samsung DVD-M101, DVD-M, DVD-M103, DVD-M104G, DVD-M105 Service Manual

...

DVD PLAYER

Chassis : Milleno DVD-M101/M103/M104G/M105/M105B DVD-M107/M107G/M108/M109 DVD-M201/M203/M205/M205G/M207/M207G DVD-M300/M301/M305/M307/M307G DVD-M403/M405/M407/M407G/M409

SERVICE

1. Precautions

2. Disassembly and Reassembly

3. Troubleshooting

4. Exploded Views and Parts List

5. Electrical Parts List

6. Block Diagrams

7. PCB Diagrams

8. Wiring Diagrams

9. Schematic Diagrams

Manual

DVD PLAYER CONTENTS

SERVICE MANUAL DVD-M101/M201/M301/M403

DVD-M101/M104G

DVD-M103/M105/M105B/M107/M107G/M108/M109/M203/M205/M205G/M207/M207G

DVD-M201

DVD-M300

DVD-M301/M305/M307/M307G/M403/M405/M407/M407G/M409

ELECTRONICS

Printed in Korea

AH68-00807A

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 remove 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 a 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 re-pared 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 Melal Part

ohm

ohmmeter

Precautions

1-2 Samsung Electronics

2) Read and comply with all caution and safety related notes non or inside the cabinet, or on the chassis.

3) Design Alteration Warning-Do not alter of 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 service, 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 created 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 Instruments covered by this service manual and its supplements, read and follow the Safety Precautions section of this manual.

Note : If unforseen circument 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 i-entified 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

CONDUCTIVE SHEET

Precautions

1-6 Samsung Electronics

1-5 Pick-up disassembly and reassembly

1-5-1 Disassembly

1) Remove the power code.

2) Disassemble the Deck-Assy.

3) Solder land 2 points short (2LD ; 4 points) on Pick-up. (See Fig. 1-4)

4) Disassembly the Pick-up.

1-5-2 Assembly

1) Replace the Pick-up.

2) Remove the soldering 2 points (2LD ; 4 points) on Pick-up.

3) Reassemble the Deck-Assy.

PICK-UP ASS'Y

1LD 2LD

SOLDER LAND 2 POINTS SHORT

DVD

SOLDER LAND

4 POINTS SHORT

Note : If the assembly and disassembly are not done in correct sequence, the Pick-up may be damaged.

Fig. 1-4

Samsung Electronics

2-1

2. Disassembly and Reassembly

2-1 Cabinet and PCB

2-1-1 Top Cabinet Removal

1) Remove 3 Screws Œ on the back Top Cabinet.

2) Lift up the Top Cabinet in direction of arrow.

Œ 3 SCREWS

Fig. 2-1 Top Cabinet Removal

Note : Reassembly in reverse order.

2-2

Samsung Electronics

Disassembly and Reaasembly

2-1-2 Door-Tray Removal

1) Supply power and open Tray Œ.

2) Disassemble the Door-Tray ´ in direction of arrow “A”.

3) Close Tray Œ and power off.

Note : If Tray Œ doesn’t open, insert a Screw driver ¨ into the Emergency hole ˇ (as shown in detailed draw-

ing) and then push it in the direction of arrow “B”. Open Tray manually.

Œ TRAY

´ DOOR-TRAY

"A"

ˇ EMERGENCY HOLE

¨ SCREW DRIVER

"B"

Fig. 2-2 Door-Tray Removal

Disassembly and Reaasembly

Samsung Electronics

2-3

´ ASS'Y FRONT-CABINET

ˆ KEY PCB

¨ 5 SCREWS

ˇ KNOB-JOG

Œ KNOB-VOLUME

<DVD-M10x SERIES/DVD-M20x SERIES MODELS>

<DVD-M30x SERIES/DVD-M40x SERIES MODELS>

Fig. 2-3 Ass’y Front-Cabinet Removal

2-1-3 Ass’y Front-Cabinet Removal

1) Remove Knob-Volume Œ and Ass’y Front-Cabinet ´.

2) Remove Knob-Jog ˇ and 5 Screws ¨ and Key PCB ˆ.

2-4

Samsung Electronics

Disassembly and Reaasembly

DECK-ASS'Y

Œ 3 SCREWS

DCN1

MAIN PCB

FLAT-CABLE

CONNECT-WIRE

DCN2

2-1-4 Ass’y Deck Removal

1) Disconnect Flat-Cable,Connect-Wire from DCN1, DCN2 on Main PCB.

2) Remove 3 Screws Œ from the Ass’y Deck and lift it up.

Fig. 2-4 Ass’y Deck Removal

Disassembly and Reaasembly

Samsung Electronics

2-5

¨ MAIN PCB

ˇ 3 SCREWS

Œ 2 SCREWS

´ JACK PCB

Fig. 2-5 Main PCB, Jack PCB Removal

2-1-5 Main PCB, Jack PCB Removal

1) Remove 2 Screws Œ and lift up the Jack PCB ´.

2) Remove 3 Screws ˇ and lift up the Main PCB ¨.

2-6

Samsung Electronics

Disassembly and Reaasembly

JACK PCB

MAIN PCB

KEY PCB

* DVD-M30x SERIES/M40x SERIES MODELS ONLY

2-2 PCB Location

Fig. 2-6 PCB Location

Disassembly and Reaasembly

Samsung Electronics

2-7

CT1

CT2

NO. CONNECTOR NO. DIRECTION CONNECTOR NO. NO.

Œ FLAT-CABLE DECK PCB MAIN PCB DCN1 ´

CONNECT-WIRE

(HCN1) HOUSING PCB MAIN PCB DCN2 ¨

ˆ CN8 MAIN PCB JACK PCB DCN1 Ø ∏ PCN1 MAIN PCB JACK PCB PCNS1 ” ’ FCN1 MAIN PCB JACK PCB CN2-S ˝

CT1 CT2 CT3

CT4 CT5

DECK-ASS'Y

DECK PCB

JACK PCB

MAIN PCB

∏

”

’

CT3

CT4

CT5

DVD-M10x SERIES/DVD-M20x SERIES MODELS

2-3 Connector Diagram

Fig. 2-7 Connector Diagram

2-8

Samsung Electronics

Disassembly and Reaasembly

CT1

CT2

NO. CONNECTOR NO. DIRECTION CONNECTOR NO. NO.

Œ FLAT-CABLE DECK PCB MAIN PCB DCN1 ´

CONNECT-WIRE

(HCN1) HOUSING PCB MAIN PCB DCN2 ¨

ˆ CN8 MAIN PCB JACK PCB DCN1 Ø ∏ PCN1 MAIN PCB JACK PCB PCNS1 ” ’ KCN1 KEY PCB JACK PCB CN3 ˝

CT1 CT2 CT3

CT4 CT5

DECK-ASS'Y

DECK PCB

JACK PCB

MAIN PCB

KEY PCB

∏

”

’

CT3

CT4

CT5

DVD-M30x SERIES/DVD-M40x SERIES MODELS

Fig. 2-8 Connector Diagram

Disassembly and Reaasembly

Samsung Electronics

2-9

2-4 Deck

2-4-1 Tray Disc Removal

1) Insert a Screw Driver Œ into Emergency Hole ´ and push the Slider Housing ˇ in the direction arrow “A”.

2) When the Tray Disc ¨ comes out a little, pull it in the direction arrow “B” by hand.

3) Pull the Tray Disc ¨ to disassemble , while simultaneously pushing 2 Stoppers ˆ (left, right) in the direction arrow “C”, “D”.

Fig. 2-9 Tray Disc Removal

"A"

Œ SCREW DRIVER

´ EMERGENCY HOLE

ˇ SLIDER HOUSING

¨ TRAY DISC

"B"

"C"

ˆ STOPPER

"D"

2-10

Samsung Electronics

Disassembly and Reaasembly

2-4-2 Assy P/U Deck Removal

1) Disconnect DCN2 Œ, DCN3 ´.

2) Lift down the Assy P/U Deck ˇ while simultaneously pushing 2 Hooks ¨, ˆ in the direction of arrow “A”, “B”.

Fig. 2-10 Assy P/U Deck Removal

Œ DCN2

ˆ HOOK

¨ HOOK

´ DCN3

ˇ ASSY- P/U DECK

"A"

"B"

SLIDER HOUSING

Disassembly and Reaasembly

Samsung Electronics

2-11

2-4-3 Housing Ass’y Removal

1) Remove Belt Œ.

2) Push the Hook ´ in the direction arrow “A” and lift up Pulley Gear ˇ.

3) Push the Slider Housing ˆ in the direction arrow “B” and lift up the Gear Tray ¨.

4) Lift up the Slider Housing ˆ.

5) Remove the soldering Ø of 2 points (Red, Black).

6) Remove 2 Screws ∏ and lift down the Motor Load Assy ”.

7) Push the 3 Hooks ’ bottom side in the direction arrow “C” and lift up the Housing PCB ˝.

8) Push the Hooks Ô and remove Deck PCB .

Fig. 2-11 Housing Ass’y Removal

Œ BELT

ˇ PULLEY GEAR

¨ GEAR TRAY

” MOTOR LOAD ASSY

’ 3 HOOKS

˝ HOUSING PCB

 DECK PCB

Ô HOOK

Ø SOLDERING

∏ 2 SCREWS

ˆ SLIDER HOUSING

´ HOOK

"A"

"B"

"C"

2-12

Samsung Electronics

Disassembly and Reaasembly

2-4-4 Sub Chassis Removal

1) Remove the Soldering of Motor Feed (+, - wire) Œ.

2) Remove the 4 Screws ´.

3) Lift up the Ass’y Brkt Deck ˇ.

Fig. 2-12 Sub Chassis Removal

´ 4 SCREWS

ˇ ASSY-BRAK DECK

Œ SOLDERING OF

MOTOR FEED (+, - WIRE)

Disassembly and Reaasembly

Samsung Electronics

2-13

2-4-5 Ass’y Brkt Deck Removal

1) Remove Washer Œ.

2) Remove Gear Feed B ´ , Gear Feed Aˇ.

3) Remove 2 Screws ¨.

4) Remove Shaft Pick-Up ˆ and Pick-Up Assy Ø.

5) Remove 1 Screw ∏.

6) Remove 2 Screws ”.

7) Remove 3 Spring Spindle ’ and Motor Spindle Ass’y ˝.

Fig. 2-13 Ass’y Brkt Deck Removal

¨ 2 SCREW

Œ WASHER

´ GEAR FEED B

” 2 SCREWS

∏ 1 SCREW

ˆ SHAFT PICK-UP

ˇ GEAR FEED A

Ø PICK-UP ASS'Y

’ SPRING SPINDLE

˝ MOTOR SPINDLE

2-14

Samsung Electronics

Disassembly and Reaasembly

MEMO

Samsung Electronics 3-1

3. Troubleshooting

No Disc recognition

LD is outputted

from object lens at

play key input?

No focus incoming and

no disc occurs.

Yes

No focus incoming

FE in SIC1-25

is within specified range?

SIC3-26, 27 output

are normal?

Check open state from

SIC3 to pick-up.

Check RIC1 and A, B, C, D input.

Check SIC3.

Yes

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