JVC NX-DV3 Service Manual

SERVICE MANUAL

COMPACT COMPONENT MD SYSTEM

MB35120052

NX-DV3

Area suffix

UB -------------------- Hong Kong
UJ --------------------- U.S.Military

(SP-NXDV3S)

(CA-NXDV3)

(SP-NXDV3S)

(SP-NXDV3S)(SP-NXDV3S)

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41

COPYRIGHT © 2005 Victor Company of Japan, Limited

No.MB351

2005/2

SPECIFICATION

MD/DVD receiver (CA-NXDV3)

Amplifier Output power Front 30 W + 30 W at 4 Ω (10% THD)

Surround 30 W + 30 W at 4 Ω (10% THD)

Input terminals Analog AUX×1, 500 mV/47 kΩ

Digital Digital optical input × 2

-23 dBm to -15 dBm (Optical square terminal)
(Compatible with frequency of 32 kHz 44.1 kHz and 48 kHz)

Output terminals Analog Front speaker×2

Impedance 4 Ω - 16 Ω
Surround speaker×2
Impedance 4 Ω - 16 Ω
Headphone (×1)
Impedance 16 Ω - 1 kΩ
Sub woofer×1

Digital DVD/CD optical output × 1

-23 dBm to -15 dBm (Optical square terminal)

Other AV COMPU LINK × 2 (Ø 3.5)

VIDEO × 1
S-VIDEO × 1
COMPONENT × 1

Tuner Frequency FM 87.50 MHz - 108.00 MHz

AM 531 kHz - 1710 kHz (9kHz STEP)

530 kHz - 1710 kHz (10kHz STEP)

Antenna FM 75 Ω Unbalanced

AM Loop antenna

Timer Timer Format 1 Program behavior (switch between ONCE REC and DAILY)

Sleep timer 10, 20, 30, 60, 90, 120, 150 minutes (Auto dimmer)

Clock display 24-hour format

DVD player Playable discs DVD VIDEO, DVD AUDIO, CD, VCD, SVCD,

CD-R/CDRW (CD, VCD, SVCD, MP3/WMA/JPEG format),
DVD-R/DVD-RW (video format)

MD recorder Audio playing system MiniDisc digital audio system

Recording system Magneto-optical overwrite system

Reading system Non-contact, semiconductor laser pickup

Recording/Playback time
(when using an 80-minute MD)

Sampling frequency 44.1 kHz

Audio compression system ATRAC (Adaptive Transform Acoustic Coding)/ATRAC3 (MDLP)

Number of channels 2 channel, stereo

General Power source AC 220 V , 50 Hz

Power consumption 30 W (at operation)

Dimensions 260 mm (W) × 80 mm (H) × 358 mm (D)

Mass (approx.) 3.8 kg

SP 80 minutes

LP2 160 minutes

LP4 320 minutes

1.3 W (on standby, display off)

1-2 (No.MB351)

Speaker

Front (SP-NXDV3F) System 2-way bass reflex type Magnetically shielded type

Speakers Woofer: 10 cm × 1

Tweeter: 4 cm × 1

Power handling capacity 30 W

Impedance 4 Ω

Frequency range 56 Hz - 40 kHz

Sound pressure level 85 dB/W·m

Dimensions 125 mm (W) × 251 mm (H) × 188 mm (D)

Mass (approx.) 2.1 kg (1 unit)

Center/surround (SP-NXDV3S) System 1-way bass reflex type,

Speakers Magnetically shielded type 5.5 cm × 1

Power handling capacity 30 W

Impedance 4 Ω

Frequency range 85 Hz - 20 kHz

Sound pressure level 78 dB/W·m

Dimensions 120 mm (W) × 70 mm (H) × 93 mm (D)

(242 mm (W) × 81 mm (H) × 97 mm (D)*1)

Mass (approx.) 0.45 kg (1 unit)

(1.3 kg*1)

*1: When the supplied stand is used (two stands are combined)

• U.S. and foreign patents licensed from Dolby Laboratories.

• Design and specifications are subject to change without notice.

(No.MB351)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 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
in the following manner. Connect a 1,500
paralleled by a 0.15
exposed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC

Ω per volt or more sensitivity

Ω 10W resistor

µF AC-type capacitor between an

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.).

AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)

0.15 F AC TYPE

Place this
probe on

1500 10W

Good earth ground

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.
(This regulation dose not Except the J and C version)

each exposed
metal part.

1-4 (No.MB351)

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 laser products.
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.

(caption)
Anti-static wrist strap

1M

Conductive material
(conductive sheet) or iron palate

(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 Attention when traverse unit is decomposed

*Please refer to "Disassembly method" in the text for the pickup unit.

• Apply solder to the short land sections before the flexible wire is disconnected from the connecto on the servo board. (If the flexible
wire is disconnected without applying solder, the pickup may be destroyed by static electricity.)

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

Short land section

Pickup

Card wireTraverse mechanism assembly

(No.MB351)1-5

1.8 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 CD,MD and DVD 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 defeated. 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 here in may result in
hazardous radiation exposure.

Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.

REPRODUCTION AND POSITION OF LABELS

WARNING LABEL

CAUTION : Visible and Invisible

laser radiation when open and
interlock failed or defeated.
AVOID DIRECT EXPOSURE TO
BEAM. (e)

CLASS 1
LASER PRODUCT

ADVARSEL : Synlig og usynlig
laserstråling når maskinen er
åben eller interlocken fejeler.
Undgå direkte eksponering til
stråling. (d)

CAUTION : Visible and Invisible
laser radiation when open and
interlock failed or defeated.
AVOID DIRECT EXPOSURE TO
BEAM. (e)

VARNING : Synlig och
osynling laserstrålning när
den öppnas och spärren är
urkopplad. Betrakta ej
strålen. (s)

VARNING : Synlig och
osynling laserstrålning när
den öppnas och spärren är
urkopplad. Betrakta ej
strålen. (s)

VARO : Avattaessa ja suojalukitus
ohitettuna tai viallisena olet alttiina
näkyvälle ja näkymättömälle
lasersäteilylle. Vältä säteen
kohdistumista suoraan itseesi. (f)

ADVARSEL : Synlig og usynlig
laserstråling når maskinen er
åben eller interlocken fejeler.
Undgå direkte eksponering til
stråling. (d)

VARO : Avattaessa ja suojalukitus
ohitettuna tai viallisena olet alttiina
näkyvälle ja näkymättömälle
lasersäteilylle. Vältä säteen
kohdistumista suoraan itseesi. (f)

1-6 (No.MB351)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

(No.MB351)1-7

SECTION 3

r

DISASSEMBLY

3.1 Main body section

3.1.1 Removing the metal cover
(See Figs.1 to 3)

(1) From the both sides of the main body, remove the four

screws A attaching the metal cover. (See Figs.1 and 2)

(2) From the back side of the main body, remove the two

screws B attaching the metal cover to the rear cover. (See
Fig.3)

(3) Take out the metal cover.

3.1.2 Removing the rear panel
(See Fig.4)

• Prior to performing the following procedure, remove the metal

cover.
(1) From the back side of the main body, remove the thirteen

screws C and screw D attaching the rear panel.

(2) Release the two joints a, and take out the rear panel.

Metal cover

C

A

B

Metal cove

Fig.1

A

Fig.2

Metal cover

Fig.3

1-8 (No.MB351)

CD

Joint aJoint a Rear panel

Fig.4

3.1.3 Removing the front panel assembly

(See Figs.5 and 6)

• Prior to performing the following procedure, remove the metal

cover.
(1) From the top side of the main body, disconnect the card

wire from the connector CN703 on the micon board. (See
Fig.5)

(2) From the bottom side of the main body, remove the three

screws E attaching the front panel assembly. (See Fig.6)

(3) Release the joints b and c attaching the front panel assem-

bly. (See Fig.6)

(4) Take out the front panel assembly from the main body for-

ward.

Headphone board

CN401

H

Front panel assembly

CN221

CN791

CN703

H

3.1.4 Removing the tuner

(See Figs.5 and 7)

• Prior to performing the following procedure, remove the metal

cover.
(1) From the top side of the main body, disconnect the card

wire from the connector CN761 on the micon board. (See
Fig.5)

(2) From the back side of the main body, remove the two

screws F attaching the tuner to the rear panel. (See Fig.7)

(3) Take out the tuner from the main body.

3.1.5 Removing the micon board

(See Figs.5 and 7)

• Prior to performing the following procedure, remove the metal

cover.

Reference:

Remove the rear panel as required. (Refer to 3.1.2 "Removing
the rear panel")
(1) From the back side of the main body, remove the five

screws G attaching the micon board. (See Fig.7)

(2) From the top side of the main body, remove the four screws

H attaching the micon board. (See Fig.5)

(3) Disconnect the parallel wire from the connector CN401 on

the headphone board. (See Fig.5)

(4) Disconnect the card wires from the connectors (CN211,

CN212, CN221, CN701, CN702, CN703 and CN761) on
the micon board. (See Fig.5)

(5) Disconnect the parallel wires from the connectors (CN201,

CN222, CN231 and CN751) on the micon board. (See
Fig.5)

(6) Take out the micon board.

CN222

CN201

H

CN751

Ground point

Micon board

E

Earth wire

Fig.5

Fig.6

CN761

CN211

CN212

H

CN231

CN701

CN702

Tuner

Joint cJoint bJoint c

GF

Rear panel

Fig.7

(No.MB351)1-9

3.1.6 Removing the main board
(See Fig.8)

• Prior to performing the following procedures, remove the metal

cover, tuner and micon board.
(1) From the top side of the main body, remove the screw J

and screw K attaching the main board.

(2) Disconnect the card wires from the connectors (CN603 and

CN604) on the main board.

(3) Disconnect the parallel wires from the connectors (CN605

and CN606) on the main board.

Reference:

When attaching the main board, align the slot of it with the pro­jection d of the main body.

Projection d

CN604

CN605

K

J

Main boardCN603

CN606

Fig.8

1-10 (No.MB351)

3.1.7 Removing the speaker terminal board

A

(See Fig.9)

• Prior to performing the following procedures, remove the metal

cover, tuner, micon board and main board.
(1) From the top side of the main body, remove the screw L at-

taching the speaker terminal board.

(2) Disconnect parallel wire from the connector CN381 on the

speaker terminal board.

(3) Take out the speaker terminal board.

Reference:

After attaching the speaker terminal, fix the parallel wire with
the wire clamp as before.

3.1.8 Removing the amplifier board

(See Figs.9 to 12)

• Prior to performing the following procedures, remove the metal

cover, tuner, micon board and main board.
(1) From the top side of the main body, remove the two screws

M and two screws N attaching the amplifier assembly. (See
Fig.9)

(2) Disconnect the parallel wire from the connector CN381 on

the speaker terminal board, and take out amplifier assem­bly. (See Fig.9)

(3) From the bottom side of the amplifier assembly, remove

the rubber sheet. (See Fig.10)

(4) Remove the screw P attaching the heat sink, and take out

the heat sink. (See Fig.10)

Caution:

After attaching the heat sink, put the rubber sheet on the
heat sink as before.

(5) From the both sides of the amplifier assembly, release the

joints e, and take out the amplifier board. (See Figs.10 and

11)

Reference:

After attaching the amplifier assembly, fix the parallel wire with
the wire clamp as before.

Earth wire

Wire clamp

N

L

MN

Fig.9

Amplifier assembly

Speaker terminal board

P

Amplifier assembly

M

CN381

Heat sink

mplifier board

Rubber sheet

Fig.10

Joint e Amplifier board

Fig.11

Joint e

Fig.12

(No.MB351)1-11

3.1.9 Removing the fan motor
(See Fig.13)

• Prior to performing the following procedures, remove the metal

cover, rear panel, tuner and micon board.

Reference:

Remove the main board as required. (Refer to 3.1.6 "Remov­ing the main board")
(1) From the top side of the main body, remove the screw Q

attaching the fan motor.

(2) Remove the tape attaching the fan wire to the SW power

unit.

(3) Take out the fan motor.

Reference:

• When attaching the screw Q, attach it with the wire clamp.

• After attaching the fan motor, fix the fan wire with the new
tape.

3.1.10 Removing the SW power unit
(See Fig.13)

• Prior to performing the following procedures, remove the metal

cover, rear panel, tuner and micon board.
(1) From the top side of the main body, remove the screw R at-

taching the SW power unit.

(2) Remove the tape attaching the fan wire to the SW power

unit.

(3) Take out the SW power unit.

Reference:

After attaching the fan motor, fix the fan wire with the new tape.

R

Q

SW power unit Wire clamp

Fan wire Fan motor

Fig.13

1-12 (No.MB351)

3.1.11 Removing the DVD mechanism assembly

(See Fig.14)

• Prior to performing the following procedures, remove the metal

cover, front panel assembly and micon board.
(1) From the top side of the main body, disconnect the card

wires from the connectors (CN603 and CN604) on the
main board.

(2) Disconnect the card wire from the connector CN291 on the

holder board.

(3) Remove the three screws S attaching the DVD mechanism

assembly.

(4) Take out the DVD mechanism assembly.

3.1.12 Removing the MD mechanism assembly

(See Figs.14 to 16)

• Prior to performing the following procedures, remove the metal

cover, front panel assembly and micon board.
(1) From the top side of the main body, disconnect the card

wire from the connector CN291 on the holder board. (See
Fig.14)

(2) Remove the two screws T attaching the MD mechanism

assembly, and take out the MD mechanism assembly with
MD bracket. (See Fig.14)

(3) From the left side of the MD mechanism assembly, remove

the two screws U attaching the MD bracket L to the MD
mechanism assembly. (See Fig.15)

(4) From the right side of the MD mechanism assembly, re-

move the two screws V attaching the MD bracket R to the
MD mechanism assembly. (See Fig.16)

Reference:

When attaching the MD mechanism assembly, align it with the
slot f and slot g of the main body. (See Fig.14)

MD mechanism assembly

T

Slot f

DVD mechanism assembly

Slot g

S

Main boardCN291 CN603

CN604Holder board

Fig.14

S

S

3.1.13 Removing the holder board

(See Fig.15)

• Prior to performing the following procedures, remove the metal

cover, front panel assembly, micon board and MD mechanism
assembly.
(1) From the left side of the MD mechanism assembly, remove

the screw W attaching the holder board to the MD bracket
L.

(2) Disconnect the card wire from the connector CN292 on the

holder board.

(3) Take out the holder board.

3.1.14 Removing the headphone board

(See Fig.16)

• Prior to performing the following procedures, remove the metal

cover, front panel assembly, micon board and MD mechanism
assembly.
(1) From the right side of the MD mechanism assembly, re-

move the screw X attaching the headphone board to the
MD bracket R.

(2) Take out the headphone board.

CN292

W U

Holder board MD bracket L

Fig.15

X V

Headphone board MD bracket R

Fig.16

(No.MB351)1-13

3.1.15 Removing the FL board
(See Fig.17)

• Prior to performing the following procedures, remove the metal

cover and front panel assembly.
(1) From the inside of the front panel assembly, remove the

eight screws Y attaching the FL board.

(2) Disconnect the connector CN881 on the FL board from the

SW board, and take out the FL board from the front panel
assembly.

Reference:

When attaching the FL board, be careful not to damage the FL
display.

3.1.16 Removing the LED assembly
(See Figs.17 to 19)

• Prior to performing the following procedures, remove the metal

cover and front panel assembly.
(1) From the bottom side of the front panel assembly, remove

the two screws Z attaching the LED assembly. (See Fig.18)

(2) From the inside of the front panel assembly, remove the

two screws AA and six screws AB attaching the LED as­sembly. (See Fig.17)

(3) Release the claws h and claws i of the LED assembly. (See

Fig.19)

(4) Take out the LED assembly from the front panel assembly.

AA

Fig.17

Z

Front panel assembly

Y

AA

FL boardCN881

ABAB

Fig.18

Craws i

Craws h

Fig.19

1-14 (No.MB351)

3.1.17 Removing the SW board

(See Figs.20 and 21)

• Prior to performing the following procedures, remove the metal

cover, front panel assembly and LED assembly.
(1) From the inside of the LED assembly, remove the four

screws AC attaching the stopper boards. (See Fig.20)
(2) Take out the stopper boards. (See Fig.20)
(3) Take out the SW board from the front panel assembly.

(See Fig.21)

LED assembly Stopper board

AC AC

Fig.20

LED assembly SW board

Fig.21

(No.MB351)1-15

3.2 DVD mechanism assembly section

• Prior to performing the following procedure "Removing the DVD mechanism assembly".

3.2.1 Removing the DVD cover
(See Fig.1)

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

move the two screws A attaching the DVD cover.

(2) Lift up the DVD cover upward, then remove it from the pro-

jections a of the DVD assembly.

(3) Move the DVD cover in the direction of the arrow, and re-

lease it from the joints b of the DVD assembly.

(4) Take out the DVD cover.

Projection a

A

Joint b

3.2.2 Removing the tray assembly
(See Figs.2 and 3)

• Prior to performing the following procedures, remove the DVD

cover.
(1) From the right side of the DVD mechanism assembly, push

the slide cam and pull the tray assembly out of the DVD
mechanism assembly in the direction of the arrow. (See
Fig.2)

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

move the two screws B attaching the tray assembly. (See
Fig.2)

(3) Remove the bushing of the tray assembly from the projec-

tions c on the DVD mechanism assembly, and take out the
tray assembly. (See Fig.3)

Projection a

A

DVD mechanism assembly

Fig.1

Tray assembly DVD mechanism assembly

Slide cam

Fig.2

Projection c

B

DVD cover

Projection

Bushing

c

Joint b

1-16 (No.MB351)

Tray assembly

DVD mechanism assembly

Fig.3

3.2.3 Removing the traverse mechanism assembly

(See Figs.4)

(1) From the bottom side of the DVD mechanism assembly, re-

move the four screws C attaching the traverse mechanism
assembly.

(2) Take out the DVD traverse mechanism assembly with the

DVD servo board.

DVD mechanism assembly

DVD servo board

3.2.4 Removing the DVD servo board

(See Figs.5 and 6)

• Prior to performing the following procedures, remove the

traverse mechanism assembly.
(1) From the side of the traverse mechanism assembly, solder

the short land sections d on the pickup. (See Fig.5)

(2) From the bottom side of the traverse mechanism assem-

bly, release the lock of the connector CN101
servo board in the direction of the arrow 1 and disconnect
the card wire. (See Fig.6)

Caution:

• Solder the short land sections d on the pickup before
disconnecting the card wire from the connector CN101
on the DVD servo board. If the card wire is disconnect­ed without attaching solder, the pickup may be de­stroyed by static electricity. (See Figs.5 and 6)

• When attaching the DVD servo board, be sure to re­move solders from the short land sections d after con­necting the card wire to the connector CN101
DVD servo board. (See Figs.5 and 6)

(3) Disconnect the card wire from the connector CN201

DVD servo board. (See Fig.6)

(4) Remove the two screws D attaching the DVD servo board.

(See Fig.6)

(5) Remove the DVD servo board from the projection e in the

direction upward and remove the claw g in the direction 3
while removing the claw f in the direction of the arrow 2.
(See Fig.6)

on the DVD

on the

on the

C

Traverse mechanism assembly

Short land section d

Traverse mechanism assembly

Card wire Card wire

Projection e

D

2

CN101

1

Fig.4

Fig.5

C

Pickup

CN201

1

3

D

Claw g

Claw f

DVD servo board

Traverse mechanism assembly

Fig.6

(No.MB351)1-17

3.2.5 Removing the pickup
(See Figs.5, 7 to 9)

• Prior to performing the following procedures, remove the

traverse mechanism assembly.
(1) From the side of the traverse mechanism assembly, solder

the short land sections d on the pickup. (See Fig.5)

(2) Release the lock of the connector on the pickup in the di-

rection of the arrow and disconnect the card wire. (See
Fig.7)

Caution:

• Solder the short land sections d on the pickup before
disconnecting the card wire from the connector on the
pickup. If the card wire is disconnected without attach­ing solder, the pickup may be destroyed by static elec­tricity. (See Figs.5 and 7)

• When attaching the pickup, be sure to remove solders
from the short land sections d after connecting the
card wire to the connector on the pickup. (See Figs.5
and 7)

(3) Remove the screw E attaching the plate and thrust spring.

(See Fig.7)

(4) Remove the joint h attaching the plate to the feed holder

and remove the plate with the thrust spring. (See Fig.7)

(5) Remove the shaft of the pickup from the section i on the

traverse mechanism assembly and remove the shaft from
the section j while moving it in the direction of the arrow.
(See Fig.8)

(6) Remove the pickup from the section k of the traverse

mechanism assembly and take out the pickup with the
shaft. (See fig.8)

(7) From the bottom side of the pickup, remove the two screws

F attaching the SW actuator and LEAD spring. (See Fig.9)

(8) Pull the shaft out of the pickup. (See Fig.9)

Plate

E

Feed holder

Section i

Joint h

Card wire

Shaft

Thrust spring

Connector

Pickup

Fig.7

Traverse mechanism assembly

Section j

1-18 (No.MB351)

Shaft

Pickup

Section k

Fig.8

Pickup

SW actuator

LEAD spring

F

Fig.9

3.2.6 Attaching the pickup
(See Figs.5, 7 to 10)

• See "3.2.5 Removing the pickup".

(1) Attach the shaft, SW actuator and LEAD spring to the pick-

up. (See Fig.9)

(2) Align the pickup to the section k of the traverse mechanism

assembly first, and set the both ends of the shaft of the
pickup in the sections i and j of the traverse mechanism as-

sembly. (See Fig.8)
(3) Attach the plate and thrust spring. (See Fig.7)
(4) Remove solders from the short land sections d after con-

necting the card wire to the connector on the pickup. (See

Figs.5 and 7)
(5) Turn the feed gear M in the direction of the arrow 1 to move

the pickup in the direction of the arrow 2. (See Fig.10)

Feed gear M

1

2

Pickup

Fig.10

(No.MB351)1-19

3.2.7 Removing the feed motor
(See Figs.11 to 13)

• Prior to performing the following procedures, remove the

traverse mechanism assembly.
(1) From the top side of the traverse mechanism assembly, re-

move the screw G attaching the plate and thrust spring.
(See Fig.11)

(2) Remove the joint m attaching the plate to the feed holder

and remove the plate with the thrust spring. (See Fig.11)

(3) Remove the wires from the soldered section n on the spin-

dle motor board. (See Fig.12)

Reference:

When attaching the feed motor, pass the wire through
the section p on the spindle base. (See Fig.12)

(4) Remove the feed holder, feed motor, lead screw, feed gear

E and feed gear M at the same time after removing the
three screws H attaching the feed holder. (See Fig.12)

(5) From the side of the feed holder, remove the two screws J

attaching the feed motor. (See Fig.13)

Feed gear M

Feed gear E

H

Lead screw

Feed motor

Wire Section p

Soldered
section n

3.2.8 Removing the spindle motor board
(See Figs.12 and 14)

• Prior to performing the following procedures, remove the

traverse mechanism assembly and DVD servo board.
(1) From the top side of the traverse mechanism assembly, re-

move the wires from the soldered section n on the spindle
motor board. (See Fig.12)

(2) From the bottom side of the traverse mechanism assem-

bly, remove the three screws K attaching the spindle motor
board. (See Fig.14)

Thrust spring

Joint m Traverse mechanism assembly

Plate

G

Feed holder

J

H

Spindle base

Spindle motor board

Fig.12

Feed holder

Fig.13

Traverse mechanism assembly

1-20 (No.MB351)

Fig.11

K

Fig.14

3.2.9 Removing the switch board

(See Fig.15)

(1) From the bottom side of the DVD mechanism assembly, re-

move the screw L attaching the SW board.

(2) Disconnect the card wire from the connector CN1

switch board.

(3) Remove the wires from the soldered section q on the

switch board.

(4) Lift the switch board while pressing the claw r of the DVD

mechanism assembly in the direction of the arrow and re­move it from the section s.

Reference:

• Put the wires on the section t after attaching the switch
board to the DVD mechanism assembly.

• Fix the claw r on the DVD mechanism assembly with bonds
after attaching the switch board.

3.2.10 Removing the motor
(See Figs.15 and 16)

• Prior to performing the following procedures, remove the DVD

cover and tray assembly.
(1) From the bottom side of the DVD mechanism assembly, re-

move the wires from the soldered section q on the switch
board. (See Fig.15)

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

move the belt from the motor pulley. (See Fig.16)

Note:

Take care not to attach grease on the belt.

(3) Remove the two screws M attaching the motor to the DVD

mechanism assembly and take out the motor from the bot­tom side of the DVD mechanism assembly. (See Fig.16)

Reference:

Put the wires on the section t after attaching the motor to
the DVD mechanism assembly. (See Fig.15)

on the

Switch board

Soldered
section q

CN1

Section s

Claw r

Wire

Section t

L

Fig.15

DVD mechanism assembly

Motor

DVD mechanism assembly

M

Belt

Motor pulley

Fig.16

(No.MB351)1-21

3.3 MD mechanism assembly section

• Prior to performing the following procedure "Removing the MD
mechanism assembly".

3.3.1 Removing the MD servo control board

(See Figs.1 and 2)

(1) From the bottom side of the main body, disconnect the card

wire from the connector CN408
board. (See Fig.1)

(2) Disconnect the flexible wire from the connector CN407

the MD servo control board. (See Fig.1)

(3) Remove the wires from the soldered section a on the MD

servo control board. (See Fig.1)

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

board. (See Fig.1)

(5) Move the MD servo control board in the direction of the ar-

row, and remove it from the joints b of the single frame.
(See Fig.1)

(6) From the inside of the main body, solder the short land sec-

tion on the flexible wire. (See Fig.2)

Caution:

• Solder the short land section on the flexible wire before
disconnecting the flexible wire from the connector

on the MD servo control board. If the flexible

CN310

wire is disconnected without attaching solder, the pick­up may be destroyed by static electricity. (See Fig.2)

• When attaching the MD servo control board, be sure to
remove the solders from the short land section after
connecting the flexible wire to the connector CN310
the MD servo control board. (See Fig.2)

(7) From the reverse side of the MD servo control board, dis-

connect the flexible wire from the connector CN310
move the MD servo control board. (See Fig.2)

on the MD servo control

on

on

and re-

MD servo control board

Soldered section a

AA

CN408

CN407

Joint b Joint b

Fig.1

MD servo control board

MD servo control board

CN310

Flexible wire

Short land section

Pickup

Fig.2

1-22 (No.MB351)

3.3.2 Removing the mechanism cover
(See Fig.3)

(1) From the both sides of the main body, remove the four

screws B attaching the mechanism cover.

(2) From the front side of the main body, release the front hook

of the mechanism cover from the joint c of internal loading
assembly.

(3) Move the mechanism cover toward the front, and take out

the mechanism cover in an upward direction.

Hook

Joint c

Joint c

B

Mechanism cover

B

Fig.3

(No.MB351)1-23

3.3.3 Removing the head lifter
(See Figs.4 to 6)

(1) Remove the head lifter spring from the hook d of the main

body. (See Fig.4)

Reference:

Remove the head lifter spring from the head lifter as re­quired.

(2) Move the head lifter in the direction of the arrow, and re-

lease the joints e. (See Fig.5)

(3) Remove the spring from the head lifter, and take out the

head lifter. (See Fig.6)

Head lifter

Head lifter spring

Hook d

Fig.4

Joint e

Spring

Head lifter

Head lifter

Fig.5

Spring

Fig.6

Joint

e

1-24 (No.MB351)

3.3.4 Removing the MD head assembly

(See Figs.7 and 8)

• Remove the MD servo control board.

(1) From the bottom side of the main body, remove the wire

from the H.wire holder 1 of the MD head assembly. (See
Fig.7)

(2) From the top side of the main body, remove the screw C at-

taching the MD head assembly. (See Fig.8)

(3) Take out the MD head assembly in the direction of the ar-

row. (See Fig.8)

Note:

• When attaching the wire, fix it to the H.wire holder 1 on the
bottom side of the pick up. (See Fig.7)

• After attaching the wire, confirm that the rest switch is
pressed by the pickup. (See Fig.7)

Rest switch

Pickup

WireH.wire holder 1

Fig.7

C

MD head assembly

Fig.8

(No.MB351)1-25

3.3.5 Removing the loading assembly, traverse mechanism assembly and single frame
(See Figs.9 and 10)

Reference:

The loading assembly, traverse mechanism assembly and sin­gle frame will be removable after removing the loading assem­bly from the main body.

• Remove the MD servo control board, mechanism cover, head

lifter and MD head assembly.
(1) From the top side of the main body, remove the three

screws D attaching the loading assembly. (See Fig.9)

(2) Move the loading assembly forward, and release the joint f

of it from the traverse mechanism assembly. (See Fig.9)

(3) Remove the loading assembly in an upward direction, and

take out the traverse mechanism assembly from the single
frame. (See Fig.10)

D

Loading assembly

Joint f

D

Fig.9

Loading assembly

Traverse mechanism assembly

1-26 (No.MB351)

Single frame

Fig.10

3.3.6 Removing the slide base L and slide base R

(See Fig.11)

• Remove the MD servo control board, mechanism cover, head

lifter and loading assembly.
(1) From the top side of the loading assembly, remove the two

screws E attaching the slide base L and slide base R.

(2) Release the slide base L from the joints g of the loading as-

sembly.

(3) Take out the slide base R.

Reference:

When attaching the slide base L, fix it to the joints g of the load­ing assembly.

Slide base R Joint g

E

Slide base L

3.3.7 Removing the loading mechanism assembly

(See Fig.12)

• Remove the MD servo control board, mechanism cover, head

lifter and loading assembly.
(1) From the top side of the loading assembly, release the

hook h of the loading mechanism base.

(2) While rifting the loading mechanism assembly, take out it.

Joint g

Fig.11

Hook

h

Loading mechanism base

Loading mechanism base assembly

Fig.12

E

(No.MB351)1-27

3.3.8 Removing the loading motor

r

r

(See Figs.13 and 14)

• Remove the MD servo control board, mechanism cover, head

lifter, loading assembly and loading mechanism assembly.
(1) From the top side of the loading mechanism assembly, dis-

connect the wire from the connector CN612

switch board. (See Fig.13)
(2) Remove the wire from the wire holder. (See Fig.13)
(3) Remove the screw F attaching the loading motor assem-

bly. (See Fig.13)
(4) Release the joint i from the loading motor assembly, and

take out the loading motor assembly. (See Fig.13)
(5) Remove the belt from the loading motor assembly. (See

Fig.14)
(6) Remove the two screws G attaching the loading motor, and

take out the loading motor. (See Fig.14)

3.3.9 Removing the cam gear and MD cam switch board
(See Fig.13)

• Remove the MD servo control board, mechanism cover, head

lifter, MD head assembly, loading assembly and loading mech­anism assembly.
(1) From the top side of the loading mechanism assembly, re-

move the slit washer attaching the cam gear.

(2) Pull out the cam gear from the loading mechanism assem-

bly.

(3) Remove the wire from the wire holder, and disconnect the

wire from the connector CN612
board.

(4) Remove the two screws H attaching the MD cam switch

board, and take out the MD cam switch board.

on the MD cam switch

on the MD cam

Loading motor assembly

Wire holder

Joint i

F

CN612

MD cam switch board

H

Slit washe

H

Cam gear

Fig.13

Loading moto

G

Belt

Fig.14

1-28 (No.MB351)

3.3.10 Removing the slide bar and cartridge holder assembly

(See Figs.15 and 16)

• Remove the MD servo control board, mechanism cover, head

lifter, MD head assembly, loading assembly and loading mech­anism assembly.
(1) From the top side of the loading assembly, remove the two

screws J attaching the slide bar to the cartridge holder as­sembly. (See Figs.15 and 16)

(2) Remove the slide bar in an upward direction, and take out

the cartridge holder assembly. (See Figs.15 and 16)

3.3.11 Removing the eject bar

(See Fig.15)

• Remove the MD servo control board, mechanism cover, head

lifter, MD head assembly, loading assembly, loading mecha­nism assembly and cartridge holder assembly.
(1) From the top side of the loading assembly, move the eject

bar in the direction of the arrow until it stops.

(2) From the bottom side of the main body, push the claw j of

the cartridge holder assembly.

(3) Take out the eject bar from the UD base.

J

J

Slide bar

Eject bar

Cartridge holder assembly

Eject bar

Eject bar

Claw j

Fig.15

J

Slide bar

UD base

Cartridge holder assembly

Fig.16

(No.MB351)1-29

3.3.12 Removing the insulators
(See Fig.17)

• Remove the MD servo control board, mechanism cover, head

lifter, MD head assembly and traverse mechanism assembly.
(1) From top side of the traverse mechanism assembly, re-

move the four insulators from the notches of the traverse
mechanism chassis.

(2) Take out the insulators.

Insulator

Pickup unit

3.3.13 Removing the pickup unit
(See Fig.18)

• Remove the MD servo control board, mechanism cover, head

lifter, MD head assembly, traverse mechanism assembly and
insulators.
(1) From the reverse side of the traverse mechanism assem-

bly, remove the screw K attaching the shaft holder F.

(2) Move the guide shaft in the direction of the arrow, and re-

move it from the shaft holder R.

(3) Move the guide shaft side of the pickup unit, and release

the joint k with the pickup guide.

(4) Take out the pickup unit with the guide shaft in the direction

of the arrow.

3.3.14 Removing the pickup
(See Fig.19)

• Remove the MD servo control board, mechanism cover, head

lifter, MD head assembly, traverse mechanism assembly, in­sulators and pickup unit.
(1) From the top side of the pickup unit, pull out the guide shaft

from the pickup.

(2) Remove the two screws L attaching the rack spring to the

pickup.

Caution:

• Solder the short land section on the flexible wire before dis­connecting the flexible wire from the pickup. If the flexible
wire is disconnected without attaching solder, the pickup
may be destroyed by static electricity.

• When attaching the pickup, be sure to remove the solders
from the short land section after connecting the flexible wire
to the pickup.

Insulator

Shaft holder F

Traverse mechanism chassis

Fig.17

k

K

Fig.18

Pickup guideJoint

Guide shaft

L

Rack spring

Pickup

Short land section

Pickup unit

Shaft holder R

1-30 (No.MB351)

Shaft

Fig.19

3.3.15 Removing the feed motor assembly
(See Figs.20 and 21)

• Remove the MD servo control board, mechanism cover, head

lifter, MD head assembly, traverse mechanism assembly and
insulators.

Reference:

Remove the pickup unit as required.
(1) From the reverse side of traverse mechanism assembly,

remove the wires (White/Black) of the feed motor assembly
from the soldered section m on the traverse mechanism
board. (See Fig.20)

(2) Remove the two screws M attaching the feed motor as-

sembly. (See Fig.20)

(3) Remove the two screws N attaching the feed motor to the

feed motor bracket. (See Fig.21)

(4) Take out the feed motor.

3.3.16 Removing the traverse mechanism board
(See Fig.20)

• Remove the MD servo control board, mechanism cover, head

lifter, MD head assembly, traverse mechanism assembly, in­sulators and feed motor assembly.
(1) From the reverse side of traverse mechanism assembly,

remove the wires (Red/Black) of the spindle motor from the
soldered section n on the traverse mechanism board.

(2) Remove the screw P attaching the traverse mechanism

board, and take out the traverse mechanism board.

Note:

• It is necessary to move pickup to outer a little with rest switch
to interfere if pickup is in the inner when attaching the
traverse mechanism board.

• Turn the screw shaft gear when moving pickup.

Soldered section n

Traverse mechanism board

P

Soldered

section m

Feed motor

assembly

M

Rest switch

Fig.20

Feed motor

Feed motor bracket

N

Pickup

Spindle motor

Screw shaft gear

Fig.21

(No.MB351)1-31

3.3.17 Reattaching the loading assembly
(See Figs.22 to 29)

(1) Reattach the eject bar to the UD base. (See Figs.22 and

23)

(2) Reattach the slide bar to the loading mechanism chassis

while fitting the boss p of the slide bar to the groove of the
eject bar. (See Fig.22)

(3) Move the slide bar and eject bar in the direction of the ar-

row, and reattach the cartridge holder assembly with the
two screws Q. (See Figs.22 and 23)

Note:

Make sure the section q of the eject lever is fitted to the
slot r of the eject bar at the bottom side of the loading
mechanism chassis after moving the eject lever and
loading slider of the cartridge holder assembly in the di­rection of the arrow. (See Figs.23 and 24)

(4) Reattach the wire holder to the UD base while passing the

hook s of the UD base through the slot t of the wire holder.
(See Fig.23)

Note:

The boss on the reverse side of the wire holder is fitted
to the round hole of the UD base.

(5) Reattach the MD cam switch board with the two screws R.

(See Fig.23)

(6) Turn the cam switch to align the boss to the triangle mark

on the MD cam switch board. (See Fig.25)

(7) Reattach the cam gear with a slit washer while aligning the

hole of it to the boss of the cam switch. (See Fig.25)

Note:

When reattaching the cam gear, the boss of the cam
switch should be aligned to the hole of it, and the triangle
mark of it should be aligned to the section u of the eject
bar. (See Fig.25)

(8) Reattach the loading motor assembly with the screw S.

(See Fig.25)

(9) Connect the wire of the loading motor to the connector

on the MD cam switch board. (See Fig.25)

CN612

(10) Hang the wire to the hook v of the UD base and fix it with

the wire holder. (See Fig.25)

(11) Reattach the four pins on the both sides of the UD base to

the notches of the loading mechanism base. (See Fig.26)

Note:

When reattaching the UD base, placing the section w of
the cartridge holder assembly under the hook x of the
loading mechanism base.

(12) Reattach the slide base R while aligning the two pins on an-

other side of the UD base to the slots of it. (See Figs.27 and

28)

Note:

Align the hook y of the slide base R to the section z on
the inward side of the cam gear rib. (See Figs.27 and 28)

(13) Reattach the slide base L on the slide base R while aligning

the two pins on another side of the UD base to the slots of
it. (See Fig.27)

(14) Reattach the slide base L with the two screws T, making

sure the two slots of it are fitted to the two bosses aa. (See
Figs.27 and 29)

Reference:

To expedite the work, lift the UD base slightly when fitting each
pin to the notches.

Q

Slide bar

Boss p

Eject bar

UD base

Cartridge holder assembly

Fig.22

1-32 (No.MB351)

Slide bar

Q

Wire holder Cam switch board

Slot t

Hook s

Triangle
mark

Cam switch boss

R

R

Triangle mark

Boss

Cam switch

Cam switch board

Q

Section q

Slot r

Slot rEject bar

Fig.23

UD base

Cartridge holder
assembly

Loading slider

Loading motor assembly

Hook v

CN612

Slide bar

S

Eject bar

Wire holder

Slit washer

Cam gear

Eject bar

Boss p

Fig.24

Triangle mark
of cam gear

Eject barSection u

Fig.25

(No.MB351)1-33

Hook x

Pin

Slide base R

Cam gear

Pin

Hook x

Pin

Section w

Section z

Loading mechanism base

Fig.26

Slide base R

Pin

Hook y

T

Slide base L

Hook y

Slide base R

Section z

Fig.28

Slide base L

Boss aa

T

Boss aa

Fig.29

1-34 (No.MB351)

Fig.27

4.1 DVD test mode

While pressing both the [STOP] key and
[DVD PLAY] key on the main unit, insert
the AC power cord in an outlet.

SECTION 4

ADJUSTMENT

FL indication

TEST bb#

Press the [MENU] key
on the remote control unit.

FL indication
(Ex.) " 4A49 "

When test mode starts, area suffix is displayed on FL indication.

TEST bb#

Initialization state
"3" : All initialization ending
"0" : Usually initialization ending
"Blank" : Initialization un-ending

Study state
"3" : DVD study un-completing, and CD study un-completing
"2" : DVD study completing, and CD study un-completing
"1" : DVD study un-completing, and CD study completing
"0" : DVD study completing, and CD study completing

Displaying region code
The study state and initialization state from a back end
are displayed on FL indication.

Displaying area suffix
Displaying area suffix is as follows.
JC / 1U / D / E / 2U / 3U / UB / UT / 4U / UY / EE / UF

The checksum of a device key is displayed on FL indication.
(4 byte)

Press the [MENU] key
on the remote control unit.

FL indication

S ## U$$$$

Press the [MENU] key
on the remote control unit.

FL indication

FL&LED become all lighting.

Press the [MENU] key
on the remote control unit.

Check mode starts.

1

The version of a system computer is displayed on FL indication.
: System computer version
## : ROM collection version
$$$$ : Unit version

FL indication and LED become all lighting.

(No.MB351)1-35

1

FL indication

CHECK

Press the [1] key
on the remote control unit.

Starting & disc reproduction
(from the started position)

Press the [4] key
on the remote control unit.

Displaying CD&LD lighting and laser current

Press the [5] key
on the remote control unit.

Displaying DVD&LD lighting and laser current

Press the [6] key
on the remote control unit.

DVD-SL x1 jitter measurement mode

Press the [9] key
on the remote control unit.

Displaying temperature sensor value (AD value)

Press the [10] key
on the remote control unit.

DVD-DL(Parallel, opposite) & DVD-SL
position search and jitter measurement

FL indication

CHECK

FL indication

FL indication

FL indication

FL indication

FL indication

Press the [MENU] key
on the remote control unit.

FL indication

TEST bb#

Press the [POWER] key
on the remote control unit.

Press the [STOP] key on the remote
control unit or main unit.

Stopping disk and LD-OFF

Press the [DVD EJECT] key
on the main unit.

Opening and closing of the tray

Press the [DVD PLAY] key on the remote
control unit or main unit.

Playing the disk

FL indication

CHECK

FL indication

CHECK

FL indication

1-36 (No.MB351)

DVD test mode

is finished.

4.2 Adjustment method for MD section

Note:

This set has an automatic adjustment function by test mode setting.
In addition, pay attention not to have initialized EEPROM of this set.

4.2.1 Adjustment method by a test mode

(1) Setting of TEST MODE 1

While pressing both the [EJECT] key and
[MD PLAY] key on the main unit, insert
the AC power cord in an outlet.

FL indication

TEST MODE

Press the [POWER] key on
the main unit after confirming
the FL indication.

(2) Adjustment of the laser power

TEST MODE 1

Insert the laser power
meter sensor.

FL indication

TEST MODE 1

Setting is complete.

Press the [4] key on the
remote controller.

Press the [2] key on the
remote controller.

Setting of playback laser power.

FL indication

L.POW PLAY

Increase the laser
power with the
[F.SKIP] key on the
remote controller.

FL indication

L.POW UP

Adjust the power to be 0.68 mW or
more. If the value exceeds 0.68 mW,
approximate it to 0.68 mW as
accurately as possible.

Press the [STOP] key
on the remote controller.

Decrease the laser
power with the
[B.SKIP] key on the
remote controller.

FL indication

L.POW DOWN

FL indication

STOP

Setting of record laser power.

FL indication
L.POW REC

Increase the laser
power with the
[F.SKIP] key on the
remote controller.

FL indication

L.POW UP

Adjust the power to be 6.23 mW or
less than 6.23mW. If the value exceeds

6.23 mW, approximate it to 6.23 mW as
accurately as possible.

Press the [STOP] key
on the remote controller.

Press the [MD EJECT] key on the
main unit and eject the laser power
meter sensor.

Decrease the laser
power with the
[B.SKIP] key on the
remote controller.

FL indication

L.POW DOWN

FL indication

STOP

Playback laser power
adjustment is complete.

Record laser power
adjustment is complete.

(No.MB351)1-37

(3) Adjustment of stray light offset

TEST MODE 1

Adjust the laser power.

Confirm that a disc is
not in a MD slot.

(4) Adjustment of the disc

TEST MODE 1

Adjust the laser power.

Adjust the stray light offset.

Insert the recordable disc
for the adjustment.
(Do not make a mistake in a disc)

Press the [MD PLAY] key
on the remote controller.

Press the [10] key on the
remote controller.

FL indication

TEST MODE1

Wait for 10 seconds.

Adjustment of stray light offset
is complete.

Insert the premastered disc
for the adjustment.
(Do not make a mistake in a disc)

Press the [+10] key on
the remote controller.

FL indication
ON TUNING

Automatic adjustment starts.

Adjustment OK?

YES

FL indication

OK TUNING

Press the [STOP] key on
the remote controller.

FL indication

TEST MODE 1

Press the [MD EJECT] key
on the main unit, take out
the recordable disc.

NO

FL indication

NG ERR

Refer to the judgment
table of NG error code.

FL indication
ON TUNING

Automatic adjustment starts.

Adjustment OK?

YES

FL indication
OK TUNING

Press the [STOP] key on
the remote controller.

FL indication

TEST MODE 1

Press the [MD EJECT] key
on the main unit, take out
the premastered disc.

Adjustment of the disc is complete.

NO

Refer to the judgment
table of NG error code.

FL indication

NG ERR

1-38 (No.MB351)

Judgment table of NG error code

Recordable

Disc

0
20
21
22
23
24
25
26
27
28
29
2A
2B

2C
2D
3E
3F

Premastered

Disc

0
30
32

­31
33
34
35
36
37
38
39
3A
3B
3C

­3F

Adjustment NG section

No error (normal)
Focus ON
Tracking error gain balance adjustment
Tracking error gain balance adjustment
Spindle constant voltage drive
Tracking ON
Spindle ADIP/EFM rough servo ON
Focal loop gain adjustment
Focal balance adjustment
Tracking error gain balance adjustment
Lens position servo sensitivity adjustment
Tracking ON
Spindle ADIP/EFM rough servo ON
Tracking loop gain adjustment
NRFDET slice level measurement
Pit Grv movement
Other processing

(5) Method of checking laser power

Set TEST MODE 1

FL indication

TEST MODE 1

Insert the laser power
meter sensor.

Press the [2] key on the
remote controller.

Present playback laser power is displayed
on laser power meter sensor.

Press the [4] key on the
remote controller.

Present record laser power is displayed
on laser power meter sensor.

Caution:
Because EEPROM of the main unit has
been updated when [STOP] key is pressed,
pay enough attention not to push it.

(No.MB351)1-39

(6) Setting of TEST MODE 2

Set TEST MODE 1

Press both the [MD EJECT]
key and [STOP] key on
the main unit.

(7) Displaying change value of a pickup adjustment

Set TEST MODE 2

FL indication

TEST MODE 2

Press the [6] key

on the remote control unit.
Laser power value
(with temperature compensation)

Press the [6] key

on the remote control unit.
AS gain adjustment value

Press the [6] key

on the remote control unit.
Tracking gain adjustment value

Press the [6] key

on the remote control unit.
Tracking balance adjustment value

Press the [6] key

on the remote control unit.
Focus balance adjustment value

FL indication

TEST MODE 2

Setting is complete.

FL indication
LPOW:

FL indication
ASGN:

FL indication
TGAN:

FL indication
TBAL:

FL indication
FBAL:

Press the [STOP] key on the remote
control unit or main unit.

FL indication

TEST MODE 2

Press the [POWER] key on the remote
control unit or main unit.

Press the [6] key

on the remote control unit.

Focus loop gain adjustment value

Press the [6] key
on the remote control unit.

Tracking loop gain adjustment value

Press the [6] key
on the remote control unit.

NRFDET slice level

Press the [6] key
on the remote control unit.

Lens position servo gain adjustment value

FL indication
FRGN:

FL indication
TRGN:

FL indication
NRFD:

FL indication
LPGN:

1-40 (No.MB351)

MD test mode

is finished

SECTION 5

TROUBLESHOOTING

5.1 Maintenance of laser pickup (MD)

1. Confirm the life of a laser diode

When the life of the laser diode has expired, the following
symptoms will appear.

(1) Recording will become impossible.
(2) The RF output (EFM output, amplitude of eye pattern)

will become lower.

(3) The drive current required for light emitting of laser diode

will be increased.

2. Confirm the service life according to the following flow

chart.

Is the

recording power

(5.8mV) output with the

laser power under

test mode?

YES

Is the drive current

of laser diode

120mA or less?

YES

OK.

3. Method of measuring the drive current of laser diode

When the voltage measured at R337(both end) on the MD
servo control board (ENX-0223) have become 120mV or over,
the service life of the laser diode is judged to have been
exhausted.

NO

Change the pickup

NO

Change the pickup

5.2 Replacement of laser pickup (MD)

Change the pickup by referring to "Removing
the pickup" in the Disassembly method.

Set the pickup to "TEST MODE" according
to the procedures described in the Adjustment
method.

Adjust the laser power.

Perform a disc adjustment.

Completion of changing the pickup.

Note:

Since this system is designed to perform magnetic recording,
the laser power ten times or over of the conventional MD play­er will be output. Therefore, be sure to perform not only adjust­ment and operation of this system so carefully as not to directly
look at the laser beam or touch on the body.

(No.MB351)1-41

Victor Company of Japan, Limited
AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

(No.MB351)

Printed in Japan

VPT