JVC XV-S62SL Manuale utente

SERVICE MANUAL

DVD VIDEO PLAYER

No.A0018

Sep. 2001

XV-S62SL

Area Suffix

US ---------- Singapore

UF -------------- China

UB ------- Hong Kong

This service manual is printed on 100% recycled paper.

Contents

Safety precautions ------------------------ 1-2

Preventing static electricity ------------- 1-3

Precautions for service ----------------- 1-4

Important for laser products ----------- 1-5

Disassembly method -------------------- 1-6

Adjustment method ---------------------- 1-15

Troubleshooting -------------------------- 1-19

Description of major ICs ---------------- 1-23

Glossary of term and abbreviations -- 1-42

XV-S62SL

1-2

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 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 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 current 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 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. 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.

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

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 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.

(Except the J and C version)

XV-S62SL

1-3

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.

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

Conductive material

(conductive sheet) or iron plate

(caption)

Anti-static wrist strap

XV-S62SL

1-4

Precautions for Service

Handling of Traverse Unit and Laser Pickup

1. Do not touch any peripheral element of the pickup or the actuator.

2. The traverse unit and the pickup are precision devices and therefore must not be subjected to

strong shock.

3. Do not use a tester to examine the laser diode. (The diode can easily be destroyed by the

internal power supply of the tester.)

4. To replace the traverse unit, pull out the metal short pin for protection from charging.

5. When replacing the pickup, after mounting a new pickup, remove the solder on the short land

which is provided at the center of the flexible wire to open the circuit.

6. Half-fixed resistors for laser power adjustment are adjusted in pairs at shipment to match the

characteristics of the optical block.

Do not change the setting of these half-fixed resistors for laser power adjustment.

Destruction of Traverse Unit and Laser Pickup by Static Electricity

Laser diodes are easily destroyed by static electricity charged on clothing

or the human body. Before repairing peripheral elements of the traverse

unit or pickup, be sure to take the following electrostatic protection:

1. Wear an antistatic wrist wrap.

2. With a conductive sheet or a steel plate on the workbench on which

the traverse unit or the pick up is to be repaired, ground the sheet

or the plate.

3. After removing the flexible wire from the connector (CN101),

short-circuit the flexible wire by the metal clip.

4. Short-circuit the laser diode by soldering the land which is provided

at the center of the flexible wire for the pickup.

After completing the repair, remove the solder to open the circuit.

Please refer to "Fig.4" of "Disassembly

method" for details.

Servo control

board

Short circuit

XV-S62SL

1-5

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.

REPRODUCTION AND POSITION OF LABEL and PRINT

WARNING LABEL and PRINT

!Please use enough caution not to

see the beam directly or touch it

in case of an adjustment or operation

check.

CLASS 1

LASER PRODUCT

CAUTION: Invisible laser

radiation when open and

interlock failed or defeated.

AVOID DIRECT EXPOSURE

TO BEAM. (e)

ADVARSEL: Usynlig laser-

stråling ved åbning, når

sikkerhedsafbrydere er ude

af funktion. Undgå udsæt-

telse for stråling (d)

VARNING: Osynlig laser-

strålning när denna del är

öppnad och spärren är

urkopplad. Betrakta ej

strålen. (s)

VARO: Avattaessa ja suo-

jalukitus ohitettaessa olet

alttiina näkymättömälle

lasersäteilylle. Älä katso

säteeseen. (f)

XV-S62SL

1-6

Disassembly method

Removing the top cover (see Fig.1)

Removing the mechanism assembly

(see Fig.2,3)

Removing the servo control board

(see Fig.4)

1.Remove the two screws Aattaching the top cover

on both sides of the body.

2.Remove the three screws Battaching the top cover

on the back of the body.

3.Remove the top cover from the body by lifting the

rear part of the top cover.

ATTENTION: Do not break the front panel tab

fitted to the top cover.

* Prior to performing the following procedure, remove

the top cover.

* There is no need to remove the front panel assembly.

1.Remove the three screws Cattaching the mechanism

assembly on the bottom chassis.

2.The servo control board is removed from the connector

CN512 and CN513 connected with the main board

respectively.

3.Remove the mechanism assembly by lifting the rear part

of the mechanism assembly.

* Prior to performing the following procedure, remove

the top cover and mechanism assembly.

1.Disconnect the card wire from connector CN201 and

CN202 on the servo control board respectively.

2.Disconnect the flexible wire from connector CN101

on the servo control board from pick-up.

ATTENTION

At this time, please extract the wire after short-circuited

of two places on the wire in part awith solder.

Please remove the solder two places of part aafter

connecting the wire with CN101 when reassembling.

3.Two places in hook bare removed, the servo control board

is lifted, and it is removed.

A x 2

Fig.1

Fig.2

CN513 CN512 Servo control

board

Main board

Mechanism assembly

Fig.3

Hook b Hook b

Servo control

board

Fig.4

XV-S62SL

1-7

Removing the rear panel (see Fig.5)

Removing the front panel assembly

(see Fig.6,7)

Removing the main board (see Fig.8)

*Prior to performing the following procedure, remove

the top cover.

1.Remove the nine screws Dattaching the rear panel

on the back of the body.

* Prior to performing the following procedure, remove

the top cover.

* There is no need to remove the mechanism assembly.

1.Remove the one screw Eattaching the front panel

assembly on the bottom chassis.

2.Disconnect the wire from CN3 and JT102,JT202 on

the main board respectively.

3.Hook cand dare removed respectively, and the front

panel assembly is removed.

* Prior to performing the following procedure, remove

the top cover, mechanism assembly and rear panel.

1.Disconnect the wire from CN3 and JT102,JT202 on

the main board respectively.

2.Remove the four screws Fattaching the main board

on the bottom chassis.

DDDD

Rear panel

Fig.5

Hook c

Hook d

Front panel

assembly

Fig.6

Fig.8

Fig.7

XV-S62SL

1-8

Remove the four screws Aattaching the clamper

assembly.

Move the clamper in the direction of the arrow to

release the two joints aon both sides.

Removing the clamper assembly

(See Fig.1)

Prior to performing the following procedure, remove

the clamper assembly.

Push bof the slide cam into the slot on the left side

of the loading base until it stops.

Draw out the tray toward the front.

Removing the tray (See Fig.2 and 3)

When reattaching, fit the clamper to

the two joints a.

ATTENTION:

Before reattaching the tray, slide the

part cof the slide cam to the right as

shown in Fig.3.

ATTENTION:

Joint a

Fig.1

Fig.2

Fig.3

Push

Tray

Clamper base

Part c

Slide cam

XV-S62SL

1-9

Prior to performing the following procedure, remove

the clamper assembly and the tray.

Remove the four screws Battaching the traverse

mechanism assembly.

Removing the traverse mechanism

assembly (See Fig.4 and 5)

Before reattaching the traverse

mechanism assembly, pass the card

wire extending from the spindle motor

board through the notch dof the

elevator.

ATTENTION:

Prior to performing the following procedure, remove

the clamper assembly, the tray and the traverse

mechanism assembly.

Extend each bar einside of the loading base

outward and detach the elevator shaft.

Removing the elevator (See Fig.6 and 7)

When reattaching, first fit the two

shafts on the front of the elevator to

the slots fof the slide cam.

ATTENTION:

Fig.4

Fig.5

Fig.6Fig.7

Traverse mechanism

assembly

Traverse mechanism assembly

Elevator

Notch d

Elevator

Loading base

Elevator

Shafts

Slide cam

Slots f

XV-S62SL

1-10

Prior to performing the following procedure, remove

the clamper assembly, the tray, the traverse

mechanism assembly and the elevator.

Remove the belt from the pulley.

Remove the screw Cattaching the motor assembly.

Turn over the body and remove the screw D

attaching the motor assembly.

Release the two tabs gretaining the motor board.

Removing the motor assembly

(See Fig.8 and 9)

Fig.8

Fig.9

Motor assembly

Belt

Loading base

Motor assembly

Tabs g

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