JVC KD-G321 - Car stereo

KD-G321 - Car stereo JVC - Free user manual and instructions

Find the device manual for free KD-G321 JVC in PDF.

📄 38 pages English EN Download 💬 AI Question 11 questions ⚙️ Specs
Notice JVC KD-G321 - page 5
View the manual : Français FR English EN
Pick your language and provide your email: we'll send you a specifically translated version.
Product Type CD/MP3/WMA Car Stereo with FM/AM Tuner
Brand and Model JVC KD-G321
Installation Dimensions (W×H×D) 182 mm × 52 mm × 150 mm
Front Panel Dimensions 188 mm × 58 mm × 11 mm
Weight 1.2 kg (without accessories)
Power Supply DC 14.4 V (11 V to 16 V), negative ground
Maximum Output Power 50 W × 4 channels
RMS Power 19 W × 4 channels at 4 Ω (40 Hz - 20 kHz, <0.8% distortion)
Load Impedance 4 Ω (4 to 8 Ω allowable)
FM Frequency Range 87.5 MHz - 108.0 MHz
AM Frequency Range MW: 522 kHz - 1620 kHz / LW: 144 kHz - 279 kHz
Supported Audio Formats CD audio, CD-R/RW, MP3, WMA
Main Functions RDS (Radio Data System), PTY, TA, AF/REG, customizable equalizer (Rock, Classic, Pops, Hip Hop, Jazz, User), fader, balance, loudness, repeat/random, detachable front panel, steering wheel remote control
Maintenance and Cleaning Clean connectors with a cotton swab soaked in alcohol; for discs, wipe from the center to the edges with a soft cloth. Avoid solvents.
Safety and Precautions Class 1 laser product: do not open the cover. Do not increase the volume excessively so as not to mask outside noises. Stop the vehicle before any complex operation.
Spare Parts and Repairability No user-serviceable parts. Entrust any repairs to qualified personnel.
General Information Operating temperature: 0 °C to +40 °C. Designed for use in a vehicle with a negative ground system.

Frequently Asked Questions - KD-G321 JVC

How to reset the JVC KD-G321 car stereo?
To reset the unit, press the reset button on the front panel using a pen or pointed object. All preset settings will be erased.
How to eject a stuck disc?
If a disc is stuck, press and hold the eject button for at least 5 seconds. If this doesn't work, reset the car stereo (see previous question). Be careful not to drop the disc.
How to activate traffic announcement standby (TA)?
Press the TP/PTY button to activate TA standby. The TP indicator lights up. The unit will automatically switch to traffic announcements, regardless of the source (except AM).
Why is there no sound?
Check that the volume is not at minimum or in ATT mode (mute). If the ATT indicator is on, press the corresponding key to restore sound. Also check the speaker connections.
How to manually preset radio stations?
Select the band (FM1-FM3 or AM) with BAND, tune to the desired station, then press and hold a number button (1 to 6) until the preset number flashes and then stays lit. The station is memorized.
What to do if the car stereo does not play a CD or CD-R/RW?
Make sure the disc is inserted correctly (label side up). CD-R/RWs must be finalized. Clean the disc with a soft cloth from the center to the edges. If the problem persists, try another disc.
How to adjust bass and treble?
Press SEL several times until BAS (bass) or TRE (treble) appears, then turn the control knob to adjust from -06 to +06. The settings are memorized for the current sound mode.
How to activate random track playback?
Press RND (button 12) during disc playback. Choose FLDR RND (folder random) or DISC RND (whole disc). To cancel, select RND OFF.
How to change the time display between 12h and 24h?
Enter PSM mode by pressing M MODE then use the adjustment keys. Select 24H/12H and choose 24H or 12H. Confirm by pressing M MODE.
How to clean the front panel connectors?
Detach the front panel. Use a cotton swab or soft cloth soaked in alcohol to gently rub the metal connectors on the panel and the chassis. Let it dry before reattaching the panel.

User questions about KD-G321 JVC

1 question about this device. Answer the ones you know or ask your own.

Ask a new question about this device

The email remains private: it is only used to notify you if someone responds to your question.

What does the error code YO:000AY on the JVC KD-G321 car radio mean and how can it be resolved?
Frequently Asked Questions - 12/02/2026
Response Notice-Facile

The error code YO:000AY displayed on the JVC KD-G321 car radio generally indicates a problem related to disc playback or an internal malfunction of the device. Here are several steps to follow to try to resolve this issue:

1. Restarting the car radio

Completely turn off the car radio and then turn it back on. Sometimes, a simple restart can correct temporary errors.

2. Checking the disc

  • If you are using a CD, check that it is not scratched or dirty.
  • Gently clean the disc with a soft cloth if necessary.
  • Try another disc to see if the problem persists.

3. Checking the connections

Ensure that all connections of the car radio are securely attached and that no cables are loose or damaged.

4. Resetting the car radio

If the problem continues, perform a reset of the device. This is usually done by pressing a small reset button located on the front or back panel of the car radio. This operation will reset the settings to zero and may resolve internal errors.

If none of these solutions work, it is advisable to have the device checked by a professional or an authorized after-sales service, as the problem may be hardware-related.

Respond (be the first)

Download the instructions for your Car stereo in PDF format for free! Find your manual KD-G321 - JVC and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. KD-G321 by JVC.

USER MANUAL KD-G321 JVC

natural_image Diagram showing a device panel being inserted into a housing, with no visible text or symbols.

MP3

WMA

JVC KD-G321 - 1

R·D·S

JVC KD-G321 - 2

JVC WMA MP3 10V 50V 7.0Ω 8.0Ω 9.0Ω 10 11.0Ω 12.0Ω MODE 1 2 3 4 5 6 M SEL DISP 7 8 9 10 11.0Ω 12.0Ω

KD-G321 54/ATT KD-G321 JVC WMA MP3 508x4 7.0Ω 8.0Ω 9.0Ω 10 11.0Ω 12.0Ω MDD SEL DISP 1 2 3 4 5 6 M RDS

For canceling the display demonstration, see page 5.

For installation and connections, refer to the separate manual.

Thank you for purchasing a JVC product.

Please read all instructions carefully before operation, to ensure your complete understanding and to obtain the best possible performance from the unit.

IMPORTANT FOR LASER PRODUCTS

  1. CLASS 1 LASER PRODUCT
  2. CAUTION: Do not open the top cover. There are no user serviceable parts inside the unit; leave all servicing to qualified service personnel.
  3. CAUTION: Visible and invisible laser radiation when open and interlock failed or defeated. Avoid direct exposure to beam.
  4. REPRODUCTION OF LABEL: CAUTION LABEL, PLACED OUTSIDE THE UNIT.
CAUTION : Visible and invisible laser radiation when open and interlock failed or defeated. AVOID DIRECT EXPOSE TO BEAM. (e)ADVARSEL : Synlig og usynlig laserstråling när maskinen er äben eller interlocken fejler. Undgå direkte eksponering til stråling. (d)VARNING : Synlig och osynlig laserstråling när den öppnas och spärren är urkopplad. Betrakta ej strålen. (s)VARO : Avattaessa ja suojalukitus ohitettau tai viällisena olet alttina näkyvälle ja näkymättmälle laserstälilylle. Vältä sätten kohdistumista suoraan itseesi. (f)

Warning:

If you need to operate the unit while driving, be sure to look ahead carefully or you may be involved in a traffic accident.

Caution on volume setting:

Discs produce very little noise compared with other sources. Lower the volume before playing a disc to avoid damaging the speakers by the sudden increase of the output level.

JVC KD-G321 - Caution on volume setting: - 1

How to reset your unit

Diagram showing device port connection before and after assembly, with labeled ports and a pencil pointing to the component.

- Your preset adjustments will also be erased.

JVC KD-G321 - How to reset your unit - 2

How to forcibly eject a disc

I/ATT + Hold...

  • If this does not work, reset your unit.
  • Be careful not to drop the disc when it ejects.

JVC KD-G321 - How to forcibly eject a disc - 2

How to detach/attach the control panel

JVC KD-G321 - How to detach/attach the control panel - 1

natural_image Technical line drawing of a mechanical housing assembly with internal components and directional arrows indicating motion (no text or symbols)

Detaching...
Diagram showing two steps of a door lock mechanism with numbered instructions and directional arrows indicating movement.

Attaching...
Diagram showing a device with labeled parts, including numbered annotations 1 and 2 pointing to specific components.

Note: Only for [EX] model users in UK and European countries

For security reasons, a numbered ID card is provided with this unit, and the same ID number is imprinted on the unit's chassis. Keep the card in a safe place, as it will help the authorities to identify your unit if stolen.

JVC KD-G321 - How to detach/attach the control panel - 4

How to read this manual

  • Button operations are mainly explained with the illustrations in the table below.
  • is used to indicate an indicator is displayed for the corresponding operation.
  • Some related tips and notes are explained in “More about this unit” (see pages 15 – 17).
JVC KD-G321 - How to read this manual - 1Press briefly.
JVC KD-G321 - How to read this manual - 2Press repeatedly.
JVC KD-G321 - How to read this manual - 3JVC KD-G321 - How to read this manual - 4Press either one.
JVC KD-G321 - How to read this manual - 5Press and hold until your desired response begins.
JVC KD-G321 - How to read this manual - 6Press and hold both buttons at the same time.

JVC KD-G321 - How to read this manual - 7

How to use the M MODE button

If you press M MODE, the unit goes into functions mode, then the number buttons and ▲▶▶|/◀◀◀ √ buttons work as different function buttons.

Ex.: When number button 2 works as MO (monaural) button.

MODE M 8 MO 2 USER OUT OF MODE MONO ECG MO USER

Time countdown indicator

To use these buttons for their original functions again after pressing M MODE, wait for 5 seconds without pressing any of these buttons until the functions mode is cleared or press M MODE again.

CONTENTS

Control panel — KD-G322 and KD-G321 ...... 4

Getting started.... 5

Basic operations.... 5

Radio operations 6

FM RDS operations.... 7

Searching for your favorite FM RDS programme ... 7

Disc operations.... 9

Playing a disc in the unit 9

Sound adjustments.... 11

General settings — PSM ...... 12

Maintenance 14

More about this unit 15

Troubleshooting.... 17

Specifications.... 19

This unit is equipped with the steering wheel remote control function.

- See the Installation/Connection Manual (separate volume) for connection.

For safety...

  • Do not raise the volume level too much, as this will block outside sounds, making driving dangerous.
  • Stop the car before performing any complicated operations.

Temperature inside the car...

If you have parked the car for a long time in hot or cold weather, wait until the temperature in the car becomes normal before operating the unit.

Parts identification
Display window 20 21 22 23 24 25 26 WMA MP3 DISC RND RPT LOUD EQ JAZZ CLASSIC HIPHOP TAG 888 27 28 29 30 31 STMO USER TP PTY AF REG 1 2 3 4 5 6 7 8 BAND JVC SOURCE 7 EQ 8 MO 9 SSM 10 11 RPT 12 RND MODE 1 2 3 4 5 6 SEL DISP 9 10 11 12 13 14 15 16 17 18 19

1 ⏻/I/ATT (standby/on/attenuator) button
2 SOURCE button
3 BAND button
4 Loading slot
5 Display window
6 ▲ (eject) button
7 TP/PTY (traffic programme/programme type) button
8 ▲▶▶/|◀◀ √ buttons
9 Control dial
10 SEL (select) button
11 DISP (display) button
12 EQ (equalizer) button
13 MO (monaural) button
14 SSM (Strong-station Sequential Memory) button
15 Number buttons
16 RPT (repeat) button
17 RND (random) button
18 M MODE button
19 (control panel release) button

Display window

20 Disc information indicators—TAG (ID3 Tag), 📋 (folder), 🌐 (track/file)
21 Disc type indicators—WMA, MP3
22 DISC indicator
23 Playback mode / item indicators— RND (random), 📋 (disc), 📄 (folder), RPT (repeat)
24 LOUD (loudness) indicator
25 EQ (equalizer) indicator
26 Sound mode (C-EQ: custom equalizer) indicators—JAZZ, CLASSIC, HIP HOP, POPS, ROCK, USER
27 Tr (track) indicator
28 Source display / Volume level indicator / Time countdown indicator
29 Main display
30 RDS indicators—TP, PTY, AF, REG
31 Tuner reception indicators—ST (stereo), MO (monaural)

Getting started

Basic operations

1 Turn on the power.

JVC KD-G321 - Turn on the power. - 1

JVC KD-G321 - Turn on the power. - 2

flowchart
graph LR
    A["Source"] --> B["FM1/FM2/FM3/AM"]
    B --> C["DISC*"]

* You cannot select "DISC" as the playback source if there is no disc in the unit.

3 For FM/AM tuner

JVC KD-G321 - For FM/AM tuner - 1

flowchart
graph LR
    A["BAND"] --> B["FM1"]
    B --> C["FM2"]
    C --> D["FM3"]
    D --> E["AM"]
    E --> A

4 Adjust the volume.

JVC KD-G321 - Adjust the volume. - 1

Volume level appears.

VOL EQ 20 USER

Volume level indicator

5 Adjust the sound as you want. (See page 11.)

To drop the volume in a moment (ATT)To restore the sound, press it again.JVC KD-G321 - Adjust the sound as you want. (See page 11.) - 1
To turn off the power // JVC KD-G321 - Adjust the sound as you want. (See page 11.) - 2

Basic settings

- See also “General settings — PSM” on pages 12 and 13.

JVC KD-G321 - Basic settings - 1

2

1 Canceling the display demonstrations Select “DEMO,” then “DEMO OFF.”

② Setting the clock Select “CLOCK H” (hour), then adjust the hour. Select “CLOCK M” (minute), then adjust the minute. Select “24H/12H,” then “24H” (hour) or “12H” (hour).

3 Finish the procedure.

JVC KD-G321 - Finish the procedure. - 1

To check the current clock time while...

The power is turned offJVC KD-G321 - Finish the procedure. - 2
Listening to...JVC KD-G321 - Finish the procedure. - 3
An FM (non-RDS) or AM station: Frequency ↔ Clock
An FM RDS station: Station name (PS) → Station Frequency → Programme type (PTY) → Clock → (back to the beginning)

Radio operations

1 SOURCE FM1/FM2/FM3/AM DISC

JVC KD-G321 - Radio operations - 2

flowchart
graph LR
    A["②"] --> B["BAND"]
    B --> C["FM1"]
    B --> D["FM2"]
    B --> E["FM3"]
    B --> F["AM"]
    F --> G["→"]

Lights up when receiving an FM stereo broadcast with sufficient signal strength.

OFFICE FMI 08:3 EQ ST USER

Selected band appears.

3 Start searching for a station.

JVC KD-G321 - Start searching for a station. - 1

When a station is received, searching stops.

To stop searching, press the same button again.

To tune in to a station manually

In step ③ above...

1
JVC KD-G321 - To tune in to a station manually - 1

EQ M USER

2 Select the desired station frequencies.

JVC KD-G321 - To tune in to a station manually - 3

When an FM stereo broadcast is hard to receive

MODE M 8 MO 2 MONO 150 MO USER

Lights up when monaural mode is activated.

Reception improves, but stereo effect will be lost.

To restore the stereo effect, repeat the same procedure. “MONO OFF” appears and the MO indicator goes off.

Storing stations in memory

You can preset six stations for each band.

■ FM station automatic presetting—SSM (Strong-station Sequential Memory)

1 Select the FM band (FM1 - FM3) you want to store into.

JVC KD-G321 - ■ FM station automatic presetting—SSM (Strong-station Sequential Memory) - 1

flowchart
graph LR
    A["BAND"] --> B["FM1"]
    B --> C["FM2"]
    C --> D["FM3"]
    D --> E["AM"]
    E --> A

JVC KD-G321 - ■ FM station automatic presetting—SSM (Strong-station Sequential Memory) - 2

JVC KD-G321 - ■ FM station automatic presetting—SSM (Strong-station Sequential Memory) - 3

SSM EQ

“SSM” flashes, then disappears when automatic presetting is over.

Local FM stations with the strongest signals are searched and stored automatically in the FM band.

Manual presetting

Ex.: Storing FM station of 92.5 MHz into preset number 4 of the FM1 band.

1
JVC KD-G321 - Manual presetting - 1

flowchart
graph LR
    A["BAND"] --> B["FM1"]
    B --> C["FM2"]
    C --> D["FM3"]
    D --> E["AM"]

2
JVC KD-G321 - Manual presetting - 2

out at out FM1 92.5

3
JVC KD-G321 - Manual presetting - 4

Preset number flashes for a while.
92.5 P4

Listening to a preset station

1
JVC KD-G321 - Listening to a preset station - 1

flowchart
graph LR
    A["BAND"] --> B["FM1"]
    B --> C["FM2"]
    C --> D["FM3"]
    D --> E["AM"]

2

Select the preset station (1 - 6) you want.

7 EQ 8 MO 9 SSM 10 11 RPT 12 RND 1 2 3 4 5 6

FM RDS operations

What you can do with RDS

RDS (Radio Data System) allows FM stations to send an additional signal along with their regular programme signals.

By receiving the RDS data, this unit can do the following:

  • Programme Type (PTY) Search (see the following)
    • TA (Traffic Announcement) and PTY Standby Receptions (see pages 8 and 13)
  • Tracing the same programme automatically —Network-Tracking Reception (see page 9)
    • Programme Search (see page 13)

Searching for your favorite FM RDS programme

You can tune in to a station broadcasting your favorite programme by searching for a PTY code.

- To store your favorite programme types, see page 8.

1
JVC KD-G321 - Searching for your favorite FM RDS programme - 1
The last selected PTY code appears.
2

Select one of your favorite programme types.

7 EQ 8 MO 9 SSM 10 11 RPT 12 RND 1 2 3 4 5 6 or

Select one of the PTY codes (see page 8).

JVC KD-G321 - Searching for your favorite FM RDS programme - 3

To be continued...

3

Start searching for your favorite programme.

JVC KD-G321 - Start searching for your favorite programme. - 1

If there is a station broadcasting a programme of the same PTY code as you have selected, that station is tuned in.

Storing your favorite programme types

You can store six favorite programme types.

Preset programme types in the number buttons (1 to 6):

123456
POP MROCK MEASY MCLASSICSAFFAIRSVARIED

1 Select a PTY code (see page 7).
2 Select the preset number (1 - 6) you want to store into.

7 EQ 8 MO 9 SSM 10 11 RPT 12 RND 1 2 3 4 5 6 Hold.... Rock M ↔ MEMORY

Ex.: When "ROCK M" is selected

3 Repeat steps 1 and 2 to store other PTY codes into other preset numbers.
4 Finish the procedure.

JVC KD-G321 - Storing your favorite programme types - 2

PTY codes

NEWS, AFFAIRS, INFO, SPORT, EDUCATE, DRAMA, CULTURE, SCIENCE, VARIED, POP M (music), ROCK M (music), EASY M (music), LIGHT M (music), CLASSICS, OTHER M (music), WEATHER, FINANCE, CHILDREN, SOCIAL, RELIGION, PHONE IN, TRAVEL, LEISURE, JAZZ, COUNTRY, NATION M (music), OLDIES, FOLK M (music), DOCUMENT

Using the standby receptions

TA Standby Reception

TA Standby Reception allows the unit to switch temporarily to Traffic Announcement (TA) from any source other than AM.

The volume changes to the preset TA volume level if the current level is lower than the preset level (see page 13).

To activate TA Standby Reception

JVC KD-G321 - To activate TA Standby Reception - 1

The TP (Traffic Programme) indicator either lights up or flashes.

  • If the TP indicator lights up, TA Standby Reception is activated.
  • If the TP indicator flashes, TA Standby Reception is not yet activated. (This occurs when you are listening to an FM station without the RDS signals required for TA Standby Reception.)
    To activate TA Standby Reception, tune in to another station providing these signals. The TP indicator will stop flashing and remain lit.

To deactivate the TA Standby Reception

JVC KD-G321 - To deactivate the TA Standby Reception - 1

The TP indicator goes off.

PTY Standby Reception

PTY Standby Reception allows the unit to switch temporarily to your favorite PTY programme from any source other than AM.

To activate and select your favorite PTY code for PTY Standby Reception, see page 13.

The PTY indicator either lights up or flashes.

  • If the PTY indicator lights up, PTY Standby Reception is activated.
  • If the PTY indicator flashes, PTY Standby Reception is not yet activated.

To activate PTY Standby Reception, tune in to another station providing these signals. The PTY indicator will stop flashing and remain lit.

To deactivate the PTY Standby Reception, select “OFF” for the PTY code (see page 13).

The PTY indicator goes off.

Tracing the same programme—Network-Tracking Reception

When driving in an area where FM reception is not sufficient enough, this unit automatically tunes in to another FM RDS station of the same network, possibly broadcasting the same programme with stronger signals (see the illustration below).

When shipped from the factory, Network-Tracking Reception is activated.

To change the Network-Tracking Reception setting, see “AF-REG” on page 12.

Programme A broadcasting on different frequency areas (01 - 05)

JVC KD-G321 - Tracing the same programme—Network-Tracking Reception - 1

flowchart
graph TD
    A["Car"] --> B["Route to Road"]
    B --> C["01"]
    B --> D["02"]
    B --> E["03"]
    B --> F["04"]
    B --> G["05"]

Disc operations

Playing a disc in the unit

JVC KD-G321 - Playing a disc in the unit - 1

natural_image Line drawing of a CD or DVD disc with an arrow indicating direction (no text or symbols)

All tracks will be played repeatedly until you change the source or eject the disc.

To stop play and eject the discJVC KD-G321 - Playing a disc in the unit - 2
To fast-forward or reverse the trackJVC KD-G321 - Playing a disc in the unit - 3
To go to the next or previous tracksJVC KD-G321 - Playing a disc in the unit - 4
To go to the next or previous folders (only for MP3 or WMA discs)JVC KD-G321 - Playing a disc in the unit - 5

To go to the next or previous folders (only for MP3 or WMA discs)

To locate a particular track (for CD) or folder (for MP3 or WMA discs) directly

To select a number from 01 - 06:

7 EQ 8 MO 9 SSM 10 11 RPT 12 RND 1 2 3 4 5 6

To select a number from 07 - 12:

7 EQ 8 MO 9 SSM 10 11 RPT 12 RND 1 2 3 4 5 6 Hold...

- To use direct folder access on MP3/WMA discs, it is required that folders are assigned with 2-digit numbers at the beginning of their folder names—01, 02, 03, and so on.

To select a particular track in a folder (for MP3 or WMA disc):

JVC KD-G321 - To locate a particular track (for CD) or folder (for MP3 or WMA discs) directly - 3

Prohibiting disc ejection

You can lock a disc in the loading slot.

SOURCE + Hold...

DISC EJECT USER

To cancel the prohibition, repeat the same procedure.

Changing the display information

JVC KD-G321 - Changing the display information - 1

While playing an audio CD or a CD Text

JVC KD-G321 - While playing an audio CD or a CD Text - 1

flowchart
graph TD
    A["A"] --> B["B"]
    B -->|Disc title / performer*1| C["Track title*1"]
    C --> D["Note"]
    D --> E["Feedback to Track"]

While playing an MP3 or a WMA disc

- When “TAG DISP” is set to “TAG ON” (see page 13)

JVC KD-G321 - While playing an MP3 or a WMA disc - 1

flowchart
graph TD
    A["A"] --> B["B"]
    B --> C["Album name / performer (folder name*2)"]
    C --> D["TAG"]
    D --> E["TAG"]
    E --> F["Track title (file name*2)"]

- When "TAG DISP" is set to "TAG OFF"

JVC KD-G321 - While playing an MP3 or a WMA disc - 2

flowchart
graph TD
    A["A"] --> B["B"]
    B --> F["Folder name"]
    F --> G["File name"]
    G --> H["Music Icon"]

A : Elapsed playing time with the current track number

B : Clock with the current track number

*1 If the current disc is an audio CD, "NO NAME" appears.
*2 If an MP3/WMA file does not have ID3 tags, folder name and file name appear. In this case, the TAG indicator will not light up.

Selecting the playback modes

You can use only one of the following playback modes at a time.

JVC KD-G321 - Selecting the playback modes - 1

2 Select your desired playback mode.

■ Repeat play

JVC KD-G321 - ■ Repeat play - 1

Mode Plays repeatedly

TRK RPT : The current track. ⓇRPT

FLDR RPT ^*3 : All tracks of the current folder. ☐RPT

RPT OFF : Cancels.

■ Random play

JVC KD-G321 - ■ Random play - 1

Mode Plays at random

FLDR RND ^*3 : All tracks of the current folder, then tracks of the next folder and so on. RND

DISC RND : All tracks of the current disc. RND

RND OFF : Cancels.

*3 Only while playing an MP3 or a WMA disc.

Sound adjustments

You can select a preset sound mode suitable to the music genre (C-EQ: custom equalizer).

1
JVC KD-G321 - Sound adjustments - 1

2
7 EQ I USER → ROCK → CLASSIC JAZZ ← HIP HOP ← POPS

LOUD EQ ROCK R ROCK

Ex.: When "ROCK" is selected

Indication (For)\Preset valuesBAS(bass)TRE(treble)LOUD(loudness)
USER(Flat sound)0000OFF
ROCK(Rock or disco music)+03+01ON
CLASSIC(Classical music)+01-02OFF
POPS(Light music)+04+01OFF
HIP HOP(Funk or rap music)+0200ON
JAZZ(Jazz music)+02+03OFF

Adjusting the sound

You can adjust the sound characteristics to your preference.

1
JVC KD-G321 - Adjusting the sound - 1

flowchart
graph LR
    A["SEL"] --> B["BAS"]
    A --> C["TRE"]
    A --> D["FAD"]
    A --> E["VOL"]
    A --> F["LOUD"]
    A --> G["BAL"]

2
JVC KD-G321 - Adjusting the sound - 2

Indication, [Range]

BAS^*4 (bass), [-06 to +06] Adjust the bass.

TRE ^*4 (treble), [-06 to +06] Adjust the treble.

FAD ^*5 (fader), [R06 to F06] Adjust the front and rear speaker balance.

BAL (balance), [L06 to R06] Adjust the left and right speaker balance.

LOUD*4 (loudness), [LOUD ON or LOUD OFF] Boost low and high frequencies to produce a well-balanced sound at low volume level.

VOL (volume), [00 to 30 or 50*6] Adjust the volume.

*4 When you adjust the bass, treble, or loudness, the adjustment you have made is stored for the currently selected sound mode (C-EQ) including “USER.”
*5 If you are using a two-speaker system, set the fader level to “00.”
*6 Depending on the amplifier gain control setting. (See page 13 for details.)

General settings — PSM

You can change PSM (Preferred Setting Mode) items listed in the table that follows.

1
JVC KD-G321 - General settings — PSM - 1

2 Select a PSM item.
JVC KD-G321 - General settings — PSM - 2

3 Adjust the PSM item selected.
JVC KD-G321 - General settings — PSM - 3
4 Repeat steps 2 and 3 to adjust other PSM items if necessary.

5 Finish the procedure.
JVC KD-G321 - General settings — PSM - 4

*1 Depends on the amplifier gain control.
*2 Some characters or symbols will not be shown correctly (or will be blanked) on the display.

IndicationsSelectable settings, [reference page]
DEMO Display demonstrationDEMO ON : [Initial]; Display demonstration will be activated automatically if no operation is done for about 20 seconds, [5]. DEMO OFF : Cancels.
CLOCK H Hour adjustment0 - 23 (1 - 12), [5] [Initial: 0 (0:00)]
CLOCK M Minute adjustment00 - 59, [5] [Initial: 00 (0:00)]
24H/12H Time display mode12H ≡ 24H, [5] [Initial: 24H]
CLK ADJ Clock adjustmentAUTO : [Initial]; The built-in clock is automatically adjusted using the CT (clock time) data in the RDS signal. OFF : Cancels.
AF-REG Alternative frequency/regionalization receptionWhen the received signals from the current FM RDS station become weak... AF : [Initial]; Switches to another station (the programme may differ from the one currently received), [9]. • The AF indicator lights up. AF REG : Switches to another station broadcasting the same programme. • The AF and REG indicators light up. OFF : Cancels.
PTY-STBYPTY standbyActivates PTY Standby Reception with one of the PTY codes, [8].OFF [Initial] → PTY codes, [8] → (back to the beginning)
TA VOLTraffic announcement volume[Initial: VOL 15]; VOL 00 — VOL 30 or 50*1, [8]
P-SEARCHProgramme searchON : Using the AF data, the unit tunes in to another frequency broadcasting the same programme as the original preset RDS station is if the preset station signals are not sufficient.OFF : [Initial]; Cancels.
DIMMERDimmerON : Dims the display illumination of this unit.OFF : [Initial]; Cancels.
TELTelephone mutingMUTING 1/MUTING 2 : Select either one which mutes the sounds while using a cellular phone.OFF : [Initial]; Cancels.
SCROLL^*2 ScrollONCE : [Initial]; Scrolls the disc information once.AUTO : Repeats scrolling (5-second intervals in between).OFF : Cancels.• Pressing DISP for more than one second can scroll the display regardless of the setting.
TAG DISPTag displayTAG ON : [Initial]; Shows the ID3 tag while playing MP3/WMA tracks, [10].TAG OFF : Cancels.
AMP GAINAmplifier gain controlYou can change the maximum volume level of this unit.LOW PWR : VOL 00 – VOL 30 (Select this if the maximum power of the speaker is less than 50 W to prevent them from damaging the speaker.)HIGH PWR: [Initial]; VOL 00 – VOL 50
IF BANDIntermediate frequency bandAUTO : [Initial]; Increase the tuner selectivity to reduce interference noises between close stations. (Stereo effect may be lost.)WIDE : Subject to the interference noises from adjacent stations, but sound quality will not be degraded and maintains the stereo effect.

Maintenance

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.

JVC KD-G321 - How to clean the connectors - 1

natural_image Line drawing of a device with a handle and internal components (no text or symbols)

Connector

Moisture condensation

Moisture may condense on the lens inside the CD player in the following cases:

• After starting the heater in the car.
- If it becomes very humid inside the car.
Should this occur, the CD player may malfunction. In this case, eject the disc and leave the unit turned on for a few hours until the moisture evaporates.

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.

Center holder

• Always hold the disc by the edges. Do not touch its record
When storing a disc into its case, gently insert the disc around the center holder (with the printed surface facing up).
- Make sure to store discs into the cases after use.

JVC KD-G321 - How to handle discs - 1

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.

JVC KD-G321 - To keep discs clean - 1

- Do not use any solvent (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.

JVC KD-G321 - To play new discs - 1

To remove these rough spots, rub the edges with a pencil or ball-point pen, etc.

Do not use the following discs:

Warped disc

JVC KD-G321 - Do not use the following discs: - 1

Sticker

JVC KD-G321 - Do not use the following discs: - 2

Sticker residue

Disc

JVC KD-G321 - Do not use the following discs: - 3

Stick-on label

More about this unit

Basic operations

Turning on the power

- By pressing SOURCE 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 disc, disc play will start from where playback has been stopped previously, next time you turn on the power.

Tuner operations

Storing stations in memory

  • During SSM search...
  • All previously stored stations are erased and stations are stored newly.
    – Received stations are preset in No. 1 (lowest frequency) to No. 6 (highest frequency).
  • When SSM is over, the station stored in No. 1 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.

FM RDS operations

  • Network-Tracking Reception requires two types of RDS 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 12.)

  • If you want to know more about RDS, visit «http://www.rds.org.uk».

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 and WMA formats.
  • MP3 and WMA “tracks” (words “file” and “track” are used interchangeably) are recorded in “folders.”
  • When a disc has been loaded, selecting “DISC” for the playback source starts disc play.

Inserting a disc

  • When a disc is inserted upside down, the disc automatically ejects.
  • Do not insert 8 cm discs (single CD) and unusual shape discs (heart, flower, etc.) into the loading slot.

Playing a disc

- While fast-forwarding or reversing on an MP3 or WMA disc, you can only hear intermittent sounds.

To be continued...

Playing a CD-R or CD-RW

  • Use only "finalized" CD-Rs or CD-RWs.
  • This unit can play back only files of the same type which are first detected 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 occurs on the lens inside the unit.
  • The pickup lens inside the unit is dirty.
  • CD-R/CD-RW on which the files are written with “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 protective seal stuck to the surface.

- Discs on which labels can be directly printed by an ink jet printer.

Using these discs under high temperatures or high humidities 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 <.mp3> or <.wma> (regardless of the letter case—upper/lower).
  • This unit can show the names of albums, artists (performer), and ID3 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
  • The maximum number of characters for file/folder names vary among the disc format used (includes 4 extension characters—<.mp3> or <.wma>).
    – 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, of 200 folders, and of 8 hierarchies.

- This unit can play back files recorded in VBR (variable bit rate).

Files recorded in VBR have a discrepancy in elapsed time display, and do not show the actual elapsed time. Especially, after performing the search function, this difference becomes noticeable.

- This unit cannot play back the following files:

- MP3 files encoded with MP3i and MP3 PRO format. - MP3 files encoded in an inappropriate format.

- MP3 files encoded with Layer 1/2.

- WMA files encoded with lossless, professional, and voice format.

- WMA files which are not based upon Windows Media® Audio.

- WMA files copy-protected with DRM.

- Files which have the data such as WAVE, ATRAC3, etc.

- The search function works but search speed is not constant.

Changing the source

  • If you change the source, playback also stops (without ejecting the disc).
    Next time you select “DISC” for the playback source, disc play starts from where it has been stopped previously.

Ejecting a disc

- If the ejected disc is not removed within 15 seconds, the disc is automatically inserted again into the loading slot to protect it from dust. (Disc will not play this time.)

General settings—PSM

- 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.”

Troubleshooting

What appears to be trouble is not always serious. Check the following points before calling a service center.

SymptomsRemedies/Causes
GeneralSound 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 2).
FM/AMSSM automatic presetting does not work.Store stations manually.
Static noise while listening to the radio.Connect the aerial firmly.
Disc playbackDisc 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 be neither played back nor ejected.Unlock the disc (see page 10).Eject the disc forcibly (see page 2).
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.

To be continued...

SymptomsRemedies/Causes
MP3/WMA playbackDisc cannot be played back.Use a disc with MP3/WMA tracks recorded in the format compliant with ISO 9660 Level 1, Level 2, Romeo, or Joliet.Add the extension code <.mp3> or <.wma> to the file names.
Noise is generated.Skip to another track or change the disc. (Do not add the extension code <.mp3> or <.wma> to non-MP3 or WMA tracks.)
A longer readout time is required (“CHECK” keeps flashing on the display).Do not use too many hierarchies and folders.
Tracks do not play back in the order you have intended them to play.Playback order is determined when the files are recorded.
Elapsed playing time is not correct.This sometimes occurs during play. This is caused by how the tracks are recorded on the disc.
“NO FILES” appears on the display.Insert a disc that contains MP3/WMA tracks.
Correct characters are not displayed (e.g. album name).This unit can only display alphabets (upper case), numbers, and a limited number of symbols.
  • Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

AUDIO AMPLIFIER SECTION

Maximum Power Output:

Front: 50 W per channel

Rear: 50 W per channel

Continuous Power Output (RMS):

Front: 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion.

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: ±10 dB at 100 Hz

Treble: ±10 dB at 10 kHz

Frequency Response: 40 Hz to 20 000 Hz

Signal-to-Noise Ratio: 70 dB

Line-Out Level/Impedance:

2.5 V/20 kΩ load (full scale)

Output Impedance: 1 kΩ

Other terminals: Steering wheel remote input

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

Capture Ratio: 1.5 dB

[MW Tuner]

Sensitivity: 20 μV

Selectivity: 35 dB

[LW Tuner]

Sensitivity: 50 μV

CD PLAYER SECTION

Type: Compact disc player

Signal Detection System: Non-contact optical pickup (semiconductor laser)

Number of Channels: 2 channels (stereo)

Frequency Response: 5 Hz to 20 000 Hz

Dynamic Range: 96 dB

Signal-to-Noise Ratio: 98 dB

Wow and Flutter: Less than measurable limit

MP3 Decoding Format:

MPEG1/2 Audio Layer 3

Max. Bit Rate: 320 kbps

WMA (Windows Media® Audio) Decoding

Format:

Max. Bit Rate: 192 kbps

GENERAL

Power Requirement:

Operating Voltage:

DC 14.4 V (11 V to 16 V allowance)

Grounding System: Negative ground

Allowable Operating Temperature:

0^ to +40^

Dimensions (W × H × D):

Installation Size (approx.):

182 mm × 52 mm × 150 mm

Panel Size (approx.):

188 mm × 58 mm × 11 mm

Mass (approx.):

1.2 kg (excluding accessories)

Design and specifications are subject to change without notice.

natural_image Technical line drawing of a mechanical housing assembly with internal components and directional arrows indicating motion (no text or symbols)

Détachement...

Diagram showing two steps of installing a door panel, labeled with numbered instructions and an arrow indicating direction.

Attachment...
Diagram showing two labeled parts (1 and 2) with arrows indicating direction or movement, likely illustrating a mechanical or electrical component assembly.

natural_image Diagram of a mechanical component with rotation arrows and polarity signs (no text or symbols)

JVC KD-G321 - GENERAL - 3

flowchart
graph LR
    A["2"] --> B["BAND"]
    B --> C["FM1"]
    B --> D["FM2"]
    B --> E["FM3"]
    B --> F["AM"]
natural_image Line drawing of a CD or DVD disc with an arrow indicating direction (no text or symbols)

DISC CD EJECT ECO USER

natural_image Line drawing of a device with an open lid and internal components (no text or symbols)

Connecteur

Having TROUBLE with operation?

Please reset your unit

Refer to page of How to reset your unit

Table of contents Click a title to access it
Manual assistant
Powered by Anthropic
Waiting for your message
Product information

Brand : JVC

Model : KD-G321

Category : Car stereo