JVC KDAV-7000, KDAV-7001, KDAV-7005, KDAV-7008, KVMAV-7001 Service manual
...
SERVICE MANUAL
DVD RECEIVER WITH MONITOR
MA10120051
KD-AV7000,KD-AV7001,
KD-AV7005,KD-AV7008,
KV-MAV7001,KV-MAV7002
KD-AV7000
Area suffix
J ------------- Northern America
KD-AV7001
Area suffix
E ------------- Southern Europe
EU ------------------------- Turkey
KD-AV7005
Area suffix
UN --------------------------Asean
U -------------------- Other Areas
KD-AV7008
Area suffix
A ------------------------ Australia
KV-MAV7001,KV-MAV7002
Area suffix
U -------------------- Other Areas
TABLE OF CONTENTS
1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-51
COPYRIGHT © 2005 Victor Company of Japan, Limited
No.MA101
2005/1
SPECIFICATION
Main unit
AUDIO AMPLIFIER SECTION
Maximum Power Output Front 50 W per channel
Rear 50 W per channel
Center 35 W
Continuous Power Output
(RMS)
Load Impedance 4 Ω (4 Ω to 8 Ω allowance)
Equalizer Control Range Frequencies 100 Hz, 300 Hz, 1 kHz, 3 kHz, 10 kHz
Frequency Response 40 Hz to 20 000 Hz
Signal-to-Noise Ratio 70 dB
Frequency Range FM 87.5 MHz to 107.9 MHz
FM Tuner Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)
AM Tuner Sensitivity 20 µV
LW Tuner Selectivity 50 µV (KV7001 only)
Signal Detection System Non-contact optical pickup (semiconductor laser)
Number of channels 2 channels (stereo)
Frequency Response DVD, fs=48 kHz 16 Hz to 22 000 Hz
Dynamic Range 96 dB
Signal-to-Noise Ratio 98 dB
Wow and Flutter Less than measurable limit
MP3 Recording Format MPEG 1/2 Audio Layer 3
Front 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than
0.8% total harmonic distortion.
Rear 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than
0.8% total harmonic distortion.
Center 15 W into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8% total
harmonic distortion.
Level ±10 dB
TUNER SECTION
AM 530 kHz to 1 710 kHz
50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω)
Alternate Channel Selectivity (400 kHz) 65 dB
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 35 dB
Capture Ratio 1.5 dB
Selectivity 35 dB
DVD/CD PLAYER SECTION
DVD, fs=96 kHz 16 Hz to 44 000 Hz
VCD, CD, MP3 16 Hz to 20 000 Hz
Max. Bit rate: 320 kbps
1-2 (No.MA101)
REMOVABLE MONITOR
Screen Size 7 inch wide liquid crystal display
Number of Pixel 336 960 pixels (480 vertical × 234 horizontal × 3)
Drive Method TFT (Thin Film Transistor) active matrix format
Color System NTSC
Aspect Ratio 16:9 (wide)
Allowable Storage Temperature -10°C to +60°C (14°F to 140°F)
Allowable Operating Temperature 0°C to +40°C (32°F to 104°F)
Dimensions (W × H × D) 170 mm × 141 mm × 15 mm (6-3/4 in. × 5-5/8 in. × 5/8 in.)
Mass 475 g (1.1 lbs)
GENERAL
Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)
Grounding System Negative ground
Allowable Operating Temperature 0°C to +40°C (32°F to 104°F)
Dimensions (W × H × D) Installation Size 182 mm × 52 mm × 165 mm (7-3/16 in. × 2-1/16 in. × 6-1/2 in.)
(With sleeve-mounting plate Type B (standard))
182 mm × 52 mm × 160 mm (7-3/16 in. × 2-1/16 in. × 6-5/16 in.)
(With sleeve-mounting plate Type A)
Panel Size 188 mm × 58 mm × 14 mm (7-7/16 in. × 2-5/16 in. × 5/8 in.)
Mass 2.25 kg (5.1 lbs) (including monitor)
Hideaway unit
Input Terminals AV INPUT 1/2 Audio: 0.5 Vrms (Left/Right)
Video (composite): 1 Vp-p/75 Ω
Output Terminals (Level/Impedance) AV OUTPUT Audio: 2.0 V/20 kΩ load (full scale)
Video (composite): 1 Vp-p/75 Ω
PRE OUT Audio: 2.0 V/20 kΩ load (full scale)
Other Terminals System integration (TO MAIN UNIT)
FM/AM antenna (FM/AM ANTENNA)
AV bus (AV BUS)
CD changer (TO CHANGER)
Rear view camera/Center speaker (BACKCAMERA REMOTE/CENTER
SPEAKER)
Power cord (POWER)
Dimensions (W × H × D) 230 mm × 35 mm × 181 mm (9-1/16 in. × 1-7/16 in. × 7-3/16 in.)
Mass 1.3 kg (2.9 lbs)
Design and specifications are subject to change without notice.
(No.MA101)1-3
1.1 Safety Precautions
SECTION 1
PRECAUTIONS
!
!
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.
Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.
1-4 (No.MA101)
1.2 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.
1.2.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(caption)
Anti-static wrist strap
1M
Conductive material
(conductive sheet) or iron plate
(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.
1.3 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) It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.4 Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the CD pickup unit.
• Apply solder to the short land before the flexible wire is disconnected from the connector on the CD pickup unit.
(If the flexible wire is disconnected without applying solder, the CD pickup may be destroyed by static electricity.)
• In the assembly, be sure to remove solder from the short land after connecting the flexible wire.
Flexible wire
Front end board
CN101
Short-circuit points
(No.MA101)1-5
1.5 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
CLASS 1
LASER PRODUCT
laser radiation when open and
interlock failed or defeated.
AVOID DIRECT EXPOSURE TO
BEAM. (e)
ADVARSEL : Synlig og usynlig
laserstråling når maskinen er
åben eller interlocken fejeler.
Undgå direkte eksponering til
stråling. (d)
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)
1-6 (No.MA101)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
(No.MA101)1-7
SECTION 3
DISASSEMBLY
3.1 Receiver unit section
3.1.1 Removing the display unit
(See Fig.1)
From the top side of the main body, pull the display unit out of the
main body in the direction of the arrow.
3.1.2 Removing the detach panel assembly
(See Fig.2)
From the front side of the main body, slide the detach button in
the direction of the arrow and remove the detach panel assembly.
Display unit
Fig.1
Detach button
Detach panel assembly
Fig.2
1-8 (No.MA101)
3.1.3 Removing the front panel assembly
(See Figs.3 to 5)
• Remove the display unit and detach panel assembly as re-
quired.
(1) From the both sides of the main body, remove the two
screw A attaching the front panel assembly. (See Figs.3
and 4)
(2) From the bottom side of the main body, remove the FPC
cover. (See Fig.5.)
(3) Release the lock of the connector CN75
and disconnect the card wire. (See Fig.5.)
(4) Release the joints a and remove the front panel assembly
from the main body in the direction of the arrow. (See
Fig.5.)
on the main board
Front panel assembly
A
Fig.3
Front panel assembly
Front panel assembly
a
Main board
A
Fig.4
Fig.5
Lock
FPC cover
a
CN75
(No.MA101)1-9
3.1.4 Removing the top drive unit
(See Figs.6 to 9)
• Prior to performing the following procedures, remove the dis-
play unit, detach panel assembly and front panel assembly.
(1) From the both sides of the main body, remove the four
screws B attaching the top drive unit. (See Figs.6 and 7.)
(2) From the rear side of the main body, remove the three
screws C attaching the top drive unit. (See Fig.8.)
(3) Remove the top drive unit from the main body and turn it
inside out. (See Fig.9.)
(4) Remove the two screws C attaching the F.P.C. guide on
the display drive unit. (See Fig.9.)
(5) Release the lock of the connector CN301
nism board and disconnect the flexible wire. (See Fig.9.)
(6) Remove the two screws D attaching the CN guide. (See
Fig.9.)
(7) Remove the three screws E attaching the PWB base. (See
Fig.9.)
(8) Remove the screw F attaching the connect board. (See
Fig.9.)
(9) Take out the connect board in the direction of the arrow.
(See Fig.9.)
(10) Release the lock of the connector CN391
board and disconnect the flexible wire. (See Fig.9.)
Top drive unit
on the mecha-
on the connect
B
Lock
Top drive unit
F.P.C.guide
Top drive unit
Fig.8
CN301
Motor board
Display drive unit
B
Fig.6
Top drive unit
Fig.7
B
C
D
E
CN guide
PWB base
Lock
C
E
F
CN391
Connect board
Fig.9
1-10 (No.MA101)
3.1.5 Removing the rear bracket
(See Figs.10)
• Prior to performing the following procedures, remove the dis-
play unit, detach panel assembly, front panel assembly and top
drive unit.
From the rear side of the main body, remove the five screws G
attaching the rear bracket.
3.1.6 Removing the DVD mechanism assembly
(See Figs.11 and 12)
• Prior to performing the following procedures, remove the dis-
play unit, detach panel assembly, front panel assembly and top
drive unit.
(1) From the top side of the main body, release the lock of the
connector CN52
and disconnect the flexible wire. (See Fig.11.)
(2) Remove the two screws H and screw J attaching the mech-
anism cover. (See Fig.11.)
(3) Release the lock of the connector CN101
board in an upward direction and disconnect the card wire.
(See Fig.12.)
Reference:
When connecting the card wire to the connector CN101
it through the lower part of the mechanism bracket. (See
Fig.12.)
on the main board in an upward direction
on the main
, pass
Rear bracket
G
Fig.10
Flexible wire
Mechanism cover
HH
CN52
DVD mechanism assembly
Main board
J
Fig.11
CN101
Fig.12
Main board
Mechanism bracket
(No.MA101)1-11
3.1.7 Removing the main board
(See Figs.13 and 14)
• Prior to performing the following procedures, remove the dis-
play unit, detach panel assembly, front panel assembly, top
drive unit and DVD mechanism assembly.
(1) From the rear side of the main body, remove the four
screws K attaching the rear bracket. (See Fig.13.)
(2) From the top side of the main body, remove the two screws
L attaching the mechanism bracket on the bottom chassis
assembly. (See Fig.14.)
(3) Remove the five screws M and two screws N attaching the
main board. (See Fig.14.)
(4) Take out the main board from the bottom chassis assem-
bly.
Reference:
When attaching the main board on the bottom chassis assembly, align the projections b of the bottom chassis assembly in
the hole of the main board. (See Fig.14.)
Rear bracket
b
Fig.13
MN
K
Main board
b
3.1.8 Removing the front board
(See Fig.15)
• Prior to performing the following procedures, remove the de-
tach panel assembly and front panel assembly.
(1) From the inside of the front panel assembly, remove the
three screws P and screw P' attaching the front board.
(2) Take out the lock lever assembly from the front panel as-
sembly.
(3) Bend the hooks c in the direction of the arrow.
(4) Release the front board from the sections d and take out
the front board from the front panel assembly.
Reference:
When attaching the screw P', attach the lock lever assembly
with it.
M
L
Mechanism bracket
Lock lever assembly
d
Front board
P'
N
Fig.14
c
c
b
Bottom chassis assembly
Front panel assembly
M
L
d
P
1-12 (No.MA101)
Fig.15
3.2 Top drive unit section
• Remove the top drive unit from the main body.
(See "3.1.4 Removing the top drive unit".)
3.2.1 Removing the display drive unit
(See Fig.1)
(1) From the both sides of the top drive unit, remove the two
screws A attaching the display guides L/R and remove the
display guides L/R from the top chassis assembly.
(2) Slide the display drive unit by manual operation in the di-
rection of the arrow and remove it from the top chassis assembly.
Display guide L
Display guide R
A
Display drive unit
A
Top chassis assembly
Fig.1
(No.MA101)1-13
3.2.2 Removing the drive gears and forth gear
(See Figs.2 to 4)
• Remove the display drive unit.
(1) From the both sides of the display drive unit, remove the
four screws B attaching the guide rails (L)/(R). (See Figs.2
and 3.)
(2) From the top side of the display drive unit, pull the drive
gears out of a drive gear shaft in the direction of the arrow
while holding the drive gear shaft. (See Fig.4.)
Reference:
Remove the drive gear shaft as required. (See Fig.4.)
(3) From the left side of the display drive unit, remove the
E.ring fixing the forth gear. (See Fig.4.)
(4) Remove the forth gear toward this side. (See Fig.4.)
Guide rail (L)
Display drive unit
B
Fig.2
Guide rail (R)
Display drive unit
B
Fig.3
E.ring
Forth gear
Drive gear Drive gearDrive gear shaft
Fig.4
Display drive unit
1-14 (No.MA101)
3.2.3 Removing the cover
(See Fig.5)
• Remove the display drive unit.
From the top side of the display drive unit, remove the two
screws C attaching the cover.
Display drive unitCover
C
Fig.5
(No.MA101)1-15
3.2.4 Removing the third gear, worm gear and double worm
(See Figs.6 to 11)
• Remove the display drive unit and cover.
(1) Remove the wire sheet with the wire from the motor. (See
Fig.6.)
Reference:
Disconnect the wire from the connector CN332
motor board as required.
(2) Disconnect the wire from the connector CN312
tor board. (See Fig.7.)
(3) Remove the two screws D attaching the motor bracket (S).
(See Fig.7.)
(4) Take out the motor bracket (S), worm guide, motor and
third gear together. (See Fig.7.)
(5) Pull the third gear out of the motor bracket (S) in the direc-
tion of the arrow. (See Fig.8.)
(6) Remove the two screws E attaching the motor and remove
the motor from the motor bracket (S). (See Fig.9.)
(7) Pull the worm gear out of the motor. (See Fig.10.)
Reference:
When inserting the warm gear in the shaft of the motor,
insert it by a measurement of a rule. (See Fig.10.)
(8) From the top side of the display drive unit, pull the double
worm in an upward direction. (See Fig.11.)
on the
on the mo-
Wire
Wire sheet Motor boardCN332 Motor
Fig.6
Worm guide Motor bracket (S)
D
Motor
D
Third gear Motor boardCN312
Third gear
Fig.7
Motor bracket (S)
Fig.8
1-16 (No.MA101)
E
Worm gear
Motor bracket (S)
Fig.9
Motor
16 ± 0.1 (mm)
Double worm
Fig.10
Display drive unit
Fig.11
(No.MA101)1-17
3.2.5 Removing the worm gear, motor bracket (A) and third worm
(See Figs.12 to 16)
• Remove the display drive unit and cover.
(1) Disconnect the wire from the connector CN311 on the mo-
tor board. (See Fig.12.)
(2) Remove the screw F attaching the motor bracket (A). (See
Fig.12.)
(3) Take out the motor bracket (A), worm guide and motor to-
gether. (See Fig.12.)
(4) Remove the two screws G attaching the motor and remove
the motor from the motor bracket (A). (See Fig.13.)
(5) Pull the worm gear out of the motor. (See Fig.14.)
Reference:
When inserting the warm gear in the shaft of the motor,
insert it by a measurement of a rule. (See Fig.14.)
(6) Remove the screw H attaching the worm guide to the motor
bracket (A). (See Fig.15.)
(7) From the top side of the display drive unit, pull the third
worm in an upward direction. (See Fig.16.)
Worm guideMotor bracket (A)
F
Motor
Motor
Fig.14
Motor bracket (A)
Worm gear
16 ± 0.1 (mm)
Worm guide
Motor board CN311
Fig.12
Motor bracket (A)
Motor
G
Fig.13
H
Fig.15
Display drive unit
Third worm
Fig.16
1-18 (No.MA101)
3.2.6 Removing the second wheel and R.L.S. gear
(See Figs.17 to 24)
• Remove the display drive unit and cover.
(1) Disconnect the wire from the connector CN311
tor board. (See Fig.17.)
(2) Remove the screw J attaching the motor bracket (A). (See
Fig.17.)
(3) Take out the motor bracket (A), worm guide and motor to-
gether. (See Fig.17.)
(4) Remove the two screws K attaching the gear bracket as-
sembly. (See Fig.18.)
(5) Take out the gear bracket assembly with other parts from
the display drive unit.
(6) From the left side of the gear bracket assembly, remove the
two screws L attaching the gear bracket cover. (See
Fig.19.)
(7) Pull out the joint gear in the direction of the arrow. (See
Fig.20.)
(8) Pull out the hex gear and second wheel together in the di-
rection of the arrow. (See Fig.20.)
(9) Pull the second wheel out of the hex gear. (See Fig.21.)
(10) Pull the third gear in an upward direction. (See Fig.22.)
(11) From the top side of the display drive unit, disconnect the
wire from the connector CN331
Fig 22.)
(12) Remove the screw M attaching the R.L.S. bracket. (See
Fig.22.)
(13) Take out the R.L.S. barcket with other parts from the dis-
play drive unit. (See Fig.22.)
Reference:
When attaching the R.L.S. bracket, pass the wire
through the sections a on the wire holder as before. (See
Fig.22.)
(14) From the back side of the R.L.S. bracket, remove the screw
N attaching the R.L.S. spring to the R.L.S. barcket and remove the R.L.S. spring in the direction of the arrow. (See
Fig.23.)
Reference:
When attaching the R.L.S. spring, hang the torsion
spring (R.L.S.) on the R.L.S. spring as before. (See
Fig.23.)
(15) From the front side of the R.L.S. bracket, remove the
R.L.S. gear toward this side. (See Fig.24.)
Reference:
When attaching the R.L.S. gear, attach the torsion spring
(R.L.S.) with it as before. (See Fig.24.)
on the motor board. (See
on the mo-
Motor
Motor board CN311
Fig.17
Display drive unit K
Gear bracket assembly
Fig.18
Gear bracket assembly
Gear bracket cover
K
Worm guideMotor bracket (A)
J
L
Fig.19
(No.MA101)1-19
Joint gear
Torsion spring (R.L.S.)
R.L.S. spring
Hex gearSecond wheel
Fig.20
Hex gear Second wheel
Fig.21
Display drive unit Third gear
R.L.S. spring
R.L.S. bracket
R.L.S. bracket
N
Fig.23
Torsion spring (R.L.S.)
R.L.S. gear
a
Motor board CN331 R.L.S. bracket
Fig.22
1-20 (No.MA101)
M
Fig.24
3.3 Display unit section
• Remove the display unit from the main body.
(See "3.1.1 Removing the display unit".)
3.3.1 Removing the display back panel
(See Figs.1 to 3)
(1) From the both sides of the display unit, remove the six
screws A attaching the display back panel. (See Figs.1 and
2.)
(2) From the rear side of the display unit, remove the three
screws A attaching the display rear cover. (See Fig.3.)
(3) Release the joints a first and relese the joint b. (See Fig.3.)
(4) Remove the display rear cover.
Note:
When releasing the joints a and joints b, take care not to
break the claws of the display rear cover. (See Fig.3.)
(5) Remove the four screws B attaching the display back pan-
el. (See Fig.3.)
(6) Take out the display back panel from the display unit.
Display back panel
A
Fig.1
Display back panel
A
Fig.2
a
a
A
A
a
b
A
a
BB
Display rear cover
Display back panel
Fig.3
(No.MA101)1-21
3.3.2 Removing the switch board
(See Fig.4)
• Removing the switch board (See Fig.4)
(1) Release the lock of the connector CN402 on the display
board in the direction of the arrow and disconnect the card
wire.
Reference:
After connecting the card wire, fix it with the spacer(H) as
before.
(2) Take out the switch board from the display unit.
3.3.3 Removing the display board
(See Fig.4)
• Prior to performing the following procedures, remove the dis-
play back panel.
Reference:
Remove the switch board as required.
(1) Release the lock of the connector CN402
board in the direction of the arrow and disconnect the card
wire.
(2) Release the locks of the connectors (CN421
the display board in the direction of the arrow and disconnect the flexible wire.
(3) Disconnect the wire from the connector CN471
play board.
(4) Bend the hooks c in the direction of the arrow.
(5) Remove the two screws C attaching the slider assembly.
(6) Remove the tension spring from the section d and remove
the slider assembly in the direction of the arrow 1.
(7) Remove the three screws D attaching the display board
and take out the display board from the display unit.
Reference:
After connecting the each wire, fix them with the spacer(H) as
before.
on the display
, CN451) on
on the dis-
CN451
CN421
D
c
1
Slider assembly
Display board
Spacer(H)
CN402
Spacer(H)
C
D
Slider assembly
Fig.4
Switch board
Spacer(H)
c
CN471
C
D
Tension spring
d
3.3.4 Removing the LCD module
(See Fig.5)
• Prior to performing the following procedures, remove the dis-
play back panel and display board.
Release the claws e in the direction of the arrow and take out
the LCD module from the display panel.
e
e
Display panel
LCD module
e
e
Fig.5
1-22 (No.MA101)
3.4 DVD mechanism assembly section
3.4.1 Removing the front end board
(See Fig.1)
Caution:
Before disconnecting the flexible wire extending from the DVD
pickup, solder the short-circuit point on the flexible wire using
a grounding soldering iron.
If you do not follow this instruction, the DVD pickup may be
damaged.
(1) Turn over the body, and solder the short-circuit points on
the flexible wire extending from the DVD pickup.
(2) Disconnect the flexible wire from connector CN101
front end board.
(3) Disconnect the card wire from connector CN201
front end board.
(4) Disconnect the flexible wire from connector CN202
front end board.
(5) Unsolder two soldered points a on the front end board and
remove the wire extending from the feed motor.
(6) Remove the two screws A and screw B attaching the front
end board.
Caution:
• As the flexible wire to be connected to CN101
attach it to the front end board using a double tape.
• After reassembling, unsolder the short-circuit points.
on the
on the
on the
, make sure to
Flexible wire
Double tape
CN101
A
Short-circuit points
DVD mechanism assembly
A
Card wire
Feed motor
CN201
CN202
a
B
Front end board
Fig.1
(No.MA101)1-23
3.4.2 Removing the top cover
(See Fig.2)
(1) Remove the two screws C attaching the top cover on the
back of the body.
(2) Remove the top cover upward.
Reference:
When reassembling, set part b of the top cover under the
bending part c of the chassis frame.
3.4.3 Removing the mechanism section
(See Figs.2 to 4)
• Remove the top cover.
(1) Remove the two screws D attaching the right and left stop-
pers on the front side. (See Fig.2.)
(2) Remove the two floating springs on the bottom of the body.
(See Fig.3.)
(3) Move the mechanism section upward and remove from the
chassis frame.
(4) The three damper springs (damper SP. (F) and damper
SP. (R)) come off from the dampers (damper(F) and damper (R)). (See Fig.4.)
Caution:
• When reassembling, reattach the damper spring to the
damper respectively and insert the three shafts on the bottom of the mechanism to the dampers.
• Before inserting the shaft to the dampers, apply IPA to the
hole of the dampers.
Floating spring
Fig.3
Mechanism section
Top cover
DVD mechanism assembly
Stopper
D
Stopper
D
Fig.2
C
c
Chassis frame
Damper SP. (F)
(Silver)
C
b
Damper (F)
(Black)
Damper SP. (F)
(Silver)
Damper (F)
(Black)
Fig.4
Damper SP. (R)
(Red)
Damper (R)
(Purple)
Chassis frame
1-24 (No.MA101)
3.4.4 Removing the clamper unit
(See Figs.5 to 7)
• Remove the top cover and the mechanism section.
(1) Remove the clamper2 spring on the bottom of the mecha-
nism section. (See Figs.5.and 6.)
(2) Release the part d of the clamper spring from the bending
part of the chassis base assembly. (See Fig.7.)
(3) Move the clamper unit in the direction of the arrow and turn.
Release the two joints e and f, then remove the clamper
unit upward. (See Fig.5.)
Clamper unit
g
Clamper spring
Clamper spring
Chassis base assembly
d
Fig.7
f
Clamper2 spring
Chassis base assembly
Clamper2 spring
e
Fig.5
Chassis base assembly
Clamper unit
Fig.6
(No.MA101)1-25
3.4.5 Reattaching the clamper unit
(See Figs.5 to 9)
(1) Attach the clamper spring to the clamper unit. (See Fig.8.)
(2) Move the clamper unit to set the side joints e and f to each
boss of the chassis base assembly. Make sure that part g
is inserted to the notch of the chassis base assembly. (See
Figs.5 and 9.)
(3) Move the part d of the clamper spring to the outside of the
bending part of the chassis base assembly. (See Fig.7.)
(4) Attach the clamper2 spring to the chassis base assembly.
(See Figs.5 and 6.)
Reference:
When reattaching, temporarily hook the end of the clamper
spring as shown in the figure to make the work easy. (See
Fig.8.)
Clamper unit
Clamper spring
Clamper unit
Fig.8
Fig.9
g
Notch
1-26 (No.MA101)
3.4.6 Removing the front unit
(See Figs.10 to 12)
• Remove the top cover and the mechanism section.
(1) Disconnect the flexible wire from connector CN202
front end board at the bottom of the body. (See Fig.10.)
(2) Remove the screw E attaching the front unit on the top of
the body. (See Figs.11 and 12.)
(3) Move the front unit toward the front to release joint h, and
release two joints i and j on the right side of the chassis
base assembly. Then remove the front unit upward. (See
Figs.11 and 12.)
(4) Remove the two screws F attaching the switch board. (See
Fig.12.)
Reference:
You can remove the switch board only without removing the
front unit.
Caution:
When reassembling, attach the flexible wire extending from
the switch board using the double tape. (See Figs.10 and 12.)
Front end board
on the
E
Front unit
h
Fig.11
CN202
Double tape
Fig.10
Flexible wire
Double tape
j
i
F
Switch board
Front unit
E
Chassis base assembly
Fig.12
h
(No.MA101)1-27
3.4.7 Removing the loading arm assembly.
(See Figs.13 and 14)
• Remove the top cover, the mechanism section and the front
unit.
(1) From the top of the body, move the loading arm assembly.
from the front side upward, and release the bosses from
the right and left joints k and m of the chassis base assembly.
(2) Release the boss from notch n of the connect arm on the
right side of the body, and release the boss from notch p of
the slide cam assembly on the left side.
m
Loading arm assembly
Slide cam
assembly
p
m
Fig.13
Loading arm assembly
k
Chassis base assembly
k
n
n
Connect arm
1-28 (No.MA101)
Fig.14
3.4.8 Removing the rod (L)(R)/roller assembly
(See Figs.15 and 16)
• Remove the top cover, the mechanism section, the front unit
and the loading arm assembly.
(1) Release the rod (L) and (R) from the joints q at the bottom
of the loading arm assembly. (See Fig.15.)
(2) Remove the roller assembly from the loading arm assem-
bly. (See Fig.16.)
(3) Remove the two collars and washer from the roller assem-
bly. (See Fig.16.)
Caution:
After attaching the loading arm assembly to the roller assembly, attach the rod (L) and (R). Attach the rods to the right and
left collars of the roller assembly. (See Figs.15.)
When reattaching the rod (L) and (R) to the loading arm assembly, engage each joints q as shown in Fig.15. As joints r
of the rod (L), let the rod through r before reattaching it.
Collar
Collar
Roller assembly
Rod(R) Rod(L)
q
q
Collar
Rod(L)
Rod(R)
Loading arm assembly
q
Fig.15
Roller assembly
q
r
Rod(L)
q
Collar
Washer
Rod(R)
Loading arm assembly
Fig.16
(No.MA101)1-29
3.4.9 Removing the DVD pickup
(See Figs.17 to 19)
• Remove the front end board.
(1) From the bottom of the body, turn the feed gear in the di-
rection of the arrow to move the DVD pickup outwards.
(See Fig.17.)
(2) Remove the screw G attaching the thrust spring. (See
Fig.17.)
(3) Remove the DVD pickup assembly upward on the L.S.
gear side and release from sub shaft at joint s. Move the
lead screw of the DVD pickup assembly in the direction of
the arrow to release from joint t. (See Fig.18.)
(4) Remove the screw H attaching the rack spring/ rack plate
on the DVD pickup. (See Fig.19.)
(5) Pull out the lead screw. (See Fig.19.)
Caution:
• When releasing the lead screw, the L.S. collar comes off at
the end of the lead screw. When reassembling, reattach the
L.S. collar to the lead screw. (See Fig.19.)
• After reattaching the L.S. collar, reattach it to the point t of
the lead screw, and to the holder (M). Make sure that the
L.S. collar is set on the lod (M). (See Fig.18.)
• Perform adjustment after replacing the pickup.
Sub shaft
Holder(M)
s
t
L.S. collar
Lod(M)
Lead screw
L.S. gear
DVD mechanism assembly
Feed gear
Thrust spring
DVD pickup assembly
Fig.17
DVD pickup assembly
Fig.18
H
Rack spring
Lead screw
Rack plate
G
L.S. collar
DVD pickup
Fig.19
1-30 (No.MA101)
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