identification) and AF

the following reasons:

(Alternative Frequency) to work correctly. Without

– Discs are dirty or scratched.

receiving these data correctly, Network-Tracking

– Moisture condensation occurs on the lens inside

Reception will not operate correctly.

the unit.

• If a Traffic Announcement is received by TA Standby

– The pickup lens inside the unit is dirty.

Reception, the volume level automatically changes to

– CD-R/CD-RW on which the files are written with

the preset level (TA VOL) if the current level is lower

“Packet Write” method.

than the preset level.

– There are improper recording conditions (missing

• When Alternative Frequency Reception is activated

data, etc.) or media conditions (stained, scratched,

(with AF selected), Network-Tracking Reception is

warped, etc.).

• CD-RWs may require a longer readout time since the

also activated automatically. On the other hand,

reflectance of CD-RWs is lower than that of regular CDs.

Network-Tracking Reception cannot be deactivated

without deactivating Alternative Frequency

Reception. (See page 16.)

Continued on the next page

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• Do not use the following CD-Rs or CD-RWs:

• This unit can play back files recorded in VBR (variable

– Discs with stickers, labels, or protective seal stuck

bit rate).

to the surface.

Files recorded in VBR have a discrepancy in elapsed

– Discs on which labels can be directly printed by an

time display, and do not show the actual elapsed

ink jet printer.

time. Especially, after performing the search function,

Using these discs under high temperatures or high

this difference becomes noticeable.

ENGLISH

humidities may cause malfunctions or damage to the

• This unit cannot play back the following files:

unit.

– MP3 files encoded with MP3i and MP3 PRO format.

– MP3 files encoded in an inappropriate format.

Playing an MP3/WMA disc

– MP3 files encoded with Layer 1/2.

– WMA files encoded with lossless, professional, and

• This unit can play back MP3/WMA files with the

voice format.

extension code <.mp3> or <.wma> (regardless of

– WMA files which are not based upon Windows

the letter case—upper/lower).

Media

Audio.

• This unit can show the names of albums, artists

®

– WMA files copy-protected with DRM.

(performer), and Tag (Version 1.0, 1.1, 2.2, 2.3, or

– Files which have the data such as AIFF, ATRAC3,

2.4) for MP3 files and for WMA files.

etc.

• This unit can display only one-byte characters. No

• The search function works but search speed is not

other characters can be correctly displayed.

constant.

• This unit can play back MP3/WMA files meeting the

conditions below:

– Bit rate of MP3: 8 kbps — 320 kbps

Playing MP3/WMA tracks from a USB memory

– Sampling frequency of MP3:

• While playing from a USB memory, the playback

48 kHz, 44.1 kHz, 32 kHz (for MPEG-1)

order may differ from other players.

24 kHz, 22.05 kHz, 16 kHz (for MPEG-2)

• This unit may be unable to play back some USB

12 kHz, 11.025 kHz, 8 kHz (for MPEG-2.5)

memories or some files due to their characteristics or

– Bit rate of WMA: 16 kbps — 32 kbps

recording conditions.

(Sampling frequency: 22.05 kHz)

• Depending on the shape of the USB memories and

32 kbps — 320 kbps

connection ports, some USB memories may not be

(Sampling frequency: 48 kHz,

attached properly or the connection might be loose.

44.1 kHz, 32 kHz)

• If the connected USB memory does not have the

– Disc format: ISO 9660 Level 1/ Level 2, Romeo,

correct files, “NO FILE” appears.

Joliet, Windows long file name

• This unit can show Tag (Version 1.0, 1.1, 2.2, 2.3, or

• The maximum number of characters for file/folder

2.4) for MP3 files and for WMA files.

names vary among the disc format used (includes 4

• This unit can play back MP3/WMA files meeting the

extension characters—<.mp3> or <.wma>).

conditions below:

– ISO 9660 Level 1: up to 12 characters

– Bit rate of MP3: 16 kbps — 320 kbps

– ISO 9660 Level 2: up to 31 characters

– Sampling frequency of MP3:

– Romeo: up to 128 characters

48 kHz, 44.1 kHz, 32 kHz (for MPEG-1)

– Joliet: up to 64 characters

24 kHz, 22.05 kHz, 16 kHz (for MPEG-2)

– Windows long file name: up to 128 characters

12 kHz, 11.025 kHz, 8 kHz (for MPEG-2.5)

• This unit can recognize a total of 512 files, of 200

– Bit rate of WMA: 16 kbps — 32 kbps

folders, and of 8 hierarchies.

(Sampling frequency: 22.05 kHz)

32 kbps — 320 kbps

(Sampling frequency: 48 kHz,

44.1 kHz, 32 kHz)

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• This unit can play back MP3 files recorded in VBR

DAB tuner operations

(variable bit rate).

• Only primary DAB services can be presetted even

• The maximum number of characters for:

when you store a secondary service.

– Folder names : 20 characters

• A previously preset DAB service is erased when a new

– File names : 25 characters

DAB service is stored in the same preset number.

– MP3 Tag : 128 characters

ENGLISH

– WMA Tag : 64 characters

iPod or D. player operations

• This unit can recognize a total of 2 500 files, 250

• When you turn on this unit, the iPod or D. player is

folders (999 files per folder), and of 8 hierarchies.

charged through this unit.

• This unit does not support SD card reader.

• While the iPod or D. player is connected, all

• This unit cannot play back the following files:

operations from the iPod or D. player are disabled.

– MP3 files encoded with MP3i and MP3 PRO format.

Perform all operations from this unit.

– MP3 files encoded in an inappropriate format.

• The text information may not be displayed correctly.

– MP3 files encoded with Layer 1/2.

– Some characters such as accented letters cannot be

shown correctly on the display.

Changing the source

– Depends on the condition of communication

• If you change the source, playback also stops.

between the iPod or D. player and the unit.

Next time you select the same source again, playback

• If the text information includes more than 8

starts from where it has been stopped previously.

characters, it scrolls on the display (see also page 17).

This unit can display up to 40 characters.

Ejecting a disc

• If the ejected disc is not removed within 15 seconds,

the disc is automatically inserted again into the

Notice:

loading slot to protect it from dust.

When operating an iPod or a D. player, some

• After ejecting a disc or removing a USB memory,

operations may not be performed correctly or as

“NO DISC” or “NO USB“ appears and you cannot

intended. In this case, visit the following JVC web

operate some of the buttons. Insert another disc,

site:

reattach a USB memory, or press SRC to select

For iPod users: <http://www.jvc.co.jp/english/car/

another playback source.

support/ks-pd100/index.html>

For D. player users: <http://www.jvc.co.jp/

General settings—PSM

english/car/support/ks-pd500/index.html>

• “AUTO” setting for “DIMMER” may not work correctly

on some vehicles, particularly on those having a

control dial for dimming.

In this case, change the “DIMMER” setting to any

other than “AUTO.”

• If you change the “AMP GAIN” setting from

“HIGH PWR” to “LOW PWR” while the volume level

is set higher than “VOL 30,” the unit automatically

changes the volume level to “VOL 30.”

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