JVC EX-D1 User manual

SERVICE MANUAL
COPYRIGHT © 2005 Victor Company of Japan, Limited No.MB399
2005/6
COMPACT COMPONENT SYSTEM
MB39920056
EX-D1
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
CA-EXD1SP-EXD1 SP-EXD1
Area suffix
B ------------------------------ U.K.
E ---------- Continental Europe
EN ----------- Northern Europe
EV ------------- Eastern Europe
EE -------- Russian Federation

1-2 (No.MB399)
SPECIFICATION
Designs and Specifications are subject to change without notice.
General Power source AC 230 V , 50 Hz
Power consumption 25 W (in operation)
1.0 W (on standby)
Weight 3.0 kg
External dimensions (W ×H ×D) 150 mm ×152 mm ×246 mm
DVD player Playable discs DVD VIDEO, DVD AUDIO, VCD,
SVCD, CD, CD-R/RW (CD, VCD,
MP3, WMA, JPEG format), DVD-R/-RW (video format)
Video output Color system PAL
Horizontal resolution 500 lines
Composite ×1 1.0 V (p-p)/75 Ω, synchronization negative
S-video ×1 Y output: 1.0 V (p-p)/75 Ω, synchronization negative
C output: 0.3 V (p-p)/75 Ω
Component ×1 Y output: 1.0 V (p-p)/75 Ω, synchronization negative
PB/PR output: 0.7 V (p-p)/75 Ω
Audio output Analog sound output Speakers ×2 Output power (IEC 268-3): 36 W (18 W+18 W) at 4 Ω(10% THD)
Fitting impedance: 4 Ωto 16 Ω
Headphones ×1 11 mW/32 Ω
Fitting impedance: 16 Ωto 1 kΩ
Subwoofer ×1 500 mVrms/10 kΩ
Digital sound output Optical ×1 -21 dBm to -15 dBm
Audio input Sound input AUX ×1
400 mV/50 kΩ
USB AUDIO ×1
Tuner FM tuner Receiving frequency 87.50 MHz to 108.00 MHz
Antenna 75 Ω- Unbalanced type
AM (MW) tuner Receiving frequency 522 kHz to 1 629 kHz
Antenna External antenna jack (loop antenna)
Speaker Type Full range
1-way bass-reflex type
Magnetically shielded type
Speaker 8cm cone ×1
Frequency response 55 to 20 000 Hz
Power handling capacity 30 W
Impedance 4Ω
Sound pressure level 80 dB/W m
Dimension (W ×H ×D) 120 mm ×151 mm ×241 mm
Weight 1.8 kg each

(No.MB399)1-3
SECTION 1
PRECAUTION
1.1 Safety Precautions
(1) This design of this product contains special hardware and
many circuits and components specially for safety purpos-
es. For continued protection, no changes should be made
to the original design unless authorized in writing by the
manufacturer. Replacement parts must be identical to
those used in the original circuits. Services should be per-
formed by qualified personnel only.
(2) Alterations of the design or circuitry of the product should
not be made. Any design alterations of the product should
not be made. Any design alterations or additions will void
the manufacturers warranty and will further relieve the
manufacture of responsibility for personal injury or property
damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteris-
tics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by us-
ing replacement components rated for higher voltage, watt-
age, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Ser-
vice Manual. Electrical components having such features
are identified by shading on the schematics and by ( ) on
the Parts List in the Service Manual. The use of a substitute
replacement which does not have the same safety charac-
teristics as the recommended replacement parts shown in
the Parts List of Service Manual may create shock, fire, or
other hazards.
(4) The leads in the products are routed and dressed with ties,
clamps, tubings, barriers and the like to be separated from
live parts, high temperature parts, moving parts and/or
sharp edges for the prevention of electric shock and fire
hazard. When service is required, the original lead routing
and dress should be observed, and it should be confirmed
that they have been returned to normal, after reassem-
bling.
(5) Leakage shock hazard testing
After reassembling the product, always perform an isola-
tion check on the exposed metal parts of the product (an-
tenna terminals, knobs, metal cabinet, screw heads,
headphone jack, control shafts, etc.) to be sure the product
is safe to operate without danger of electrical shock.Do not
use a line isolation transformer during this check.
• Plug the AC line cord directly into the AC outlet. Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal parts of the cabinet, particular-
ly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage cur-
rent must not exceed 0.5mA AC (r.m.s.).
• Alternate check method
Plug the AC line cord directly into the AC outlet. Use an
AC voltmeter having, 1,000Ωper volt or more sensitivity
in the following manner. Connect a 1,500Ω10W resistor
paralleled by a 0.15µF AC-type capacitor between an ex-
posed 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

1-4 (No.MB399)
1.5 Safety Precautions (U.K only)
(1) This design of this product contains special hardware and many circuits and components specially for safety purposes. For con-
tinued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replace-
ment parts must be identical to those used in the original circuits.
(2) Any unauthorised design alterations or additions will void the manufacturer's guarantee; furthermore the manufacturer cannot
accept responsibility for personal injury or property damage resulting therefrom.
(3) Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must never
be replaced by parts other than those listed in the manual. Please note however that many electrical and mechanical parts in
the product have special safety related characteristics. These characteristics are often not evident from visual inspection. Parts
other than specified by the manufacturer may not have the same safety characteristics as the recommended replacement parts
shown in the Parts List of the Service Manual and 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 re-assembling.
1.5.1 Warning
(1) Service should be performed by qualified personnel only.
(2) This equipment has been designed and manufactured to meet international safety standards.
(3) It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
(4) Repairs must be made in accordance with the relevant safety standards.
(5) It is essential that safety critical components are replaced by approved parts.
(6) If mains voltage selector is provided, check setting for local voltage.
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.

(No.MB399)1-5
1.6 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.
1.6.1 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.
1.7 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.
1.8 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
Traverse mechanism assembly
Pickup
Short land section
Card wire
Connector

1-6 (No.MB399)
1.9 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 : 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)
!
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 : 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)
WARNING LABEL

(No.MB399)1-7
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-8 (No.MB399)
SECTION 3
DISASSEMBLY
3.1 Main body section
3.1.1 Removing the side panel L and side panel R
(See Figs.1 to 4)
(1) From the back side of the main body, remove the four
screws Aattaching the side panels L/R. (See Fig.1.)
(2) From the bottom side of the main body, remove the four
screws Battaching the side panels L/R. (See Fig.2.)
(3) From the both sides of the main body, release the joint ain
the direction of the arrow and remove the side panels L/R
toward this side. (See Figs.3 and 4.)
Fig.1
Fig.2
Fig.3
Fig.4
A A
Side panel R Side panel L
B
B
Side panel R
Side panel L
Side panel R
a
a
Side panel L a
a

(No.MB399)1-9
3.1.2 Removing the top panel assembly
(See Figs.5 to 6)
• Remove the side panels L/R.
(1) From the front side of the main body, pull out the volume
knob assembly in the direction of the arrow. (See Fig.5.)
(2) Remove the two screws Cand remove the volume orna-
ment. (See Fig.5.)
(3) From the both sides of the main body, remove the two
screws D, two screws Eand screw F. (See Figs.5 and 6)
Reference:
When attaching the screw F, attach the earth wire with it.
(See Fig.6.)
(4) From the back side of the main body, remove the screw G
attaching the top panel assembly. (See Fig.6.)
(5) From the both sides of the main body, release the joints b
and remove the joints cin the direction of the arrow. (See
Figs.5 and 6.)
(6) Disconnect the card wire from the connector CN427 on the
micom board while lifting the top panel assembly. (See
Fig.5.)
Fig.5
Fig.6
Top panel assembly
CN427
c
Micom board
Volume ornament
C
C
DEb
Volume knob assembly
Top panel assembly
c
D
E
b
Top panel assembly
G
F
Earth wire

1-10 (No.MB399)
3.1.3 Removing the front panel assembly
(See Figs.7 to 9)
• Remove the side panels L/R and top panel assembly.
(1) From the bottom side of the main body, remove the two
screws Hattaching the front panel assembly. (See Fig.7.)
(2) From the forward side of the micom board, disconnect the
card wire from the connector CN426. (See Fig.8.)
(3) Disconnect the wire from the connector CN501 on the mi-
com board. (See Fig.8.)
(4) From the right side of the main body, remove the screw J
and remove the earth wire. (See Fig.8.)
Reference:
• When attaching the screw J, attach the earth wire with
it. (See Fig.8.)
• After attaching the earth wire, fix it with the spacers as
before. (See Fig.8.)
(5) From the left side of the main body, remove the screw K
and remove the earth wire. (See Fig.9.)
Reference:
When attaching the screw K, attach the earth wire with
it. (See Fig.9.)
(6) From the bottom and both sides of the main body, release
the joints (d, e) of the front panel assembly and remove the
front panel assembly in the direction of the arrow. (See
Figs.7 to 9.)
Fig.7
Fig.8
Fig.9
Front panel assembly d
H
H
Front panel assembly CN426
CN501
e
Micom board
Earth wire
J
Spacers
Front panel assembly
e
KEarth wire

(No.MB399)1-11
3.1.4 Removing the tuner
(See Figs.10 and 11)
• Remove the side panels L/R and top panel assembly.
(1) From the back side of the main body, remove the two
screws Mattaching the tuner to the rear panel. (See
Fig.10.)
(2) Disconnect the card wire from the connector CN1 on the
tuner. (See Fig.11.)
Fig.10
Fig.11
M
M
Tuner
Tuner
CN1

1-12 (No.MB399)
3.1.5 Removing the rear panel
(See Fig.12)
• Remove the side panels L/R and top panel assembly.
(1) From the back side of the main body, remove the ten
screws Nand screw Pattaching the rear panel.
(2) From the top side of the main body, disconnect the earth
wire from the rear panel in the direction of the arrow.
(3) From the both sides of the main body, release the joints f
and remove the rear panel.
Fig.12
N
N
P
N
Rear panel
ff
Rear panel
Earth wire
N

(No.MB399)1-13
3.1.6 Removing the switching power supply
(See Figs.13 and 14)
• Remove the side panels L/R, top panel assembly and rear
panel.
(1) From the top side of the main body, disconnect the wire
from the connector CN200 on the regulator board. (See
Fig.13.)
(2) Take out the switching power supply in the direction of the
arrow. (See Fig.14.)
Fig.13
Fig.14
Regulator board
CN200
Switching power supply

1-14 (No.MB399)
3.1.7 Removing the digital amplifier board assembly
(See Figs.15 and 16)
• Remove the side panels L/R, top panel assembly, rear panel
and switching power supply.
(1) From the top side of the main body, remove the screw Q
attaching the digital amplifier board assembly. (See
Fig.15.)
(2) From the left side of the main body, disconnect the connec-
tors (CN310, CN311, CN312) on the digital amplifier board
assembly from the regulator board. (See Fig.16.)
(3) Release the joint gof the shield case B in the direction of
the arrow and take out the digital amplifier board assembly
from the main body. (See Fig.16.)
Fig.15
Fig.16
Digital amplifier board assembly
Q
Digital amplifier board assembly
Shield case B
CN312 CN311 CN310
Regulator board
g

(No.MB399)1-15
3.1.8 Removing the digital amplifier board
(See Figs.17 to 22)
• Remove the side panels L/R, top panel assembly, rear panel,
switching power supply and digital amplifier board assembly.
(1) From the forward side of the digital amplifier board assem-
bly, remove the screw R. (See Fig.17.)
(2) From the top and bottom sides of the digital amplifier board
assembly, remove the three screws S. (See Figs.18 and
19.)
(3) Release the joints (h, j, k, m) and remove the shield case
B with the heat sink in the direction of the arrow. (See
Figs.18 to 21.)
(4) From the forward side of the digital amplifier board, remove
the screw Sattaching the heat sink. (See Fig.22.)
(5) Remove the solders from the soldered sections (n, p) and
bend the sections (q, r) of the shield case A in the direction
of the arrow. (See Fig.22.)
(6) Take out the digital amplifier board from the shield case A.
Fig.17
Fig.18
Fig.19
Fig.20
Fig.21
Fig.22
Digital amplifier board assembly
R
Digital amplifier board assembly
hh
Heat sink
S
Shield case B
Digital amplifier board assembly
j
Heat sink
SS
Shield case B
k
Heat sink
Shield case B
m
Heat sink
Shield case B
Digital amplifier board
Shield case A
Heat sink
n
r
q
p
S

1-16 (No.MB399)
3.1.9 Removing the micom board
(See Fig.23)
• Remove the side panels L/R, top panel assembly and rear
panel.
(1) From the right side of the main body, remove the screw T
attaching the micom board.
Reference:
• When attaching the screw T, attach the earth wire with
it.
• After attaching the earth wire, fix it with the spacers as
before.
(2) Disconnect the card wire from the connector CN421 on the
forward side of the micom board.
Reference:
Remove the tuner as required. (See Figs.10 and 11.)
(3) Disconnect the card wire from the connector CN426 on the
forward side of the micom board.
(4) Disconnect the wire from the connector CN501 on the for-
ward side of the micom board.
(5) Disconnect the connectors (CN423, CN424, CN425) on
the micom board from the regulator and video boards to-
ward this side to remove the micom board.
Fig.23
3.1.10 Removing the regulator board
(See Fig.24)
• Remove the side panels L/R, top panel assembly, tuner, rear
panel, switching power supply, digital amplifier board assem-
bly and micom board.
(1) From the top side of the main body, disconnect the card
wires from the connectors (CN208, CN210) on the regula-
tor board.
Reference:
When connecting the card wire to the connector CN208,
pass it through the hole s of the regulator board as be-
fore.
(2) Remove the two screws Uand screw U'.
Reference:
When attaching the screw U', attach the wire holder with
it.
(3) Remove the screw V' to remove the earth wire and take out
the regulator board.
3.1.11 Removing the video board
(See Fig.24)
• Remove the side panels L/R, top panel assembly, tuner, rear
panel, switching power supply, digital amplifier board assem-
bly and micom board.
Reference:
Remove the regulator board as required.
(1) From the top side of the main body, remove the screws V
and screw V'.
Reference:
When attaching the screw V', attach the earth wire with
it.
(2) Take out the video board in the direction of the arrow.
(3) Disconnect the card wire from the connector CN703 on the
video board.
Fig.24
CN421
CN426 CN424
CN501
Micom board
Earth wire
Spacers
CN423 CN425
T
Regulator board
Video board
CN703
CN208
CN210
s
V
U
U'
V'
Earth wire
U
Wire holder

(No.MB399)1-17
3.1.12 Removing the DVD mechanism assembly
(See Figs.25 to 28)
• Remove the side panels L/R, top panel assembly, front panel
assembly, tuner, rear panel, switching power supply, digital
amplifier board assembly, micom board and regulator board.
(1) From the right side of the main body, remove the screw W
attaching the metal chassis. (See Fig.25.)
(2) From the top side of the main body, remove the two screws
Xand take out the metal chassis. (See Fig.26.)
Reference:
When attaching the metal chassis, pass the card wire
through the hole t on the metal chassis as before.
(3) Disconnect the card wire from the connector CN703 on the
video board. (See Fig.27.)
(4) Remove the screw Yand take out the DVD mechanism as-
sembly from the bottom chassis. (See Fig.27.)
Reference:
When the resolution of DVD mechanism assembly is done se-
quentially, remove a CD fitting in the direction of the arrow.
(See Fig.28.)
Fig.25
Fig.26
Fig.27
Fig.28
Metal chassis
W
Metal chassis
t
X
X
DVD mechanism assembly Video board
CN703
Bottom chassis
Y
DVD mechanism assembly
CD fitting

1-18 (No.MB399)
3.1.13 Removing the switch board
(See Fig.29)
• Remove the side panels L/R and top panel assembly.
From the inside of the top panel assembly, remove the three
screws Zand take out the switch board.
Fig.29
3.1.14 Removing the front board
(See Fig.30)
• Remove the side panels L/R, top panel and front panel assem-
blies.
(1) From the inside of the front panel assembly, disconnect the
card wire from the connector CN605 on the front board.
(2) Remove the five screws AA and take out the front board.
3.1.15 Removing the FL board
(See Fig.30)
• Remove the side panels L/R, top panel assembly, front panel
assembly and front board.
Remove the two screws AA and take out the FL board.
3.1.16 Removing the headphone and USB board
(See Fig.30)
• Remove the side panels L/R, top panel and front panel assem-
blies.
(1) Remove the four screws AA and take out the support
boards.
(2) Take out the headphone and USB board.
Reference:
After attaching the headphone and USB board, fix the wires
with the spacers as before.
Fig.30
Top panel assembly
Switch board
ZZ
Front board FL board
CN605
AA
AA
AA
AA AA
AA
Headphone and USB board
Support board
AA Support board
Spacer Spacer

(No.MB399)1-19
3.2 DVD mechanism section
• Remove the DVD mechanism assembly from the main body.
(See "Removing the DVD mechanism assembly".)
3.2.1 Removing the clamper base
(See Fig.1)
(1) From the top side of the DVD mechanism assembly, re-
move the two screws Aattaching the clamper base.
(2) Lift the clamper base in an upward direction to remove it
from the projections aof the DVD mechanism assembly.
(3) Slide the clamper base in the direction of the arrow and re-
move it from the joints b.
Fig.1
3.2.2 Removing the tray assembly
(See Fig.2)
(1) From the top side of the DVD mechanism assembly, re-
move the two screws Battaching the shaft guide of the tray
assembly.
(2) Remove the tray assembly from the projections cof the
DVD mechanism assembly and take out the tray assem-
bly.
Fig.2
A
A
Clamper base
DVD mechanism assembly
a
a
b
b
Tray assembly
DVD mechanism assembly
B
cc
Shaft guide

1-20 (No.MB399)
3.2.3 Removing the traverse mechanism assembly
(See Figs.3)
(1) From the bottom side of the DVD mechanism assembly, re-
move the four screws Cattaching the traverse mechanism
assembly.
(2) Take out the traverse mechanism assembly with the DVD
module board.
Fig.3
3.2.4 Removing the DVD module board
(See Figs.4 and 5)
• Remove the traverse mechanism assembly.
(1) From the side of the traverse mechanism assembly, solder
the short land sections don the pickup. (See Fig.4.)
(2) From the bottom side of the traverse mechanism assem-
bly, release the lock of the connector CN101 on the DVD
module board in the direction of the arrow 1 and disconnect
the card wire. (See Fig.5.)
Caution:
• Solder the short land sections don the pickup before
disconnecting the card wire from the connector CN101
on the DVD module board. If the card wire is discon-
nected without attaching solder, the pickup may be de-
stroyed by static electricity. (See Figs.4 and 5.)
• When attaching the DVD module 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 module board. (See Figs.4 and 5.)
(3) Disconnect the card wire from the connector CN201 on the
DVD module board. (See Fig.5.)
(4) Remove the two screws Dattaching the DVD module
board. (See Fig.5.)
(5) Remove the DVD module board from the projection ein an
upward direction and remove the engagement section gin
the direction 3 while removing the engagement section fin
the direction of the arrow 2. (See Fig.5.)
Fig.4
Fig.5
DVD mechanism assembly
Traverse mechanism assembly
DVD module board
CC
Traverse mechanism assembly
Pickup
d
Card wire Card wire
DVD module board
Traverse mechanism assembly
CN101 CN201
23
D
D
g
f
e
11