Használati útmutató JVC UX-H30

JVC hi-fi rendszer UX-H30

Olvassa el alább 📖 a magyar nyelvű használati útmutatót JVC UX-H30 (52 oldal) a hi-fi rendszer kategóriában. Ezt az útmutatót 2 ember találta hasznosnak és 2 felhasználó értékelte átlagosan 4.5 csillagra

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Oldal 1/52

SERVICE MANUAL

No.MB024

2003/8

MICRO COMPONENT SYSTEM

MB02420038

UX-H30

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

MICRO COMPONENT SYSTEM

Area Suﬃx

U ---------------- Other Areas

UP ---------------------- Korea

UT --------------------- Taiwan

UW ---- Brazil,Mexico,Peru

1-2 (No.MB024)

SPECIFICATION

Amplifier Output Power 20 W (10 W + 10 W) at 4 Ω (10% THD)

Audio input sensitivity/Impedance (at 1 kHz) AUX 500 mV/48.75 kΩ

Speakers/Impedance 4 Ω

Tuner FM tuning range 87.50 MHz - 108.00 MHz

AM tuning range AM 10 kHz intervals 530 kHz - 1 710 kHz

AM 9 kHz intervals 531 kHz - 1 710 kHz

CD player Dynamic range 85 dB

Signal-to-noise ratio 90 dB

Wow and flutter Immeasurable

Cassette deck Frequency response Normal (type I) 50 Hz - 15 000 Hz

Wow and flutter 0.15% (WRMS)

Speaker Speaker units Full range 8.0 cm cone × 1

Impedance 4 Ω

Dimensions (approx.) 135 mm × 203 mm × 190 mm (W/H/D)

Mass (approx.) 1.7 kg each

General Power requirement AC IN 110 V/ 127 V/ 230 V ,

adjustable with the voltageselector,

50 Hz/ 60 Hz

DC IN 12 V, 4 A

Power consumption 35 W (at operation)

3.0 W (on standby)

Dimensions (approx.) 412 mm × 208 mm × 275 mm (W/H/D)

Mass (approx.) 6.5 kg

(No.MB024)1-3

SECTION 1

PRECAUTION

1.1 Safety Precautions

(1) This design of this product contains special hardware and

many circuits and components specially for safety purpos-

es. For continued protection, no changes should be made

to the original design unless authorized in writing by the

manufacturer. Replacement parts must be identical to

those used in the original circuits. Services should be per-

formed by qualified personnel only.

(2) Alterations of the design or circuitry of the product should

not be made. Any design alterations of the product should

not be made. Any design alterations or additions will void

the manufacturers warranty and will further relieve the

manufacture of responsibility for personal injury or property

damage resulting therefrom.

(3) Many electrical and mechanical parts in the products have

special safety-related characteristics. These characteris-

tics are often not evident from visual inspection nor can the

protection afforded by them necessarily be obtained by us-

ing replacement components rated for higher voltage, watt-

age, etc. Replacement parts which have these special

safety characteristics are identified in the Parts List of Ser-

vice Manual. Electrical components having such features

are identified by shading on the schematics and by ( ) on

the Parts List in the Service Manual. The use of a substitute

replacement which does not have the same safety charac-

teristics as the recommended replacement parts shown in

the Parts List of Service Manual may create shock, fire, or

other hazards.

(4) The leads in the products are routed and dressed with ties,

clamps, tubings, barriers and the like to be separated from

live parts, high temperature parts, moving parts and/or

sharp edges for the prevention of electric shock and fire

hazard. When service is required, the original lead routing

and dress should be observed, and it should be confirmed

that they have been returned to normal, after reassem-

bling.

(5) Leakage shock hazard testing

After reassembling the product, always perform an isola-

tion check on the exposed metal parts of the product (an-

tenna terminals, knobs, metal cabinet, screw heads,

headphone jack, control shafts, etc.) to be sure the product

is safe to operate without danger of electrical shock.Do not

use a line isolation transformer during this check.

• Plug the AC line cord directly into the AC outlet. Using a

"Leakage Current Tester", measure the leakage current

from each exposed metal parts of the cabinet, particular-

ly any exposed metal part having a return path to the

chassis, to a known good earth ground. Any leakage cur-

rent must not exceed 0.5mA AC (r.m.s.).

• Alternate check method

Plug the AC line cord directly into the AC outlet. Use an

AC voltmeter having, 1,000 per volt or more sensitivityΩ

in the following manner. Connect a 1,500Ω 10W resistor

paralleled by a 0.15µF AC-type capacitor between an ex-

posed metal part and a known good earth ground.

Measure the AC voltage across the resistor with the AC

voltmeter.

Move the resistor connection to each exposed metal

part, particularly any exposed metal part having a return

path to the chassis, and measure the AC voltage across

the resistor. Now, reverse the plug in the AC outlet and

repeat each measurement. Voltage measured any must

not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5

mA AC (r.m.s.).

1.2 Warning

(1) This equipment has been designed and manufactured to

meet international safety standards.

(2) It is the legal responsibility of the repairer to ensure that

these safety standards are maintained.

(3) Repairs must be made in accordance with the relevant

safety standards.

(4) It is essential that safety critical components are replaced

by approved parts.

(5) If mains voltage selector is provided, check setting for local

voltage.

1.3 Caution

Burrs formed during molding may be left over on some parts

of the chassis.

Therefore, pay attention to such burrs in the case of pre-

forming repair of this system.

1.4 Critical parts for safety

In regard with component parts appearing on the silk-screen

printed side (parts side) of the PWB diagrams, the parts that are

printed over with black such as the resistor ( ), diode ( )

and ICP ( ) or identified by the " " mark nearby are critical

for safety. When replacing them, be sure to use the parts of the

same type and rating as specified by the manufacturer.

(This regulation dose not Except the J and C version)

Good earth ground

Place this

probe on

each expose

metal part.

AC VOLTMETER

(Having 1000

ohms/volts,

or more sensitivity)

1500 10W

0.15 F AC TYPE

Termékspecifikációk

Márka:	JVC
Kategória:	hi-fi rendszer
Modell:	UX-H30

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