JVC XV-N5SL User manual

SERVICE MANUAL
DVD VIDEO PLAYER
No.A0033
Jul. 2002
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
XV-N5SL
XV-N5SL
XV-N5 DVD/SUPER VCD/VCD/CD PLAYER
TV2
2
TV1
1TV3 3
TV5
5
TV4
4TV6 6
TV8
8
TV7
7TV9 9
TV0
0
TV-/--
10 MUTING +10
TV/VIDEO
CANCEL
TITLE/
GROUP
SUBTITLERETURN
VFPAUDIOSUBTITLEREPEAT
ANGLE
DIGEST
3D
PHONIC
ZOOM
AMPVOL
RM-SXV010U
REMOTE CONTROL
OPEN/
CLOSE
TV DVD
NEXTPREVIOUS
SELECT STROBECLEAR
SLOW
- SLOW+
VOL - VOL+
CH
+
CH
-
T
O
P
M
E
N
U
M
E
N
U
O
N
S
C
R
E
E
N
C
H
O
I
C
E
ENTER
STANDBY/ON
TV DVD
For only ver.UG,US,UW,UB
Area Suffix
A -------------------- Australia
B -------------------------- U.K.
E --- Continental Europe
EN ---- Northern Europe
EV ------ Eastern Europe
EE -- Russian Federation
UG --------- Turkey,Egypt,
South Africa
US ------------- Singapore
UW ---Brazil,Mexico,Peru
UB ------------ Hong Kong

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TABLE OF CONTENTS
1 Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Warning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 Critical parts for safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.5 Preventing static electricity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.6 Handling the traverse unit (optical pickup) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.7 Important for laser products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.8 Precautions for Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Main body section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Loading assembly section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Traverse mechanism assembly section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Adjustment method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Test mode setting method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2 Initialization method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3 Method of displaying version of microcomputer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.4 Display of current value of laser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5 Display of jitter value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.6 Upgrading of firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.7 Display of region code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.8 Flap adjustment of the pick-up guide shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.9 Attention when pick-up is exchanged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.10 Confirm method of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.11 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.12 Check points for each error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5 Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.1 74LCX373MTC-X(IC512,IC513) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.2 BA5983FM-X (IC201) : 4CH Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.3 AN8703FH-V (IC101) : Frontend processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.4 BA6664FM-X (IC251) : 3Phase Motor Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.5 K4S641632F-TC75 (IC506) :CMOS SDRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.6 MN101C57DLR(IC1):System controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.7 MM1565AF-X (IC951) : 500mA Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.8 MN102L62GLF3 (IC401) : Unit CPU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.9 MN103S26EGA (IC301) : Super optical disc controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.10 MN35505-X (IC703) : DAC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.11 NDV8601VWA-BE(IC501):AV Decoder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.12 S-93C66AFJ-X (IC451,IC510) : EEPROM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.13 SST39VF160-7CEK (IC509) : 16M EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.14 STR-G6551-F8 (IC901) : Switch regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.15 TC74HC08AF-X(IC704) : 2-input and gate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6 Glossary of term and abbreviations(for AV Decoder section) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

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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 characteris-
tics 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 sub-
stitute 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, particu-
larly 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 µF 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 lo-
cal 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 safe-
ty.
When replacing them, be sure to use the parts of the same type
and rating as specified by the manufacturer. (Except the JC version)

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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.

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1.7 Important for laser products
(1) CLASS 1 LASER PRODUCT
(2) DANGER : Invisible laser radiation when open and inter
lock failed or defeated. Avoid direct exposure to beam.
(3) CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace
the complete Laser Unit if it malfunctions.
(4) CAUTION : The compact disc player uses invisible laser
radiation and is equipped with safety switches which
prevent emission of radiation when the drawer is open and
the safety interlocks have failed or are de feated.
It is dangerous to defeat the safety switches.
(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.
VARNING
Osynlig laserstrålning är denna del är öppnasd och spårren är
urkopplad. Betrakta ej strålen.
VARO
Avattaessa ja suojalulitus ohitettaessa olet alttiina näkymät-
tömälle lasersateilylle. Älä katso säteeseen.
ADVARSEL
Usynlig laserstrling 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.

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1.8 Precautions for Service
1.8.1 Handling of Traverse Unit and Laser Pickup
(1) Do not touch any peripheral element of the pickup or the actuator.
(2) The traverse unit and the pickup are precision devices and therefore must not be subjected to strong shock.
(3) Do not use a tester to examine the laser diode. (The diode can easily be destroyed by the internal power supply of the tester.)
(4) To replace the traverse unit, pull out the metal short pin for protection from charging.
(5) When replacing the pickup, after mounting a new pickup, remove the solder on the short land which is provided at the center
of the flexible wire to open the circuit.
(6) Half-fixed resistors for laser power adjustment are adjusted in pairs at shipment to match the characteristicsof the optical block.
Do not change the setting of these half-fixed resistors for laser power adjustment.
1.8.2 Destruction of Traverse Unit and Laser Pickup by Static Electricity
Laser diodes are easily destroyed by static electricity charged on clothing
or the human body. Before repairing peripheral elements of the traverse unit or pickup, be sure to take the following electrostatic
protection:
(1) Wear an antistatic wrist wrap.
(2) With a conductive sheet or a steel plate on the workbench on which the traverse unit or the pick up is to be repaired, ground
the sheet or the plate.
(3) After removing the flexible wire from the connector (CN101), short-circuit the flexible wire by the metal clip.
(4) Short-circuit the laser diode by soldering the land which is provided at the center of the flexible wire for the pickup.
After completing the repair, remove the solder to open the circuit.
Please refer to "Fig.8" of "Disassembly method" for details.

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SECTION 2
Disassembly method
There is a part different from the photograph according to the
model and the destination though explains this disassembly
method by using version U.K.
2.1 Main body section
2.1.1 How to remove a top cover
(See Figure 1)
(1) Screw A attaches a top cover to the main part. Remove
the two screws A from the both sides of the main part.
(2) Screw B attaches the top cover to the main part. Remove
the three screws B from the rear side of the main part.
(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
2.1.2 How to remove a front panel assembly
(See Figure 2, 3, and 4.)
• Please remove a top cover before removing a front panel as-
sembly.
• Front panel assembly can be removed without removing
mechanism assembly.
(1) Insert a kind of screwdriver in a hole located in the left 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 up-
per direction, with slightly opening the lower part of fitting
in an outward direction.
(3) Screw C attaches LCD display & operation switch board to
the main part. Remove the screw C.
(4) Extract a card wire from connector CN1 on LCD display &
operation switch board.
(5) Remove I screw that attach the front panel assembly to the
main part.
(6) Remove two hook "a"s and two "b"s. Remove front panel
assembly in a front direction.
Fig.2
Fig.3
Fig.4

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2.1.3 How to remove a rear panel
(See Figure 5 and 6)
• Please remove a top cover before removing a rear panel.
(1) Screw D attaches a rear panel to the main part. Remove
the nine screws D.
(2) Extract a power cord from socket P901 on a power supply
board.
(3) Remove two tie bands. Fig.5
Fig.6
2.1.4 How to remove a mechanism assembly
& servo control board
(See Figure 7 and 8)
• Please remove a top cover, a front panel assembly, and a rear
panel before removing a mechanism assembly & servo con-
trol board.
(1) Extract flat wire from connector JT911, JT912, and JT913
on a power supply board.
(2) Extract card wire from connector CN902 on a power sup-
ply board.
(3) Screw E attaches servo control & main board to the main
part. Remove one screw E.
(4) Screw F attaches a mechanism assembly. Remove three
screws F.
(5) Remove two hook "c"s. And then, remove servo control &
main board with sliding it in a front direction.
(6) Two card wires are connected to servo control & main
board. Extract this card wire from CN201 and CN202 re-
spectively.
(7) A wire is connected to servo control & main board from a
pickup. Extract it from CN101.
ATTENTION:
At this time, please extract the wire after short-circuit-
ed of two places on the wire in part d with solder.
Please remove the solder two places of part d after
connecting the wire with CN101 when reassembling.
Fig.7
Fig.8

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2.1.5 How to remove a power supply board
(See Figure 9 and 5)
• Please remove a top cover before removing a power supply
board.
(1) Extract flat wire from connector JT911, JT912, and JT913
on a power supply board.
(2) Extract card wire from connector CN902 on apower supply
board.
(3) Extract power supply cord from socket P901 on a power
supply board.
(4) Remove one screw G that attaches a power supply board
and four screws D that attaches a power supply board
from the rear side. Fig.9
Fig.5
2.1.6 How to remove LCD display & operation switch
board
(See Figure 10, 11, and 12)
• Please remove a top cover and a front panel assembly before
removing LCD display & operation switch board.
(1) Extract card wire and flat wire from connector CN2, CN3,
and CN8 on LCD display board.
(2) Remove four screws H that attach an operation switch
board, and then operation switch board.
(3) Remove support button, LCD display board, and push but-
ton in this order.
•When the main part is assembled, parts must be assem-
bled in the following order:
Push button LCD display board Side LED board
Support button Operation switch board.
•After the operation switch board is attached to its place,
let a card wire through a slit on the operation switch
board, and then insert it in CN2. (See Figure 10.)
Fig.10
Fig.11
Fig.12

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SECTION 3
Mechanism
3.1 Loading assembly section
3.1.1 Removing the clamper assembly
(See Fig.1)
(1) Remove the four screws Aattaching the clamper assembly.
(2) Move the clamper in the direction of the arrow to release
the two joints a on both sides.
ATTENTION:
When reattaching, fit the clamper to the two joints a.
Fig.1
3.1.2 Removing the tray
(See Fig2. and 3)
• Prior to performing the following procedure, remove
the clamper assembly.
(1) Push b of the slide cam into the slot on the left side
of the loading base until it stops.
(2) Draw out the tray toward the front.
ATTENTION:
Before reattaching the tray, slide the
part c of the slide cam to the right as
shown in Fig.3.
Fig.2
Fig.3

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3.1.3 Removing the traverse mechanism assembly
(See Fig.4 and 5)
• Prior to performing the following procedure, remove
the clamper assembly and the tray.
(1) Remove the four screws Battaching the traverse
mechanism assembly.
ATTENTION:
Before reattaching the traverse
mechanism assembly, pass the card
wire extending from the spindle motor
board through the notch d of the elevator. Fig.4
Fig.5
3.1.4 Removing the elevator
(See Fig.6)
• Prior to performing the following procedure, remove
the clamper assembly, the tray and the traverse
mechanism assembly.
(1) Extend each bar einside of the loading base
outward and detach the elevator shaft.
ATTENTION:
When reattaching, first fit the two shafts on the
front of the elevator to the slots f of the slide cam.
Fig.6

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3.1.5 Removing the motor assembly
(See Fig.7 and 8)
• Prior to performing the following procedure, remove
the clamper assembly, the tray.the traverse mechanism
assembly and the elevator.
(1) Remove the belt from the pulley.
(2) Remove the screw C attaching the motor assembly.
(3) Turn over the body and remove the screw D
attaching the motor assembly.
(4) Release the two tabs gretaining the motor board.
Fig.7
Fig.8

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Fig.9
3.1.6 Removing the Idle gear/pully gear/
middle gear/slitecam
(See Fig.9 to 11)
• Prior to performing the followong procedure,remove
the clamper assembly,the tray,the traverse mechanism
assembly,the elevator and the motor assembly.
(1) Press the two tabs h inward and pull out idle gear.
(2) Remove the screw Eattaching the pulley gear bracket.
Slide the pulley gear bracket in the direction of the
arrow and pull out the pulley gear.
(3) Slide the side cam in the direction of the arrow to
release the two joints iand remove upward.
(4) Remove the middle gear.
Fig.10
Fig.11

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3.2 Traverse mechanism assembly section
3.2.1 Removing the feed motor assembly
(See Fig.12)
(1) Unsolder the two soldering j on the spindle motor
board.
(2) Remove the four screws Fattaching the feed
motor assembly.
3.2.2 Removing the feed motor
(See Fig.12 to 14)
• Prior to performing the following procedure, remove
the feed motor assembly.
(1) Remove the screw G attaching the thrust spring.
ATTENTION:
When reattaching the thrust spring, make sure
that the thrust spring presses the feed gear (M)
and the feed gear (E) reasonably.
(2) Remove the feed gear (M).
(3) Pull out the feed gear (E) and the lead screw.
(4) Remove the two screws Hattaching the feed motor.
ATTENTION:
When reattaching, pass the two cables extending
from the feed motor through the notch k of the
feed holder as shown in Fig13.
Fig.12
Fig.13
Fig.14

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3.2.3 Removing the pickup
(See Fig.16 and 18)
(1) Remove the screw I attaching the T spring (S) and the
shaft holder. Remove also the plate.
ATTENTION:
When reattaching,make sure that the
T spring (S) presses the shaft.
(2) Pull out the part l of the shaft upward. Move the part m in
the direction of the arrow and detach from the spindle
base.
(3) Disengage the joint n of the pickup and the shaft in the
direction of the arrow.
(4) Pull out the shaft from the pickup.
(5) Remove the two screws J attaching the actuator.
(6) Disengage the joint of the actuator and the lead spring.
Pull out the lead spring.
Fig.15
The spring must be under the shaft when you
install pick-up.
Fig.16
Fig.17
3.2.4 Removing the shaft holder / shaft
(See Fig.18)
(1) Remove the screw Kattaching the shaft holder.
(2) Remove the shaft.
Fig.18

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3.2.5 Removing the spindle motor assembly
(See Fig.19 to 21)
(1) Remove the three screws L attaching the spindle motor on
the bottom of the mechanism base.
ATTENTION:
When reattaching, pass the card wire extending
from the spindle motor board through the notch
of the spindle base.
(2) Remove the three screws M attaching the spindle base.
Fig.19
Fig.20
Fig.21

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SECTION 4
Adjustment method
4.1 Test mode setting method
(1) Take out the disc and close the tray.
(2) Unplug the power plug.
(3) Insert power plug into outlet while pressing both "PLAY" key and "STOP" key of the main body.
(4) The player displays " TEST " on the LCD display. " " means the player version.
(5) When the power supply is turned off, test mode is released.
The mode changes as follows whenever the "CHOICE" key of remote controller is pushed in test mode.
4.2 Initialization method
Please initialize according to the following procedures when microprocessor or pick-up is exchanged and when the
up-grade is done.
(1) Makes to test mode.
(2) "PAUSE" key of the main body is pushed.
(3) The power indicator changes from green into orange.
4.3 Method of displaying version of microcomputer
(1) Makes to test mode and initializes
(2) When "CHOICE" key of remote controller is pushed once, the figure is displayed on the LCD display as follows.

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4.4 Display of current value of laser
(1) Makes to test mode and initializes.
(2) When "CHOICE" key of remote controller is pushed four times, It is displayed on the LCD display, "CHECK".
(3) Afterwards, the laser current value can be switched by pushing the key to remote controller without turning on the disc.
Remote controller "4" key --- Laser of CD
Remote controller "5" key --- Laser of DVD
(4) The laser output stops if the "STOP" key to remote controller is pushed.
It can be judged it is simply good if the displayed current value of the laser is smaller than that of the undermentioned value.
Moreover, there must be a deteriorated possibility and the pick-up must exchange the pick-up more than the
undermentioned value.
Laser current value of CD ------ 49 mA or less
Laser current value of DVD ---- 64 mA or less
4.5 Display of jitter value
(1) Makes to test mode and initializes.
(2) When "CHOICE" key of remote controller is pushed four times, It is displayed on the LCD display, "CHECK".
(3) The test disk (VT-501) is inserted, and the "PLAY" key to the main body is pushed.
(4) The jitter value is displayed on the LCD display as follows.
In the following cases, please "Flap adjustment of the pick-up guide shaft" referring to the following page.
Before using the TEST disc VT-501, careful check it if there is neither damage nor dirt on the read surface.
< In the following cases, please adjustment >
•When you exchange the pick-up
•When you exchange the spindle motor
•When the reading accuracy of the signal is bad (There is a block noise in the screen etc..)
As for the current value of the laser, the figure displayed on
the LCD display becomes a current value as it is by "mA"
unit. becomes 36 mA if displayed as 36.
Values to judge whether the jitter is allowable or not is displayed, instead of actual
jitter values.The displayed values are expressed in hexadecimal numbers.

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4.6 Upgrading of firmware
(1) The power supply is turned on pushing the "POWER" key.
(2) The up-grade disc is inserted.
(3) When LCD display of the main body changes from "READING" into "UPGRADE", cursor "UP" key ( ) of remote controller
is pushed.
(4) The up-grade starts if the entire screen becomes blue and it is displayed, "Upgrade progress".
(5) The tray opens automatically, the up-grade disc is removed.
(6) The up-grade ends if the tray closes automatically, and the screen returns to the normal screen.
(7) Please confirm the version of the microcomputer after makes to test mode and initializes.
The disc for the up-grade is usually one piece. The disc becomes two pieces according to the version. In that case, please
note the undermentioned content.
*The up-grade is done by using the STEP1 disc according to "1)" and "4)" of the above-mentioned procedure.
*The tray opens automatically after a few seconds and exchange for the disc of STEP2, please.
* The tray closes automatically. There is only about five second time that the tray opens this time,
and replace the disc quickly between those, please.
ATTENTION
• When the tray shuts with the STEP1 disc left for the tray
The up-grade starts again and exchange for the STEP2 disc, please when the tray opens automatically.
• When the tray closes with there no disc in the tray
Because the tray opens automatically, the disc of STEP2 is put on the tray.
The power supply is turned off once pushing the "POWER" key.
The up-grade starts when the "POWER" key is pushed afterwards.
* After the up-grade ends, the STEP2 disc is removed because the tray opens automatically.
* Afterwards, it is the same as 6),7) of the above-mentioned procedures.
4.7 Display of region code
(1) Makes to the stand-by state.
(2) The "POWER" key is pushed while pushing the "BACK SKIP" key and the "FORWARD SKIP" key to the main body.
(3) Region code is displayed on the LCD display as follows.

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4.8 Flap adjustment of the pick-up guide shaft
4.8.1 Tool list for adjustment
(1) Puts into the state to display the jitter value on the LCD display referring to "3.5 Display of the jitter value".
(2) A hex-head wrench is inserted in the hole three places for the adjustment in the main body bottom, and the adjustment screw
is turned, and matches so that the jitter value displayed on the LCD display mey become maximum value.
As this value is bigger, the jitter is more allowable in this model.
<POINT>
(1) Turns in the forward or the opposite direction, and makes to the position where the jitter value is good the half rotation of ad-
justment screw a and b(180 degrees) respectively.
(2) Afterwards, adjustment screw b and c are turned in the same way, and makes to the best position.
Hex wrench for adjustment
Off-the-shelf (1.3mm)
Test disc VT-501 or VT-502
Stand of about 150mm in height
2 pcs