JVC XVC-5-SL Service manual

SERVICE MANUAL

DVD VIDEO PLAYER

XA00120034

XV-C5SL

Area Suffix

B -------------------------- U.K.
E ------ Continental Europe
EN ------- Northern Europe
EV --------- Eastern Europe
EE ---- Russian Federation
US ---------------- Singapore

Turkey,South Africa,Egypt

UG ­UB --------------- Hong Kong

TV DVD

STANDBY/ON

TV DVD

EJECT DISPLAY

TV22TV11TV3

3

TV55TV44TV6

6

TV88TV77TV9

9

TV00TV-/-10MUTING

+10

TITLE/

TV/VIDEO

RETURN

GROUP

CANCEL

U

M

N

E

E

N

M

CH

U

P

+

O

T

+

–

VOL

VOL

ENTER

C

ANGLE

REPEAT

H

O

I

C

PREVIOUS

SLOW

N

CH

E

E

–

R

C

E

S

N

O

NEXT

SELECTCLEAR

+

–

SLOW

3D

VFP

ZOOM

PHONIC

AUDIO

SUB TITLE

AMP VOL

DIMMER

TABLE OF CONTENTS

1 Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4 Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.

No.XA001

2003/5

SPECIFICATION

General Readable discs DVD VIDEO, DVD-R (Video format),DVD-RW (Video format), +RW(Video

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

Video format PAL

Other Power requirements AC 230 V , 50 Hz

Power consumption 12 W (POWER ON), 0.7 W (STANDBY mode)
Mass 1.7 kg
Dimensions (W x H x D) 218 mm x 58 mm x 270 mm

Video outputs VIDEO OUT (pin jack) 1.0 Vp-p (75 Ω)

Horizontal resolution 500 lines or more
RGB 700 mVp-p (75 Ω)

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

Dynamic range 16 bit: More than 98 dB

20 bit: More than 100 dB

24 bit: More than 100 dB
Wow and flutter Unmeasurable (less than + 0.002%)
Total harmonic distortion less than 0.006%

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

• Manufactured under license from Dolby Laboratories. "Dolby" and the double-D symbol are trademarks of Dolby Laboratories. Con­fidential unpublished works.

• Manufactured under license from Digital Theater Systems, Inc. "DTS," "DTS Digital Surround," are trademarks of Digital Theater
Systems, Inc.

Digital output signal chart

Disc type

DVD with 48 kHz 16/20/24 bit linear PCM 48 kHz 16 bit stereo linear PCM
DVD with 96 kHz 16/20/24 bit linear PCM 48kHz 16 bit stereo linear PCM (Down sampling)

DVD with DTS No output DTS bitstream

DVD with Dolby Digital 48 kHz 16 bit stereo linear PCM Dolby Digital bitstream

DVD with MPEG Multichannel 48 kHz 16 bit stereo linear PCM MPEG bitstream

SVCD/Video CD/Audio CD 44.1 kHz 16 bit stereo linear PCM

Audio CD with DTS No output DTS bitstream

CD-R/RW with MP3 Linear PCM

PCM ONLY DOLBY DIGITAL/PCM STREAM/PCM

Output

1-2 (No.XA001)

SECTION 1

Important Safety Precautions

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.XA001)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.XA001)

1.7 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.

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.

ADVARSEL

Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er
ude af funktion. Undgå udsasttelse for stråling.

ADVARSEL

Usynlig laserstråling ved åpning, når sikkerhetsbryteren er avs­lott. unngå utsettelse for stråling.

REPRODUCTION AND POSITION OF LABEL and PRINT

WARNING LABEL and PRINT

(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 anadjustment or operation check.

CLASS 1
LASER PRODUCT

(No.XA001)1-5

1.8 Precautions for Service

1.8.1 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.

1.8.2 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) 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.

Short circuit

DVD Mechanism

Flexible wire

CN101

DVD Servo control board

CN202

CN201

1-6 (No.XA001)

1.9 Caution on disassembly of the main body

The power supply board is a board at the power supply first level.
Since the pattern side of this board is not covered with anything after removing the bottom cover of the main body, be sure to pull out
the power cord from the wall socket before disassembly and assembly procedure.
If turning the power on without the bottom cover, be careful enough not to touch the power supply board.

Power supply board

(No.XA001)1-7

SECTION 2

Disassembly method

There is a part different from the photograph according to the destination though explains this disassembly method by using XV­C5SL for Eastern Europe.

2.1 Main body section

2.1.1 Removing the bottom cover (See Figure 1, Figure 2)

(1) Remove the three rubber caps on the bottom of the main

body.

*Remove the rubber caps by peeling them with your nails

because they are only inserted in the holes. (See Figure 2)

(2) Remove the three screws A (long) and one screw B (short)

attaching the bottom cover on the bottom of the main body.
(3) Lift the bottom cover, and remove it.

Rubber cap and screw A

Bottom cover

A

Rubber cap and screw BRubber cap and screw A

Fig.1

Rubber cap

Fig.2

Side fitting L

1-8 (No.XA001)

2.1.2 Removing the mechanism assembly (See Figure 3, Figure 4, Figure 5)

• Prior to the following procedure, remove the bottom cover.
(1) Remove the four screws C attaching the bottom plate.
(2) Disconnect the flat wire from the connector CN811 on the

servo control board.

(3) Disconnect the connector wire from the connector CN802

on the FL display board.
(4) Remove the main body from the top cover.
(5) Remove the three screws D attaching the mechanism as-

sembly.
(6) Disconnect the connector wires from the connector CN501

and CN502 on the servo control board.
(7) Disconnect the card wire from the connector CN611 on the

servo control board.

Servo control board

Top cover

Side fitting R

C

Bottom plate

Fig.3

C

C

Side fitting L

CN811

CN802

CN501CN502

FL Display board

Fig.4

CN611

D

D

D

Servo control board

Fig.5

(No.XA001)1-9

2.1.3 Removing the Power supply board (See Figure 6)

• Prior to the following procedure, remove the bottom cover and
the mechanism assembly.
(1) Remove the two screws E attaching the power supply

board.

(2) Remove the five screws F attaching the power supply

board from the rear side.

(3) Disconnect the card wire from the connector CN711 on the

power supply board.

(4) Remove the power cord from the socket P901 on the pow-

er supply board.
*To remove the power supply board more easily, remove

the cap of the optical jack.

2.1.4 Removing the video output terminal board (See Figure 7)

• Prior to the following procedure, remove the bottom cover, the
mechanism assembly, and the power supply board.
(1) Remove one screw G attaching the video output terminal

board.

(2) Remove the two screws H attaching the video output termi-

nal board from the rear side.

Cap of the
optical jack

CN711

Power supply
board

E

E

F

F

P901

Fig.6

G

Fig.7

H

Video output
terminal board

1-10 (No.XA001)

2.2 DVD mechanism assembly

2.2.1 Removing the DVD servo control board
(See Figure 1)

Caution:

Be sure to solder the short land sections "a" on the flexible wire
before disconnecting the flexible wire from connector CN101
on the DVD servo control board.
If the flexible wire is disconnected without attaching solder, the
pickup unit may be destroyed by static electricity.

(1) From the back side of the DVD mechanism assembly, at-

tach solder to the short land sections "a" of the flexible wire
that is connected to the connector CN101 of the DVD servo
control board.

(2) Disconnect the flexible wire from connector CN101 on the

DVD servo control board.

(3) Disconnect the card wires from connectors CN201 and

CN202 on the DVD servo control board.

(4) Remove the two screws A attaching the DVD servo control

board.

(5) While pushing the claw "b" of the DVD mechanism assem-

bly in the direction of the arrow, remove the DVD servo
control board from the projections "c" and "d" in an upward
direction.

Caution:

In the assembly, be sure to remove solder from the short land
sections "a" after connecting the flexible wire.

Flexible wire

DVD servo
control board

Short land sections a

DVD mechanism assembly

A K

CN202

CN101

CN201

Projection d

A

Fig.1

Projection c

Claw b

2.2.2 Removing the DVD traverse mechanism assembly
(See Figure 2)

• Remove the DVD servo control board.

(1) Remove the two screws B attaching the DVD traverse

mechanism assembly.

(2) Disengage the claw e attaching the DVD traverse mecha-

nism assembly and then take out the DVD traverse mech­anism assembly.

DVD traverse mechanism assembly

B B

Claw e

Fig.2

(No.XA001)1-11

2.2.3 Removing the DVD pickup unit

w

t

(See Figure 3, Figure 4, Figure 5)

• Remove the DVD servo control board.

• Remove the DVD traverse mechanism assembly.
(1) From the top side of the DVD traverse mechanism assem-

bly, remove the screw C attaching the bracket.

(2) Remove the claw f attaching the thrust spring and then

take out the thrust spring.

(3) Remove the lead screw from the section g and then re-

move the shaft 1 from the section h.

(4) Disengage the section i of the DVD pickup unit and then re-

move the DVD pickup unit with the shaft 1.
(5) Pull the shaft 1 out of the DVD pickup unit.
(6) Remove the two screws D attaching the SW. actuator.

Bracket

C

DVD pickup unit

Shaft 1

DVD traverse mechanism assembly

Fig.3

DVD pickup unit

Section i

Shaft 2

SW. actuator

Section h

Section g

Lead scre

Shaft 1

Claw f

Thrust spring

Fig.4

D

DVD pickup uni

Shaft 1

1-12 (No.XA001)

Fig.5

2.2.4 Attaching the DVD pickup unit

w

r

r

(See Figure 3, Figure 4, Figure 5, Figure 6, Figure 7)

Reference:

Refer to the explanation of "Removing the DVD pickup unit" on
the preceding page.
(1) Attach the SW. actuator and shaft 1 to the DVD pickup unit.

(See Figure 5)

(2) Engage the section i of the DVD pickup unit to the shaft 2

of the DVD traverse mechanism assembly first, and set the
both ends of the shaft 1 of the DVD pickup unit in the sec­tions h and h' of the DVD traverse mechanism assembly.

(3) Slide the DVD pickup unit all the way in the direction of the

arrow.

(4) Mesh the lead screw to the section j of DVD pickup unit and

then set the end of the lead screw to the section g.
(5) Attach the thrust spring. (See Figure 4)
(6) Attach the bracket. (See Figure 3)

DVD pickup unit

Shaft 2

Section h'

Fig.6

Section i

Shaft 1

Section h

Section g

Section j

2.2.5 Removing the spindle motor board
(See Figure 8, Figure 9)

• Remove the DVD servo control board.

• Remove the DVD traverse mechanism assembly.

(1) From the top side of the DVD traverse mechanism assem-

bly, remove the feed motor wire that is soldered to the spin­dle motor board.

(2) From the back side of the DVD traverse mechanism as-

sembly, remove the three screws E attaching the spindle
motor board.

Remove the solders.

Feed moto
wire

Spindle motor
board

Feed motor

Lead scre

DVD pickup unit

Fig.7

E

E

Spindle moto
board

Fig.9

Fig.8

(No.XA001)1-13

2.2.6 Removing the feed motor

r

(See Figure 10, Figure 11, Figure 12)

• Remove the DVD servo control board.

• Remove the DVD traverse mechanism assembly.
(1) Remove the four screws F attaching the traverse mecha-

nism assembly.

(2) Take out the traverse mechanism assembly from the

mechanism base.

(3) Remove the screw C attaching the bracket and take out the

bracket.

(4) Disengage the claw f attaching the thrust spring and take

out the thrust spring.
(5) Pull out the lead screw in the direction of the arrow.
(6) Remove the feed gear M.
(7) Remove the feed motor wire that is soldered to the spindle

motor board.
(8) Remove the two screws G attaching the feed motor and

take out the feed motor.

Traverse
mechanism

assembly

F

Bracket

F F

Fig.10

C

Mechanism
base

Feed moto

Spindle motor board

Thrust spring

Remove the solders.

Feed motor wire

Lead screw

Feed motor

Feed gear M

Claw f

Fig.11

1-14 (No.XA001)

Traverse
mechanism assembly

Fig.12

G

2.2.7 Removing the switch board

y

r

y

(See Figure 13)

• Remove the DVD mechanism assembly.
(1) From the top side of the DVD mechanism assembly, re-

move the screw H attaching the switch board.

(2) Lift the switch board slightly and then remove the wire from

connector CN101 on the switch board.

2.2.8 Removing the loading motor assembly

(See Figure 1, Figure 13, Figure 14, Figure 15)

• Remove the DVD mechanism assembly.
(1) From the back side of the DVD mechanism assembly, dis-

connect the card wire from connector CN202 on the DVD
servo control board. (See Figure 1)

(2) From the top side of the DVD mechanism assembly, re-

move the two screws I attaching the clamper base assem­bly.

(3) Disconnect the wire from connector CN101 on the switch

board while lifting the clamper base assembly slightly and
remove the clamper base assembly.

(4) Remove the screw K attaching the roller holder assembly.

(See Figure 1)

(5) Remove the three screws J attaching the roller holder as-

sembly and take out the roller holder assembly.

(6) Disconnect the wires from connectors CN103 and CN104

on the loading motor assembly.
(7) Remove the belt of the loading motor assembly.
(8) Remove the two screws L attaching the loading motor as-

sembly and take out the loading motor assembly.

DVD mechanism assembly Clamper base assembl

H

CN101

Switch board

I I

Fig.13

J

Roller holde
assembly

J

Fig.14

CN103

Roller holder
assembly

L

CN104

Loading motor assembl

L

Belt

Fig.15

(No.XA001)1-15

SECTION 3

Adjustment

3.1 Test mode setting method

(1) Unplug the power plug.
(2) Insert power plug into outlet while pressing both "PLAY" key and "STOP" key of the main body.
(3) The FL display shows " 0", and the main body turns to test mode. " " means the destination, and "0" means parameter adjust-

ment status.

(4) To release test mode, press "POWER" key of the main body.

NOTE:

Each pressing of "CHOICE" key of the remote controller in test mode changes the mode as follows.

0 ------------------------------

------------------

Becames test mode

Version of firmware

FL Display becames all lighting

CHECK -------------------------

EXPERT -----------------------

3.2 Method of displaying version of firmware

(1) Set the main body at test mode.
(2) Press "CHOICE" key of the remote controller once. Then, version number and alphabetical letter are displayed in the FL display

as follows:

Check mode

Not used

FL Display (Example)

System controller

3 3 1 6 0 2

Frontend

Backend

3.3 Initialization method

Please initialize according to the following procedures in the following case:

• Just after you upgrade the firmware.

• After you confirm the symptoms that a customer points out. First Initialize, and then confirm whether the symptoms are improved or
not.

• After servicing, before returning the main body to a customer. (Initialized main body should be returned to a customer.)
(1) Set the main body at test mode.
(2) Press "PAUSE" key of the main body.
(3) When initialization is completed, the FL display changes from " 0" to " 00".(The left "0" of "00" is not always "0". It shows pa-

rameter adjustment status.)

1-16 (No.XA001)

EJECT DISPLAY

1

4

7

RETURN

U

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P

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VOL

C

CH

H

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I

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PREVIOUS

–

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PHONIC

ANGLE

SUB TITLE

REPEAT

TV22TV1

TV55TV4

TV88TV7

TV00TV-/-10MUTING

+

ENTER

–

SELECTCLEAR

3D

GROUP

ZOOM

AUDIO

DIMMER

TV DVD

STANDBY/ON

TV DVD

TITLE/

TV3

3

TV6

6

TV9

9

+10

TV/VIDEO
CANCEL

M

E

N

U

+

VOL

N

E

E

R

C

S

N

O

NEXT

+

SLOW

VFP

AMP VOL

CHOICE key
(switch of mode)

POWER key

FL Display

STOP key

(for test mode)

PAUSE key

(for initialize)

PLAY key

(for test mode)

3.4 All-initialization method

Please perform all-initialization according to the following procedures in the following case:

• Just after you exchange the pick-up.

• Just after you exchange the spindle motor.

• Just after you exchange the traverse mechanism base.

NOTE:

Please perform all-initialization when you exchange the parts above and also when you remove the parts above.

• Just after the flap adjustment of the pick-up guide shaft

(1) Set the main body at test mode.
(2) Press and hold "BACKWARD SKIP" key of the main body for more than 2 seconds.
(3) When all-initialization is completed, the FL display changes from " 0" to " 33".

NOTE:

After all-initialization, be sure to perform optimization adjustment of Front End parameter.

3.5 Optimization adjustment of Front End parameter

Adjustment to optimize Front End parameter must be performed in each mechanism assembly of this model for high-speed start­ing.Please perform optimization according to the following procedures just after all-initialization is completed and when FL display
shows anything except " 0" (For example when FL display shows " 1", " 2", and " 3") at test mode.

(1) Press "POWER" key of the main body to turn the main body ON (not to set the main body at test mode).
(2) Insert the test disc VT-501 or commercial dual-layer DVD software.
(3) Remove the disc when the FL display changes from "READING" to disc information.
(4) Perform the same procedures as in (2) and (3) above by using the test disc CTS-1000 or commercial CD-DA software.
(5) Set the main body at test mode, and check that the FL display shows " 0".

NOTE:

Status of this adjustment can be judged by the number displayed at test mode as follows:

DVD adjustment CD adjustment FL display at test mode
Adjusted Adjusted 0
Not adjusted Adjusted 1
Adjusted Not adjusted 2
Not adjusted Not adjusted 3

NOTE:

As for a disc used for adjustment,

• Disc should be mounted. ("Mounting" means to display "READING" after the disc is inserted and then display the disc infor­mation.) Disc need not be played.

• If you do not have test disc either VT-501 (DVD) or CTS-1000 (CD-DA), use a commercial disc (for DVD, dual-layer soft­ware) after seeing and checking that the disc is neither curved nor foreseen that it may shake at the time of playback.If you
use a disc with bad features, starting time may be slow or disc may not be read.

TV DVD

STANDBY/ON

TV DVD

EJECT DISPLAY

TV22TV1

TV3

1

3

TV55TV4

TV6

4

RETURN

T

C

ANGLE

REPEAT

P

O

VOL

H

O

PREVIOUS

SLOW

7

M

I

C

N

E

–

E

U

CH

CH

–

PHONIC

SUB TITLE

+

–

TV88TV7

TV00TV-/-10MUTING

TITLE/

GROUP

ENTER

SELECTCLEAR

3D

ZOOM

AUDIO

DIMMER

6

TV9

9

+10

TV/VIDEO
CANCEL

M

E

N

U

+

VOL

N

E

E

R

C

S

N

O

NEXT

+

SLOW

VFP

AMP VOL

POWER key

FL Display

BACKWARD SKIP key

(for all-initialize : It pushes 2 seconds or more.)

STOP key

(for test mode)

PLAY key

(for test mode)

(No.XA001)1-17

3.6 Display of current value of laser

(1) Set the main body at test mode.
(2) Press "CHOICE" key of the remote controller three times. Then, FL display is displayed "CHECK".
(3) The laser current value can be switched between the value of CD and that of DVD by pressing the following key of the remote

controller.

FL Display (Example)

2 5 3 0

The number shown in the FL display shows mA of current value of laser.The first two numbers ("25" in "2530") shows current
value of laser at the time of adjustment after the latest all-initialization, 25mA in this example.The last two numbers ("30" in
"2530") shows the present current value of laser, 30mA in this example.The first two numbers ("25" in "2530") usually shows
current value of laser at the time of shipment, so you can see how the product has been deteriorated by comparing the first two
numbers ("25" in "2530") and the last two numbers ("30" in "2530").

CD:

The laser current value of 49 mA or less is normal.The laser current value of over 50 mA is not normal. Laser diode of the
pickup has been deteriorated.

DVD:

The laser current value of 64 mA or less is normal.The laser current value of over 65 mA is not normal. Laser diode of the
pickup has been deteriorated.

To return to test mode, press "STOP" key of the main body.

3.7 Flap adjustment of the pick-up guide shaft

Please perform flap adjustment of the pick-up guide shaft in the following case:

• Just after you exchange the pick-up.

• Just after you exchange the spindle motor.

• Just after you exchange the traverse mechanism base.

NOTE:

Please perform flap adjustment of the pick-up guide shaft when you exchange the parts above and also when you remove the
parts above.

• When the reading accuracy of the signal is bad (There is a block noise in the screen, Screen stops in the outer circumference of a
disc, etc.)

Remote controller "4" key --- Laser of CD
Remote controller "5" key --- Laser of DVD

EJECT DISPLAY

1

4

7

RETURN

U

N

E

M

CH

P

O

T

–

VOL

C

CH

H

O

I

C

E

PREVIOUS

–

SLOW

PHONIC

ANGLE

SUB TITLE

REPEAT

TV22TV1

TV55TV4

TV88TV7

TV00TV-/-10MUTING

+

ENTER

–

SELECTCLEAR

3D

DIMMER

TV DVD

TITLE/

GROUP

ZOOM

AUDIO

TV DVD

STANDBY/ON

O

NEXT

SLOW

TV/VIDEO
CANCEL

N

TV3

TV6

TV9

+10

M

VOL

S

VFP

AMP VOL

4 key (laser of CD)

5 key (laser of DVD)

3

6

6 key

9

(display of jitter value)

E

N

U

+

CHOICE key

N

E

E

R

(switch of mode)

C

+

POWER key

(for test mode and jitter value)

PLAY key

FL Display

STOP key (for test mode)

1-18 (No.XA001)

3.7.1 Tool for adjustment

* Relay board and extension cord (One set) --- Parts number : EXTXVQ20CB

1

EXTXVQ20CB

Relay board

(For CN201 extension)

2

3

4

The card wire for extension

19 pins 15 cm

15 pins 15 cm

7 pins 15 cm

*The phillips screwdriver for adjustment --- goods on the market

*Test disc ---- Parts number : VT-501

3.7.2 Preparation for adjustment

(1) A bottom cover and a bottom plate are removed with reference to Disassembly method.
(2) Disconnect the card wire from connector CN811 on the servo control board.
(3) Disconnect the 3 pin wire from connector CN802 on the FL display board.
(4) A main part is removed from a top cover assembly.
(5) The screw which is fixing the servo control board is removed and it removes from a mechanism assembly.
(6) Remove the screws attaching the power supply board.
(7) Three card wires connected on the servo control board are substituted for the card wire for extension, and are extended.

Power supply board

1

Relay board

22

33

44

CN611

Flexible wire (orange)

Servo control board

Top cover assembly

CN811CN202

CN801

CN201

FL Display

board

CN811

(8) The flexible wire (orange) of a pickup is turned down and the whole mechanism assembly is stood perpendicularly.
(9) The direction switch in a rear panel is made into the "2" sides.

(10) The card wire connected from the connector CN801 of FL display board is connected to the connector CN811 on a servo control

board.(It is not necessary to connect 3 pin wire.)

(No.XA001)1-19

3.7.3 Adjustment
Keep in mind if a power supply board is touched, are dangerous at the time of adjustment.

(1) Set the main body at test mode.
(2) Press the "CHOICE" key of the remote controller three times, and the FL display is displayed "CHECK".
(3) Insert a test disc (VT-501), and press the "PLAY" key of the main body.
(4) After a few seconds, press the numeric key "6" of the remote controller. Then, the FL display is displays a jitter value.
(5) Turn the adjustment screws on the underside of the traverse mechanism with phillips screw driver until the maximum jitter value

is displayed on the FL display. (In this model, a bigger jitter value means a better result.)

NOTE:

*Reference values to judge whether the jitter is allowable or not are displayed, instead of actual jitter values.
*Please be sure to perform "all-initialization" and "optimization adjustment of front end parameter" after adjusting.

POINT:

Turn the adjustment screws a and b to the same angle in the
right direction. And turn the adjustment screws a and b to the
same angle in the left direction. Then, turn the screws a and
b in either the right or the left direction to increase the number
of jitter. Don't turn the adjustment screw c.

Screw a

Screw c

Screw b

1-20 (No.XA001)

3.8 Upgrading of firmware

A

The latest firmware for upgrading is updated in "Optical disc CSG" page in JS-net.At the time of service, compare the version of the
product and the latest version, and upgrade the old version into the latest version.

(1) Press "POWER" key of the main body to turn the main body on
(2) Insert the upgrade disc.
(3) When FL display of the main body changes from "READ" to "UP", press "cursor UP" key () of the remote controller.
(4) The entire screen becomes blue, and upgrading starts.
(5) The tray opens automatically. Remove the upgrade disc.
(6) The screen returns to the normal screen. Then, press "POWER" key of the main body. When the stand-by indicator is lighted,

upgrading is completed.

(7) Set the main body at test mode, and perform initialization. Then, confirm the version of the firmware.

Firmware upgrade Disc ... press UP

fter inserting the up-grade disc

TV DVD

STANDBY/ON

TV DVD

EJECT DISPLAY

TV22TV1

TV3

1

3

UP key

TV6

6

TV9

(for firmware upgrade)

9

+10

TITLE/

TV/VIDEO

GROUP

CANCEL

M

E

N

U

+

VOL

N

E

E

R

C

S

N

O

NEXT

+

SLOW

CHOICE key

VFP

ZOOM

AUDIO

(switch of mode)

AMP VOL

DIMMER

RETURN

O

T

C

ANGLE

REPEAT

4

7

N

E

M

P

–

VOL

H

O

I

C

E

PREVIOUS

SLOW

U

SUB TITLE

CH

+

CH

–

–

PHONIC

TV55TV4

TV88TV7

TV00TV-/-10MUTING

ENTER

SELECTCLEAR

3D

Upgrade application initializing...

While upgrading (blue screen)

POWER key

FL Display

When up-grade is completed

PAUSE key

(for initialize)

STOP key (for test mode)

NO DISC

PLAY key

(for test mode)

(No.XA001)1-21

3.9 Confirm method of operation

Please confirm the operation of the undermentioned item after doing the repair and the upgrade of the firmware.

Initialize Refer to the initialization method.

All-initialize Refer to the All-initialization method.

Parameter adjustment status Set the main body at test mode, and check that the FL display shows " 0".

Opening picture check (Power ON) It should be display "JVC"

Muting working The noise must not be had to the performance beginning when you push "PLAY" button or

at ON/STANDBY.

FL Display The mark and the logo, etc. displayed by each operation must be displayed correctly.FL Dis-

play should light correctly without any unevenness.

All Function button All function buttons should worked correctly with moderate click feeling.

Insertion and extraction operation
of a disk

Remote controller unit working Check the correctly operation in use of remote controller unit.

Reading of TOC Be not long in the malfunction.

Search Both forward-searches and backward-searches should be able to be done.Do not stop be

Skip Both forward-skip and backward-skip should be able to be done.Do not stop be after the

Playback Do not find abnormality etc. of tone quality and the picture quality.

Most outside TITLE playback check Play VT-501 TITLE 59 CHAPTER 1 , check normal playback.

Push an EJECT key and a disk should eject smoothly without an allophone.
Moreover, insert similarly.

searching or after the search.

skip.

1-22 (No.XA001)

3.10 Troubleshooting

3.10.1 Servo volume

Press OPEN
/CLOSE key

Is tray

operation

Confirmation of tray drive circuit

N

and circuit in surrounding

correct?

Y

Is the traverse moving
along the innermost

N

perimeter for SW detection?

Y

"NO DISC" message appears

Y

immediately after vertical
movement of the pick-up lens

N

The state that DISC does not rotate continues for
several seconds, and becomes NO DISC or an
error display afterwards.
The rotation of DISC becomes high-speed and
abnormal, and becomes NO DISC or an error
display afterwards.

N

Is focus retraction OK?

FE

OFF
Even when it retracts
correctly, if it is out of focus
and makes repeated retries
with a clicking sound, it is
in error.

ON

See "(4) Focus ON error"

N

in "Check points for
individual errors"

Y

Is tracking retraction OK?

See "(3) Traverse movement error"
in "Check points for individual errors"

See "(2) Disk detection, distinction error"
in "Check points for individual errors"

Y

See "(1) Spindle startup error"
in "Check points for individual errors"

Is the inter-layer jump OK?

FE

LO LI

A

Two layers of DVD only.

N

(8) Inter-layer

jump error

Y

TE

OFF

If TE waveform reappears
or fails to converge after the
TE retraction, it is in error.

ON

Y

Is the spindle servo

locked correctly?

Is the RF OUT waveform

locked correctly?

Y

A

See "(5) Tracking ON error"

N

in "Check points for
individual errors"

See "(6) Spindle CLV error"

N

in "Check points for
individual errors"

Fig.1

Has the disc information

been collected?

Stop will result

Y

Is playback

N

possible?

Y

OK !

N

(7) Address read

error

Check (9),(10),(11), and
(12) items in "Check points
for individual errors"

(No.XA001)1-23