JVC UX-N1SJ Manuale utente

SERVICE MANUAL

2006/3

MICRO COMPONENT SYSTEM

MB51420063

UX-N1SJ,UX-N1SC,UX-N1SB,

UX-N1SE,UX-N1SEN,UX-N1SEV,

UX-N1WJ,UX-N1WC,UX-N1WB,

UX-N1WE,UX-N1WEN,UX-N1WEV

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

TABLE OF CONTENTS

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

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

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

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

CA-UXN1S

for DIGIATLAUDIO PLAYER

IN LINE OUT

SP-UXN1SSP-UXN1S

CA-UXN1W SP-UXN1WSP-UXN1W

1-2 (No.MB514)

SPECIFICATION

Design and specifications are subject to change without notice.

Amplifier section OUTPUT POWER J,C 13 W (6.5 W + 6.5 W) at 4 Ω(10% THD)

other area 10 W (5 W + 5 W) at 4 Ω(10% THD)

Speakers/Impedance 4 Ω- 16 Ω

Audio Input : LINE IN 500 mV/47 kΩ(at "LINE IN LVL1")

250 mV/47 kΩ(at "LINE IN LVL2")

125 mV/47 kΩ(at "LINE IN LVL3")

Audio output : LINE OUT 1.0 Vrms (10 kΩ) (at "LINE OUT LVL1")

2.0 Vrms (10 kΩ) (at "LINE OUT LVL2")

Tuner section FM Tuning range 87.5 MHz - 108.0 MHz

AM Tuning range J,C 530 kHz - 1 710 kHz

other area 522 kHz - 1 629 kHz

CD player section Dynamic range 88 dB

Signal-to-noise ratio 93 dB

Wow and flutter Immeasurable

Speakers Speaker units 8 cm (3-3/16 inch) cone ×1

Impedance 4 Ω

Dimensions (approx.) (W/H/D) 130 mm ×171 mm ×136 mm (5-1/8 inch ×6-3/4 inch ×5-3/8 inch)

Mass (approx.) 0.75 kg (1.7 lbs) each

General Power requirements J,C AC 120 V , 60 Hz

other area AC 230 V , 50 Hz

Power consumption J,C 21.0 W (POWER ON), 3.5 W (STANDBY mode)

3.0 W or less (SAVE mode)

other area 20.0 W (POWER ON), 3.6 W (STANDBY mode)

3.0 W or less (SAVE mode)

Dimensions (W ×H ×D) 270 mm ×68.5 mm ×203 mm (10-11/16 inch ×2-3/4 inch ×8 inch)

Mass 1.8 kg

(No.MB514)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, 1,000Ωper volt or more sensitivity

in the following manner. Connect a 1,500Ω10W resistor

paralleled by a 0.15µF AC-type capacitor between an

exposed 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 exposed

metal part.

AC VOLTMETER

(Having 1000

ohms/volts,

or more sensitivity)

1500 10W

0.15 F AC TYPE

1-4 (No.MB514)

1.5 Preventing static electricity

Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser

diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.

1.5.1 Grounding to prevent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.

Be careful to use proper grounding in the area where repairs are being performed.

(1) Ground the workbench

Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the

traverse unit (optical pickup) on it.

(2) Ground yourself

Use an anti-static wrist strap to release any static electricity built up in your body.

(3) Handling the optical pickup

• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical

pickup are shorted. After replacement, return the shorted parts to their original condition.

(Refer to the text.)

• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily

destroy the laser diode.

1.6 Handling the traverse unit (optical pickup)

(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.

(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the

replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a

time when attaching it to the connector.

(3) Handle the flexible cable carefully as it may break when subjected to strong force.

(4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.

1.7 Attention when traverse unit is decomposed

*Please refer to "Disassembly method" in the text for the pickup unit.

• Apply solder to the short land sections before the flexible wire is disconnected from the connecto on the servo board. (If the flexible

wire is disconnected without applying solder, the pickup may be destroyed by static electricity.)

• In the assembly, be sure to remove solder from the short land sections after connecting the flexible wire.

Conductive material

(conductive sheet) or iron palate

(caption)

Anti-static wrist strap

Short land

CN602

CN601

(No.MB514)1-5

1.8 Importance administering point on the safety

Graphic symbol mark

(This symbol means fast blow type fuse.)

FOR CONTINUED PROTECTION AGAINST RISK

OF FIRE, REPLACE ONLY WITH SAME TYPE

AND RATING OF FUSES ;

should be read as follows ;

F1001 : 500mA 125V

Full Fuse Replacement Marking

FUSE CAUTION

Le symbole graphique (Ce symbole signifie

fusible de type a fusion rapide.)

POUR UNE PROTECTION CONTINUE CONTRE

DES RISQUES D'INCENDIE, REMPLACER

SEULEMENT PAR UN FUSIBLE DU MEME TYPE ;

F1001 : 500mA 125V

Marquage Pour Le Remplacement

Complet De Fusible

PRECAUTIONS SUR LES FUSIBLES

doit etre interprete comme suit ;

fast blow type / type a fusion rapide

C1001

C1004

C1006

C1007

C1008

C3301

CN101

CN103

D1001

D1002

LF101

B1317

Z1001Z1011

RY101

R1001

B1319

D1003

C1003

1-6 (No.MB514)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

(No.MB514)1-7

SECTION 3

DISASSEMBLY

3.1 Main body

3.1.1 Removing the top panel assembly

(See Fig.1 and 2)

(1) Remove the four screws Aattaching the top panel assem-

bly from bottom side. (See Fig.1)

(2) Turn over the main body, lift up the top cover assembly and

disconnect the connector wire from moor motor connected

to connector CN511 of CD and micon board. (See Fig.2)

Fig.1

Fig.2

CN511

1-8 (No.MB514)

3.1.2 Removing the touch board

(See Fig.3)

(1) Take out the three lenses from touch board.

(2) Remove the two screws Battaching the touch board.

(3) Disconnect the card wire from CD and micon board con-

nected to connector CN431 of touch board.

Fig.3

3.1.3 Removing the touch switch and LED board

(See Fig.4)

(1) Removed the three screws Cattaching the touch switch

and LED board.

(2) Disconnect the card wire from CD and micon board con-

nected to connector CN251 of touch switch and LED

board.

Fig.4

Touch board

CN431

Touch switch &

LED board

CN251

(No.MB514)1-9

3.1.4 Removing the LCD board

(See Fig.5)

(1) Remove the two screws Dattaching the LCD board.

(2) Disconnect the card wire connected to connector CN701 of

CD and micon board.

Fig.5

3.1.5 Removing the CD and micon board

(See Fig.6)

(1) Disconnect the connector wire from power and audio board

connected to connector CN707 of CD and micon board.

(2) Disconnect the card wire from power and audio board con-

nected to connector CN703 of CD and micon board.

(3) Disconnect the connector wire connected to connector

CN314 of power and audio board.

(4) Remove the five screws Eattaching the CD and micon

board.

Fig.6

CN221

CN701

CN704

CN316

CN314

CN707

CN703

Ex5

1-10 (No.MB514)

3.1.6 Removing the CD mechanism assembly

(See Fig.7)

(1) Disconnect the connector wire from spindle motor connect-

ed to connector CN602 of CD and micon board.

(2) Solder to short land section of flexible wire and then dis-

connect the flexible wire of pickup connected to connector

CN601 of CD and micon board.

Caution:

• Solder the short land section at the flexible wire of pickup be-

fore disconnecting the flexible wire from the connector on

the CD and micon board. If the flexible wire is disconnected

without attaching solders, the pickup may be destroyed by

static electricity.

• When attaching the CD pickup, be sure to remove solders

from the short land section after connecting the flexible wire

to the connector on the CD and micon board.

Fig.7

3.1.7 Removing the side panel assembly

(See Fig.8)

(1) Remove the three screws Fattaching the side panel as-

sembly from back side.

(2) Disconnect the card wire from tuner pack connected to

connector CN911 of power and audio board.

Fig.8

Short land

CN602

CN601

CN911

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