JVC XV-N510B, XV-N512S Service Manual

SERVICE MANUAL

DVD AUDIO/VIDEO PLAYER

YD01620048

XV-N510B,XV-N512S

Area Suffix

J ------------------------ U.S.A.
C --------------------- Canada

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XV-N510BJC, XV-N510BCC, XV-N512SJC, XV-N512SCC

TABLE OF CONTENTS

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

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

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

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

COPYRIGHT © 2004 Victor Company of Japan, Limited

No.YD016

2004/8

SPECIFICATION

XV-N510B,XV-N512S for J,C

General

Readable discs DVD AUDIO, DVD VIDEO, DVD-R (Video format), DVD-RW (Video format/VR format), DVD-RAM (VR

format), SVCD, Video CD, Audio CD (CD-DA), CD-R/RW (CD-DA, SVCD, Video CD, MP3/WMA format,
JPEG)

Video format REMOTE, 480i (Interlaced scan)/480p (Progressive scan) selectable

Other

Power requirements AC 120 V~, 60 Hz
Power consumption 13 W (POWER ON), 2.0 W (STANDBY mode)
Mass 1.9 k g (4.2 lbs)

Dimensions (W × H × D) 435 mm× 44 mm × 258.6 mm ((17-3/16 inch × 1-3/4 inch × 10-3/16 inch)

Video outputs

COMPONENT (pin jacks) Y Output: 1.0 Vp-p (75 Ω)

PB/PR Output: 0.7 Vp-p (75 Ω)
VIDEO OUT (pin jack) 1.0 Vp-p (75 Ω)
S-VIDEO OUT (S jack) Y Output: 1.0 Vp-p (75 Ω)

C Output: 286 mVp-p (75 Ω)

Horizontal resolution 500 lines or more

Audio outputs

ANALOG OUT (pin jack) 2.0 Vrms (10 kΩ)
DIGITAL OUT (COAXIAL) 0.5 Vp-p (75 Ω termination)

DIGITAL OUT (OPTICAL) -21 dBm to -15 dBm (peak)

Audio characteristics

Frequency response CD (sampling frequency 44.1 kHz):2 Hz to 20 kHz

DVD (sampling frequency 48 kHz):2 Hz to 22 kHz

(4 Hz to 20 kHz for DTS and Dolby Digital bitstream signals)

DVD (sampling frequency 96 kHz):2 Hz to 44 kHz

DVD (sampling frequency 192 kHz/176.4 kHz):2 Hz to 88 kHz
Dynamic range 16 bit: More than 98 dB

20 bit/24 bit: More than 106 dB
Wow and flutter Unmeasurable (less than +- 0.002%)
Total harmonic distortion 16 bit: less than 0.006%

20 bit/24 bit: less than 0.005%

* Notes for PX model (Check the specification indication on the rear panel.)

Power requirements AC 110 V to 240 V , 50 Hz/60 Hz
Power consumption 13 W (POWER ON), 2.0 W(STANDBY mode)

• Manufactured under license from Dolby Laboratories. “Dolby”,”MLP Lossless and the double-D symbol are trademarks of Dolby
Laboratories.

• “DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc.

• This product incorporates copyright protection technology that is protected by U.S. patents and other intellectual property rights. Use
of this copyright protection technology must be authorized by Macrovision, and is intended for home and other limited viewing uses
only unless otherwise authorized by Macrovision. Reverse engineering or disassembly is prohibited.

Digital output signal chart

Disc type

DVD with 48/44.1 kHz, 16/20/24
bit linear PCM
DVD AUDIO with MLP

DVD with 192/176.4/96/88.2 kHz,
16/22/24 bit linear PCM
DVD AUDIO with MLP

DVD with DTS 48 kHz, 16 bit, stereo linear PCM DTS bitstream
DVD with Dolby Digital 48 kHz, 16 bit, stereo linear PCM Dolby Digital bitstream
SVCD/Video CD/Audio CD 44.1 kHz, 16 bit, stereo linear PCM
Audio CD with DTS 44.1kHz, 16 bit, stereo linear PCM DTS bitstream
CD-R/RW with MP3/WMA Linear PCM

PCM ONLY DOLBY DIGITAL/PCM STREAM/PCM

48/44.1 kHz, 16/20/24 bit, stereo linear PCM

48/44.1 kHz, 16/20/24 bit, stereo linear PCM (Down sampling)

Output

1-2 (No.YD016)

SECTION 1

PRECAUTION

1.1 Safety Precautions

(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 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 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 ohm 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.).

1.2 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 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. (Except
the JC version)

(No.YD016)1-3

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 DVD 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 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.

1-4 (No.YD016)

1.7 Precautions for Service

1.7.1 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.

1.7.2 Destruction of Traverse Unit and Laser Pickup by Static Electricity

Laser diodes are easily destroyed by static electricity charged on clothingor 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) It solders to two short circuit sections on the substrate of a pick-up.
(4) After removing the flexible wire from the connector (CN101

), short-circuit the flexible wire by the metal clip.

(5) 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.

Main board

CN101

Gear1

Short circuit Pick-up

*Please refer to the disassembly method for details.

(No.YD016)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-6 (No.YD016)

SECTION 3

TOP COVER

DISASSEMBLY

3.1 Main body section

3.1.1 Removing the top cover (See Figure 1)

(1) Remove the two screws A attaching the top cover on both

sides of the main body.
(2) Remove the three screws B attaching the top cover on the

back of the main body.
(3) Raise the both sides and lower part of the rear of the top

cover, with opening them slightly in an outward direction.

And the top cover will be removed.

A x 2

TOP COVER

TOP COVER

B

Fig.1

B

B

(No.YD016)1-7

3.1.2 Removing the mechanism assembly (See Figure 2, Figure 3, Figure 4)

Push

• Prior to performing the following procedure, remove the top
cover.

• There is no need to remove the front panel assembly.
(1) Insert a kind of screwdriver in a hole located in the right

side of mechanism assembly, and push a lever until it can­not be inserted any further.

(2) And then, a tray will come out. Remove the tray in an upper

direction, with slightly opening the lower part of fitting in an
outward direction.

(3) Remove the three screws C attaching the mechanism as-

sembly.
(4) A tray is made to slide ahead.
(5) A gear 1 is turned counterclockwise. Then, a pick-up unit

moves back.
(6) It solders to two a sections on the pick-up unit.
(7) Disconnect the card wire from connector CN201

on the main board.

CN101

, CN202,

ATTENTION:

Please extract the wire after short-circuited of two places
on the wire in part a with solder. Please remove the sol­der two places of part a after connecting the wire with

when reassembling.

CN101

CAUTION:

Be sure to solder the short land sections “a” on the pick-

CN101

up unit before disconnecting the card wire from connec­tor CN101

on the main board.
If the card wire is disconnected without attaching solder,
the pick-up unit may be destroyed by static electricity.

(8) Remove the mechanism assembly by lifting the rear part of

the mechanism assembly.

Fitting

CN202

Front panel assembly

Mechanism assembly

Tray

Push

Hole and lever

Fig.2

C

C

Main board

CN201Main board

Mechanism assembly

Fig.3

CN101

Gear1

Fig.4

C

Part a

Pick-up

1-8 (No.YD016)