JVC XV-NA70BK, XV-NA77SL Service Manual

XA011200310

SERVICE MANUAL

DVD AUDIO/VIDEO PLAYER

XV-NA70BK,XV-NA77SL

Area Suffix (XV-NA70BK)

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

Area Suffix (XV-NA77SL)

J -------------------------- U.S.A.
C --------------------- Canada
B -------------------------- U.K.
E ------ Continental Europe
EN ------- Northern Europe
EV --------- Eastern Europe

TV DVD

STANDBY/ON

OPEN/

TV DVD

CLOSE

TV1 TV2 TV3

2

1

TV4 TV5 TV6

5

4

TV7 TV8 TV9

8

7

TV-/-- TV0 MUTING

010 +10

TITLE/
GROUP

U

N

E

CH

M

+

P

O

T

VOL VOL+

ENTER

C

CH

H

O

I

C

E

SELECTCLEAR

-

SLOW

3D

PHONIC

SUB TITLE

ANGLE

AUDIO

fs/Rate

REPEAT

DIMMER

3

6

9

TV/VIDEO
CANCELRETURN PAGE

M

C

S

N

O

NEXTPREVIOUS

SLOW+

VFPZOOM

PROGRESSIVE

SCAN

AMP
VOL

E

N

U

N

E

E

R

EE ---- Russian Federation
A -------------------- Australia
UF ---------------------- China
UJ ------------- U.S.A.Militaly
US ---------------- Singapore
UW ----- Brazil,Mexico,Peru

TABLE OF CONTENTS

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

2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED

No.XA011

2003/10

SPECIFICATION

For U.S.A.

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), MP3/WMA
format, JPEG, 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 16 W (POWER ON), 2.0 W (STANDBY mode)
Mass 2.1 kg (4.7 lbs)
Dimensions (W × H × D) 435 mm × 45 mm × 270.5 mm

(17-3/16 inch × 2-13/16 inch × 10-11/16 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/176.4kHz):2 Hz to 88 kHz
Dynamic range 16 bit: More than 100 dB

20 bit/24 bit: More than 110 dB
Wow and flutter Unmeasurable (less than ± 0.002%)
Total harmonic distortion 16 bit: less than 0.0018%

20 bit/24 bit: less than 0.0012%

• Specifications and appearance are subject to change without prior notice.

• 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.

1-2 (No.XA011)

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 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, 1,000Ω 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

1500 10W

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.XA011)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 dio de) 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 sh eet) 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 transpo rt and before install ation, 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.XA011)

1.7 Importance administering point on the safety

B114

B204

CN861

B141

EP951

B702

B132

C981

R951

C980

RA1

B801

CN862

RA2

B306

B119

B106

B205

EP954

B110

C904

C905

P901

B407

FC901

FC902

C902

B701

B137

B506

B802

B210

C918

B401

Q951

B108
B111

L953

C963

C907

R901

C908

R910

D901

L901

D851

B213

X851

B112

B207

R904

R902

B402

D903

IC901

C913

R912

C914

R905

R906

R907

R903

D904

R915

PC901

B503

B113

B501

B214

C853

B301

B202

C861

D852

R854

B304

B121

C850

B105

B308

B505

B116

B115

B203

B107

B109

Q852

B303

B302

D956

C964

D957

D954

C967

B405

T901

C906

C950

C951

B221

B208
B206

B404

B403

D952

D951

R954

CP951

C955

C953

D960

B406

IC904

CN901

B305

D905

B504

B310

B309

B311

B120

B602

B502

EP953

B104

L954

L955

D955

C958

D953

CN902

B209

B122

CN651

B603

L952

C952

L951

B507

C959

C988

R664

C684

C683

B123

C680

C678

B129

B128 B127

B131

B601

CN904

J851

L851

C965

L852

C966

B312

R662 R663

B211

Q612

R665

C691

C693

C695

B130

B135
B138

C672

C674

C676

B126

S601

B125

CN903

S901

B134

B133

B313

B201

B307

J603

B140

Q611

C670

R691

R693

R692

C681

B212

R694

R658

B124

B139

R679
R680

R655

J601

B136

EP952

Full Fuse Replacement Marking

Graphic symbol mark
(This symbol means fast blow type fuse.)

should be read as follows ;

FUSE CAUTION

FOR CONTINUED PROTECTION AGAINST RISK
OF FIRE, REPLACE ONLY WITH SAME TYPE
AND RATING OF FUSES ;

F901 : 1.6 A / 125 V F901 : 1.6 A / 125 V

Marquage Pour Le Remplacement
Complet De Fusible

Le symbole graphique (Ce symbole signifie
fusible de type a fusion rapide.)

doit etre interprete comme suit ;

PRECAUTIONS SUR LES FUSIBLES

POUR UNE PROTECTION CONTINUE CONTRE
DES RISQUES D'INCENDIE, REMPLACER
SEULEMENT PAR UN FUSIBLE DU MEME TYPE ;

(No.XA011)1-5

1.8 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 and PRINT

ADVARSEL: Usynlig laser-

stråling ved åbning, når
sikkerhedsafbrydere er ude
af funktion. Undgå udsæt­telse for stråling (d)

laser­l

ADV

ä

r

ARS

str

EL:

åling ved

Us

sikkerhedsa

ynlig

lase

åbning

af funktion.

r-

fbrydere er ude

, n

telse for strå

VA

å
r

RO:

U
ndgå

A

jalukitus ohitettaessa

v

ud

attaessa

ling

s
æt-

alttiina n

ja suo-

(d)

lasersäteilylle.

ä
kymätt

s

ole

ä

teeseen.

t

öm

älle

Ä

l
ä
katso

(f)

The inside of a chassis base

CAUTION: Invisible laser
radiation when open and
interlock failed or defeated.
AVOID DIRECT EXPOSURE
TO BEAM. (e)

VARNING: Osynlig laser­strålning när denna del är
öppnad och spärren är
urkopplad. Betrakta ej
strålen. (s)

C

AU

T
IO

radiatio

N
:

In

visible

n

interlock failed or defeated

whe

n op

laser

AVOID DIRECT EXPOSUR

en
and

TO BEAM.

.
E

(e)

VARNING:

str

å

O

lning nä

s

ynlig

öppnad

r denna de

urkoppla

och

sp

str

d. Be

ärren

å

len.

trakta ej

är

(s)

VARO: Avattaessa ja suo­jalukitus ohitettaessa olet
alttiina näkymättömälle
lasersäteilylle. Älä katso
säteeseen. (f)

1-6 (No.XA011)

1.9 Precautions for Service

1.9.1 Handling of Traverse Unit and Laser Pic kup

(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.

1.9.2 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) Please be sure to make the switch of a relay board into the "SHORT" side before drawing out a wire from the connector CN101

on a servo control board,
when taking out a mechanism assembly from a main body.
And please be sure to make a switch into the "OPEN" side after connecting a wire to CN101, when it mounts a mechanism as-

sembly in a main body.
(4) After removing the flexible wire from the connector (CN1
(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.

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

The procedure for protecting a pickup

The switch on a relay board is
changed from "OPEN" to "SHORT."

Short circuit

A wire is extracted from the
connector CN101 on a servo control
board.

It solders to the short circuit part on a
flexible wire, and it is made to short­circuit.

A flexible wire is extracted from the
connector CN1 on a relay board.

In case you assemble, please do all work conversely.

Short circuit

CN1

Relay board

(No.XA011)1-7

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-8 (No.XA011)