Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)
Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance)
Grounding SystemNegative ground
Allowable Operating Temperature0°C to +40°C (32°F to 104°F)
Dimensions (W × H × D)Installation Size (approx.)182 mm × 52 mm × 158 mm (7-3/16" × 2-1/16" × 6-1/4")
Panel Size (approx.)187 mm × 58 mm × 13 mm (7-3/8" × 2-5/16" × 9/16")
Mass (approx.)1.6 kg (3.6 lbs) (excluding accessories)
Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance)
Grounding SystemNegative ground
Allowable Operating Temperature0°C to +40°C
Dimensions (W × H × D)Installation Size (approx.)182 mm × 52 mm × 158 mm
Panel Size (approx.)188 mm × 58 mm × 11 mm
Mass (approx.)1.6 kg (excluding accessories)
MPEG-2: 24 kHz, 22.05 kHz, 16 kHz
GENERAL
Design and specifications are subject to change without notice.
1-8 (No.MA308)
1.1Safety Precautions
SECTION 1
PRECAUTION
!
!
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.
(No.MA308)1-9
1.2Preventing 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 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 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.
1.3Handling 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.
1.4Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the pickup unit.
• Apply solder to the short land before the card wire is disconnected from the connector on the pickup unit.
(If the card 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 after connecting the card wire.
[except KD-DVH426][for KD-DVH426]
Flexible wire
Flexible wire
1-10 (No.MA308)
CN101
Short-circuit points
Mechanism control board
CN101
Short-circuit points
Mechanism control board
1.5Important for laser products
1.CLASS 1 LASER PRODUCT
2.CAUTION :
(For U.S.A.) Visible and/or invisible class II laser radiation
when open. Do not stare into beam.
(Others) Visible and/or invisible class 1M laser radiation
when open. Do not view directly with optical instruments.
3.CAUTION : Visible and/or invisible laser radiation when
open and inter lock failed or defeated. Avoid direct
exposure to beam.
4.CAUTION : This laser product uses visible and/or 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 and PRINT
WARNING LABEL and PRINT
(No.MA308)1-11
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
1-12 (No.MA308)
3.1Main body
3.1.1 Removing the Bottom chassis
(See Fig.1)
(1) Disengage the five hooks a engaged bottom chassis.
SECTION 3
DISASSEMBLY
3.1.2 Removing the Heat sink
(See Fig.2)
(1) Remove the two screws A and three screws B attaching
the Heat sink.
a
a
a
a
a
Fig.1
A
3.1.3 Removing the Front chassis assembly
(See Fig.3)
(1) From the both side of Front chassis, remove the two
screws C attaching the Front chassis.
(2) Disengage the both side of four hooks b engaged Front
chassis.
B
Fig.2
b
C
b
Fig.3
(No.MA308)1-13
3.1.4 Removing the Main board assembly
(See Fig.4 and 5)
(1) Remove the three screws D attaching the Main board as-
sembly. (See Fig.4)
(2) Remove the three screws E attaching Rear bracket. (See
Fig.5)
(3) Disconnect the connector CN961
anism assembly. (See Fig.4)
connected to DVD mech-
CN961
D
D
Fig.4
E
Fig.5
1-14 (No.MA308)
3.1.5 Removing the DVD mechanism assembly
(See Fig.6 and 7)
(1) Remove the three screws F attaching the DVD mechanism
assembly. (See Fig.6)
(2) Remove the two screws G attaching the DVD bracket. (See
Fig.7)
F
F
Fig.6
3.1.6 Removing the Switch board assembly
(See Fig.8)
(1) Remove the Volume knob from Front panel assembly.
(2) Remove the five screws H attaching the Back cover.
(3) Disengage the fourteen hooks c engaged Back cover.
G
G
Fig.7
HH
cccc
cc
HHH
cc
Fig.8
(No.MA308)1-15
3.2DVD mechanism assembly (except KD-DVH426)
3.2.1 Removing the mechanism control 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
mechanism control board.
(3) Disconnect the card wire from connector CN201
mechanism control board.
(4) Disconnect the flexible wire from connector CN202
mechanism control board.
(5) Unsolder two soldered points a on the mechanism control
board and remove the wire extending from the feed motor.
(6) Remove the screw A attaching the lug wire.
(7) Remove the two screws B and screw C attaching the
mechanism control board.
Caution:
• As the flexible wire to be connected to CN101
attach it to the mechanism control 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
B
Short-circuit points
A
Lug wire
B
CN201
Feed motor
a
C
CN202
Mechanism control board
Fig.1
1-16 (No.MA308)
3.2.2 Removing the top cover
(See Fig.2)
(1) Remove the two screws D 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.
3.2.3 Removing the mechanism section
(See Fig.2 to 4)
• Remove the top cover.
(1) From the bottom of the body, remove the screw E attaching
the lug wire. (See Fig.2.)
(2) Remove the two screws F attaching the right and left stop-
pers on the front side. (See Fig.2.)
(3) Remove the two floating springs on the bottom of the body.
(See Fig.3.)
(4) Move the mechanism section upward and remove from the
chassis frame.
The three damper springs come off from the dampers.
(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 damper.
Floating spring
Fig.3
Mechanism section
Stopper
F
Top cover
Stopper
F
D
D
b
c
E
Lug wire
Damper SP.(F)
(Silver)
Damper (F)
(Black)
Damper SP.(F)
(Silver)
Damper (F)
(Black)
Fig.4
Damper SP.(R)
(Red)
Damper (R)
(Purple)
Chassis frame
Fig.2
(No.MA308)1-17
3.2.4 Removing the clamper unit
(See Fig.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.6.)
3.2.5 Reattaching the clamper unit
(See Fig.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.)
Caution:
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
Clamper2 spring
Chassis base assembly
Fig.6
Clamper spring
Clamper spring
f
Clamper2 spring
Chassis base assembly
g
d
Chassis base assembly
Fig.7
e
Fig.5
1-18 (No.MA308)
Clamper unit
Clamper unit
Clamper spring
Fig.8
Fig.9
g
Notch
(No.MA308)1-19
3.2.6 Removing the front unit
(See Fig.10 to 12)
• Remove the top cover and the mechanism section.
(1) Disconnect the flexible wire from connector CN202 on the
mechanism control board at the bottom of the body. (See
Fig.10.)
(2) Remove the screw G attaching the front unit on the top of
the body. (See Fig.11.)
(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 H 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.)
Mechanism control board
G
Front unit
h
Fig.11
CN202
Double tape
Fig.10
Flexible wire
Double tape
j
i
H
Switch board
Front unit
G
1-20 (No.MA308)
h
Fig.12
3.2.7 Removing the loading arm assembly
(See Fig.13 , 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
Side cam
assembly
p
m
k
Fig.13
Loading arm assembly
k
n
n
Connect arm
Fig.14
(No.MA308)1-21
3.2.8 Removing the rod (L)(R)/roller assembly
(See Fig.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. (See Fig.15.)
When reattaching the rod (L) and (R) to the loading arm assembly, engage each joint as shown in Fig.15. As joints q of
the rod (L), let the rod through q before reattaching it.
Collar
Collar
Rod(R)Rod(L)
q
q
q
Collar
Rod(L)
Rod(R)
q
Loading arm assembly
Fig.15
Roller assembly
Loading arm assembly
q
Rod(L)
q
Collar
Washer
Rod(R)
1-22 (No.MA308)
Fig.16
3.2.9 Removing the DVD pickup assembly
(See Fig.17 to 19)
• Remove the mechanism control 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 J 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 r. Move the lead
screw of the DVD pickup assembly in the direction of the
arrow to release from joint s. (See Fig.18.)
Caution:
• When releasing the lead screw at joint s, the L.S.collar
comes off at the end of the lead screw. When reassembling, reattach the L.S.collar to the lead screw and
engage joint s. (See Fig.18.)
• When reattaching the L.S.collar, reattach it to the point
s of the lead screw, and to the rod (M). Make sure that
the L.S.collar is set on the rod (M) spring. (See Fig.18.)
(4) Remove the screw K attaching the rack spring/ rack plate
on the DVD pickup. (See Fig.19.)
(5) Pull out the lead screw. (See Fig.19.)
Caution:
Perform adjustment after replacing the pickup.
DVD Pickup assembly
DVD Pickup assembly
Feed gear
J
Thrust spring
Fig.17
s
L.S.collar
Rod(M)
Lead screw
Sub shaft
L.S.collar
r
L.S.gear
Fig.18
K
Rack spring
Lead screw
Rack plate
DVD Pickup
Fig.19
(No.MA308)1-23
3.2.10 Removing the spindle motor
r
(See Fig.20)
• Remove the mechanism control board.
Remove the two screws L attaching the spindle motor on the
bottom of the body.
Caution:
Perform adjustment when reattaching the spindle motor.
3.2.11 Removing the feed motor assembly
(See Fig.21 and 22)
• Remove the mechanism control board.
(1) Remove the feed TRI. spring on the bottom of the body.
(See Fig.21.)
(2) Remove the two screws M attaching the feed motor as-
sembly. (See Fig.21.)
(3) Remove the slit washer from the motor H. assembly and
pull out the worm wheel. (See Fig.22.)
Remove the two screws N attaching the feed motor. (See
Fig.22.)
Spindle motor
Feed TRI. spring
L
Fig.20
M
Feed motor assembly
1-24 (No.MA308)
Fig.21
Slit washer
Worm wheel
Feed moto
N
Motor H. assembly
Fig.22
3.3DVD mechanism assembly (for KD-DVH426)
3.3.1 Removing the mechanism control 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
mechanism control board.
(3) Disconnect the card wire from connector CN201
mechanism control board.
(4) Disconnect the flexible wire from connector CN202
mechanism control board.
(5) Unsolder two soldered points a on the mechanism control
board and remove the wire extending from the feed motor.
(6) Remove the screw A attaching the lug wire.
(7) Remove the two screws B and screw C attaching the
mechanism control board.
Caution:
• As the flexible wire to be connected to CN101
attach it to the mechanism control 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
B
Short-circuit points
A
Lug wire
B
CN201
Feed motor
a
C
CN202
Mechanism control board
Fig.1
(No.MA308)1-25
3.3.2 Removing the top cover
(See Fig.2)
(1) Remove the two screws D 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.
3.3.3 Removing the mechanism section
(See Fig.2 to 4)
• Remove the top cover.
(1) From the bottom of the body, remove the screw E attaching
the lug wire. (See Fig.2.)
(2) Remove the two screws F attaching the right and left stop-
pers on the front side. (See Fig.2.)
(3) Remove the two floating springs on the bottom of the body.
(See Fig.3.)
(4) Move the mechanism section upward and remove from the
chassis frame.
The three damper springs come off from the dampers.
(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 damper.
Floating spring
Fig.3
Mechanism section
Stopper
F
Top cover
Stopper
F
D
D
b
c
E
Lug wire
Damper SP.(F)
(Silver)
Damper (F)
(Black)
Damper SP.(F)
(Silver)
Damper (F)
(Black)
Fig.4
Damper SP.(R)
(Red)
Damper (R)
(Purple)
Chassis frame
1-26 (No.MA308)
Fig.2
3.3.4 Removing the clamper unit
(See Fig.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.6.)
3.3.5 Reattaching the clamper unit
(See Fig.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.)
Caution:
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
Clamper2 spring
Chassis base assembly
Fig.6
Clamper spring
Clamper spring
f
Clamper2 spring
Chassis base assembly
g
d
Chassis base assembly
Fig.7
e
Fig.5
(No.MA308)1-27
Clamper unit
Clamper unit
Clamper spring
Fig.8
1-28 (No.MA308)
Fig.9
g
Notch
3.3.6 Removing the front unit
(See Fig.10 to 12)
• Remove the top cover and the mechanism section.
(1) Disconnect the flexible wire from connector CN202
mechanism control board at the bottom of the body. (See
Fig.10.)
(2) Remove the screw G attaching the front unit on the top of
the body. (See Fig.11.)
(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 H 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.)
Mechanism control board
on the
G
Front unit
h
Fig.11
CN202
Double tape
Fig.10
Flexible wire
Double tape
j
i
H
Switch board
Front unit
G
Fig.12
h
(No.MA308)1-29
3.3.7 Removing the loading arm assembly
(See Fig.13 , 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
Side cam
assembly
p
m
k
Fig.13
Loading arm assembly
k
n
n
Connect arm
1-30 (No.MA308)
Fig.14
3.3.8 Removing the rod (L)(R)/roller assembly
(See Fig.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. (See Fig.15.)
When reattaching the rod (L) and (R) to the loading arm assembly, engage each joint as shown in Fig.15. As joints q of
the rod (L), let the rod through q before reattaching it.
Collar
Collar
Rod(R)Rod(L)
q
q
q
Collar
Rod(L)
Rod(R)
q
Loading arm assembly
Fig.15
Roller assembly
Loading arm assembly
q
Rod(L)
q
Collar
Washer
Rod(R)
Fig.16
(No.MA308)1-31
3.3.9 Removing the DVD pickup assembly
(See Fig.17 to 19)
• Remove the mechanism control 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 J 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 r. Move the lead
screw of the DVD pickup assembly in the direction of the
arrow to release from joint s. (See Fig.18.)
Caution:
• When releasing the lead screw at joint s, the L.S.collar
comes off at the end of the lead screw. When reassembling, reattach the L.S.collar to the lead screw and
engage joint s. (See Fig.18.)
• When reattaching the L.S.collar, reattach it to the point
s of the lead screw, and to the rod (M). Make sure that
the L.S.collar is set on the rod (M) spring. (See Fig.18.)
(4) Remove the screw K attaching the rack spring/ rack plate
on the DVD pickup. (See Fig.19.)
(5) Pull out the lead screw. (See Fig.19.)
Caution:
Perform adjustment after replacing the pickup.
DVD Pickup assembly
DVD Pickup assembly
Feed gear
J
Thrust spring
Fig.17
s
L.S.collar
Rod(M)
Lead screw
Sub shaft
L.S.collar
r
L.S.gear
Fig.18
K
Rack spring
Lead screw
Rack plate
DVD Pickup
Fig.19
1-32 (No.MA308)
3.3.10 Removing the spindle motor
r
(See Fig.20)
• Remove the mechanism control board.
Remove the two screws L attaching the spindle motor on the
bottom of the body.
Caution:
Perform adjustment when reattaching the spindle motor.
3.3.11 Removing the feed motor assembly
(See Fig.21 and 22)
• Remove the mechanism control board.
(1) Remove the feed TRI. spring on the bottom of the body.
(See Fig.21.)
(2) Remove the two screws M attaching the feed motor as-
sembly. (See Fig.21.)
(3) Remove the slit washer from the motor H. assembly and
pull out the worm wheel. (See Fig.22.)
Remove the two screws N attaching the feed motor. (See
Fig.22.)
Spindle motor
Feed TRI. spring
L
Fig.20
M
Feed motor assembly
Fig.21
Slit washer
Worm wheel
Feed moto
N
Motor H. assembly
Fig.22
(No.MA308)1-33
SECTION 4
ADJUSTMENT
4.1Test instruments required for adjustment
(1) Digital oscilloscope (100MHz)
(2) Jitter meter
(3) Digital tester
(4) Electric voltmeter
(5) Tracking offset meter
(6) Test Disc : VT501 or VT502
(7) Extension studs : STDV001-3P
(8) Extension cable : EXTDV002-30P
4.3Connection method
Connection procedure
(1) Attach the front chassis assembly to the main board.
(2) Connect the front panel assembly to the main board.
(3) Attach the heat sink and rear bracket to the main board.
(4) Attach the extension studs to the DVD mechanism assembly.
(5) Connect the DVD mechanism assembly and the main board with a extension cable.
4.2Standard measuring conditions
Power supply voltage : DC14.4V(11V to 16V)
Load impedance : 4Ω(2 Speakers connection)
Line output : 20kΩ
Caution:
Be sure to attach the heat sink and rear bracket onto the power
amplifier IC and regulator IC respectively, before supply the
power.
If voltage is applied without attaching these parts, the power
amplifier IC and regulator IC will be destroyed by heat.
Extension cable
EXTDV002-30P
Heat sink
Rear bracket
Main board
Extension stud
STDV001-3P
Extension studs
STDV001-3P
1-34 (No.MA308)
4.4Adjustment method for jitter
After replacing the pickup, set the unit in the service mode to display a jitter value on the LCD.
Confirm that the jitter value measured with a jitter meter is within 12% of the jitter value displayed on the LCD.
If it is within 12%, then adjustment is not necessary.
If the measured jitter value is outside the 12% tolerance range, perform the following adjustments.
4.4.1 Adjustment procedure
(1) Set the unit to the service mode and display a jitter value (hex data) on the LCD.
(2) Turn each of the screws a, b and c, by a half-turn per step, in the direction that reduces the jitter value in order to minimize it.
(Do not turn a screw more than a half turn at a time, but adjust the screws in the cycle of the same level is turned in the pair of
b+c and the same level is turned in the pair of a+b.)
(3) After completing the adjustment, secure the screws with screw lock paint.
c
b
a
Jitter value adjustment procedure (Pickup horizontal level adjustment relative to the DVD recording surface)
(For the adjustment tool use a 3 mm wrench and not a screwdriver, this procedure will make the adjustment easier.)
3 mm wrench
(1) Set the unit to the service mode and display a jitter value (hex data) on the LCD.
(2) Turn each of the screws a, b and c, by a half-turn per step, in the direction that reduces the jitter value in order to minimize it.
(Do not turn a screw more than a half turn at a time, but adjust the screw in the cycle of same level turn by pair of b+c → pair of
a+b.)
(3) After completing the adjustment, secure the screws with screw lock paint.
(No.MA308)1-35
4.5Jitter value conversion table
Load the test DVD and set the unit to the service mode. A jitter value converted to the hex value is displayed on the LCD.
Refer to the corresponding decimal notation value shown in the following Jitter Conversion Table.
The adjustment is OK if the jitter value measured with a jitter meter is within 12% of the jitter value displayed on the LCD.
If the measured jitter value is outside the 12% tolerance range, adjust it to minimize the difference between the measured value and
the displayed value.
Keep this state more than 2 seconds while
continuing pressing the [SEL] button, [SOURCE]
button and [STANDBY/ON ATTENUATOR]
button sequentially.
The unit enters the service mode.
"INIT ALL" isInitialize all data to the factory setting
indicated on the LCD.
"VERSION" is Microcomputer version display
indicated on the LCD.
"AREA/RGN" is Destination area/region display
indicated on the LCD.
"VIDEO" is Setting of NTSC or PAL
indicated on the LCD.
"CLR ERR" is Clear loading/ejection error history
indicated on the LCD.
Press the [SEL] key
:The system control EEPROM is
initialized entirely.
Press the [SEL] key
S-XXX-YY System control CPU
version/ROM correction version
DVD-XXXXDVD version
*Exchanging it operate each indication with the
[DISC UP] button and [DISC DOWN] button.
Press the [SEL] key
STS-X XX System control destination
DVD-X XX DVD unit destination
DVDRGN X DVD unit region
*Exchanging it operate each indication with the
[DISC UP] button and [DISC DOWN] button.
Press the [SEL] key
"NTSC" or "PAL" are indicated on the LCD.
*Exchanging it operate each indication with the
[DISC UP] button and [DISC DOWN] button.
Note:
There is the model that is not equipped with
this mode by a version.
Press the [SEL] key
:The error history stored in the EEPROM is
cleared.
"CD ERROR" isRead loading and ejection error history
indicated on the LCD.
Error code (1 byte)
First byte[01] Eject error
AB
Press the [SEL] key
[02] Loading error
: The error history saved in the system control
is read and displayed.
TOT-xxxx : Total error count.
Total error count
(A figure between 0 and 9999 is
displayed. 10000 or more is also
Enyyzzzz: Latest three error code.
0nyyzzzz: First five error code
*Exchanging it operate each indication with the
[DISC UP] button and [DISC DOWN] button.
displayed as 9999.)
Detailed error code
Error code
Counter
Detailed error code
Error code
Counter
(No.MA308)1-37
AB
"DVD-TEMP" is
indicated on the LCD.
Detailed error code (2 bytes)
First byteHigher 4 bits Route NO. (Process of error occurrence)
Lower 4 bits Error type
. . . .
Refer to charts 1.1 and 1.2.
. . . .
*Displayed with loading/ejection error only.
[1] Time out
[2] Switch status error
[3] Swinging error
Second bytebit7
(Example) When a switch status error occurs during loading route 3 and
the switch status is L/L/H/H/H (00111B = 07H), the error code
. . . .
Disc type (0: 12 cm. 1: 8 cm)
bit6,5
bit4
bit3
bit2
bit1 SW 1 status
bit0 RESET SW status
Victor company of Japan, Limited
Mobile Entertainment Business Group Mobile Entertainment Category 10-1,1chome,Ohwatari-machi,Maebashi-city,Gumma-ken, 371-8543,Japan
(No.MA308)
Printed in Japan
VPT
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