Samsung DVD-V940K, DVD-V29000K, SV-DVD240, DVD-V645K, DVD-V25000K Training Manual

DVD-VCR COMBINATION

Chassis : Kaiser Karaoke
DVD-V940K/V645K/V642K
DVD-V29000K/V25000K
SV-DVD240

TRAINING

1. Precautions

2. Reference Information

3. Product Specification

4. Operating Instructions

5. Disassembly and Reassembly

6. Alignment and Adjustment

7. Circuit Operating Description

8. VCR Deck Operating Description

9. Troubleshooting

10. Block Diagram

11. Wiring Diagram

12. Schematic Diagrams

Manual

DVD-VCR COMBINATION CONTENTS

TRAINING MANUAL

DVD-V940K/V645K/V642K/V29000K/V25000K, SV-DVD240

ELECTRONICS

© Samsung Electronics Co., Ltd. APR. 2004

Printed in Korea

AK82-00557A

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.

IMPORTANT SERVICE GUIDE

◆ MODE SWITCH (PROGRAM SWITCH) ASSEMBLY POINT

1) When installing the ass’y deck on the Main PCB, be sure to align the assembly point of mode switch.

VCR MAIN PCB

ASSEMBLY POINT

Fig. 1

◆ HOW TO EJECT THE CASSETTE TAPE
(If the tape is stuck in the unit)

1) Turn the Gear Worm Πclockwise in the direction of arrow with a screwdriver. (See Fig. 2)

(Other method ; Remove the screw of Motor Load Ass’y, Separate the Motor Load Ass’y)

2) When Slider S, T approachs the unloading position, rotate holder Clutch counterclockwise after inserting screwdriver in the

frame’s bottom hole in order to wind the unwound tape. (Refer to Fig. 3)
(If you rotate Gear Worm Πcontinuously when tape is unwinding, you may cause tape contamination by grease and

tape damage. Be sure to wind the unwound tape with the unit in the horizontall position.)

3) Rotate Gear Worm Πclockwise using a screwdriver until the mecha is in the eject state. Remove the tape. (Refer to Fig. 2)

Fig. 2 Fig. 3

ΠGEAR WORM

FRAME

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 Deck-Assy.

3) Make solder land 2 points short on Pick-up.
(See Fig. 1-4)

4) Disassemble the Pick-up.

1-5-2 Assembly

1) Replace the Pick-up.

2) Remove the soldering 2 points on Pick-up.

3) Reassemble the Deck-Assy.

PICK-UP ASS'Y

SOLDER LAND 2 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. Reference Information

2-1 Introduction to DVD

2-1-1 The Definition of DVD

DVD is the next generation medium and is the acronym of the Digital Versatile Disc or the Digital Video Disc,
which maximizes the saving density of the disk surface using the MPEG-2 compression technology to enable the
storage of 17G bytes of data on the same size CD.

1) 7 times the storage capacity of the conventional CD

◆ Minimized the track pitch and pit size to 1/2 of conventional CD.

◆ Uses red laser with short-wavelenght of 650nm (635nm).

⌘ DVD Vs. CD-ROM

DVD

CD-ROM

Single-Layer Dual-Layer

Laser Wavelength 650nm (635nm) 780nm

Track Pitch 0.75um 1.6um

Disc Diameter 120mm

Disc Thickness 1.2 (0.6 x 2) mm 1.2mm

Linear Velocity 3.49m/s 3.84m/s 1.2 ~ 1.4m/s

2) Disc Formats

DVD consists of two 0.6mm discs attached together, enabling access to the upper and lower side of the disk,
and 4 sides could be used at maximum.

Single Layer : 4.7GByte

Polycarbonate

Label

Bonding layer
Reflective layer

Polycarbonate

Label
Polycarbonate

Bonding layer

Reflective layer
Semi-reflective layer

Polycarbonate

Dual Layer : 8.5GByte

Bonding layer
Reflective layer

Reflective layer

Polycarbonate

Polycarbonate

Dual Side Single Layer : 9.5GByte

Polycarbonate

Bonding layer

Reflective layer
Reflective layer

Semi-reflective layer

Semi-reflective layer

Polycarbonate

Dual Side Dual Layer : 17GByte

Reference Information

2-2 Samsung Electronics

2-1-2 DVD Types

FORMAT TYPE APPLICATIONS

DVD-Video Playback Only High quality image and sound for movies and other video media.

DVD-ROM Read Only Multi-functional, multi-midia software that requires large storage capacity.

DVD-Audio Playback Only High quality sound that exceeds the CD, multi-channel Audio.

DVD-R 1 Time Recording Storage media for the computer.

DVD-RAM Rewritable Data access/storage media for the computer.

Reference Information

Samsung Electronics 2-3

2-2 DVD-Video Fromat

2-2-1 Main Features

1) Able to store up to 160 minutes of Movie by utilizing the MPEG-2 compression technology. ( Aver. 133min.)

2) Enables more than 500 lines of horizontal resolution. (Class corresponding to the Master Tapes used in
broadcasting stations)

3) Provides Dolby Digital 5.1ch Surround 3D sound, which enables theater quality sound (NTSC area).

◆ For PALareas, 1 of either MPEG-2 Audio or Dolby Digital must be selected.

4) Multi-Language

◆ Able to store up to 8 languages of dubbing.

◆ Able to store up to 32 subtitle languages.

5) Milti-Aspect Ratio

3TV Mode alternatives ; 16:9 Wide Screen (DVD Basic)/4:3 Pan & Scan/Letter Box.

6) Multi-Story

Possible to implement Interactive Viewing which enables the user to select the scenario.

7) Multi-Angle

Able to view the camera angle you selected among the scenes recorded with multiple camera angles.

Note ; The above media features must have the DVD Title that contains the appropriate contents to function

properly.

2-2-2 Audio & Video Specifications

Classification DVD-Video Video-CD LD

Compression MPEG-2 MPEG-1

Analog

Pixel 720 x 480 352 x 240

VIDEO

Horizontal resolution Max. 500 Lines Max. 250 Lines Max.420 Lines

Compression rate 1/40 1/140

Analog

Transmission speed Max. 9.8Mbps (variable) 1.15Mbps (fixed)

TV aspect 16:9 / 4:3 4:3 4:3

Audio Max. 8 streams 2CH stereo

Recording type Dolby Digital Linear PCM MPEG-1 Layer 2

AUDIO Transmission rate 448Kbps/stream 6.144Mbps/stream 224Kbps

or

Channel 5.1CH/stream 8CH/stream 2CH

Sampling frequency 48KHz 16, 20, 24Bit/48, 96KHz 16Bit/44.1KHz

2 Analog CH.
2 Digital CH.

(16Bit/44.1KHz)

1 Analog CH.

1 Stream of Dolby Digital

2 Digital CH.

(16Bit/44.1KHz)

Reference Information

2-4 Samsung Electronics

2-2-3 Detailed Feature

As the storage capacity increases, the DVD-Video separates the main data and the additional data such as the
Multi-Function into different data areas, enabling the control of time-data ratio to provide the format that enables
the flexible Software development

◆ 1 Movie (3.5Mbps)
+ Subtitle (1 Language)
+ Surround Audio (1 Language)
= 160min storage (4.673Gbytes)

◆ 1 Movie (3.5Mbps)
+ Subtitle (4 Language)
+ Surround Audio (4 Language)
= 160min storage (4.680Gbytes)

◆ 1 Music Video (4Mbps)
+ 2ch High quality Audio (96kHz/24bit)
= 72min storage (4.648Gbytes)

DVD-Video Feature 1 When Developing the DVD Software, various addition and modification is possible.

DVD-Video uses the variable compresion technology, the MPEG-2 to compress the moving image optimally, mini­mizing the Data loss to Provide a clear, natural screen while increasing the storage time.

DVD-Video Feature 2 Application of the MPEG-2 compression technology.

◆ MPEG-2 (Variable compression : Max. 1/40)
✓ Field unit compression.

DVD-Video

✓ Compression rate change according to the amount of Data.
✓ Differentiates the still image anf the moving image

compression rete, reducing Data loss and enables
efficient compression.

◆ MPEG-1 (Fixed compression : Max. 1/140)

✓ Frame unit compression.

Video-CD

✓ Compresses all data using the same ratio.

- Fast movements are jagged, and unnatural

Time

Amount of data

Time

Amount of data

Loss area

Reference Information

Samsung Electronics 2-5

DVD-Video can store the audio using the 5.1ch Dolby Digital compression or the advanced Liner PCM method,
providing the better-than-CD quality and theater like audio quality.

◆ Dolby Digital (AC-3)
✓ Unlike the traditional Dolby pro-Logic method, the Dolby Digital method separates all 5 main channels

(Front L/R, Center, Surround (Rear) L/R)and the Sub woofer to provide live surround audio.

✓ Using the Down Mix method, the conventional Dolby Pro-Logic and Stereo are all compatible.
✓ Each separated channels are played back at CD quality sound. (Frequency band: 20Hz ~ 20KHz)

◆ Linear PCM (Pulse Code Modulation)
✓ Provides the high quality Digital sound without the audio data compression.
✓ Various Digital Recordings are possible as shown in the table to the right.

DVD-Video Feature 3 High quality surround audio.

Sampling Frequency Bit Rate

16bit

48KHz 20bit

24bit
16bit

96KHz 20bit

24bit

◆ Dolby Digital compatible Audio Mode

Audio Coding

Channel Format

Mode

Front Surround (Rear) Remark

LCRLR

1/0 O Mono
2/0 OO Stereo
3/0 OOO
2/1 OOMono
3/1 OOO Mono Surround
2/2 OOOO
3/2 OOOOO

Reference Information

2-6 Samsung Electronics

◆ Audio Dubbing - Max. 8 Languages

◆ Subtitle - Max. 32 Languages. Capable of storing, and selectiong.

◆ Linear PCM (Pulse Code Modulation)

DVD-Video Feature 4 Multi-Language

◆ Unlike the conventional VCD or LD, DVD-Video has the default of 16:9 Wide, and can be viewed using the
conventional 4:3 TV, enabling the expansion of viewer selection capabilities.

✓ 16 : 9 TV : Wide Mode (16:9 Wide Full Screen)
✓ 4 : 3 TV : Letter Box Mode, Pan & Scan Mode

DVD-Video Feature 5 Multi-Aspect

4:3 Pan & Scan

16:9 Wide

4:3 Letter Box

◆ Up to 9 angles of view may be stored, enabling the viewer to select a specific viewpoint at a given time.

--> Especially, for the Music Video and Sports Title, this provides a more lively image of the scene.

DVD-Video Feature 6 Multi-Angle

Note ; Only enable to be worked correctly by an appropriate data supported this function in Disc.

Note ; Only enable to be worked correctly by an appropriate data supported this function in Disc.

Reference Information

Samsung Electronics 2-7

◆ DVD-Video provides the enviroment suitable for the bi-directional Software develoment, providing multiple
scenarios. This feature enables the Multi-Story function.

DVD-Video Feature 7

Multi-Story

◆ For the titles that are not suitable for children viewing, Parental Locks are set, requesting user defined
passwords for viewing

◆ Parential Locks may be set on specific frames of the Title, enabling the player to skip those frames during
playback.

OPTION Parental Lock

◆ Classify the world into 6 regions, and if the DVD Title and the Player’s “Reginal Code” do not agree, playback
is prohibited.

⌘ Regionnal Coding is optional for the Soft developers (Region 0 All Code), but the Hardware developers

must adopt the appropriate regionnal code for sale.

✓ Region 1 : The United States and its territories, Canada.
✓ Region 2 : Europe, Japan, Greenland, Egypt, South Africa, the Middle East.
✓ Region 3 : Taiwan, Hongkong, Korea, South East Asia.
✓ Region 4 : Mexico, South America, Australia, New Zealand.
✓ Region 5 : Russia, Eastern Europe, India, Africa.
✓ Region 6 : China.
✓ Region 0 : Worldwide (All Code)

COPYRIGHT Regional Code & Macrovision

◆ Adoptation of the Macrovision System disables the copying on to other media.

Œ

Œ

¨

¨

Œ

´

ˇ

ˆ

Ø

´

´

ˆ

Reference Information

2-8 Samsung Electronics

◆ The image quality of the DVD-Video may vary accoring to the quality of the Master and the Authoring Process

✓ The image quality of the DVD-Video varies according to the Digital Mastering Source such as the

conventional LD, VCD, or Original Film.

✓ Different Authoring Process are used accoring to the Software developers, and this may affect the

DVD image quality.

⌘ Authoring Process

Remark DVD-Video Authoring Process

Video/Audio

Master

Surround Audio

Master

Subtitle

Master

MPEG-2

Encoding

AC-3/MPEG Audio

Encoding

Cutting
Master

Disc

Production

Subtitle

Encoding

Authoring Process

Video/Audio

Subtitle

Multiplexing

bit stream

bit stream

bit stream

Samsung Electronics 3-1

3. Product Specification

Rated Voltage 220 - 240V, 50Hz

General Power Consumption 19 Watts

Weight 3.8Kg
Size 430mm x 282mm x 82mm
Operating ambient Temperature +5°C ~ +35°C
Installation Conditions Operation position : Horizontal, Relative humidity : Below 75%

Input

Video input (Rear) Euro Scart socket : 1.0Vp-p (unbalanced) 75ohm
Audio input (Rear) Euro Scart socket : -8dBm, 47Kohm unbalnced
RF out UHF 28-69 (lnitial CH36)
Audio (DVD, VCR) RCA jack

Output Audio (DVD only) Digital audio out (OPTICAL, COAXIAL, RCA jack)

Video (DVD, VCR) RCA jack
Video (DVD only) S-Video out, COMPONENT out : RCA jack
Tape format VHS type video tape, S-VHS type video tape (Playback only)
Color system PAL, NTSC4.43, MESECAM, NTSC playback on PAL TV

VCR Video S/N Above 43dB (standard recording)

Resolution Above 240 lines (standard recording)
Audio S/N Above 50dB (Hi-Fi), 39dB (Mono)
Audio frequency characteristics 20Hz - 20KHz (Hi-Fi)
Disc DVD, CD (12Cm), CD (8Cm),

DVD Audio S/N 95dB

Audio dynamic range 105dB

Samsung Electronics 5-1

5. Disassembly and Reassembly

5-1 Cabinet and PCB

5-1-1 Cabinet Top Removal

ΠREMOVE 3 SCREWS

´ Lift up the Cabinet Top in the direction of arrow.

Fig. 5-1 Cabinet Top Removal

5-1-2 Ass’y Bottom Cover Removal

ΠRELEASE 2 HOOKS

(Bottom View)

5-1-4 Function PCB Removal

ΠRELEASE 1 HOOK

Fig. 5-4 Function PCB Removal

Fig. 5-2 Ass’y Bottom Cover Removal

´ RELEASE 3 HOOKS

(Bottom View)

ΠRELEASE 4 HOOKS

(Top View)

Fig. 5-3 Ass’y Front Panel Removal

5-1-3 Ass’y Front Panel Removal

5-2

Disassembly and Reassembly

Samsung Electronics

5-1-5 Chassis Removal

VCR MAIN PCB

S.M.P.S PCB

DVD DECK

VCR DECK

DVD MAIN PCB

ΠREMOVE 2 SCREWS

´ REMOVE 4 SCREWS

ˇ REMOVE 3 SCREWS

¨ REMOVE 2 SCREWS

ˆ REMOVE

3 SCREWS

Fig. 5-5 Chassis Removal

5-1-6 VCR Main PCB Removal

ΠREMOVE 4 SCREWS

VCR MAIN PCB

MODE SWITCH

When installing the ass'y full deck on the Main PCB,
be sure to align the assembly point of mode switch.

ASSEMBLY POINT

Fig. 5-6 VCR Main PCB Removal

Disassembly and Reassembly

5-3Samsung Electronics

5-2 Circuit Board Locations

DVD MAIN PCB

FUNCTION PCB

VCR MAIN PCB

S.M.P.S PCB

Fig. 5-7 Circuit Board Locations

5-4

Disassembly and Reassembly

Samsung Electronics

5-3 VCR Deck Parts Locations

5-3-1 Top View

Œ

´

ˆ

Ø

ˇ

¨

Fig. 5-8 Top parts Location-1

ΠGEAR FL CAM
´ MOTOR LOADING ASS’Y
ˇ LEVER FL ARM ASS’Y
¨ HOLDER FL CASSETTE ASS’Y
ˆ LEVER FL DOOR
Ø SLIDER FL DRIVE

Disassembly and Reassembly

5-5Samsung Electronics

Œ

´

Ø

∏”’ Ô˝

Ò

˝

ˇ¨

ˆ

Fig. 5-9 Top Parts Location-2

ΠFE HEAD
´ CYLINDER ASS’Y
ˇ ACE HEAD ASS’Y
¨ LEVER UNIT PINCH ASS’Y
ˆ LEVER #9 GUIDE ASS’Y
Ø LEVER TENSION ASS’Y
∏ BAND BRAKE ASS’Y

” DISK S REEL
’ LEVER S BRAKE ASS’Y
˝ GEAR IDLE
Ô LEVER IDLE
 LEVER T BRAKE ASS’Y
Ò DISK T REEL

5-6

Disassembly and Reassembly

Samsung Electronics

5-3-2 Bottom View

Œ

´ˇ

¨

ˆ

Ø

∏

”

’

˝

Fig. 5-10 Bottom Parts Location

ΠGEAR JOINT 1
´ GEAR JOINT 2
ˇ BRAKET GEAR
¨ MOTOR CAPSTAN ASS’Y
ˆ LEVER T LOAD ASS’Y
Ø GEAR LOADING DRIVE
∏ LEVER S LOAD ASS’Y
” HOLDER CLUTCH ASS’Y
’ BELT PULLEY
˝ SLIDER CAM

Disassembly and Reassembly

5-7Samsung Electronics

5-4 VCR Deck

ΠLEVER FL ARM ASS'Y

"C"

"B"

PIN

HOLE "A"

5-4-1 Holder FL Cassette Ass’y Removal

1) Pull the Holder FL Cassette Ass'y Πto the eject
position.

2) Pull the Holder FL Cassette Ass'y Πas grasping
the Holder FL Cassette Ass'y Πand Lever FL
Cassette-R ´ in the same time to release hooking

from Main Base until the Boss [A] of Holder FL
Cassette Ass'y Πis taken out from the Rail [B].

3) Lift the Holder FL Cassette Ass'y Œ, in this time,
you have to grasp the Lever FL Cassette-R ´

Continuously until the Holder FL Cassette Ass'y
Πis taken out completely.

Note : Be sure to insert Lever FL Cassette-R ´ in the
direction of “A” to prevent separation and breakage

of the Lever FL Cassette-R ´ at disassembling and
reassembling.

RAIL [B]

BOSS [A]

´ LEVER FL CASSETTEE -R

"A"

ΠHOLDER FL
CASSETTEE ASS'Y

Fig. 5-11 Holder FL Cassette Ass’y Removal

5-4-2 Lever FL Arm Ass’y Removal

1) Push the hole “A” in the direction of arrow “B”
use the pin.(about Dia. 2.5)

2) Pull out the Lever FL Arm Ass'y Πfrom the Boss
of Main Base.

3) Remove the Lever FL Arm Ass'y Πin the direction
of arrow “C”.

Fig. 5-12 Lever FL Arm Ass’y Removal

5-8

Disassembly and Reassembly

Samsung Electronics

ΠGEAR FL CAM

GEAR WORM WHEEL

POST

TIMING POINT

Fig. 5-15 Gear FL Cam, Gear Worm

5-4-4 Slider FL Drive, Gear FL Cam Removal

1) Pull the Slider FL Drive Πto the front direction.

2) Remove the Slider FL Drive Πin the direction of

arrow. (Refer to Fig. 5-13)

3) Remove the Gear FL cam ´.

Note : When reinstalling be sure to reassemble Slider
FL drive Πafter you insert the Boss of Lever FL
ARM-R in Groove of Slider Fl drive Œ.

Assembly : Align the Gear FL Cam Πwith the Gear
worm wheel Post as shown drawing.
(Refer to Timing point)

ΠSLIDER FL DRIVE

´ GEAR FL CAM

Fig. 5-14 Slider FL Drive Removal

5-4-3 Lever FL Door Removal

1) Release the Hook ´ and Remove the Lever FL
Door Œ in the direction of arrow “A”.

Fig. 5-13 Lever FL Door Removal

"B"

"C"

"A"

´ LEVER FL DOOR

ΠSLIDER FL DRIVE

Disassembly and Reassembly

5-9Samsung Electronics

5-4-5 Gear Worm Wheel Removal

1) Remove the Gear Worm wheel Œ.

ΠGEAR WORM WHEEL

Fig. 5-16 Gear Worm Wheel Removal

5-4-6 Cable Flat Removal

1) Remove the Drum connecting part of Cable Flat Œ
from Connector Waffer ´.

´ CONNECTOR WAFER

ΠCABLE FLAT

Fig. 5-17 Cable Flat Removal

5-10

Disassembly and Reassembly

Samsung Electronics

5-4-8 Bracket Gear, Gear Joint 2, 1 Removal

1) Remove the SCREW Œ.

2) Remove the Bracket Gear ´.

3) Remove the Gear Joint 2 ˇ.

4) Remove the Gear Joint 1 ¨.

Assembly :

1) Be sure to align dot mark of Gear Joint 1 Œwith

dot mark of Gear Joint 2 ´ as shown Fig 5-20.
(Refer to Timing point1)

2) Confirm the Timing Point 2 of the Gear Joint 2 ´
and Slider Cam ˇ.

ΠSCREW
´ BRAKET GEAR

¨ GEAR JOINT 1

ˇ GEAR JOINT 2

Fig. 5-19 Bracket Gear, Gear Joint 1,2 Removal

ΠGEAR JOINT1

´ GEAR JOINT2

ˇ SLIDER CAM

TIMING POINT 1

TIMING POINT 2

Fig. 5-20 Gear Joint 1,2 Assembly

5-4-7 Motor Loading Ass’y Removal

1) Remove the screw Œ.

2) Remove the Motor Loading Ass’y ´.

´ MOTOR LOADING ASS`Y

ΠSCREW

Fig.5-18 Motor Loading Ass’y Removal

Disassembly and Reassembly

5-11Samsung Electronics

5-4-10 Gear Loading Drive, Slider Cam,

Lever Load S, T Ass’y Assembly

1) When reinstalling, be sure to align dot of Lever
Load T Ass'y Œwith dot of Lever Load S Ass'y ´

as shown in drawing, (Refer to Timing Point 1).

2) Insert the Pin A,B,C,D into the Slider Cam ˇhole,

3) Be sure to align dot of Lever Load T Πand dot of
Gear Loading Drive ¨, (Refer to Timing Point 2).

4) Aline dot of Gear Loading drive ¨ with mark of
Slider Cam ˇ as shown in drawing(Refer to

Timing Point 3).

´ LEVER LOAD S

Œ

LEVER LOAD T

PIN A

PIN C

PIN B

PIN D

ˇ SLIDER CAM

TIMING POINT 2

TIMING POINT 1

TIMING POINT 3

Fig. 5-22 Gear Loading Drive, Slider Cam,

Lever Load S, T Ass’y Assembly

5-4-9 Gear Loading Drive, Slider Cam,

Lever Load S, T Ass’y Removal

1) Remove the Belt Pulley. (Refer to Fig. 5-38)

2) Remove the Gear Loading Drive Πafter releasing

Hook [A] in the direction arrow as shown in detail
drawing.

3) Remove the Slider Cam ´.

4) Remove the Lever Load S Ass’y ˇ & Lever Load T
Ass’y ¨.

ΠGEAR LOADING DRIVE

ˇ LEVER LOAD S ASS'Y

¨ LEVER LOAD T ASS'Y

´ SLIDE CAM

HOOK(A)

Fig. 5-21 Gear Loading Drive, Slider Cam,

Lever T, S Load Ass’y Removal

5-12

Disassembly and Reassembly

Samsung Electronics

5-4-12 Lever Tension Ass’y,

Band Brake Ass’y Removal

1) Remove the Lever Brake S Ass'y (Refer to Fig 5-25).

2) Remove the Spring Tension Lever Œ.

3) Rotate stopper of Main Base in the direction of
arrow “A”.

4) Lift the Lever Tension Ass'y ´ & Band brake
Ass'y ˇ.

Note :

1) When replacing the Lever Tension Ass'y ´, be sure
to apply Grease on the post,

2) Take care not to touch stain on the felt side, and not
to be folder and broken Band brake Ass'y

3) After Lever Tension Ass'y seated, Rotate stopper of
Main Base to the Mark[B].

ΠSPRING TENTION LEVER

´ LEVER TENTION ASS`Y

ˇ BAND BRAKE ASS`Y

STOPPER

MARK[B]

"A"

Fig. 5-24 Lever Tension Ass’y,

Band Brake Ass’y Removal

5-4-11 Lever Pinch Drive,

Lever Tension Drive Removal

1) Remove the Lever Pinch Drive Œ, Lever Tension

Drive ´.

ΠLEVER PINCH DRIVE

´ LEVER TENSION DRIVE

Fig. 5-23 Lever Pinch Drive,

Lever Tension Drive Removal

Disassembly and Reassembly

5-13Samsung Electronics

5-4-14 Gear Idle Ass’y Removal

1) Push the Lever Idle Πin the direction of arrow
“A”, “B”.

2) Lift the Lever Idle Œ.

Assembly :

1) Apply oil in two Bosses of Lever Idle Œ.

2) Assemble the Gear Idle ´ with the Lever Idle Œ.

Note : When replacing the Gear Idle ´, be sure to
add oil in the boss of Lever Idle Œ.

´ GEAR IDLE

"B"

ΠLEVER IDLE

´ GEAR IDLE

"A"

HOOK "C"

Fig. 5-26 Gear Idle Ass’y Removal

5-4

-13 Lever Brake S, T Ass’y

Removal

1) Release the Hook [A] and the Hook [B], [C] in the
direction of arrow as shown in Fig 5-25.

2) Lift the Lever S, T Brake Ass'y Œ, ´ with spring
brake ˇ.

Assembly :

1)Assembly the Lever S Brake Ass'y Πon the Main

Base.

2)Assembly the Lever T Brake Ass'y ´ with spring

brake ˇ.

Note : Take extreme care not to be folded and
transformed Spring Brake at removing or reinstalling.

HOOK(A)

´ LEVER T BRAKE ASS`Y

ΠLEVER S BRAKE ASS'Y

HOOK(B)

HOOK(C)

ˇ SPRING BRAKE

Fig. 5-25 Lever Brake S, T Ass’y Removal