JVC XVN-30-BK, XVN-33-SL Service manual
SERVICE MANUAL
DVD VIDEO PLAYER
XA00220035
XV-N30BK[MK2],
XV-N33SL[MK2]
Area Suffix
J -------------------------- U.S.A.
C --------------------- Canada
B -------------------------- U.K.
E ------ Continental Europe
EN ------- Northern Europe
EV --------- Eastern Europe
DISPLAY
TITLE/
3D PHONIC
GROUP RETURN CANCEL
213
5
4
8
7
010 +10
ANGLE
SUB TITLE AUDIO ZOOM
TOP MENU MENU
CHOICE
SLOW
PREVIOUS SELECT
CLEAR
STANDBY/ON
6
9
ENTER
VFP ON SCREEN
NEXT
For only Europe
EE ---- Russian Federation
This illustration is XV-N30BK for U.S.A.
This service manual is a service manual of the model which
changes a part of specification of the above-mentioned model
which has already been put on the market.
Please refer to the following page for details.
TABLE OF CONTENTS
1 Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
3 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
4 Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED.
No.XA002
2003/5
For this service manual
This service manual is a service manual of the model which changes a part of specification of the above-mentioned model
which has already been put on the market.
<When the label in figure is pasted in the main body>
The specification is different from what the label of the same model does not paste because of the specification improvement,
and refer to this service manual, please. Please already refer to the issued service manual when the label is not pasted.
* Please refer to this service manual for the model to which this label is pasted.
* Please refer to the service manual which has already been issued for the
model to which this label is not pasted.
(one that there is no description named [MK2] in cover of service manual. )
0478
The surface of a rear panel
inside
or
Used only service dealer
Please refer to service manual of an applicable model [MK2]
GN30080-001A
1-2 (No.XA002)
SPECIFICATION
(For U.S.A.)
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, CD-R/RW (CD-DA, SVCD, Video CD, MP3 format)
Video format NTSC
Other
Power requirements AC 120 V, 60 Hz
Power consumption 10 W (POWER ON) 0.7 W (STANDBY mode)
Mass 2.1 kg (4.7 lbs)
Dimensions (W x H x D) 435mm x 53mm x 248.4mm (17-3/16 inch x 2-1/8 inc x 9-13/16 inch)
Video outputs
COMPONENT (pin jacks) Y Output: 1.0 Vp-p (75 ohm)
Pb/Pr Output: 0.7Vp-p (75 ohm)
VIDEO OUT (pin jack) 1.0 Vp-p (75 ohm)
S-VIDEO OUT (S jack) Y Output: 1.0 Vp-p (75 ohm)
C Output: 286 mVp-p (75 ohm)
Horizontal resolution 500 lines or more
Audio outputs
ANALOG OUT (pin jack) 2.0 Vrms (10 kohm)
DIGITAL OUT (COAXIAL) 0.5 Vp-p (75 ohm 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 trademarkes of Dolby Laboratories.
• Manufactured under license from Digital Theater Systems, Inc. "DTS" and "DTS Digital Surround" are registered trademarks of Digital Theater Systems, Inc.
(No.XA002)1-3
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)
1-4 (No.XA002)
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.
1.7 Precautions of the safe use of battery (Only XV-N30BK for U.S.A.)
• Store the battery in a place where children cannot reach.If a child accidentally swallows the battery, consult a doctorimmediately.
• Do not recharge, short, disassemble or heat the battery or dispose of it in a fire.
Doing any of these things may cause the battery to give off heat, crack, or start a fire.
• Do not leave the battery with other metallic materials.Doing this may cause the battery to give off heat, crack, or start a fire.
• When throwing away or saving the battery, wrap it in tape and insulate; otherwise, the battery may start to give off heat, crack, or
start a fire.
• Do not poke the battery with tweezers or similar tools.Doing this may cause the battery to give off heat, crack, or start a fire.
• Dispose of batteries in the proper manner, according to federal, state, and local regulations.
(No.XA002)1-5
1.8 Importance admistering point on the safety
J702
EP953
C966
C965
L954
L953
C963
D957
D956
T901
C908
R901
C906
C907
B234
R910
C904
C918
C905
L901
C902
EP951
P901
L955
C988
C967
C964
D954
D903
D901
B631
C958
D953
D955
R912
D902
C914
R915
C913
IC901
FC901
L951
C952
D951
R903
D904
R906
C955
B141
D952
PC901
R913
R954
C950
C970
CP951
B137
IC952
B34
Q951
R953
R951
B116
B135
B303
B133
B134
B37
C701
B38
B39
B132
B40
B202
B231
B233
B105
C808
C802
B45
FC902
B4
L710
L709
L952
B331
C953
R969
C951
B236
B136
B271
B347
D701
X701
C706
B201
B142
B143
B170
B203
B102
B16
C959
B140
B852
B871
B874
B872
B166
B403
B237
EP952
CN904
B36
B103
B101
B171
B44
P704
B2
D702
B41
CN901
S901
B273
B873
C973
B601
Q953
B32
R966
B272
B139
B138
,,
B17
B772
B771
C957
B332
B532
C977
L959
S902
C975
C976
L957
B15
B533
L956
B276
B333
C974
CN902
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 ;
1-6 (No.XA002)
1.9 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.
The inside of a rear panel
M
A
PCM/STRE
COAXIAL
LEFT
VIDEO
S-VIDEO
ID
V
EO O
RIGHT
U
O
IO
D
AU
T
U
UT
O
AL
IT
DIG
T
/C
Y
.
P
COM
B
G
/R
SIGNAL
OR
VIDEO
SELECT
T
U
O
V
A
COMPU LINK
AV
(No.XA002)1-7
1.10 Precautions for Service
1.10.1 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.
1.10.2 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.
Pick-up
Short circuit
* Please refer to the disassembly method for details.
CN101
Servo control board
1-8 (No.XA002)
SECTION 2
TOP COVER
r
Push
Disassembly method
There is a part different from the photograph according to the model and the destination though explains this disassembly method
by using XV-N30BK for U.S.A.
2.1 Main body section
2.1.1 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.
2.1.2 Removing the front panel assembly (See Figure 2, Figure 3, Figure 4)
• Prior to performing the following procedure, remove the top
cover.
• There is no need to remove the mechanism 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) Disconnect the card wire from connector CN901 on the
power supply board.
(4) Hook a and b are removed respectively, and the front panel
assembly is removed.
A
x
2
Fitting
B
Push
TOP COVER
TOP COVER
Fig.1
Tray
B
Front panel assembly
Mechanism assembly
Hole and leve
B
Fig.2
Front panel assembly
Power supply board
Fig.3
Hook b
Front panel
assembly
Hook b
Hook a
Fig.4
CN901
Hook a
(No.XA002)1-9
2.1.3 Removing the mechanism assembly (See Figure 2, Figure 5)
• 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) Disconnect the wire from connector CN501,CN502,CN503
on the servo control board respectively.
(5) Remove the mechanism assembly by lifting the rear part of
the mechanism assembly.
2.1.4 Removing the servo control board (See Figure 6, Figure 7)
• Prior to performing the following procedure, remove the mechanism assembly.
(1) A tray is made to slide ahead.
(2) A gear 1 is turned counterclockwise. Then, a pick-up unit
moves back.
(3) It solders to two c sections on the pick-up unit.
(4) Remove the three screws D attaching the servo control
board.
(5) Disconnect the card wire from connector CN201,CN202 on
the servo control board.
(6) Disconnect the flexible wire from connector CN101 on the
servo control board from pick-up unit.
ATTENTION:
Please extract the wire after short-circuited of two places
on the wire in part c with solder. Please remove the solder two places of part c after connecting the wire with
CN101 when reassembling.
CAUTION:
Be sure to solder the short land sections “c” on the pickup unit before disconnecting the card wire from connector CN101 on the DVD servo control board.
If the card wire is disconnected without attaching solder,
the pick-up unit may be destroyed by static electricity.
CN502
CN503
Gear1
Pick-up
Mechanism assembly
C
CN501
Fig.5
Fig.6
C
C
Part c
1-10 (No.XA002)
CN202
CN201
CN101
D
Servo control board
Fig.7
D
D
2.1.5 Removing the rear panel (See Figure 8, Figure 9)
• Prior to performing the following procedure, remove the top
cover.
(1) Remove the five screws E attaching the rear panel.
(2) Disconnect the power cord from connector P901 on the
power supply board
(3) Remove tie band.
Rear panel
E
E
Fig.8
G G
CN702
2.1.6 Removing the output terminal board and power supply board. (See Figure 9)
• Prior to performing the following procedure, remove the top
cover/mechanism assembly/rear panel.
(1) Remove the two screws G attaching the output terminal
board.
(2) Disconnect the card wire from connector CN702 on the
output terminal board.
(3) Remove the three screws H attaching the power supply
board.
(4) Disconnect the card wire from connector CN901 on the
power supply board.
CN901 P901
H
Power supply boardOutput terminal board
Fig.9
H
Tie band
Power cord
H
(No.XA002)1-11
2.2 Loading mechanism assembly
Projection of the tray
2.2.1 Removing the tray (See Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6)
(1) Push a of the slide cam on the hole in the right side of the
loading base by using a driver until it stops. (See Figure 1.)
(2) The tray comes out. Pull the tray in a front direction until it
stops.
(3) Remove the two screws A attaching the slide bracket. (See
Figure 2.)
(4) Tilt the tray in a direction of the arrow around the point in
the left rear part of the tray. (See Figure 3.)
(5) The rail of the tray is removed from b of the loading base.
Then, remove the tray upward. (See Figure 4.)
Attaching the tray:
Engage c of the loading base to the projection of the tray while
tilting the tray to the left. Turn the tray in a direction of the arrow, and attach the slide bracket. (See Figure 5.)
Note:
Prior to the procedure above, move the slide cam in a direction
of the arrow so that d of the slide cam can be inserted in e of
the tray. (See Figure 6.)
Tray
The point in the left rear part
Tray
Fig.3
Push
Slide cam part a
Slide bracket
A
Fig.1
Fig.2
A
Loading base
Tray
Loading base part b
Rail of the tray
Fig.4
Projection of the tray
Loading base part c
Fig.5
Part e
1-12 (No.XA002)
Part d
Slide cam
Fig.6
2.2.2 Removing the traverse mechanism assembly (See Figure 7)
f
Shaft
Reverse the loading mechanism assembly. Remove the four
screws B attaching the traverse mechanism assembly. Remove
the traverse mechanism assembly upward.
Loading mechanism assembly
2.2.3 Removing the elevator (See Figure 8 and Figure 9)
• Prior to the following procedure, remove the traverse mechanism assembly.
(1) Remove the two arms of the elevator from the two parts f
by moving the arms in a direction of the arrow.
(2) Pull out the elevator in a rear direction.
Attaching the elevator:
Engage the two holes g to the two shafts on the front part of
the elevator. And then, attach the elevator.
B
B
B
B
Traverse mechanism assembly
Fig.7
Elevator
Part f
Fig.8
g
Slide cam
Elevator
Shaft
Fig.9
(No.XA002)1-13
Part
g
2.2.4 Removing the loading motor (See Figure 10 and Figure 11)
• Prior to the following procedure, remove the tray, the traverse
mechanism assembly, and the elevator.
(1) Remove the belt from the pulley.
(2) Remove two screws C attaching the loading motor.
(3) Remove two solders h on the switch board.
Pulley
Belt
C
Fig.10
Pulley
C
Loading base
Slide cam
Switch board
Loading motor
Part h
Fig.11
1-14 (No.XA002)
2.3 Traverse mechanism assembly
2.3.1 Removing the pickup (See Figure 12, Figure 13)
• Prior to the following procedure, remove the traverse mechanism assembly.
(1) Remove one screw D attaching the plate.
(2) Remove the plate and the leaf spring.
(3) Lift i of the shaft 1, and pull out the shaft 1 from j.
(4) Remove k of the pickup from the shaft 2.
Attaching the pickup:
(1) Engage k of the pickup to the shaft 2.
(2) Insert the shaft 1 in j, and attach the shaft 1 to i.
(3) Attach the leaf spring, and then attach the plate. Fix the
leaf spring and the plate by using the screw D.
D
Leaf spring
Plate
Fig.12
Part j
Shaft 2
Part k
Shaft 1
Part i
Fig.13
(No.XA002)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
CK --------------------------------
EP -------------------------------
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 of the system controller and
the back end are displayed in the FL display as follows:
Check mode
Not used
FL Display (Example)
19_16
System controller
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.)
STANDBY/ON
DISPLAY
TITLE/
3D PHONIC
GROUP RETURN CANCEL
213
5
6
4
8
9
7
010 +10
ANGLE
SUB TITLE AUDIO ZOOM
TOP MENU MENU
CHOICE
SLOW
VFP ON SCREEN
PREVIOUS SELECT
CLEAR
CHOICE key
ENTER
(switch of mode)
NEXT
POWER key
FL Display
Back end
PLAY key
(for test mode)
STOP key
(for test mode)
1-16 (No.XA002)
PAUSE key
(for initialize)
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 "READ" 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 "READ" 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.
STANDBY/ON
DISPLAY
TITLE/
3D PHONIC
GROUP RETURN CANCEL
213
5
4
8
7
010 +10
ANGLE
SUB TITLE AUDIO ZOOM
TOP MENU MENU
CHOICE
SLOW
VFP ON SCREEN
PREVIOUS SELECT
CLEAR
6
9
STOP key
ENTER
POWER key
NEXT
FL Display
(for test mode)
BACKWARD SKIP key
(for All initialize : It pushes 2 seconds or more.)
PLAY key
(for test mode)
(No.XA002)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 "CK".
(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)
2530
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 and DVD:
The laser current value of 80 mA or less is normal.The laser current value of over 81 mA is n ot 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 b lock noise in the screen, Screen stops in the outer circumference of a
disc, etc.)
4 key (laser of CD)
5 key (laser of DVD)
STANDBY/ON
DISPLAY
TITLE/
GROUP RETURN CANCEL
3D PHONIC
213
5
6
4
7
SUB TITLE AUDIO ZOOM
ANGLE
TOP MENU MENU
CHOICE
SLOW
PREVIOUS SELECT
CLEAR
6 key
8
9
(display of jitter value)
010 +10
CHOICE key
ENTER
(switch of mode)
VFP ON SCREEN
NEXT
POWER key
Remote controller "4" key --- Laser of CD
Remote controller "5" key --- Laser of DVD
(for test mode and jitter value)
STOP key
FL Display
(for test mode)
PLAY key
1-18 (No.XA002)
3.7.1 Tool for adjustment
*Stud: One set (four studs), Part number: JIGXVS40 (Note: One of the four studs is not used here.)
* Relay board and extension cord (One set) --- Parts number : EXTXVN30CB
-- Items --
1
Relay board 1 : EXTXVN30CB-1
2
Relay board 2 : EXTXVN30CB-2
3
Relay board 3 : EXTXVN30CB-3
4
Relay board 4 : EXTXVN30CB-4
5
Card wire : 15 pins 15 cm 2 pcs
6
Card wire : 9 pins 15 cm 1 pcs
5 5 6
3
1
4
2
*The phillips screwdriver for adjustment --- goods on the market
*Test disc ---- Parts number : VT-501
3.7.2 Preparation for adjustment
(1) A mechanism assembly is removed with reference to the disassembly method of a service manual.
(2) When the card wire which has connected the power supply board and the output terminal board is extracted at this time, please
connect again.
(3) Three stud is attached in a mechanism assembly, respectively.
(4) Remove the servo control board attached the mechanism assembly.
(If you disconnect the wires connected to the servo control board, connect them again.)
(5) The relay board 2 is connected to the connectors CN601 and CN701 on the output terminal board.
(6) The relay board 4 is connected to the connectors CN902 on the power supply board.
(7) The relay board 1 is connected to the connectors CN502 and CN503 on the servo control board.
(8) The relay board 3 is connected to the connectors CN501 on the servo control board.
(9) Between relay boards, an extension code is inserted, respectively and it connects.
(Be careful of direction of a card wire at this time.)
3
Servo control board
Stud
Relay board 3
55
Power supply board
4
Relay board 4
Stud
1
Relay board 1
55 66
2
Relay board 2
Output terminal
board
(No.XA002)1-19
3.7.3 Adjustment
A
(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 "CK".
(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.
Traverse mechanism assembly
Loading mechanism assembly
Screw c
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 b
3.8 Upgrading of firmware
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
STANDBY/ON
DISPLAY
TITLE/
3D PHONIC
GROUP RETURN CANCEL
213
UP key
5
6
4
7
ANGLE
SUB TITLE AUDIO ZOOM
TOP MENU MENU
CHOICE
SLOW
PREVIOUS SELECT
CLEAR
(for firmware upgrade)
8
9
010 +10
CHOICE key
ENTER
(switch of mode)
VFP ON SCREEN
NEXT
Upgrade application initializing...
While upgrading (blue screen)
POWER key
FL Display
NO DISC
When up-grade is completed
PLAY key
(for test mode)
STOP key
(for test mode)
1-20 (No.XA002)
OPEN/CLOSE key
PAUSE key
(for initialize)
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 Display should light correctly without any unevenness.
All Function button All function buttons should worked correctly with moderate click feeling.
Open and close movement of tray When press OPEN/CLOSE button the tray should move smoothly without any noise.
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
searching or after the search.
Skip Both forward-skip and backward-skip should be able to be done.Do not stop be after the skip.
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.
(No.XA002)1-21
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.
Is the spindle servo
locked correctly?
Is the RF OUT waveform
locked correctly?
1-22 (No.XA002)
A
ON
See "(5) Tracking ON error"
N
in "Check points for
individual errors"
Has the disc information
been collected?
Stop will result
N
(7) Address read
error
Y
Y
Check (9),(10),(11), and
See "(6) Spindle CLV error"
N
in "Check points for
individual errors"
Is playback
possible?
Y
N
(12) items in "Check points
for individual errors"
Y
OK !
Fig.1
3.11 Check points for each error
3.11.1 Spindle start error
(1) Defective spindle motor
• Are there several ohms resistance between each pin of CN201 "1-2","2-3","1-3"?
(The power supply is turned off and measured.)
• Is the sign wave of about 100mVp-p in the voltage had from each terminal?
[ CN201"10"(H1+),"11"(H1-),"7"(H2+),"8"(H2-),"5"(H3+),"6"(H3-) ]
(2) Defective spindle motor driver (IC251)
• Has motor drive voltage of a sine wave or a rectangular wave gone out to each terminal(SM1~3)
of CN201"1,2,3" and IC251"2,4,7"?
• Is FG pulse output from the terminal of IC251"24"(FG) according to the rotation of the motor?
• Is it "L(about 0.9V)" while terminal of IC251"15"(VH) is rotating the motor?
(3) Has the control signal come from servo IC or the microcomputer?
• Is it "L" while the terminal of IC251"18"(SBRK) is operating?
Is it "H" while the terminal of IC251"23"(/SPMUTE) is operating?
• Is the control signal input to the terminal of IC251"22"(EC)?
(changes from VHALF voltage while the motor is working.)
• Is the VHALF voltage input to the terminal of IC251"21"(ECR)?
(4) Is the FG signal input to the servo IC?
• Is FG pulse input to the terminal of IC301"69"(FG) according to the rotation of the motor?
3.11.2 Disc Detection, Distinction error (no disc, no RFENV)
• Laser is defective.
• Front End Processor is defective (IC101).
• APC circuit is defective. --- Q101,Q102.
• Pattern is defective. --- Lines for CN101 - All patterns which relate to pick-up and patterns between IC101
• IC101 --- For signal from IC101 to IC301, is signal output from IC101 "20" (ASOUT) and IC101 "41"(RFENV) and IC101 "22"
(FEOUT)?
3.11.3 Traverse movement NG
(1) Defective traverse driver
• Has the voltage come between terminal of CN101 "2" and "4" ?
(2) Defective BTL driver (IC201)
• Has the motor drive voltage gone out to IC201"17" or "18"?
(3) Has the control signal come from servo IC or the microcomputer?
• Is it "H" while the terminal of IC201"9"(STBY1) ?
• TRSDRV Is the signal input? (IC301 "67")
(4) TRVSW is the signal input from microcomputer? (IC301 "56")
3.11.4 Focus ON NG
• Is FE output ? --- Pattern, IC101
• Is FODRV signal sent ? (R209) --- Pattern, IC301 "115"
• Is driving voltage sent ?IC201 "13", "14" --- If NG, pattern, driver, mechanical unit .
• Mechanical unit is defective.
3.11.5 Tracking ON NG
• When the tracking loop cannot be drawn in, TE shape of waves does not settle.
• Mechanical unit is defective.
Because the self adjustment cannot be normally adjusted, the thing which cannot be normally drawn in is thought.
• Periphery of driver (IC201)
Constant or IC it self is defective.
• Servo IC (IC301)
When improperly adjusted due to defective IC.
(No.XA002)1-23
3.11.6 Spindle CLV NG
• IC101 -- "30"(ARF-), "31(ARF+).
• Does not the input or the output of driver's spindle signal do the grip?
• Has the tracking been turned on?
• Spindle motor and driver is defective.
• Additionally, "IC101 and IC301" and "Mechanism is defective(jitter)", etc. are thought.
3.11.7 Address read NG
• Besides, the undermentioned cause is thought though specific of the cause is difficult because various factors are thought.
Mechanism is defective. (jitter)
IC301
The disc is dirty or the wound has adhered.
3.11.8 Between layers jump NG (double-layer disc only)
Mechanism defective
Defect of driver's IC(IC201)
Defect of servo control IC(IC301)
3.11.9 Neither picture nor sound is output
(1) It is not possible search
• Has the tracking been turned on?
• To "(5) Tracking ON NG" in "Check points for each error" when the tracking is not normal.
• Is the feed operation normal?
To "(3) traverse movement NG" in "Check points for each error" when it is not normal.Are not there caught of the feeding mechanism etc?
3.11.10 Picture is distorted or abnormal sound occurs at intervals of several seconds.
Is the feed operation normal?
Are not there caught of the feeding mechanism etc?
3.11.11Others
• The image is sometimes blocked, and the image stops.
• The image is blocked when going to outer though it is normal in suroundings in the disk and the stopping sympton increases.
There is a possibility with bad jitter value for such a symptom.
3.11.12CD During normal playback operation
(1) Is TOC reading normal?
• Displays total time for CD-DA.
• Shifts to double-speed mode for V-CD
(2) Is playback afterwards possible?
(3) When can not do a normal playback
• --:-- is displayed during FL search.
According to [It is not possible to search ] for DVD(9), check the feed and tracking systems.
• No sound is output although the time is displayed.(CA-DA)
DAC, etc, other than servo.
• The passage of time is not stable, or picture is abnormal.(V-CD)
• The wound of the disc and dirt are confirmed.
1-24 (No.XA002)
Loading...