Kenwood DV-303 Manuel utilisateur
DVD VCD CD PLAYER
DV-303
SERVICE MANUAL
© 1999-8/B51-5561-00 (K/K) 1378
70%
In compliance with Federal Regulations, following are repro-
ductions of labels on, or inside the product relating to laser
product safety.
KENWOOD-Crop. certifies this equipment conforms to DHHS
Regulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock
defeated.
AVOID DIRECT EXPOSURE TO BEAM
Caution : No connection of ground line if disassemble
the unit. Please connect the ground line on
rear panel, PCBs, Chassis and some others.
NOTE : Please use the remote controller
for self-diagnosis and tilt adjust-
ment.
STANDBY VIRTUAL
SURROUND
OPEN/CLOSE
DIGITAL OUTPUT
(PCM/BIT STREAM)
OPTICAL COAXIAL
AUDIO OUTPUT VIDEO OUTPUT
VIDEO OUTPUT
SELECTION
COMPONENT
VIDEO OUTPUT
Cr
Cb Y
S-VIDEO
AC IN~
L
R
Operation button
(K27-2390-08)
Front panel
(A60-1788-08)
Tray top
(A29-1088-08)
KENWOOD badge
(B43-0302-04)
Top cover
(A01-3749-08)
Leg
(J02-1468-08)
Pin jack
(E63-1135-08)
Oscillating module
(TOTX178A) Y/C connector
(E40-8534-08)
RCA jack
(E63-1134-08)
Front cover
(B10-3573-08)
Power button
(K27-2389-08)
Switch
(S90-0134-08)
Connector
(E40-8535-08)
Pin jack
(E63-1133-08)
DV-303
2
CONTENTS / ACCESSORIES
CONTENTS / ACCESSORIES .................................. 2
DISASSEMBLY FOR REPAIR....................................3
BLOCK DIAGRAM....................................................14
CIRCUIT DESCRIPTION..........................................18
ADJUSTMENT..........................................................22
WIRING DIAGRAM...................................................33
PC BOARD .............................................................. 34
SCHEMATIC DIAGRAM.......................................... 39
EXPLODED VIEW ....................................................61
PARTS LIST..............................................................64
SPECIFICATIONS ......................................Back cover
Contents
(A70-1353-08) (E30-2937-08)
(E30-2938-08) (E30-2365-05)
Accessories
Note: There is different part in this manual as compared with a usual one because we use OEM
factory's data.
DV-303
3
DISASSEMBLY FOR REPAIR
1-1 Casing Parts and C.B.A. Positions
1. Assembling and Disassembling the Casing
and Checking C.B.A.s 1-4 Disassembling the Front Panel
1. Release the 3 tabs on the bottom.
2. Release the 2 tabs on the left and right.
3. Release the 2 tabs.
4. Disconnect the 2 flexible cables.
1-5 Disassembling the Loading Base Unit
1. Remove the 4 screws.
2. Pull out the loading base unit vertically.
Note
There is a danger of damaging the connectors.
1-2 Service Positions
Note
To inspect the loading base unit, position the left side
upward (as viewed from the front).
1-3 Disassembling the Tray
1. Turn the lever clockwise.
2. Move the tray in the direction of the arrow until it locks.
3. Release the tab locks on the left and right, then pull out
the tray.
Extension cable (A)
Extension cable (B)x2
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DISASSEMBLY FOR REPAIR
1-6 Checking the Module C.B.A.
1. Remove the 2 screws.
2. Connect the module C.B.A. to the mother C.B.A. with the
extension cables for inspection.
• Extension cable (B)x2
Mother C.B.A. Module C.B.A.
PP24201-PS4201
PP23201-PS3201
Note
Be sure to initialize the player whenever you replace a
C.B.A. (Refer to page21/4-1 Initializing the DVD Player.)
1-7 Disassembling the Rear Panel,
1. Remove all of the screws connected to the rear panel.
(The number of screws varies according to the model).
1-8 Checking the Power Supply C.B.A.
1. Remove the 3 screws.
2. Carefully pull out the power supply C.B.A.
Note
There is a danger of damaging the connectors.
3. Connect the power supply C.B.A. and the mother C.B.A.
with the extension cable for inspection.
• Extension cable(A) (connects the power supply C.B.A.
PS1101 and the mother C.B.A. PP21101)
2. Release the two tabs on the left and right.
Extension cable(A)
DV-303
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DISASSEMBLY FOR REPAIR
1-9 Checking the Mother C.B.A.
1. Remove the 5 screws.
2. Release the 2 tabs.
2. To preserve the quality of the optical pickup replacement
parts during transport and installation, the terminals of
the laser diode are short-circuited. After replacing the
parts, use the proper procedure to return the laser diode
to its original condition. (Refer to page9/2-12 Assembling
the Optical Pickup.)
3. Testers cannot be used to check the laser diode of the
optical pickup. The power supply inside the tester can
easily damage the laser diode.
4. Take care when handling the flexible cable because
excessive force can cause it to break.
5. You cannot adjust the semifixed resistor for laser power
adjustment. Do not turn it.
2-2 Disassembly Procedure
Use the following procedure to replace major parts.
For the assembly procedure, follow the flow chart in reverse.
3. Checked by connecting the module C.B.A. and the moth-
er C.B.A. with the extension cables.
Extension cable (B)x2
Module C.B.A. Mother C.B.A.
PS3201-PP23201
PS4201-PP24201
Note
Be sure to initialize the player whenever you replace a
C.B.A. (Refer to page21/4-1, Initializing the DVD player.)
2. Assembling and Disassembling the Optical
Pickup (Mechanical Parts)
The optical pickup can be damaged by static electricity from
your body. Be sure to take static electricity countermeasures
when working around the optical pickup.
2-1 Handling the Optical Pickup
The optical pickup can be damaged by static electricity
from your body. Be sure to take static electricity counter-
measures when working around the optical pickup.
1. The optical pickup is an extremely high-precision mecha-
nism. Do not subject it to strong impact.
Extension cable(B)
Extension
cable(B)
DV-303
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DISASSEMBLY FOR REPAIR
2-3Lubricating the Loading Base Unit
When replacing parts, lubricate the parts maked “xxx” in the diagram
Part number Service Tool
Grease 410-0013-05 Grease EM-30LG
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DISASSEMBLY FOR REPAIR
2-4 Static Electricity Countermeasures
The laser diode inside the traverse unit (optical pickup) can
be damaged by static electricity from your body. Be sure to
take static electricity countermeasures when working around
the optical pickup.
2-4-1 Static Electricity Countermeasure Methods
1. Ground yourself
Use an anti-static wrist strap to discharge static electrici-
ty from your body.
2. Ground the workbench
Lay a conductive material (sheet) or steel sheet on the
surface where the traverse unit (optical pickup) is to be
placed, then ground the sheet.
2-5 Disassembling the Clamp Base Unit
Remove the 2 screws.
2-6 Disassembling the Clamper Weight, Clamper
Yoke, Magnet and Clamper
1. Release the tab, and pull out the clamper.
2. Release the 3 tabs on the clamper.
2-4-2 Short-circuit the laser diode
Solder the land in the flexible cable of the optical pickup.
Notes
• Be sure to do this befer disconnecting the flexible cable
of the optical pickup from the module C.B.A.
• Use an anti-static soldering iron to short-circuit and
unshort-circuit laser diode.
(Recommended soldering iron: Hakko with ESD counter-
measure)
• After you have finished repairing the laser diode, follow
the correct procedure to remove the solder from the
short-circuit location. (Refer to page5/2. Assembling and
Disassembling the Optical Pickup (Mechanical Parts).)
DV-303
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DISASSEMBLY FOR REPAIR
2-7 Disassembling the Traverse Unit
1. Remove the 3 screws.
Note
Be sure to take static electricitiy countermeasures befer
disconnecting the flexible cable.(Refer to page7/2-4 Stat-
ic Electricity Countermeasures.)
2. Disconnect the 2 flexible cables.
2-8 Disassembling the Stepping Motor Unit
1. Disconnect the flexible cable.
2. Remove the 2 screws.
Note
Take care when handling the flexible cable because it
can be broken by excessive force.
2-9 Disassembling the Optical Pickup Unit
1. Remove the hook of the FPC holder, then remove the
FPC holder itself.
2. Remove the screw.
3. Release the tab, then remove spring holder 1.
Note
Be sure not to lose the spring.
4. Remove the guide shaft.
Note
Be sure to adjust the optical pickup tilt after replacing the
optical pickup.
(Refer to page10/2-14 Opitcal Pickup Tilt Adjustment.)
DV-303
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DISASSEMBLY FOR REPAIR
2-10 Disassembling the Nut Unit
1. Remove the screw.
Notes
• The nut unit is not part of the optical pickup.
Before replacing the optical pickup, remove the nut unit
for use with the new optical pickup.
• After installation, use screw lock to lock the screw in posi-
tion.
• When reassembling, use screw lock to lock the screw in
position after attaching it.
2-12 Assembling the Optical Pickup
1. Install the optical pickup.
Note
Take care not ot attach the tilt spring and guide shaft in
the wrong order.
2. Fit the protruding part of the pickup FPC into the convex-
part of the FPC holder to install it.
2-11 Disassembling the Sub-Shaft Preload Spring
1. Remove the screw.
Notes
• Handle the sub-shaft preload spring carefully because the
shape of the tip is easily deformed.
• The sub-shaft preload spring is not part of the optical
pickup. Before replacing the optical pickup, remove the
sub-sahft preload spring for use with the new optical
pickup.
• After installation, use screw lock to lock the screw in posi-
tion.
DV-303
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DISASSEMBLY FOR REPAIR
3. Insert the pickup FPC into connector FP5201 on the mod-
ule C.B.A. 2-14 Optical Pickup Tilt Adjustment
4. Remove the solder from the pickup FPC's soldered short-
circuit.
5. Adjust the optical pickup tilt after removing the solder.
(Refer to page10/2-14 Optical Pickup Tilt Adjustment.)
2-13 Disassembling the Spindle Motor Unit
1. Remove the three screws.
Note
Be sure to adjust the optical pickup tilt after replacing the
spindle motor unit.
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