JVC MA372IEN user service Symptoms Remedies/Causes General

General settings—PSM

Enter PSM menu. Select an item. Adjust. Finish

Indication	Item ( : Initial)		Setting
DEMO	•	DEMO ON	:	The display demonstration will be activated automatically if no operation is
				done for about 20 seconds.
	•	DEMO OFF	:	Cancels.
CLK DISP*1	•	ON	:	The clock time is shown on the display at all times when the power is turned
				off.
	•	OFF	:	Cancels; pressing DISP will show the clock time for about 5 seconds when the
				power is turned off.
CLOCK H (Hour)	1 – 12		:	[Initial: 1 (1:00)]
CLOCK M (Minute)	00 – 59		:	[Initial: 00 (1:00)]
DIMMER	•	ON	:	Dims the display and button illumination.
	•	OFF	:	Cancels.
SCROLL	•	ONCE	:	Scrolls the displayed information once.
	•	AUTO	:	Repeats scrolling (at 5-second intervals).
	•	OFF	:	Cancels.
			•	Pressing DISP for more than one second can scroll the display regardless of
				the setting.
AUX ADJ	A.ADJ 00		:	Adjust the auxiliary input level to avoid the sudden increase of the output
	– A.ADJ 05			level when changing the source from external component connected to the
				AUX input jack on the control panel.
TAG DISP	•	TAG ON	: Shows the tag while playing MP3/WMA tracks.
(for KD-G394)	•	TAG OFF	:	Cancels.
AMP GAIN*2	•	LOW PWR	: VOL 00 – VOL 30 (Select if the maximum power of each speaker is less than
				50 W to prevent the speaker from being damaged.)
	•	HIGH PWR	: VOL 00 – VOL 50

*1 If the power supply is not interrupted by turning off the ignition key of your car, it is recommended that you select “OFF” to save the car’s battery.

*2 The volume level automatically changes to “VOL 30” if you change to “LOW PWR” while the volume level is set higher than “VOL 30.”

TROUBLESHOOTING

	Symptoms	Remedies/Causes
General	• Sound cannot be heard from the speakers.	• Adjust the volume to the optimum level.
		• Check the cords and connections.
	• This unit does not work at all.	Reset the unit.
FM/AM	• SSM automatic presetting does not work.	Store stations manually.
	• Static noise while listening to the radio.	Connect the antenna firmly.
	• Disc ejects.	Insert the disc correctly.
	• CD-R/CD-RW cannot be played back.	• Insert a finalized CD-R/CD-RW.
	• Tracks on the CD-R/CD-RW cannot be	• Finalize the CD-R/CD-RW with the component which you used
	skipped.	for recording.
Disc playback
	• Disc can be neither played back nor ejected.	• Unlock the disc.
		• Eject the disc forcibly.
	• 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.

	• 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 <.mp3> or <.wma> to the file names.
G394)-
	•	Noise is generated.	code <.mp3> or <.wma> to non-MP3 or WMA tracks.)
			Skip to another track or change the disc. (Do not add the extension
(for KD
	•	A longer readout time is required	Do not use too many hierarchical levels and folders.
playback		(“READING” keeps flashing on the display).
MP3/WMA	• Tracks are not played back in the order you		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
		have intended.
			tracks are recorded on the disc.
	• The correct characters are not displayed		This unit can only display alphabets (upper case), numbers, and a
		(e.g. album name).	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.

INSTRUCTIONS

SPECIFICATIONS

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 60 Hz
	Mid-range: ±12 dB at 1 kHz
	Treble:	±12 dB at 7.5 kHz
Frequency Response:	40 Hz to 20 000 Hz
Signal-to-Noise Ratio:	70 dB
KD-G394: Line-Out Level/Impedance:
	2.5 V/20 kΩ load (full scale)
KD-G394: Output Impedance:		1 kΩ
Other Terminal:	AUX (auxiliary) input jack

Tuner section

Frequency Range:

FM: 87.5 MHz to 108.0 MHz

AM: 531 kHz to 1 602 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

[AM Tuner]

Sensitivity/Selectivity: 20 μV/35 dB

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:	93 dB
Signal-to-Noise Ratio:	98 dB
Wow and Flutter:	Less than measurable limit
KD-G394: MP3 Decoding Format (MPEG1/2 Audio Layer 3):
	Max. Bit Rate: 320 kbps
KD-G394: 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°C to +40°C Dimensions (W × H × D):

Installation Size (approx.):

182 mm × 52 mm × 160 mm Panel Size (approx.):

188 mm × 58 mm × 5 mm Mass (approx.):

1.3 kg (excluding accessories)

Design and specifications are subject to change without notice.

PREPARATION

This unit is designed to operate on 12 V DC, NEGATIVE ground electrical systems. If your vehicle does not have this system, a voltage inverter is required, which can be purchased at JVC car audio dealers.

Prepare this before installation

WARNINGS

To prevent short circuits, we recommend that you disconnect the battery’s negative terminal and make all electrical connections before installing the unit.

• Be sure to ground this unit to the car’s chassis again after installation.

Notes:

•Replace the fuse with one of the specified rating. If the fuse blows frequently, consult your JVC car audio dealer.

•It is recommended to connect to the speakers with maximum power of more than 50 W (both at the rear and at the front, with an impedance of 4 Ω to

8 Ω). If the maximum power is less than 50 W, change “AMP GAIN” setting to prevent the speakers from being damaged (see “General settings—PSM”).

•To prevent short-circuit, cover the terminals

of the UNUSED leads with insulating tape.

• The heat sink becomes very hot after use. Be careful not to touch it when removing this unit.

Heat sink

TROUBLESHOOTING

• The fuse blows.

* Are the red and black leads connected correctly?

•Power cannot be turned on. * Is the yellow lead connected?

•No sound from the speakers.

* Is the speaker output lead short-circuited?

• Sound is distorted.

*Is the speaker output lead grounded?

*Are the “–” terminals of L and R speakers grounded in common?

• Noise interfere with sounds.

*Is the rear ground terminal connected to the car’s chassis using shorter and thicker cords?

• This unit becomes hot.

*Is the speaker output lead grounded?

*Are the “–” terminals of L and R speakers grounded in common?

•This unit does not work at all. * Have you reset your unit?

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