JVC NX-DV3 User manual

SERVICE MANUAL
COPYRIGHT © 2005 Victor Company of Japan, Limited No.MB351
2005/2
COMPACT COMPONENT MD SYSTEM
MB35120052NX-DV3
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
Area suffix
UB -------------------- Hong Kong
UJ --------------------- U.S.Military
(SP-NXDV3S)
(SP-NXDV3S)(SP-NXDV3S)
(SP-NXDV3S)
(CA-NXDV3)

1-2 (No.MB351)
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 ΩUnbalanced
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) SP 80 minutes
LP2 160 minutes
LP4 320 minutes
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)
1.3 W (on standby, display off)
Dimensions 260 mm (W) ×80 mm (H) ×358 mm (D)
Mass (approx.) 3.8 kg

(No.MB351)1-3
Speaker
*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.
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)

1-4 (No.MB351)
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, 1,000Ωper volt or more sensitivity
in the following manner. Connect a 1,500Ω10W resistor
paralleled by a 0.15µF AC-type capacitor between an
exposed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC
voltmeter.
Move the resistor connection to each exposed metal
part, particularly any exposed metal part having a return
path to the chassis, and measure the AC voltage across
the resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Voltage measured any must
not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5
mA AC (r.m.s.).
1.2 Warning
(1) This equipment has been designed and manufactured to
meet international safety standards.
(2) It is the legal responsibility of the repairer to ensure that
these safety standards are maintained.
(3) Repairs must be made in accordance with the relevant
safety standards.
(4) It is essential that safety critical components are replaced
by approved parts.
(5) If mains voltage selector is provided, check setting for local
voltage.
1.3 Caution
Burrs formed during molding may be left over on some parts
of the chassis.
Therefore, pay attention to such burrs in the case of 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.
(This regulation dose not Except the J and C version)
Good earth ground
Place this
probe on
each exposed
metal part.
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE

(No.MB351)1-5
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.
(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.
1M
Conductive material
(conductive sheet) or iron palate
(caption)
Anti-static wrist strap
Short land section Pickup
Card wireTraverse mechanism assembly

1-6 (No.MB351)
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.
REPRODUCTION AND POSITION OF LABELS
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)
VARO: Avattaessajasuojalukitus
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)
!
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
CLASS 1
LASER PRODUCT
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)
VARO: Avattaessajasuojalukitus
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)
WARNING LABEL

(No.MB351)1-7
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-8 (No.MB351)
SECTION 3
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 Aattaching the metal cover. (See Figs.1 and 2)
(2) From the back side of the main body, remove the two
screws Battaching the metal cover to the rear cover. (See
Fig.3)
(3) Take out the metal cover.
Fig.1
Fig.2
Fig.3
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 Cand screw Dattaching the rear panel.
(2) Release the two joints a, and take out the rear panel.
Fig.4
AMetal cove
r
A
Metal cover
Metal cover
B
C
CD
Joint aJoint aRear panel

(No.MB351)1-9
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 Eattaching the front panel assembly. (See Fig.6)
(3) Release the joints band cattaching the front panel assem-
bly. (See Fig.6)
(4) Take out the front panel assembly from the main body for-
ward.
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 Fattaching 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 Gattaching the micon board. (See Fig.7)
(2) From the top side of the main body, remove the four screws
Hattaching 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.
Fig.5
Fig.6
Fig.7
Front panel assembly
Tuner
Headphone board
Micon board
CN791
CN703
CN401
H
CN211
CN212
CN231
CN701
CN702
CN761
CN751
CN201
CN222
Earth wire
Ground point
CN221
H
H
H
Joint cJoint bJoint c
E
GF
Rear panel

1-10 (No.MB351)
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 Kattaching 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 pro-
jection dof the main body.
Fig.8
Main boardCN603
CN604
CN605
CN606
J
K
Projection d

(No.MB351)1-11
3.1.7 Removing the speaker terminal board
(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 Lat-
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
Mand two screws Nattaching the amplifier assembly. (See
Fig.9)
(2) Disconnect the parallel wire from the connector CN381 on
the speaker terminal board, and take out amplifier assem-
bly. (See Fig.9)
(3) From the bottom side of the amplifier assembly, remove
the rubber sheet. (See Fig.10)
(4) Remove the screw Pattaching 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.
Fig.9
Fig.10
Fig.11
Fig.12
Speaker terminal board
CN381
Amplifier assembly
Wire clamp
Earth wire
L
MN
N
M
Heat sink
P
Rubber sheet
Amplifier assembly
Joint eAmplifier board
Joint e
A
mplifier board

1-12 (No.MB351)
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 "Remov-
ing 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 Rat-
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. Fig.13
SW power unit Wire clamp
Fan wire Fan motor
Q
R

(No.MB351)1-13
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 Sattaching 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 Tattaching 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 Uattaching 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 Vattaching the MD bracket R to the
MD mechanism assembly. (See Fig.16)
Reference:
When attaching the MD mechanism assembly, align it with the
slot fand slot gof the main body. (See Fig.14)
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 Wattaching 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 Xattaching the headphone board to the
MD bracket R.
(2) Take out the headphone board.
Fig.14
Fig.15
Fig.16
Main boardCN291 CN603
CN604Holder board
DVD mechanism assembly
MD mechanism assembly
S
S
T
S
Slot f
Slot g
Holder board MD bracket L
W U
CN292
Headphone board MD bracket R
X V

1-14 (No.MB351)
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 Yattaching 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 Zattaching 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 as-
sembly. (See Fig.17)
(3) Release the claws hand claws iof the LED assembly. (See
Fig.19)
(4) Take out the LED assembly from the front panel assembly.
Fig.17
Fig.18
Fig.19
FL boardCN881
AA
Y
ABAB
AA
Z
Front panel assembly
Craws i
Craws h

(No.MB351)1-15
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)
Fig.20
Fig.21
LED assembly Stopper board
AC AC
LED assembly SW board

1-16 (No.MB351)
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 Aattaching the DVD cover.
(2) Lift up the DVD cover upward, then remove it from the pro-
jections aof the DVD assembly.
(3) Move the DVD cover in the direction of the arrow, and re-
lease it from the joints bof the DVD assembly.
(4) Take out the DVD cover.
Fig.1
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 Battaching the tray assembly. (See
Fig.2)
(3) Remove the bushing of the tray assembly from the projec-
tions con the DVD mechanism assembly, and take out the
tray assembly. (See Fig.3) Fig.2
Fig.3
A
A
DVD cover
DVD mechanism assembly
Projection a
Projection a
Joint b
Joint b
Tray assembly DVD mechanism assembly
Slide cam
Bushing
Projection c
Tray assembly
DVD mechanism assembly
Projection cB

(No.MB351)1-17
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 Cattaching the traverse mechanism
assembly.
(2) Take out the DVD traverse mechanism assembly with the
DVD servo board.
Fig.4
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 don the pickup. (See Fig.5)
(2) From the bottom side of the traverse mechanism assem-
bly, release the lock of the connector CN101 on the DVD
servo board in the direction of the arrow 1 and disconnect
the card wire. (See Fig.6)
Caution:
• Solder the short land sections don the pickup before
disconnecting the card wire from the connector CN101
on the DVD servo board. If the card wire is disconnect-
ed without attaching solder, the pickup may be de-
stroyed by static electricity. (See Figs.5 and 6)
• When attaching the DVD servo board, be sure to re-
move solders from the short land sections dafter con-
necting the card wire to the connector CN101 on the
DVD servo board. (See Figs.5 and 6)
(3) Disconnect the card wire from the connector CN201 on the
DVD servo board. (See Fig.6)
(4) Remove the two screws Dattaching the DVD servo board.
(See Fig.6)
(5) Remove the DVD servo board from the projection ein the
direction upward and remove the claw gin the direction 3
while removing the claw fin the direction of the arrow 2.
(See Fig.6)
Fig.5
Fig.6
DVD mechanism assembly
Traverse mechanism assembly
DVD servo board
CC
Traverse mechanism assembly
Pickup
Short land section d
Card wire Card wire
DVD servo board
Traverse mechanism assembly
CN101 CN201
11
23
D
D
Claw g
Claw f
Projection e

1-18 (No.MB351)
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 don 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 don the pickup before
disconnecting the card wire from the connector on the
pickup. If the card wire is disconnected without attach-
ing solder, the pickup may be destroyed by static elec-
tricity. (See Figs.5 and 7)
• When attaching the pickup, be sure to remove solders
from the short land sections dafter connecting the
card wire to the connector on the pickup. (See Figs.5
and 7)
(3) Remove the screw Eattaching the plate and thrust spring.
(See Fig.7)
(4) Remove the joint hattaching 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 ion the
traverse mechanism assembly and remove the shaft from
the section jwhile moving it in the direction of the arrow.
(See Fig.8)
(6) Remove the pickup from the section kof 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
Fattaching the SW actuator and LEAD spring. (See Fig.9)
(8) Pull the shaft out of the pickup. (See Fig.9)
Fig.7
Fig.8
Fig.9
Thrust spring
Pickup
Connector
Plate
Card wire
Feed holder
E
Joint h
Shaft
Pickup
Traverse mechanism assembly
Section iSection j
Section k
Pickup
SW actuator
LEAD spring
F
Shaft

(No.MB351)1-19
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 kof the traverse mechanism
assembly first, and set the both ends of the shaft of the
pickup in the sections iand jof 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 dafter 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)
Fig.10
Feed gear M
Pickup
1
2

1-20 (No.MB351)
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 Gattaching the plate and thrust spring.
(See Fig.11)
(2) Remove the joint mattaching 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 non the spin-
dle motor board. (See Fig.12)
Reference:
When attaching the feed motor, pass the wire through
the section pon 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 Hattaching 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)
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 non the spindle
motor board. (See Fig.12)
(2) From the bottom side of the traverse mechanism assem-
bly, remove the three screws Kattaching the spindle motor
board. (See Fig.14)
Fig.11
Fig.12
Fig.13
Fig.14
Thrust spring
Plate
G
Joint mTraverse mechanism assembly
Spindle motor board
Spindle base
Feed holder
Feed gear E
Feed gear M
Feed motor
Lead screw
Wire Section p
H
H
Soldered
section n
Feed holder
J
Traverse mechanism assembly
K