JVC XV-N510B User manual

SERVICE MANUAL
COPYRIGHT © 2004 Victor Company of Japan, Limited No.YD016
2004/8
DVD AUDIO/VIDEO PLAYER
YD01620048XV-N510B,XV-N512S
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
Area Suffix
J ------------------------ U.S.A.
C --------------------- Canada
STANDBY/ON
2
5
8
1
4
7
3
6
9
010 +10
TITLE
/GROUP TV/VIDEO CANCELRETURN PAGE
VOL VOL+
CH+
CH
VFPZOOM
AMP
VOL
AUDIO
3D PHONIC
SUB TITLE ANGLE
DIMMER
REPEAT
OPEN
/CLOSE
TV1 TV2 TV3
TV4 TV5 TV6
TV7 TV8 TV9
TV-/-- TV0 MUTING
TV DVD
NEXTPREVIOUS
SELECTCLEAR
SLOW
- SLOW+
T
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M
E
N
U
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E
N
U
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N
S
C
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E
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ENTER
TV DVD
PROGRESSIVE
SCAN
fs/Rate
XV-N510BJC, XV-N510BCC, XV-N512SJC, XV-N512SCC

1-2 (No.YD016)
SPECIFICATION
• Manufactured under license from Dolby Laboratories. “Dolby”,”MLP Lossless and the double-D symbol are trademarks of Dolby
Laboratories.
• “DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc.
• This product incorporates copyright protection technology that is protected by U.S. patents and other intellectual property rights. Use
of this copyright protection technology must be authorized by Macrovision, and is intended for home and other limited viewing uses
only unless otherwise authorized by Macrovision. Reverse engineering or disassembly is prohibited.
Digital output signal chart
XV-N510B,XV-N512S for J,C
General
Readable discs DVD AUDIO, DVD VIDEO, DVD-R (Video format), DVD-RW (Video format/VR format), DVD-RAM (VR
format), SVCD, Video CD, Audio CD (CD-DA), CD-R/RW (CD-DA, SVCD, Video CD, MP3/WMA format,
JPEG)
Video format REMOTE, 480i (Interlaced scan)/480p (Progressive scan) selectable
Other
Power requirements AC 120 V~, 60 Hz
Power consumption 13 W (POWER ON), 2.0 W (STANDBY mode)
Mass 1.9 k g (4.2 lbs)
Dimensions (W ×H ×D) 435 mm×44 mm ×258.6 mm ((17-3/16 inch ×1-3/4 inch ×10-3/16 inch)
Video outputs
COMPONENT (pin jacks) Y Output: 1.0 Vp-p (75 Ω)
PB/PR Output: 0.7 Vp-p (75 Ω)
VIDEO OUT (pin jack) 1.0 Vp-p (75 Ω)
S-VIDEO OUT (S jack) Y Output: 1.0 Vp-p (75 Ω)
C Output: 286 mVp-p (75 Ω)
Horizontal resolution 500 lines or more
Audio outputs
ANALOG OUT (pin jack) 2.0 Vrms (10 kΩ)
DIGITAL OUT (COAXIAL) 0.5 Vp-p (75 Ωtermination)
DIGITAL OUT (OPTICAL) -21 dBm to -15 dBm (peak)
Audio characteristics
Frequency response CD (sampling frequency 44.1 kHz):2 Hz to 20 kHz
DVD (sampling frequency 48 kHz):2 Hz to 22 kHz
(4 Hz to 20 kHz for DTS and Dolby Digital bitstream signals)
DVD (sampling frequency 96 kHz):2 Hz to 44 kHz
DVD (sampling frequency 192 kHz/176.4 kHz):2 Hz to 88 kHz
Dynamic range 16 bit: More than 98 dB
20 bit/24 bit: More than 106 dB
Wow and flutter Unmeasurable (less than +- 0.002%)
Total harmonic distortion 16 bit: less than 0.006%
20 bit/24 bit: less than 0.005%
* Notes for PX model (Check the specification indication on the rear panel.)
Power requirements AC 110 V to 240 V , 50 Hz/60 Hz
Power consumption 13 W (POWER ON), 2.0 W(STANDBY mode)
Disc type Output
PCM ONLY DOLBY DIGITAL/PCM STREAM/PCM
DVD with 48/44.1 kHz, 16/20/24
bit linear PCM
DVD AUDIO with MLP
48/44.1 kHz, 16/20/24 bit, stereo linear PCM
DVD with 192/176.4/96/88.2 kHz,
16/22/24 bit linear PCM
DVD AUDIO with MLP
48/44.1 kHz, 16/20/24 bit, stereo linear PCM (Down sampling)
DVD with DTS 48 kHz, 16 bit, stereo linear PCM DTS bitstream
DVD with Dolby Digital 48 kHz, 16 bit, stereo linear PCM Dolby Digital bitstream
SVCD/Video CD/Audio CD 44.1 kHz, 16 bit, stereo linear PCM
Audio CD with DTS 44.1kHz, 16 bit, stereo linear PCM DTS bitstream
CD-R/RW with MP3/WMA Linear PCM

(No.YD016)1-3
SECTION 1
PRECAUTION
1.1 Safety Precautions
(1) This design of this product contains special hardware and
many circuits and components specially for safety purpos-
es. 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 per-
formed 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 characteris-
tics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by us-
ing replacement components rated for higher voltage, watt-
age, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Ser-
vice 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 charac-
teristics 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 reassem-
bling.
(5) Leakage shock hazard testing)
After reassembling the product, always perform an isola-
tion check on the exposed metal parts of the product (an-
tenna 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, particular-
ly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage cur-
rent 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 sensi-
tivity in the following manner. Connect a 1,500 ohm 10W
resistor paralleled by a 0.15 F AC-type capacitor be-
tween 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 pre-
forming 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.YD016)
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.

(No.YD016)1-5
1.7 Precautions for Service
1.7.1 Handling of Traverse Unit and Laser Pickup
(1) Do not touch any peripheral element of the pickup or the actuator.
(2) The traverse unit and the pickup are precision devices and therefore must not be subjected to strong shock.
(3) Do not use a tester to examine the laser diode. (The diode can easily be destroyed by the internal power supply of the tester.)
(4) To replace the traverse unit, pull out the metal short pin for protection from charging.
(5) When replacing the pickup, after mounting a new pickup, remove the solder on the short land which is provided at the center of
the flexible wire to open the circuit.
(6) Half-fixed resistors for laser power adjustment are adjusted in pairs at shipment to match the characteristics of the optical block.
Do not change the setting of these half-fixed resistors for laser power adjustment.
1.7.2 Destruction of Traverse Unit and Laser Pickup by Static Electricity
Laser diodes are easily destroyed by static electricity charged on clothingor the human body. Before repairing peripheral elements of
the traverse unit or pickup, be sure to take the following electrostatic protection:
(1) Wear an antistatic wrist wrap.
(2) With a conductive sheet or a steel plate on the workbench on which the traverse unit or the pick up is to be repaired, ground the
sheet or the plate.
(3) It solders to two short circuit sections on the substrate of a pick-up.
(4) After removing the flexible wire from the connector (CN101), short-circuit the flexible wire by the metal clip.
(5) Short-circuit the laser diode by soldering the land which is provided at the center of the flexible wire for the pickup.
After completing the repair, remove the solder to open the circuit.
Short circuit Pick-up
*Please refer to the disassembly method for details.
Gear1
Main board CN101

1-6 (No.YD016)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

(No.YD016)1-7
SECTION 3
DISASSEMBLY
3.1 Main body section
3.1.1 Removing the top cover (See Figure 1)
(1) Remove the two screws Aattaching the top cover on both
sides of the main body.
(2) Remove the three screws Battaching 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.
Fig.1
B
B
B
Ax 2
TOP COVER
TOP COVER
TOP COVER

1-8 (No.YD016)
3.1.2 Removing the mechanism 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 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 can-
not 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 Cattaching the mechanism as-
sembly.
(4) A tray is made to slide ahead.
(5) A gear 1 is turned counterclockwise. Then, a pick-up unit
moves back.
(6) It solders to two asections on the pick-up unit.
(7) Disconnect the card wire from connector CN201, CN202,
CN101 on the main board.
ATTENTION:
Please extract the wire after short-circuited of two places
on the wire in part awith solder. Please remove the sol-
der two places of part aafter connecting the wire with
CN101 when reassembling.
CAUTION:
Be sure to solder the short land sections “a” on the pick-
up unit before disconnecting the card wire from connec-
tor CN101 on the main board.
If the card wire is disconnected without attaching solder,
the pick-up unit may be destroyed by static electricity.
(8) Remove the mechanism assembly by lifting the rear part of
the mechanism assembly.
Fig.2
Fig.3
Fig.4
Front panel assembly
Mechanism assembly
Tray
Fitting
Hole and lever
Push
Push
CN201Main board
C
C
C
CN101
Mechanism assembly
CN202
Part aPick-up
Gear1
Main board CN101

(No.YD016)1-9
3.1.3 Removing the front panel assembly (See Figure 5, Figure 6, Figure 7)
• Prior to performing the following procedure, remove the top
cover and mechanism assembly.
(1) Disconnect the card wire from connector CN3 on the power
board.
(2) Hook band care removed respectively, and the front panel
assembly is removed.
(3) Remove the three screws Dattaching the FL display board.
(4) Disconnect the card wire from connector CN801 on the FL
display board.
Fig.5
Fig.6
Fig.7
3.1.4 Removing the rear panel (See Figure 8)
• Prior to performing the following procedure, remove the top
cover.
(1) Remove the eight screws Eattaching the rear panel.
(2) Remove the power cord bushing.
Fig.8
Power board
CN3
Front panel assembly
Hook b
Hook b
Hook c
Hook c
Front panel
assembly
Hook c
Front panel assembly
DD
FL Display board
CN801
Bushing
EE

1-10 (No.YD016)
3.1.5 Removing the main board and power board. (See Figure 9)
• Prior to performing the following procedure, remove the top
cover and rear panel.
(1) Remove the two screws Fattaching the main board.
(2) Disconnect the card wire from connector CN809, CN101,
CN201, CN202 on the main board.
(3) Disconnect the flat wire from connector CN633 on the main
board.
(4) Disconnect the socket wire from connector CN2 on the
power board.
(5) Remove the four screws Gattaching the power board.
(6) Disconnect the socket wire from connector CN1 on the
power board.
Fig.9
Power boardMain board CN2
G
G
CN1
CN809
G
CN101
F
CN633
CN201
CN202 F

(No.YD016)1-11
3.2 Loading mechanism assembly
3.2.1 Removing the tray (See Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6)
(1) Push aof 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 Aattaching 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 bof the loading base.
Then, remove the tray upward. (See Figure 4.)
Attaching the tray:
Engage cof the loading base to the projection of the tray while
tilting the tray to the left. Turn the tray in a direction of the ar-
row, 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 dof the slide cam can be inserted in eof
the tray. (See Figure 6.)
Fig.1
Fig.2
Fig.3
Fig.4
Fig.5
Fig.6
Tray
Push
Loading base
Slide cam part a
Tray
AA
Slide bracket
Tray
The point in the left rear part
Loading base part bRail of the tray
Projection of the tray
Projection of the tray
Loading base part c
Slide cam
Part d
Part e

1-12 (No.YD016)
3.2.2 Removing the traverse mechanism assembly (See Figure 7)
(1) Reverse the loading mechanism assembly.
(2) A card wire is removed from a wire bracket.
(3) Remove the four screws Battaching the traverse mecha-
nism assembly. Remove the traverse mechanism assem-
bly upward.
Fig.7
3.2.3 Removing the elevator (See Figure 8 and Figure 9)
• Prior to the following procedure, remove the traverse mecha-
nism 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 gto the two shafts on the front part of
the elevator. And then, attach the elevator.
Fig.8
Fig.9
Loading mechanism assembly
B
B
B
B
Traverse mechanism assembly
wire
bracket
Part fPart
f
Elevator
Slide cam g
g
Shaft
Shaft
Elevator

(No.YD016)1-13
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 Cattaching the loading motor.
(3) Remove two solders hon the switch board.
Fig.10
Fig.11
Loading base
Slide cam
Belt
C
C
Pulley Pulley
Loading motor
Switch board Part h

1-14 (No.YD016)
3.3 Traverse mechanism assembly
3.3.1 Removing the pickup (See Figure 12, Figure 13)
• Prior to the following procedure, remove the traverse mecha-
nism assembly.
(1) Remove one screw Dattaching the plate.
(2) Remove the plate and the leaf spring.
(3) Lift iof the shaft 1, and pull out the shaft 1from j.
(4) Remove kof the pickup from the shaft 2.
Attaching the pickup:
(1) Engage kof the pickup to the shaft 2.
(2) Insert the shaft 1in 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.
Fig.12
Fig.13
D
Plate
Leaf spring
Part i
Shaft 1
Shaft 2 Part k
Part j

(No.YD016)1-15
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 "∗0", and the main body turns to test mode. "∗" means the destination, and "0" means parameter adjust-
ment status.The destination and a back end of version are displayed on the upper left of TV screen.
(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.
4.2 Method of displaying version of firmware
(1) Set the main body at test mode.
(2) Press "SET UP" key of the remote controller once. Then, version number and alphabetical letter of the front end and the back
end are displayed in the FL display as follows:
4.3 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.)
Becames test mode
Version of firmware
Device key index
Check mode
Not used
0 --------------------------------------
_ _ ---------------------
---------------------
FL Display becames all lighting
CHECK ---------------------------------
EXPERT -------------------------------
FL Display (example)
0B_09 Back end
Front end
STANDBY/ON
2
5
8
1
4
7
3
6
9
010 +10
TITLE
/GROUP TV/VIDEO CANCELRETURN PAGE
VOL VOL+
CH+
CH
VFPZOOM
AMP
VOL
AUDIO
3D PHONIC
SUB TITLE ANGLE
DIMMER
REPEAT
OPEN
/CLOSE
TV1 TV2 TV3
TV4 TV5 TV6
TV7 TV8 TV9
TV-/-- TV0 MUTING
TV DVD
NEXTPREVIOUS
SELECTCLEAR
SLOW
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POWER key
SET UP key
(change of mode)
STOP key
(for test mode)
PAUSE key
(for initialize)
PLAY key
(for test mode)
FL Display

1-16 (No.YD016)
4.4 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.
4.5 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 start-
ing.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:
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 informa-
tion.) 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 soft-
ware) 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.
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
STANDBY/ON
2
5
8
1
4
7
3
6
9
010 +10
TITLE
/GROUP TV/VIDEO CANCELRETURN PAGE
VOL VOL+
CH+
CH
VFPZOOM
AMP
VOL
AUDIO
3D PHONIC
SUB TITLE ANGLE
DIMMER
REPEAT
OPEN
/CLOSE
TV1 TV2 TV3
TV4 TV5 TV6
TV7 TV8 TV9
TV-/-- TV0 MUTING
TV DVD
NEXTPREVIOUS
SELECTCLEAR
SLOW
- SLOW+
T
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PROGRESSIVE
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POWER key
STOP key
(for test mode)
PLAY key
(for test mode)
BACKWARD SKIP key
(for all initialize : it pushes 2 seconds or more.)
FL Display

(No.YD016)1-17
4.6 Display of current value of laser
(1) Set the main body at test mode.
(2) Press "SET UP" key of the remote controller four 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.
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 65 mA or less is normal.
The laser current value of over 66 mA is not normal. Laser diode of the pickup has been deteriorated.
DVD:
The laser current value of 80 mA or less is normal.
The laser current value of over 81 mA is not normal. Laser diode of the pickup has been deteriorated.
To return to test mode, press "STOP" key of the main body.
4.7 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.)
2530 0000
FL Display (Example)
Remote controller "4" key --- Laser of CD
Remote controller "5" key --- Laser of DVD
STANDBY/ON
2
5
8
1
4
7
3
6
9
010 +10
TITLE
/GROUP TV/VIDEO CANCELRETURN PAGE
VOL VOL+
CH+
CH
VFPZOOM
AMP
VOL
AUDIO
3D PHONIC
SUB TITLE ANGLE
DIMMER
REPEAT
OPEN
/CLOSE
TV1 TV2 TV3
TV4 TV5 TV6
TV7 TV8 TV9
TV-/-- TV0 MUTING
TV DVD
NEXTPREVIOUS
SELECTCLEAR
SLOW
- SLOW+
T
O
P
M
E
N
U
M
E
N
U
O
N
S
C
R
E
E
N
S
E
T
U
P
ENTER
TV DVD
PROGRESSIVE
SCAN
fs/Rate
POWER key
SET UP key
(change of mode)
STOP key
(for test mode)
PLAY key
(for test mode)
FL Display
4 key (laser of CD)
5 key (laser of DVD)

1-18 (No.YD016)
4.7.1 Tool for adjustment
*Stud: One set (four studs), Part number: JIGXVS40 (Note: One of the four studs is not used here.)
*The phillips screwdriver for adjustment --- goods on the market
*Test disc ---- Parts number : VT-501
4.7.2 Preparation for adjustment
(1) See the disassembly procedure, and remove the mechanism assembly from the main body.
(2) Attach the three studs to the mechanism assembly.
(3) Put the mechanism assembly in the canter of the main body, and connect the three card wire from the connector
CN101,CN201,CN202 on the main board.
Stud
Stud
Main board CN101 CN201
CN202

(No.YD016)1-19
4.7.3 Adjustment
(1) Set the main body at test mode.
(2) Press the "SET UP" key of the remote controller four times, and the FL display is displayed "CHECK".
(3) Insert a test disc (VT-501), and press the numeric key "1" of the remote controller.
(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 minimum jitter value
is displayed on the FL display.
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 aand bto the
same angle in the right direction. And turn
the adjustment screws aand bto the
same angle in the left direction. Then, turn
the screws aand bin either the right or
the left direction to increase the number of
jitter. Don't turn the adjustment screw c.
Loading mechanism assembly
Traverse mechanism assembly
Screw a Screw b
Screw c
STANDBY/ON
2
5
8
1
4
7
3
6
9
010 +10
TITLE
/GROUP TV/VIDEO CANCELRETURN PAGE
VOL VOL+
CH+
CH
VFPZOOM
AMP
VOL
AUDIO
3D PHONIC
SUB TITLE ANGLE
DIMMER
REPEAT
OPEN
/CLOSE
TV1 TV2 TV3
TV4 TV5 TV6
TV7 TV8 TV9
TV-/-- TV0 MUTING
TV DVD
NEXTPREVIOUS
SELECTCLEAR
SLOW
- SLOW+
T
O
P
M
E
N
U
M
E
N
U
O
N
S
C
R
E
E
N
S
E
T
U
P
ENTER
TV DVD
PROGRESSIVE
SCAN
fs/Rate
POWER key
SET UP key
(change of mode)
STOP key
(for test mode)
PLAY key
(for test mode)
FL Display
1 key (display of jitter value)
6 key
(display of jitter value)

1-20 (No.YD016)
4.8 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.
(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) A power supply will be turned off if it waits for a while. 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.
When up-grade is completed
Upgrade application initializing...
While upgrading (blue screen)
A
fter inserting the up-grade disc
Firmware upgrade Disc ... press UP
NO DISC
STANDBY/ON
2
5
8
1
4
7
3
6
9
010 +10
TITLE
/GROUP TV/VIDEO CANCELRETURN PAGE
VOL VOL+
CH+
CH
VFPZOOM
AMP
VOL
AUDIO
3D PHONIC
SUB TITLE ANGLE
DIMMER
REPEAT
OPEN
/CLOSE
TV1 TV2 TV3
TV4 TV5 TV6
TV7 TV8 TV9
TV-/-- TV0 MUTING
TV DVD
NEXTPREVIOUS
SELECTCLEAR
SLOW
- SLOW+
T
O
P
M
E
N
U
M
E
N
U
O
N
S
C
R
E
E
N
S
E
T
U
P
ENTER
TV DVD
PROGRESSIVE
SCAN
fs/Rate
POWER key
SET UP key
(change of mode)
UP key
(for firmware upgrade)
STOP key
(for test mode)
PLAY key
(for test mode)
PAUSE key
(for initialize)
OPEN/CLOSE key
FL Display