JVC XVN-320-B, XVN-322-S Service manual
SERVICE MANUAL
DVD PLAYER
YD05320052
XV-N320B,XV-N322S
Area Suffix
US ----------------------- U.S.A.
UC ------------------- Canada
STANDBY/ON
OPEN/
CLOSE
+
SLOW
DISPLAYON SCREEN
T
O
T
P
H
U
M
B
N
A
IL
L
ENTER
S
NEXTPREVIOUS
SELECT
CLEAR
123
456
789
0
SOUND
VFP
EFFECT
I/P
SUBTITLEANGLE
AUDIO
ZOOM
/
IS
T
E
T
U
P
®
VIDEO
M
E
N
U
M
E
N
U
CANCEL RETURN
TITLE/
GROUP DIMMER
SLIDE EFFECT
XV-N320BUSC,XV-N320BUCC,XV-N322SUSC,XV-N322SUCC
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
COPYRIGHT © 2005 Victor Company of Japan, Limited
No.YD053
2005/2
SPECIFICATION
XV-N320B,XV-N322S for US,UC
General
Readable discs DVD VIDEO, DVD-R (Video format), DVD-RW (Video format), SVCD, Video CD, Audio CD (CD-DA),
CD-R/RW (CD-DA, SVCD, Video CD, MP3 format, JPEG)
Video format NTSC, 480i/480p selectable
Other
Power requirements AC 120 V~, 60 Hz
Power consumption 11.0 W (POWER ON), 1.0 W (STANDBY mode)
Mass 1.5 kg (3.3 lbs)
Dimensions (W × H × D) 435mm × 44mm × 201.5 mm (17-3/16 inch × 1-3/4 inc × 7-15/16 inch)
Video outputs
COMPONENT (pin jacks) Y Output: 1.0 Vp-p (75 Ω)
Pb/Pr Output: 0.7Vp-p (75 Ω)
VIDEO (pin jack) 1.0 Vp-p (75 Ω)
S-VIDEO (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)
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
Wow and flutter Unmeasurable (less than +- 0.002%)
Total harmonic distortion less than 0.009%
1-2 (No.YD053)
SECTION 1
PRECAUTION
1.1 Safety Precautions
(1) This design of this product contains special hardware and
many circuits and components specially for safety purposes. For continued protection, no changes should be made
to the original design unless authorized in writing by the
manufacturer. Replacement parts must be identical to
those used in the original circuits. Services should be performed by qualified personnel only.
(2) Alterations of the design or circuitry of the product should
not be made. Any design alterations of the product should
not be made. Any design alterations or additions will void
the manufacturers warranty and will further relieve the
manufacture of responsibility for personal injury or property
damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features
are identified by shading on the schematics and by ( ) on
the Parts List in the Service Manual. The use of a substitute
replacement which does not have the same safety characteristics as the recommended replacement parts shown in
the Parts List of Service Manual may create shock, fire, or
other hazards.
(4) The leads in the products are routed and dressed with ties,
clamps, tubings, barriers and the like to be separated from
live parts, high temperature parts, moving parts and/or
sharp edges for the prevention of electric shock and fire
hazard. When service is required, the original lead routing
and dress should be observed, and it should be confirmed
that they have been returned to normal, after reassembling.
(5) Leakage shock hazard testing)
After reassembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads,
headphone jack, control shafts, etc.) to be sure the product
is safe to operate without danger of electrical shock.Do not
use a line isolation transformer during this check.
• Plug the AC line cord directly into the AC outlet. Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).
• Alternate check method
Plug the AC line cord directly into the AC outlet. Use an
AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 ohm 10W
resistor paralleled by a 0.15 F AC-type capacitor between an exposed metal part and a known good earth
ground.
Measure the AC voltage across the resistor with the AC
voltmeter.
Move the resistor connection to each exposed metal
part, particularly any exposed metal part having a return
path to the chassis, and measure the AC voltage across
the resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Voltage measured any must
not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5
mA AC (r.m.s.).
1.2 Warning
(1) This equipment has been designed and manufactured to
meet international safety standards.
(2) It is the legal responsibility of the repairer to ensure that
these safety standards are maintained.
(3) Repairs must be made in accordance with the relevant
safety standards.
(4) It is essential that safety critical components are replaced
by approved parts.
(5) If mains voltage selector is provided, check setting for local
voltage.
1.3 Caution
Burrs formed during molding may be left over on some parts
of the chassis.
Therefore, pay attention to such burrs in the case of preforming repair of this system.
1.4 Critical parts for safety
In regard with component parts appearing on the silk-screen
printed side (parts side) of the PWB diagrams, the parts that are
printed over with black such as the resistor ( ), diode ( )
and ICP ( ) or identified by the " " mark nearby are critical for
safety. When replacing them, be sure to use the parts of the
same type and rating as specified by the manufacturer. (Except
the JC version)
(No.YD053)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.
1.7 Precautions of the safe use of battery
• 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.
1-4 (No.YD053)
1.8 Importance administering point on the safety
CN903
B918
B902
S501S502
B916
B915
S507
B912
B910
S506
R963
Q951
S508
C966
S503 S504
L955
S505
CN902
B908
B907
C985
C954
C964
L953
C955
D954
C957
D956
L954
C982
C956
D960
C950
R950
B701
B914
B913
EP902
B905
B904
CP950
CN901
B901
C959
C958
L952
L951
D953
C983
D955
B903
D957
D952
D951
L960
B730
B731
B712
B714
B704
B703
B702
B705
B710
B740
B906
L970
C902
B713
B706
B709
B708
B741
B919
B742
B743
B744
IC902
C905
PC901
R902
D906
C909
IC901
C908
D905
R901
T901
B917
D902
C907
C906
B716
B715
B717
B722
B718
C755
C756
B729
B711
CN905
B745
B728
B727
L709
L730
B760
B761
L706
B762
L701
B746
B747
L702
B748
B749
C903
C904
D903
L901
B723
B725
B719
B720
EP901
B721
B765
B764
B759
B763
B758
B757
B754
C730
B751
B752
B750
C901
P901
FC901
J901
C713
B724
B726
C712
C706
C707
B770
B767
B769
B768
B766
J601
CN904
B771
B756
L707
J703
J602
B753
B755
FC902
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.YD053)1-5
1.9 Precautions for Service
1.9.1 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.
1.9.2 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.
Gear1
Short circuit Pick-up
*Please refer to the disassembly method for details.
CN101 Digital board
1-6 (No.YD053)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
(No.YD053)1-7
SECTION 3
TOP COVER
DISASSEMBLY
3.1 Main body section
3.1.1 Removing the top cover (See Figure 1)
(1) Remove the two screws A attaching the top cover on both
sides of the main body.
(2) Remove the three screws B attaching the top cover on the
back of the main body.
(3) Raise the both sides and lower part of the rear of the top
cover, with opening them slightly in an outward direction.
And the top cover will be removed.
3.1.2 Removing the front panel assembly (See Figure 2)
• Prior to performing the following procedure, remove the top
cover.
• There is no need to remove the mechanism assembly.
(1) Hook a and b are removed respectively, and the front panel
assembly is removed.
A x 2
B
Front panel
assembly
Hook b
TOP COVER
TOP COVER
Fig.1
Hook b
Hook b
B
B
Hook a
Hook a
Fig.2
1-8 (No.YD053)
3.1.3 Removing the mechanism assembly (See Figure 3, Figure 4, Figure 5)
Push
• Prior to performing the following procedure, remove the top
cover.
• There is no need to remove the front panel assembly.
(1) Remove the three screws C attaching the mechanism as-
sembly.
(2) Remove the mechanism assembly by lifting the rear part of
the mechanism assembly.
(3) Insert a kind of screwdriver in a hole located in the right
side of mechanism assembly, and push a lever until it can-
not be inserted any further.
(4) A tray is made to slide ahead.
(5) A gear 1 is turned counterclockwise. Then, a pick-up unit
moves back.
(6) It solders to two c sections on the pick-up unit.
(7) Disconnect the card wire from connector CN201
CN101 on the digital board.
ATTENTION:
Please extract the wire after short-circuited of two places
on the pick-up unit in part c with solder. Please remove
the solder two places of part c after connecting the wire
with CN101
CAUTION:
Be sure to solder the short land sections “c” on the pickup unit before disconnecting the card wire from connector CN101 on the digital board.
If the card wire is disconnected without attaching solder,
the pick-up unit may be destroyed by static electricity.
when reassembling.
, CN202,
CN202
Mechanism assembly
C
Fig.3
Front panel assembly
Tr ay
Push
C
C
Mechanism assembly
CN201 CN101 Digital board
Fig.4
Part c Pick-upGear1
Fig.5
(No.YD053)1-9
3.1.4 Removing the rear panel (See Figure 6 )
• Prior to performing the following procedure, remove the top
cover.
(1) Remove the four screws D attaching the rear panel.
(2) Disconnect the power cord from connector P901 on the
main board
Main board
3.1.5 Removing the digital board and main board. (See Figure 7 ,Figure 8)
• Prior to performing the following procedure, remove the top
cover/front panel assembly/rear panel.
(1) Remove the two screws E attaching the digital board.
(2) Disconnect the card wire from connector CN201
, CN301, CN302, CN303 on the digital board.
CN101
(3) Disconnect the card wire from connector CN903 on the
main board.
(4) Remove the four screws F attaching the main board.
, CN202,
CN301
CN302
F
P901
CN202
CN303
E
Digital board
CN903
F
D
CN101
E
CN201
Fig.6
Fig.7
Rear panel
D
3.1.6 Remove the FL Display board (See Figure 9)
• Prior to performing the following procedure, remove the top
cover.
(1) Disconnect the card wire from connector CN501
Display board.
(2) Remove the two screws G attaching the FL Dispiay board.
1-10 (No.YD053)
on the FL
F
Main board
F
Fig.8
CN501
G G
FL Display board
Fig.9
3.2 Loading mechanism assembly
Projection of the tray
3.2.1 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
Loading base part c
Rail of the tray
Fig.4
Projection of the tray
Fig.5
Par t e
Par t d
Slide cam
Fig.6
(No.YD053)1-11
3.2.2 Removing the traverse mechanism assembly (See Figure 6)
f
Shaft
(1) Reverse the loading mechanism assembly.
(2) A card wire is removed from a wire bracket.
(3) Remove the four screws B attaching the traverse mecha-
nism assembly. Remove the traverse mechanism assembly upward.
Loading mechanism assembly
3.2.3 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
wire
bracket
B
Traverse mechanism assembly
Fig.7
Elevator
1-12 (No.YD053)
Part f
Fig.8
g
Slide cam
Elevator
Shaft
Fig.9
Part
g
3.2.4 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.
Switch board
Pulley
Part
Pulley
㧯
Loading base
Slide cam
Belt
㧯
Fig.10
Loading motor
h
Fig.11
(No.YD053)1-13
3.3 Traverse mechanism assembly
3.3.1 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) A spring is lifted and shaft 1 is inserted in the j, and at-
tach 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.
spring
D
Leaf spring
Plate
Fig.12
Part j
spring
Shaft 2
Part k
Shaft 1
Part i
Fig.13
1-14 (No.YD053)
SECTION 4
ADJUSTMENT
4.1 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 "N320 ∗∗ ", and the main body turns to test mode.
*The portion of "∗∗" changes with destinations.
(4) To release test mode, press "POWER" key of the main body.
NOTE:
Each pressing of "SET UP" key of the remote controller in test mode changes the mode as follows.
Message area of TV screen
N320 ---------------
-------------
-------------
-------------
Becomes test mode ----
Version of backend -----
Type of flash memory
Version of frontend -----
FL Display becomes all lighting
CHCK -------------------
Check mode --------------
TEST MODE
BE VERSION :
FE VERSION :
CHECK MODE
TV screen
TEST MODE
Message area
4.2 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 "FWD SKIP" key of the main body.
(3) When indicate "P" on the FL display, initialization is completed.
PLAY key
STANDBY/ON
OPEN/
CLOSE
+
SLOW
DISPLAYON SCREEN
T
O
P
M
E
N
U
ENTER
M
E
N
U
SELECT
CLEAR
123
456
789
CANCEL RETURN
0
SOUND
TITLE/
VFP
EFFECT
GROUP DIMMER
I/P
SUBTITLEANGLE
AUDIO
SLIDE EFFECT
T
H
U
M
B
N
A
IL
/
L
IS
T
SET UP key
S
E
T
U
P
(switch of mode)
NEXTPREVIOUS
ZOOM
POWER key
(for test mode)
FWD SKIP key
(for initialize)
STOP key
(for test mode)
FL Display
(No.YD053)1-15
4.3 Upgrading of firmware
The latest firmware for upgrading is updated in "Digital Video Storage" 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.
4.3.1 Distribution method
(1) Compressed file is distributed through JS-NET.
(2) Download the version of the destination of the model, and self-extract the file.
(3) "N320XXXX.rom" file is made.(The portion of “XXXX” may change with a model and destinations.)
(4) Write "N320XXXX.rom" file in the root of CD-R/RW. (Folders such as jvc_dvd are not necessary.)
4.3.2 Upgrade method
(1) Prepare upgrade disc with "N320XXXX.rom" file written in its root.
(2) Press "POWER" key of the main body to turn the main body on.
(3) Insert the upgrade disc.
(4) The contents of disc are read automatically and upgrade is started.
(5) TV screen 1/28,2/28... if the count-up is displayed and it becomes 28/28, it will be displayed on FL display as "DONE", and up-
grade will be completed.
(6) When upgrade finishes, the main body changes from the POWER ON mode to STANDBY mode.
(7) Press the "OPEN/CLOSE" key, and open the tray to eject the disc.
(8) Set the main body at test mode, and perform initialization. Then, confirm the version of the firmware.
1-16 (No.YD053)
4.4 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.
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.YD053)1-17
5.1 Servo volume
Press OPEN
/CLOSE key
SECTION 5
TROUBLESHOOTING
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?
1-18 (No.YD053)
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
5.2 Check points for each error
5.2.1 Spindle start error
(1) Defective spindle motor
• Are there several ohms resistance between each pin of CN201
(The power supply is turned off and measured.)
(2) Defective spindle motor driver (IC201
• Has motor drive voltage of a sine wave or a rectangular wave gone out to each terminal(UOUT,VOUT,WOUT)
of CN201
• Is FG pulse output from the terminal of IC201"41"(FG) according to the rotation of the motor?
(3) Has the control signal come from the microcomputer?
• Is it "H" while the terminal of IC201
• Is the control signal input to the terminal of IC201"25"(SPDRV)?
• Is the SVREF voltage input to the terminal of IC201
(4) Is the FG signal input to the servo IC?
• Is FG pulse input to the terminal of IC301
5.2.2 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
• IC101 --- For signal from IC101 to IC301, is signal output from IC101 "40" (FE)?
5.2.3 Traverse movement NG
(1) Defective traverse driver
• Has the voltage come between terminal of CN201
(2) Defective BTL driver (IC201)
• Has the motor drive voltage gone out to IC201"11" or "14"?
(3) Has the control signal come from the microcomputer?
• TRSDRV Is the signal input? (IC301
(4) TRVSW is the signal input to microcomputer? (IC301 "177")
5.2.4 Focus ON NG
• Is FE output ? --- Pattern, IC101
• Is FODRV signal sent ? (R275) --- Pattern, IC301 "160"
• Is driving voltage sent ?IC101 "3", "4" --- If NG, pattern, driver, mechanical unit .
• Mechanical unit is defective.
5.2.5 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
Relative component or IC it self is defective.
• Microcomputer (IC301
When improperly adjusted due to defective IC.
"2,3,4" and IC201"19,18,17"?
)
)
)
"48"(MUTE1) is operating?
"26"(VREF)?
"175"(FGIN) according to the rotation of the motor?
).
- All patterns which relate to pick-up and patterns between IC101
"7" and "8" ?
"161")
"2-3","3-4","2-4"?
(No.YD053)1-19
5.2.6 Spindle CLV NG
• IC101
• Does not the input or the output of driver's spindle signal do the grip?
• Has the tracking been turned on?
• Spindle motor or driver is defective.
• Additionally, "IC101
5.2.7 Address read NG
• Besides, the undermentioned cause is thought though specific of the cause is difficult because various factors are thought.
5.2.8 Between layers jump NG (double-layer disc only)
• Mechanism defective
• Defect of driver's IC(IC201
• Defect of microcomputer(IC301
5.2.9 Neither picture nor sound is output
5.2.10 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?
5.2.11 Others
• The image is sometimes blocked, and the image stops.
• The image is blocked when going to outer though it is normal in surroundings in the disk and the stopping symptom increases.
There is a possibility with bad jitter value for such a symptom.
5.2.12 CD During normal playback operation
-- "55"(DIN), "54(DIP).
and IC301" and "Mechanism is defective(jitter)", etc. are thought.
Mechanism is defective. (jitter)
IC301
The disc is dirty or the wound has adhered.
)
)
(1) It is not possible search
• Has the tracking been turned on?
• To "(5.2.5) Tracking ON NG" in "Check points for each error" when the tracking is not normal.
• Is the feed operation normal?
To "(5.2.3) traverse movement NG" in "Check points for each error" when it is not normal.Are not there caught of the feeding
mechanism etc?
(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.
1-20 (No.YD053)
(No.YD053)1-21
Victor Company of Japan, Limited
AV & MULTIMEDIA COMPANY DIGITAL VIDEO STORAGE CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan
(No.YD053)
Printed in Japan
VPT
PARTS LIST
[XV-N320B,XV-N322S]
* All printed circuit boards and its assemblies are not available as service parts.
* (x_) in a description column shows the number of the used part.
Area Suffix
EK ------------------------ U.K.
EU -------- Western Europe
EY -------- Northern Europe
EZ --------- Eastern Europe
ER ---- Russian Federation
- Contents -
Exploded view of general assembly and parts list
DVD Traverse mechanism assembly and parts list
DVD Loading mechanism assembly and parts list
Electrical parts list
Packing materials and accessories parts list
3-2
3-4
3-6
3-8
3-13
(No.YD056)3-1
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