JVC KD-SC945 manual JVC Amplifier, Fuse blows, No sound from the speakers, Sound is distorted

PRECAUTIONS on power supply and speaker connections:

•DO NOT connect the speaker leads of the power cord to the car battery; otherwise, the unit will be seriously damaged.

•Connect the black lead (ground), yellow lead (to car battery, constant 12 V), and red lead (to an accessory terminal) correctly.

•BEFORE connecting the speaker leads of the power cord to the speakers, check the speaker wiring in your car.

–If the speaker wiring in your car is as illustrated in Fig. 1 and Fig. 2 below, DO NOT connect the unit using that original speaker wiring. If you do, the unit will be seriously damaged.

Redo the speaker wiring so that you can connect the unit to the speakers as illustrated in Fig. 3.

–If the speaker wiring in your car is as illustrated in Fig. 3, you can connect the unit using the original speaker wiring in your car.

–If you are not sure of the speaker wiring of your car, consult your car dealer.

•
•
	12V
•
–	1 ￿￿ 2 ￿
	￿￿
	3
–	3
–

	+	+	L	+	+	L	+	+
L
	-	-		-	-		-	-
	+	+		+	+		+	+
R	-	-	R	-	-	R -		-

Fig. 1 Fig. 2 Fig. 3

¢ÈÕ§«√√–«ß— ”À√∫°“√µËÕ·À≈Ë߮˓¬°”≈—ß·≈—–≈”‚æß:

• լ˓µËÕ “¬µ–°«‡§‡∫‘≈°”≈Ë—ß—¢Õß≈”‚æ߇¢È“°∫·∫µ‡µÕ√’Ë√∂¬πµÏ—¡‘©–π— π™ÿÈ ¥ª√–°Õ∫®–‰¥È√∫§«“¡‡— ¬À“¬¡“°’

•µËÕ “¬µ–°—Ë«·µË≈– ’„ÀÈ∂Ÿ°µÈÕß : ’¥” ( “¬¥‘π), ’‡À≈◊Õß (‡¢È“°

∫·∫µ‡µÕ√’Ë√∂¬πµÏ„ÀÈ¡’°”≈—ߧß∑’Ë— 12 ‚«≈∑Ï) ·≈– ’·¥ß (‡¢È“°∫—¢«È— «πª√Ë –°Õ∫)

•°ËÕπ∑’Ë®–µËÕ “¬µ–°«‡§‡∫‘≈°”≈Ë—ß—¢Õß≈”‚æ߇¢È“°∫≈”‚æß—

„Àȵ√«® Õ∫°“√‡¥‘𠓬‰ø≈”‚æß„π√∂¢Õߧÿ≥„Àȇ√’¬∫√ÈÕ¬‡ ¬°ËÕπ’

–À“°°“√‡¥‘𠓬‰ø≈”‚æß„π√∂¢Õߧÿ≥‡ªÁπ‡À¡◊Õπ„π√Ÿª¿“æ∑’Ë

1 ·≈–√Ÿª¿“æ∑’Ë2¥ß—¢È“ß≈Ë“ßπ’È

լ˓µËÕ™ÿ¥ª√–°Õ∫∑’Ë„™È°“√‡¥‘𠓬‰ø≈”‚æß·∫∫¥ß‡È— ¥‘¡ππÈ— ¡‘©– ππ™ÿÈ— ¥ª√–°Õ∫®–‰¥È√∫§«“¡‡— ¬À“¬¡“°’ „ÀÈ®¥—°“√‡¥‘𠓬‰ø≈”‚æß„À¡Ë‡æ◊ËÕ§ÿ≥®– “¡“√∂µËÕ ™ÿ¥ª√– °Õ∫‡¢È“°∫≈”‚æßµ“¡√Ÿª¿“æ∑’Ë—3‰¥È

–À“°°“√‡¥‘𠓬‰ø≈”‚æß„π√∂¢Õߧÿ≥‡ªÁπ‡À¡◊Õπ„π√Ÿª¿“æ∑’Ë

3 §ÿ≥ “¡“√∂µËÕ™ÿ¥ª√–

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–À“°§ÿ≥‰¡Ë·πË„®«Ë“°“√‡¥‘𠓬‰ø≈”‚æß„π√∂¢Õߧÿ≥‡ªÁπ·∫∫„¥ „ÀȪ√÷°…“ºŸÈ¢“¬√∂¬πµÏ¢Õߧÿ≥

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qš«œ UŽUL		Æpð—UOÝ
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Connecting the leads / / µËÕ “¬µ–°«Ë— /„öÝô« qO

Twist the core wires when connecting.

∫‘¥‡ π≈«È ¥·°π‡æ◊ËÕ‡™◊ËÕ¡µËÕ

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Solder the core wires to connect them securely.

‡™◊ËÕ¡∫—¥°√’‡ Èπ≈«¥·°π∑—ÈßÀ¡¥‡¢È“¥È«¬°—π ‡æ◊ËÕ§«“¡ª≈Õ¥¿—¬„π°“√„™Èß“π

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CAUTION / ￿￿ / ¢ÈÕ§«√√–«ß— / tO³Mð

•To prevent short-circuit, cover the terminals of the UNUSED leads with insulating tape.

•°“√ªÈÕß°π°“√≈—¥—«ß®√ ®–µÈÕßæπ—¢«È— “¬µ–°«∑’ˉ¡Ë„™È·≈È«Ë— ¥È«¬‡∑ªæπ— “¬‰ø

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Connections Adding Other Equipment /

You can connect an amplifier to upgrade your car
stereo system.	•

•Connect the remote lead (blue with white stripe) to

	the remote lead of the other equipment so that it	•
	can be controlled through this unit.
		•
•	Connect this unit’s line-out terminals to the
	amplifier’s line-in terminals.
•	Disconnect the speakers from this unit,
	connect them to the amplifier. Leave the
	speaker leads of this unit unused. (Cover the
	terminals of these unused leads with
	insulating tape, as illustrated above.)

/°“√µËÕ‡æ‘Ë¡‡µ‘¡‡¢È“°∫Õÿª°√≥ÏÕ◊Ëπ— Ê / WO

§ÿ≥ “¡“√∂µËÕ·Õ¡ª≈‘ø“¬‡ÕÕ√χæ◊ËÕÕ懰√— ¥√–∫∫‡ µÕ√‘‚Õ„π√∂¬πµÏ				u¹dO²Ý “UNł Y¹bײ	Æpð—UOÝ
•	µËÕ “¬µ–°«√Ë—–¬–‰°≈ ( πÈ”‡ß‘π≈“¬’		¢“«) ‡¢È“°∫— “¬µ–°«√Ë—–¬–	©iOÐôUÐ jD<« ‚—“ô«® bFÐ sŽ rJײ
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				r²¹ YO×Ð dšô« “UN−K
•	µËÕ¢«È—	“¬ÕÕ° ¢Õß™ÿ¥ª√–°Õ∫π’ȇ¢È“°∫—¢«È— “¬‡¢È“ ¢Õ߇§√◊ËÕߢ¬“¬		Æ“UN'« «c¼ ‰öš s
•	∂Õ¥≈”‚æßÕÕ°®“°™ÿ¥ª√–°Õ∫π’È·≈È«µËÕ‡¢È“°—∫‡§√◊ËÕߢ¬“¬			‡ qšœ ·«dÞ« l	•
	∑‘Èß “¬µ–°—Ë«≈”‚æߢÕß™ÿ¥ª√–°Õ∫π’ȉ«È (æ—π¢—È«¢Õß “¬µ–°—			Æ uB
				r	•
	«∑’ˉ¡Ë‰Ë	¥È„™È‡À≈Ë“π’È„ÀÈ√Õ∫¥È«¬‡∑ª æπ— “¬‰ø ¥—ßµ«Õ¬Ë“ß— ¢È“ßµÈπ)		ÊËbÐ “UN'« «c¼ UŽULÝ „öÝ« „dð« Æ	uB
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Amplifier / / ‡§√◊ËÕߢ¬“¬ / uB

Rear speakers

	WOHK)«	≈”‚æßÀ≈ß—
		UŽUL
	INPUT	JVC Amplifier
L	L
		JVC
R	R	‡§√◊ËÕߢ¬“¬‡ ’¬ß JVC
		JVC W

Remote lead

†“¬µ–°Ë«•—–¬–‰°•

bFÐ sŽ rJײ

	Blue with white stripe
*2	†’øÈ“·•–¡’·•••“¬†’¢“«
	iOÐôUÐ jD

Y-connector (not supplied with this unit)

Y

¢ÈÕµËÕ√Ÿªµ«— Y (‰¡Ë‰¥È„ÀÈ¡“°∫™ÿ— ¥ª√–°Õ∫π’È)

©“UN'« l ÒËe Y qÒ

To automatic antenna if any

µËÕ‡¢È“°∫‡— “Õ“°“»Õµ‚π¡—µ‘—∂È“¡’

Signal cord (not supplied with this unit)

błË Ê« wJOðU

“¬‡§‡∫‘≈ ≠≠“≥— (‰¡Ë‰¥È„ÀÈ¡“°∫™ÿ— ¥ª√–°Õ∫π’È)

©“UN'« l ËeÒ

LINE OUT

LL

L

RR R REAR FRONT

KD-SC945

Front speakers

≈”‚æßÀπÈ“

WO

	INPUT	JVC Amplifier	Front speakers
		JVC
L	L

R	R ‡§√◊ËÕߢ¬“¬‡ ’¬ß JVC	≈”‚æßÀπÈ“
	JVC W	WO
		*2

You can connect another power amplifier for front speakers.

∑Ë“π “¡“√∂µËÕ‡§√◊ËÕߢ¬“¬‡ ¬ß’ ”À√∫≈”‚æßÀπÈ“‰— ¥ÈÕ’°‡§√◊ËÕßÀπ÷Ëß

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*2 : Firmly attach the ground wire to the metallic body or to the chassis of the car—to the place not coated with paint (if coated with paint, remove the paint before attaching the wire). Failure to do so may cause damage to the unit.

*2 :

*2 : µËÕ≈«¥ “¬¥‘π„ÀÈ·πËπ‡¢È“°∫µ—«∂—߇À≈Á°— À√◊Õµ«∂—ß√∂— ˙ µ√ß Ë«π ∑’ˉ¡Ë¡’’‡§≈◊Õ∫ (À“°¡’’‡§≈◊Õ∫Õ¬ŸË„ÀÈ¢¥Ÿ ’ÕÕ°°ËÕπ °ËÕπµËÕ≈«¥ “¬¥‘π) À“°‰¡ËªØ‘∫µ‘µ“¡§”·π—–π”π’È ‡§√◊ËÕßÕ“®™”√ÿ¥À√◊Õ‡ ’¬À“¬‰¥È

…—UO	∫≤*
wKD

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TROUBLESHOOTING

°“√µ√«® Õ∫ª≠À“— ¢¥—¢ÈÕß

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•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?

•Unit becomes hot.

*Is the speaker output lead grounded?

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

•

• ø‘« ¢Ï“¥

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