JVC UX-P30 Service Manual

MB049200311

SERVICE MANUAL

MICRO COMPONENT SYSTEM

UX-P30

CD-R/RW PLAYBACK

SLEEP

DISPLAY

REPEATRANDOMPROG

AUTO

SOUND

FM MODE

PRESET

MODE

CD

CD

CANCEL MULTI KEY SET

PTY

DISPLAY

/EON

MODE

AHB

VOLUME

RM-SUXP3R REMOTE CONTROL

MICRO COMPONENT SYSTEM UX-P30

STANDBY/ON

AUX

FM/AM

TAPE

STANDBY

CD

TAPE

FM/AM

/

CLOCK TIMER

PHONES

AUX

SOUND

AHB PRO

U

L

M

O

E

V

+

Ð

REV.MODE

REC

SP-UXP30 SP-UXP30

CA-UXP30

Area Suffix

B --------------------------- U.K.
E ------- Continental Europe
EN --------- Northern Europe

TABLE OF CONTENTS

1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED

No.MB049

2003/11

SPECIFICATION

Amplifier Output Power 44 W (22 W + 22 W) at 4 Ω (MAX.)

40 W (20 W + 20 W) at 4 Ω (10 % THD)
Audio input sensitivity/Impedance (at 1 kHz) AUX : 400 mV/48 kΩ
Speakers/Impedance 4 Ω - 16 Ω

Tuner FM tuning range 87.50 MHz - 108.00 MHz

AM (MW) tuning range 522 kHz - 1 629 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 - 14 000 Hz

Wow and flutter 0.15 % (WRMS)

Speaker Speaker units Woofer : 8 cm cone × 1

Tweeter : 2 cm cone × 1
Impedance 4 Ω
Dimensions (approx.) 160 mm × 256 mm × 197 mm (W/H/D)
Mass (approx.) 2.1 kg each

General Power requirement AC 230 V, 50 Hz

Power consumption 50 W (at operation)

3.8 W (on standby)
Dimensions (approx.) 505 mm × 256 mm × 294 mm (W/H/D)
Mass (approx.) 8.5 kg

Design and specifications are subject to change without notice.

1-2 (No.MB049)

SECTION 1

PRECAUTION

1.1 Safety Precautions

(1) This design of th is product contains special hardw are and

many circuits and components specially for safety purpos­es. 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 per­formed 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 characteris­tics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by us­ing replacement components rated for higher voltage, watt­age, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Ser­vice 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 charac­teristics 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 reassem­bling.

(5) Leakage shock hazard testing

After reassembling the product, always perform an isola­tion check on the exposed metal parts of the product (an­tenna 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 ou tlet. Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal parts of the cabinet, particular­ly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage cur­rent 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, 1,000Ω per volt or more sensitivity
in the following manner. Connect a 1,500Ω 10W 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.).

AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)

0.15 F AC TYPE

Place this
probe on

Good earth ground

1.2 Warning

(1) This equipment has been designed and manufactured to

meet international safety standards.

(2) It is the legal resp onsibility 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 compone nts 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 pre­forming 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)

each exposed
metal part.

(No.MB049)1-3

1.5 Safety Precautions (U.K only)

(1) This design of this product contains special hardware and many circuits and components specially for safety purposes. For con-

tinued 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.

(2) Any unauthorised design alterations or additions will void the manufacturer's guara ntee; furthermore the manu facturer cannot

accept responsibility for personal injury or property damage resulting therefrom.

(3) Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must never

be replaced by parts other than those listed in the man ual. Please note however that many el ectrical and mechanical parts in
the product have special safety related characteristics. These characteristics are often not evident from visual inspection. Parts
other than specified by the manufacturer may not have the same safety characteristics as the recommended replacement parts
shown in the Parts List of the Service Manual and 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 sh ock and fire ha zard. When se rvice is
required, the original lead routing and dress should be observed, and it should be confi rmed that they have been returned to
normal, after re-assembling.

1.5.1 Warning

(1) Service should be performed by qualified personnel only.
(2) This equipment has been designed and manufactured to meet international safety standards.
(3) It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
(4) Repairs must be made in accordance with the relevant safety standards.
(5) It is essential that safety critical components are replaced by approved parts.
(6) If mains voltage selector is provided, check setting for local voltage.

Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.

1-4 (No.MB049)

1.6 Preventing static electricity

C

rt

1

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.

1.6.1 Grounding to p revent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
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 conducti ve 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.

(caption)
Anti-static wrist strap

1M

Conductive material
(conductive sheet) or iron palate

(3) Handling the optical pickup

• In order to maintain quality during tran sport and before installatio n, both sides of the laser diod e on the replacement o ptical
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.

1.7 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.

1.8 Attention when traverse unit is decomposed *Please refer to "Disassembly method" in the text for the CD pickup unit.

• Apply solder to the short land sections before the flexible wire is disconnecte d from the connecto r CN101 on the CD servo board.
(If the flexible wire is disconnected without applying solder, the CD 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.

D SERVO board

CN601

CD SERVO board

R708

B618

D831

1

B601

R691

R701

R705

B617

CN606

LM­CLSW
GND
OPSW
LM+

M.GND
SW10
SW10
CLOSE
OPEN
OPSW
CLSE
CD+B

CN652

CD+B
CDL
A.GND
A.GND
CDR

MUTE
FLAG
SCD

B602

SCD
CDDG
CDDG
BLKCK
/REST
MLD
MDATA
MCLK
CDDG
SUBQ
SQCK
/RST

1

STAT

W605
31

IC802

C832

51

C833

R831

C831

13

L831

C658

116

C657

C672
C671

CN651

C670

B612

R805

R806

C824

Q801

BE

R654

R821

12

13

C801

C811

R813

R801

R802

C823

C816

R636

C814

B607

B606

B605

X651

R692

C677

R666

C673

C656

R695

R696

R665

C651

61

1

C655

21

R653

C654

R651

R652

R655

R656

R658

C653

R601

R602

B611

R657

R659

C813

R807

R808

R809

R822

R824

R823

C812

1

IC801

C821

24

C802

R803

R804

R812

B608

C815

115

CN601

F-T-T+F+GNDVRLDMDT2KF1NCT1SRF2

C652

R667

R681

41

C676

R682

C822

R710

R706

C691

R703

R670

C669

C679

D601

C665

R669

R664

C667

C668

C680

B614

R684

C681

R685

R663

C664

C663

R662

R648

C615

C616

R607

B613

C612

C614

C610

C617

R683

C607

C643

C641

C642

R642

IC601

171632

B619

R620

R603

R604

C605

C606

R641

R643

R619

B610

C601

B609

B603

C695

C699

R709

C693

IC652

B604

C696

C694

R707

R702

R704

C692

R668

R661

C661

A.GND

ARF

B615

C621

R617

C613

C620

C622

R647

R612

R613

C611

C619

C631

1

C624

C623

BE

B616

C632

Q631

C

D602

R632

R631

R634

R635

1

CN801

C633

FM­D.GND
SM+

R605

R606

R610

R611

R621

C602

C603

C604

SM­REST

6

FM+

R618

CN60

T02

Soldering pa

(No.MB049)1-5

1.9 Important for laser products

1.CLASS 1 LASER PRODUCT

2.DANGER : Invisible laser radiation when open and inter

lock failed or defeated. Avoid direct exposure to beam.

3.CAUTION : There are no serviceable parts inside the

Laser Unit. Do not disassemble the Laser Unit. Replace

the complete Laser Unit if it malfunctions.

4.CAUTION : The compact disc player uses invisible laser

radiation and is equipped with safety switches which

prevent emission of radiation when the drawer is open and

the safety interlocks have failed or are de

feated. It is dangerous to defeat the safety switches.

5.CAUTION : If safety switches malfunction, the laser is able

to function.

6.CAUTION : Use of controls, adjustments or performance of

procedures other than those specified herein may result in

hazardous radiation exposure.

!

Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.

REPRODUCTION AND POSITION OF LABEL and PRINT

WARNING LABEL

1-6 (No.MB049)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

(No.MB049)1-7

SECTION 3

A

A

DISASSEMBLY

3.1 Main body

3.1.1 Removing the metal cover
(See Fig.1 and 2)

(1) Remove the six screws A on the back of the body.
(2) Remove the two screws B on the side of the body.
(3) Pull both sides of the me tal cover outward and lift the re ar

part of the cover.

Metal cover

A

3.1.2 Removing the rear cover
(See Fig.3)

• Prior to performing the fo llowing proce dure, remove the metal

cover.
(1) Remove the two screws C on the back of the body.

A

Metal cover

B

x2

A

Fig.1

Fig.2

1-8 (No.MB049)

C

Rear panel

C

Rear cover

Fig.3

3.1.3 Removing the tuner board

(See Fig.4 and 5)

• Prior to performing the following procedure, remove the metal

cover.
(1) Disconnect the card wire from connector CN1

board.
(2) Remove the screw D on the right side of the body.
(3) Remove the two screws E on the rear panel.

on the tuner

E

D

CN1

Fig.4

Tuner board

Rear panel

Rear cover

Fig.5

(No.MB049)1-9