Samsung DVD-L200M Service manual
PORTABLE DVD PLAYER
DVD-L200
DVD-L200M
DVD-L200W
DVD-L200WM
SERVICE
1. Precautions
2. Troubleshooting
3. Exploded Views and Parts List
4. Electrical Parts List
5. Block Diagram
6. Schematic Diagrams
Manual
PORTABLE DVD PLAYER CONTENTS
SERVICE MANUAL DVD-L200/DVD-L200M/DVD-L200W/DVD-L200WM
ELECTRONICS
© Samsung Electronics Co., Ltd. OCT. 2003
Printed in Korea
AK82-00404A
This Service Manual is a property of Samsung Electronics Co .,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
Samsung Electronics 1-1
1. Precautions
1-1 Safety Precautions
1) Before returning an instrument to the customer,
always make a safety check of the entire instrument,
including, but not limited to, the following items:
(1) Be sure that no built-in protective devices are
defective or have been defeated during servicing.
(1)Protective shields are provided to protect both
the technician and the customer. Correctly replace
all missing protective shields, including any
removed for servicing convenience.
(2)When reinstalling the chassis and/or other assembly in the cabinet, be sure to put back in place
all protective devices, including, but not limited to,
nonmetallic control knobs, insulating fish papers,
adjustment and compartment covers/shields, and
isolation resistor/capacitor networks. Do not operate this instrument or permit it to be operated without all protective devices correctly installed and
functioning.
(2) Be sure that there are no cabinet openings through
which adults or children might be able to insert
their fingers and contact a hazardous voltage. Such
openings include, but are not limited to, excessively wide cabinet ventilation slots, and an improperly fitted and/or incorrectly secured cabinet back
cover.
(3) Leakage Current Hot Check-With the instrument
completely reassembled, plug the AC line cord
directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leakage
current tester or a metering system that complies
with American National Standards institute (ANSI)
C101.1 Leakage Current for Appliances and
Underwriters Laboratories (UL) 1270 (40.7). With
the instrument’s AC switch first in the ON position
and then in the OFF position, measure from a
known earth ground (metal water pipe, conduit,
etc.) to all exposed metal parts of the instrument
(antennas, handle brackets, metal cabinets, screwheads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis.
Any current measured must not exceed 0.5mA.
Reverse the instrument power cord plug in the outlet and repeat the test. See Fig. 1-1.
Any measurements not within the limits specified
herein indicate a potential shock hazard that must
be eliminated before returning the instrument to
the customer.
Fig. 1-1 AC Leakage Test
(4) Insulation Resistance Test Cold Check-(1) Unplug
the power supply cord and connect a jumper wire
between the two prongs of the plug. (2) Turn on the
power switch of the instrument. (3) Measure the
resistance with an ohmmeter between the
jumpered AC plug and all exposed metallic cabinet
parts on the instrument, such as screwheads,
antenna, control shafts, handle brackets, etc. When
an exposed metallic part has a return path to the
chassis, the reading should be between 1 and 5.2
megohm. When there is no return path to the chassis, the reading must be infinite. If the reading is
not within the limits specified, there is the possibility of a shock hazard, and the instrument must be
repaired and rechecked before it is returned to the
customer. See Fig. 1-2.
Fig. 1-2 Insulation Resistance Test
DEVICE
UNDER
TEST
(READING SHOULD
NOT BE ABOVE
0.5mA)
LEAKAGE
CURRENT
TESTER
EARTH
GROUND
TEST ALL
EXPOSED METER
SURFACES
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
2-WIRE CORD
Antenna
Terminal
Exposed
Metal Part
ohm
ohmmeter
Precautions
1-2 Samsung Electronics
2) Read and comply with all caution and safety related notes on or inside the cabinet, or on the chassis.
3) Design Alteration Warning-Do not alter or add to
the mechanical or electrical design of this instrument. Design alterations and additions, including
but not limited to, circuit modifications and the
addition of items such as auxiliary audio output
connections, might alter the safety characteristics of
this instrument and create a hazard to the user. Any
design alterations or additions will make you, the
servicer, responsible for personal injury or property
damage resulting therefrom.
4) Observe original lead dress. Take extra care to
assure correct lead dress in the following areas:
(1) near sharp edges, (2) near thermally hot parts (be
sure that leads and components do not touch thermally hot parts), (3) the AC supply, (4) high voltage,
and (5) antenna wiring. Always inspect in all areas
for pinched, out-of-place, or frayed wiring, Do not
change spacing between a component and the
printed-circuit board. Check the AC power cord for
damage.
5) Components, parts, and/or wiring that appear to
have overheated or that are otherwise damaged
should be replaced with components, parts and/ or
wiring that meet original specifications.
Additionally, determine the cause of overheating
and/or damage and, if necessary, take corrective
action to remove any potential safety hazard.
6) Product Safety Notice-Some electrical and mechanical parts have special safety-related characteristics
which are often not evident from visual inspection,
nor can the protection they give necessarily be
obtained by replacing them with components rated
for higher voltage, wattage, etc. Parts that have special safety characteristics are identified by shading,
an ( )or a ( )on schematics and parts lists. Use
of a substitute replacement that does not have the
same safety characteristics as the recommended
replacement part might create shock, fire and/or
other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate.
Precautions
Samsung Electronics 1-3
1-2 Servicing Precautions
CAUTION : Before servicing units covered by this
service manual and its supplements, read and follow
the Safety Precautions section of this manual.
Note : If unforseen circumstances create conflict
between the following servicing precautions and any
of the safety precautions, always follow the safety precautions. Remember: Safety First.
1-2-1 General Servicing Precautions
(1) a. Always unplug the instrument’s AC power cord
from the AC power source before (1) re-moving
or reinstalling any component, circuit board,
module or any other instrument assembly, (2)
disconnecting any instrument electrical plug or
other electrical connection, (3) connecting a test
substitute in parallel with an electrolytic capacitor in the instrument.
b. Do not defeat any plug/socket B+ voltage inter-
locks with which instruments covered by this
service manual might be equipped.
c. Do not apply AC power to this instrument and
/or any of its electrical assemblies unless all
solid-state device heat sinks are correctly installed.
d. Always connect a test instrument’s ground lead
to the instrument chassis ground before connecting the test instrument positive lead. Always
remove the test instrument ground lead last.
Note : Refer to the Safety Precautions section ground
lead last.
(2) The service precautions are indicated or printed on
the cabinet, chassis or components. When servicing, follow the printed or indicated service precautions and service materials.
(3) The components used in the unit have a specified
flame resistance and dielectric strength.
When replacing components, use components
which have the same ratings. Components identified by shading, by( ) or by ( ) in the circuit diagram are important for safety or for the characteristics of the unit. Always replace them with the exact
replacement components.
(4) An insulation tube or tape is sometimes used and
some components are raised above the printed
wiring board for safety. The internal wiring is
sometimes clamped to prevent contact with heating components. Install such elements as they
were.
(5) After servicing, always check that the removed
screws, components, and wiring have been installed correctly and that the portion around the
serviced part has not been damaged and so on.
Further, check the insulation between the blades of
the attachment plug and accessible conductive
parts.
1-2-2 Insulation Checking Procedure
Disconnect the attachment plug from the AC outlet
and turn the power ON. Connect the insulation resistance meter (500V) to the blades of the attachment
plug. The insulation resistance between each blade of
the attachment plug and accessible conductive
parts(see note) should be more than 1 Megohm.
Note : Accessible conductive parts include metal panels, input terminals, earphone jacks, etc.
Precautions
1-4 Samsung Electronics
1-3 ESD Precautions
Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity.
Such components commonly are called Electrostatically Sensitive Devices(ESD). Examples of typical ESD
devices are integrated circuits and some field-effect
transistors and semiconductor chip components. The
following techniques should be used to help reduce
the incidence of component damage caused by static
electricity.
(1) Immediately before handling any semiconductor
component or semiconductor-equipped assembly,
drain off any electrostatic charge on your body by
touching a known earth ground. Alternatively,
obtain and wear a commercially available discharging wrist strap device, which should be
removed for potential shock reasons prior to applying power to the unit under test.
(2) After removing an electrical assembly equipped
with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
(3) Use only a grounded-tip soldering iron to solder or
unsolder ESD devices.
(4) Use only an anti-static solder removal devices.
Some solder removal devices not classified as
“anti-static” can generate electrical charges sufficient to damage ESD devices.
(5) Do not use freon-propelled chemicals. These can
generate electrical charges sufficient to damage
ESD devices.
(6) Do not remove a replacement ESD device from its
protective package until immediately before your
are ready to install it.(Most replacement ESD
devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or
comparable conductive materials).
(7) Immediately before removing the protective ma-
terials from the leads of a replacement ESD device,
touch the protective material to the chassis or circuit assembly into which the device will be
installed.
CAUTION : Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
(8) Minimize bodily motions when handling unpack-
aged replacement ESD devices. (Otherwise harmless motion such as the brushing together of your
clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient
to damage an ESD device).
Precautions
Samsung Electronics 1-5
1-4 Handling the optical pick-up
The laser diode in the optical pick up may suffer electrostatic breakdown because of potential static electricity from clothing and your body.
The following method is recommended.
(1) Place a conductive sheet on the work bench (The
black sheet used for wrapping repair parts.)
(2) Place the set on the conductive sheet so that the
chassis is grounded to the sheet.
(3) Place your hands on the conductive sheet(This
gives them the same ground as the sheet.)
(4) Remove the optical pick up block
(5) Perform work on top of the conductive sheet. Be
careful not to let your clothes or any other static
sources to touch the unit.
◆ Be sure to put on a wrist strap grounded to the
sheet.
◆ Be sure to lay a conductive sheet made of copper
etc. Which is grounded to the table.
Fig.1-3
(6) Short the short terminal on the PCB, which is in-
side the Pick-Up ASS’Y, before replacing the PickUp. (The short terminal is shorted when the PickUp Ass’y is being lifted or moved.)
(7) After replacing the Pick-up, open the short termi-
nal on the PCB.
THE UNIT
WRIST-STRAP
FOR GROUNDING
1M
1M
CONDUCTIVE SHEET
Precautions
1-6 Samsung Electronics
1-5 Pick-up disassembly and reassembly
1-5-1 Disassembly
1) Remove the power cord.
2) Disassemble the Ass’y-DVD Deck.
3) Make solder land 3 points short on Pick-up FPC.
(See Fig. 1-4)
4) Disassemble the Pick-up.
1-5-2 Assembly
1) Replace the Pick-up.
2) Remove the soldering 3 points on Pick-up FPC.
3) Reassemble the Ass’y-DVD Deck.
ASS'Y-DVD DECK
FPC (Bottom View)
SOLDER LAND 3 POINTS SHORT
Note : If the assembly and disassembly are not done in correct sequence, the Pick-up may be damaged.
Fig. 1-4
No focus incoming
FE in SIC1-8
is within specified range?
Check Deck Ass'y.
Check RIC1 and A, B, C, D input.
Yes
No
A
Samsung Electronics 2-1
2. Troubleshooting
No Disc recognition
LD is outputted
from object lens at
play key input?
No focus incoming and
no disc occurs.
Yes
No
B
A
Troubleshooting
2-2 Samsung Electronics
NO LD CD ON
RIC1-22 is 5V?
Current exceeds 0.1A?
LD out pick-up replace.
Open check in related circuit.
Check SIC1
Yes
Yes
Yes
No
No
Divide RQ1 emitter terminal
voltage and 5V real voltage
difference into 6.2ohm.
B
No pick-up home positing
SIC1-13output is normal?
Check the Deck Ass'y and connection
Check SIC1
Yes
No
Troubleshooting
Samsung Electronics 2-3
FINE SEEK Check
RIC1-58
is missing?
TZCO signal
(SIC1-159) is occurs?
Track incomming is
delayed?
TE is normal level?
Pick-up transfer smooth.
Check RIC1 Peripheral curcuit.
Check SIC1 Peripheral curcuit.
Time out due to many jump counts.
Check SIC1 peripheral circuit.
SIC1-3 output
is normal?
Check Deck Ass'y.
Check Deck Ass'y.
Check RIC1-31 terminal.
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No Search Operation
TEZISLV, SIC1-6
output is normal?
Actual velocity occurs
at SIC1-13 terminal?
Check RIC1 peripheral circuit.
RFAGCO, RIC1-71
output level is normal?
Check SIC1 peripheral circuit.
No
No
No
Yes
TE occurs in
search range?
Focus On?
Yes
Yes
A
See "Fine Seek Check"
No
Yes
Check pick-up.
No
Troubleshooting
2-4 Samsung Electronics
CD/VCD/DVD L/R output error
(Mixed Audio output)
Normal DATA 0 is
input in AIC01-3?
Analog output of
AIC01-14, 15, 18, 19 is
normal?
Check Jack3 peripheral
soldering shot.
Check ZIC1-184 output.
Check ZIC1-179
(CD/VCD ; 16.9344MHz,
DVD ; 18.432MHz)
Yes
Yes
No
No
AIC185-1,7 output
is normal?
Check AIC185 peripheral circuit.
Yes
No
Output in AIC02,
AIC02-8, 9 is normal?
Check AIC02-1, 2, 16
function select.
Yes
No
Abnormal rotation of
disc motor
Input of RF signal
is normal? (SIC1-152)
SPD output is normal?
(SIC1-28)
After resoldering SIC1.
SIC3-7 output (FG)
is normal?
Check or replace disc motor or check SIC1, MIC1.
Check Deck ass'y and connection
Check path to RIC1 and SIC1.
Check RIC1 soldering and power.
RIC1-71 output
are normal?
RIC1-1 output
is normal?
Check RIC1 peripheral
circuit and A, B, C, D.
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Troubleshooting
Samsung Electronics 2-5
Digital output error
Output in ZIC1-181
is normal?
Output in
Jack3 is normal?
Check Jack3 peripheral
soldering shot.
Check ZIC01 peripheral circuit.
Check Jack3.
Yes
No
No
Yes
Headphone output error
Jack1, Jack2 output is
normal?
AIC06, AIC07-1,5 output
is normal?
Check Jack1, Jack2
peripheral soldering shot.
Check Jack1, Jack2 output error.
Check AIC02, AIC03-4 output.
Yes
No
No
Yes
Troubleshooting
2-6 Samsung Electronics
S-Video output error
27MHz clock
input is normal at
pin 161 in ZIC1?
Analog output
is normal at pin 172,173
in ZIC1?
Check the connection between
pin 161 in ZIC1 and ZY1.
Check the soldering of ZIC1.
Yes
Yes
No
No
Analog signals are
inputted normally at
pin6,2 in VIC01?
Yes
No
Power is
normal at pin 1, 16 in
VIC01?
Yes
No
Yes
Check the connection between
pin172,173 in ZIC1 and pin6,2 in VIC01.
Check the connection betwen
VIC01 and pin 4 in PQ118.
Check the soldering of VIC01.
No
Check the connection between
VIC01 and output jack.
Pin of DAC VDD
in ZIC1 has
normal level?
Check the connection to
positive pin in PE120.
Yes
No
Peak to peak
voltage level of VR101,102?
Y and C signal
appears at output
jack at pin5,4?
No
Yes
Check the cable.
Speater output error
AIC05-5, 8, 14, 18
output is normal?
AIC02
output is normal?
Check AIC01 peripheral
circuit.
Check AIC05 peripheral circuit.
Check AIC02 peripheral circuit.
Check AIC185 peripheral circuit.
Yes
No
No
Yes
AIC185-1,7 output
is normal?
Yes
No
Troubleshooting
Samsung Electronics 2-7
Battery charging error
VDD and 5V
appears at pin5 in
PIC03?
pin2,4 in PQ502
is in low state?
Base in PQ503
is in high state?
Check the connection to
pin8 in PIC04.
Check the connection between
pin base in PQ503 and pin48 in UIC01.
Yes
No
No No
Collector in PQ505
is in low state?
Yes
Yes
No
Pin33 in
UIC01 is in
high state?
Yes
No
VDD appears at
pin10,24,35 in
UIC01?
Yes
Change PQ505 and PR506.
Change PQ503
Check the connection betwen
pin33 in UIC01 and pin2 in PJ501.
Check the connection between
pin10,24,35 in UIC01 and pin1 in PIC04.
No
Pin30 in UIC01
is in high state?
Check the connection between
pin4 in PIC03 and pin30 in UIC01.
Yes
No
Yes
8.38MHz is normal
at pin40,41, in UIC01?
No
Yes
Change UXT02.
Check the battery.
CVBS output error
27MHz clock
input is normal at
pin 161 in ZIC1?
Analog output
is normal at pin 169
in ZIC1?
Check the connection between
pin 161 in ZIC1 and ZX101.
Check the soldering of ZIC1.
Yes
No
No
Analog signals are
inputted normally at
pin4 in VIC01?
Yes
No
Power is
normal at pin 1, 16 in
VIC01.
Yes
No
Yes
Check the connection between
pin 169 in ZIC1 and VIC01.
Check the connection betwen
VIC01 and pin 4 in PQ118.
Pin of DAC VDD25
in ZIC1 has
normal level?
Check the connection to
positive pin in PE120.
Yes
No
Yes
Check the soldering of VIC01.
No
Check the connection between
VIC01 and output jack.
Peak to peak
voltage level of VR104?
Video signal of
about 1V appears at output
jack at pin3?
No
Yes
Check the cable.
Loading...