JVC UXP5R2 Service Manual

SERVICE MANUAL

MICRO COMPONENT SYSTEM

UX-P5R

COMPACT

DIGITAL AUDIO

CD-R/RW PLAYBACK

STANDBY/ON

DISPLAYDIMMER

AUTO

SOUND

FM MODE

PRESET

MODE

CANCEL MULTI KEY SET

PTY

DISPLAY

/EON

MODE

AHB

VOLUME

PRO

RM-SUXP5R REMOTE CONTROL

MICRO COMPONENT SYSTEM UX·P5R

STANDBY / ON

AHB PRO

CD TAPE FM/AM

STANDBY/ON

SLEEP

MD/AUX

REPEATRANDOMPROG

FM/AM

TAPE

DIRECT OPERATING

FUNCTION

SOUND

PHONES

REC

AUTO REVERSE

CLOCK

MD/AUX

VOLUME

TIMER

REV.MODE

REC

UX-P5R

Contents

Safety precautions Preventing static electricity Important for laser products Disassembly method Main adjustment Flow of functional operation until TOC read (CD)

1-2 1-4 1-6 1-7 1-15

1-19

Area Suffix

Continental Europe

E EN

Maintenance of laser pickup Replacement of laser pickup Description of major ICs Internal connection of display

U.K.

Northern Europe

1-20 1-20 1-21 1-40

This service manual is printed on 100% recycled paper.

No.20917

1-1

Mar. 2001

UX-P5R

1. This design of this product contains special hardware 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 circuitr y 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 manufacturer`s 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 re-assembling.

5. Leakage currnet check (Electrical shock hazard testing) After re-assembling 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 outlet. 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, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F 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 eachexposed metal part, particularly any exposed metal part having a return path to the chassis, and meausre 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.).

0.15 F AC TYPE

1500 10W

Good earth ground

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

Place this probe on each exposed metal part.

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 m ust 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 v oltage.

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.

In regard with component parts appearing on the silk-screen pr inted 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. (Except the JC version)

1-2

UX-P5R

(U.K only)

2. Any unauthorised design alterations or additions will void the manufacturer's guarantee ; further more the manufacturer cannot accept responsibility f or 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 manual. Please note

however that many electrical 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 shock and fire hazard. When service is required, the or iginal lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling.

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.

1-3

UX-P5R

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.

1.1. Grounding to prevent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players. Be careful to use proper grounding in the area where repairs are being performed.

1.1.1. Ground the workbench

1. 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.

1.1.2. Ground yourself

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

(caption) Anti-static wrist strap

Conductive material (conductive sheet) or iron plate

1.1.3. Handling the optical pickup

1. 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.)

2. 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.

1.2. 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. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it

1-4

UX-P5R

1.3. Cautions on removing the CD traverse unit

* For removing the CD traverse unit in detail, refer to the "Adjustment Method" section of this manual.

1. Before disconnecting the flexible wire from the connector CN601 on the CD SERVO board, solder the part shown in the figure below. (Note:If the flexible wire is disconnected from the CN601 without presoldering, it may cause breakdown of the CD pickup assembly.)

2. When reassembling the CD traverse unit, be sure to remove the solder from the soldered part after reconnecting the flexible wire to the CN601.

CD SERVO board

B618

D831

B617

C832

CN606

LMCLSW GND OPSW LM+

M.GND SW10 SW10 CLOSE OPEN OPSW CLSE CD+B CD+B CDL A.GND A.GND CDR

MUTE FLAG SCD SCD CDDG CDDG BLKCK /REST MLD MDATA MCLK CDDG SUBQ SQCK /RST STAT

R831

L831

CN652

C658

116

B602

CN651

R654

R802

R813

C801

C823

W605 31

C833

C831

C824

Q801

R821

R801

C811

C816

C814

B607

B606

B605

B601

R691

R701

R705

IC802

R692

R666

C677

C673

R665

R695

R696

C656

C655

C657

R653

C672 C671 C670

R806

R655

R656

R658

C653

B611

R657

R659

B612

R805

C813

R807

R808

R809

R822

R824

R823

C812

IC801

R803

R804

R812

C802

B608

C815

R636

115

CN601

F-T-T+F+GNDVRLDMDT2KF1NCT1SRF2

C654

C821

R651

R652

R601

R602

C652

X651

C651

R667

R681

C676

R682

C822

CN601

R670

C669

D601

C667

C668

C680

C681

B613

C612

C610 R683

C607

C643

R642

C641

C642

C605

C606

R641

R643

R603

R604

B609

C679

R664

R669

R685

R607

B619

B610

C665

R684

R663

C664

C663

R648

C616

C614

C617

IC601

171632

R620

C601

CD SERVO board

R708

R710

R706

R703

C691

B603

C695

C699

R709

C693

IC652

B604

B614

C694

C696

R707

R702

R704

C692

R661

R668

C661

A.GND

R662

ARF

B615

C621

R647

C613

C620

C622

R617

C615

C611

C619

R612

R613

C631

C624

C623

B616

C632

Q631

D602

R632

R631

R634

R635

CN801

C633

FMD.GND SM+

C602

C603

C604

R621

R605

R606

R610

R611

SMREST

FM+

R618

R619

T02

Soldering part

CN601

1-5

UX-P5R

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 laserradiation and is equipped with safety switches whichprevent 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.

VARNING : Osynlig laserstrålning är denna del är öppnad

och spårren är urkopplad. Betrakta ej strålen.

VARO : Avattaessa ja suojalukitus ohitettaessa olet

alttiina näkymättömälle lasersäteilylle.Älä katso säteeseen.

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.

CAUTION

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

ADVARSEL : Usynlig laserstråling ved åbning , når

sikkerhedsafbrydere er ude af funktion. Undgå udsættelse for stråling.

ADVARSEL : Usynlig laserstråling ved åpning,når

sikkerhetsbryteren er avslott. unngå utsettelse for stråling.

REPRODUCTION AND POSITION OF LABELS

WARNING LABEL

1-6

UX-P5R

Disassembly method

Removing the metal cover

(See Fig.1 and 2)

Remove the six screws A on the back of the body.

Remove the two screws B on the side of the body.

Pull both sides of the metal cover outward and lift the rear part of the cover.

Removing the rear cover (See Fig.3)

Prior to performing the following procedure, remove the metal cover.

Metal cover

Fig.1

Metal cover

Remove the two screws C on the back of the body.

Fig.2

Rear panel

Rear cover

Fig.3

1-7

UX-P5R

Removing the tuner board

(See Fig.4 and 5)

Prior to performing the following procedure, remove the metal cover.

Disconnect the card wire from connector CN1 on the tuner board.

Remove the screw D on the right side of the body.

Remove the two screws E on the rear panel.

Removing the CD mechanism assembly (See Fig.6 to 8)

Prior to performing the following procedure, remove the metal cover and the rear cover.

Disconnect the card wires from connector CN903, CN904 and the wire from CN905 on the main board on the upper side of the body.

Rear panel

Fig.4

CN1

Tuner board

Rear cover

Remove the screw D attaching the tuner board and the CD mechanism on the right side of the body.

Remove the two screws F attaching the rear panel and the CD mechanism on the back of the body.

Move the rear part of the CD mechanism assembly upwards to disengage the two joints a and release from the rear panel.

Pull the front panel toward the front and move the rear part of the CD mechanism assembly upwards. Then pull out the CD mechanism assembly from the front panel backward.

REFERENCE:

To remove the CD mechanism assembly efficiently, disconnect the card wireconnecting the tuner board with the main board in advance.

Main board

CN905

CN904

CN903

Front panel assembly

CD mechanism assembly

Fig.5

Rear panel

CD mechanism assembly

Fig.6

Tuner board

Card wires

1-8

Front panel assembly

Fig.7

UX-P5R

Remove the rear panel (See Fig.8 to 11)

Prior to performing the following procedure, remove the metal cover, rear cover and the CD mechanism assembly.

Remove the seven screws G attaching the rear panel.

Disconnect the card wire from CN902 on the main board.

Disengage the lower two joints b on each side of the rear panel using a screwdriver and remove the rear panel backward (The tuner board and the fan will be also detached.Remove them as needed).

Removing the fan (See Fig.9 and 12)

Prior to performing the following procedure, remove the metal cover, the rear cover andthe CD mechanism assembly.

Disconnect the wire from connector CN908 on the main board.

Remove the two screws H on the back of the body.

Move the fan upwards to disengage the four joints c and release from the rear panel.

Rear panel

Main board

CN908

CN902

Joint a

Fig.8

Fig.9

Fan

Joint a

Rear panel

Tuner board

Joint c

Rear panel

Fan

Joint c

Rear panel

Joint b

Fig.10

Rear panel

Fig.11Fig.12

1-9

UX-P5R

Removing the power amplifier board / power amplifier sub board / main board / heat sink (See Fig.13 to 21)

Prior to performing the following procedure, remove the metal cover, the rear cover, the CD mechanism assembly and the rear panel.

Disconnect the card wire from connector CN900, CN901, CN933 and CN931 on the main board respectively.

Disconnect the wire from connector CN949, CN950 and CN951 on the power supply board.

Remove the two screws I on the right side of the body.

Move the boards and heat sink assembly upwards and disengage the joint d and the two joints e to release the power amplifier board and the main board from the chassis (Refer toFig.15 and 16).

Move the rear part of the board and heat sink assembly to the right side.

CN931

Front panel assembly

Power supply board

Main board

CN900

CN933

CN901

CN931

CN901

Fig.13

CN900

CN933

CN949 / CN950 / CN951

Main board

Power supply board

CN949

CN950 CN951

CAUTION:

The wire extending from the lower side of the main board is still connected with the body (Refer to Fig.17).

Disconnect the wire from connector CN906 and W950 on the lower side of the main

board (Refer to

Fig.18).

Main board

Front panel assembly

Fig.14

Front panel assembly

Joints e

Fig.15

Heat sink

1-10

Power amplifier board

Heat sink

Power amplifier board

Chassis

Fig.16Fig.17

Joint d

UX-P5R

Removing the power amplifier board

(See Fig.19 and 21)

Disconnect the power amplifier board from connector CN941 on the power amplifier sub board.

Removing the power amplifier sub board (See Fig.19 to 21)

Disconnect the two wires from connector CN944, CN945, CN946 and CN947 on the power amplifier sub board.

Remove the two screws J attaching the power amplifier sub board and the heat sink.

Removing the main board

(See Fig.19 to 21)

Disconnect the wires from connector CN944, CN945, CN946 and CN947 on the power amplifier sub board.

Main board

W950

Fig.18

CN906

Heat sink

10.

Remove the two screws K attaching the main board and the heat sink.

REFERENCE:

The power amplifier board, the power amplifier sub board, the main board and the heat sink can be remove drespectively.

Heat sink

Power amplifier sub boar

Power amplifier board

Fig.19

Main board

Heat sink

Main board

Power amplifier sub boar

Power amplifier board

CN944

CN945

CN947

Power amplifier board

CN946

Power amplifier sub board

CN941

Fig.20Fig.21

1-11

UX-P5R

Removing the power transformer assembly (See Fig.22 and 23)

Prior to performing the following procedure, remove the metal cover, the rear cover, the CD mechanism assembly and the rear panel.

Remove the assembly consisting of the power amplifier board, the power amplifier sub board and the main board fromthe chassis incompletely (Refer to Fig.17).

Remove the cord stopper upwards on the back of the body.

Disconnect the power cord from connector J1000 on the board of the power transformer assembly.

Remove the four screws L attaching the power transformer assembly.

Removing the front panel assembly

(See Fig.24 and 25)

Prior to performing the following procedure, remove the metal cover, the rear cover, the CD mechanism assembly and the rear panel.

Power transformer assembly

Power cord

Cord stopper

J1000

Cord stopper

Fig.22

Power cord

J1000

Remove the assembly consisting of the power amplifier board, the power amplifier sub board and the main board (Refer to Fig.17 and 18).

Remove the two screws M on each lower side of the body.

Disengage the two joints f on each lower side of the body using a screwdriver andpull out the front panel assembly toward the front.

Front panel assembly

Power transformer assembly

Fig.23

Front panel assembly

1-12

Joint f

Fig.24Fig.25

UX-P5R

Removing the display board / switch board (See Fig.26 to 28)

Prior to performing the following procedure, remove the front panel assembly.

Pull out the VOLUME knob on the front panel.

Remove the fifteen screws N on the back of the front panel and remove the display board with the switch board.

Remove the screw O attaching the switch board to the LCD holder.

If necessary, unsolder the wire connected to connector FW931 on the display board and FW931 on the switch board.

If necessary, remove the band bundling the wire extending from the headphone board and display board.

Front panel assembly

Fig.26

Switch board

VOLUME knob

Display board

FW931

Band

Fig.27

Switch board

Fig.28

1-13

+ 28 hidden pages