SAMSUNG CFT27918X-SMS Service Manual
DVD Television
Chassis : V18A
Model: CFTD2083TX/SMS
DVD Television Cassette Recorder CONTENTS
Precautions
Specifications
Disassembly and Reassembly
Alignment and Adjustment (Electrical)
Troubleshooting
Exploded View and Parts List
Electric Parts List
Block Diagram
Schematic Diagrams
1.
2.
3.
4.
5.
6.
7.
8.
9.
ELECTRONICS
© Samsung Electronics Co., Ltd. JULY. 2002
Printed in Korea
AA82-00093A
1. Precautions
1-1 Safety Precautions
1. Be sure that all of the built-in protective
devices are replaced. Restore any missing
protective shields.
2. When reinstalling the chassis and its
assemblies, be sure to restore all protective
devices, including: nonmetallic control knobs
and compartment covers.
3. Make sure that there are no cabinet openings
through which people—particularly
children—might insert fingers and contact
dangerous voltages. Such openings include
the spacing between the picture tube and the
cabinet mask, excessively wide cabinet
ventilation slots, and improperly fitted back
covers.
If the measured resistance is less than 1.0
megohm or greater than 5.2 megohms, an
abnormality exists that must be corrected
before the unit is returned to the customer.
4. Leakage Current Hot Check (Figure 1-1):
Warning: Do not use an isolation
transformer during this test. Use a leakagecurrent tester or a metering system that
complies with American National Standards
Institute (ANIS C101.1, Leakage Current for
Appliances), and Underwriters Laboratories
(UL Publication UL1410, 59.7).
5. With the unit completely reassembled, plug
the AC line cord directly into the power
outlet. With the unit’s AC switch first in the
ON position and then OFF, measure the
current between a known earth ground (metal
water pipe, conduit, etc.) and all exposed
metal parts, including: antennas, handle
brackets, metal cabinets, screwheads and
control shafts. The current measured should
not exceed 0.5 milliamp. Reverse the powerplug prongs in the AC outlet and repeat the
test.
Fig. 1-1 AC Leakage Test
6. Antenna Cold Check:
With the unit’s AC plug disconnected from the
AC source, connect an electrical jumper across
the two AC prongs. Connect one lead of the
ohmmeter to an AC prong. Connect the other
lead to the coaxial connector.
7. X-ray Limits:
The picture tube is especially designed to prohibit X-ray emissions. To ensure continued
X-ray protection, replace the picture tube only
with one that is the same type as the original.
Carefully reinstall the picture tube shields and
mounting hardware; these also provide X-ray
protection.
8. High Voltage Limits:
High voltage must be measured each time servicing is done on the B+, horizontal deflection
or high voltage circuits. Correct operation of
the X-ray protection circuits must be
reconfirmed whenever they are serviced.
(X-ray protection circuits also may be called
“horizontal disable” or “hold-down”.)
Heed the high voltage limits. These include
the X–ray Protection Specifications Label, and
the Product Safety and X-ray Warning Note on
the service data schematic.
Precautions
Samsung Electronics 1-1
LEAKAGE
CURRENT
TESTER
DEVICE
UNDER
TEST
TEST ALL
EXPOSED METAL
SURFACES
2-WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
EARTH
GROUND
(READING SHOULD
NOT BE ABOVE
0.5mA)
Follow these safety, servicing and ESD precautions to prevent damage and protect against potential
hazards such as electrical shock and X-rays.
1-1 Safety Precautions (Continued)
9. High voltage is maintained within specified
limits by close-tolerance, safety-related
components and adjustments. If the high
voltage exceeds the specified limits, check
each of the special components.
10. Design Alteration Warning:
Never alter or add to the mechanical or
electrical design of this unit. Example: Do not
add auxiliary audio or video connectors. Such
alterations might create a safety hazard. Also,
any design changes or additions will void the
manufacturer’s warranty.
11. Hot Chassis Warning:
Some TV receiver chassis are electrically
connected directly to one conductor of the AC
power cord. If an isolation transformer is not
used, these units may be safely serviced only
if the AC power plug is inserted so that the
chassis is connected to the ground side of the
AC source.
To confirm that the AC power plug is inserted
correctly, do the following: Using an AC
voltmeter, measure the voltage between the
chassis and a known earth ground. If the
reading is greater than 1.0V, remove the AC
power plug, reverse its polarity and reinsert.
Re-measure the voltage between the chassis
and ground.
12. Some TV chassis are designed to operate with
85 volts AC between chassis and ground,
regardless of the AC plug polarity. These units
can be safely serviced only if an isolation
transformer inserted between the receiver and
the power source.
13. Some TV chassis have a secondary ground
system in addition to the main chassis ground.
This secondary ground system is not
isolated from the AC power line. The two
ground systems are electrically separated by
insulating material that must not be defeated
or altered.
14. Components, parts and wiring that appear to
have overheated or that are otherwise
damaged should be replaced with parts that
meet the original specifications. Always
determine the cause of damage or overheating, and correct any potential hazards.
15. Observe the original lead dress, especially
near the following areas: Antenna wiring,
sharp edges, and especially the AC and high
voltage power supplies. Always inspect for
pinched, out-of-place, or frayed wiring. Do
not change the spacing between components
and the printed circuit board. Check the AC
power cord for damage. Make sure that leads
and components do not touch thermally hot
parts.
16. Picture Tube Implosion Warning:
The picture tube in this receiver employs
“integral implosion” protection. To ensure
continued implosion protection, make sure
that the replacement picture tube is the same
as the original.
17. Do not remove, install or handle the picture
tube without first putting on shatterproof
goggles equipped with side shields. Never
handle the picture tube by its neck. Some
“in-line” picture tubes are equipped with a
permanently attached deflection yoke; do not
try to remove such “permanently attached”
yokes from the picture tube.
18. Product Safety Notice:
Some electrical and mechanical parts have
special safety-related characteristics which
might not be obvious from visual inspection.
These safety features and the protection they
give might be lost if the replacement component differs from the original—even if the
replacement is rated for higher voltage,
wattage, etc.
Components that are critical for safety are
indicated in the circuit diagram by shading,
( ) or ( ).
Use replacement components that have the
same ratings, especially for flame resistance
and dielectric strength specifications.
A replacement part that does not have the
same safety characteristics as the original
might create shock, fire or other hazards.
Precautions
1-2 Samsung Electronics
!
1-2 Servicing Precautions
1. Servicing precautions are printed on the
cabinet. Follow them.
2. Always unplug the unit’s AC power cord from
the AC power source before attempting to: (a)
Remove or reinstall any component or
assembly, (b) Disconnect an electrical plug or
connector, (c) Connect a test component in
parallel with an electrolytic capacitor.
3. Some components are raised above the printed
circuit board for safety. An insulation tube or
tape is sometimes used. The internal wiring is
sometimes clamped to prevent contact with
thermally hot components. Reinstall all such
elements to their original position.
4. After servicing, always check that the screws,
components and wiring have been correctly
reinstalled. Make sure that the portion around
the serviced part has not been damaged.
5. Check the insulation between the blades of the
AC plug and accessible conductive parts
(examples: metal panels, input terminals and
earphone jacks).
6. Insulation Checking Procedure: Disconnect the
power cord from the AC source and turn the
power switch ON. Connect an insulation
resistance meter (500V) to the blades of the AC
plug.
The insulation resistance between each blade
of the AC plug and accessible conductive parts
(see above) should be greater than 1 megohm.
7. Never defeat any of the B+ voltage interlocks.
Do not apply AC power to the unit (or any of
its assemblies) unless all solid-state heat sinks
are correctly installed.
8. Always connect a test instrument’s ground
lead to the instrument chassis ground before
connecting the positive lead; always remove
the instrument’s ground lead last.
Precautions
Samsung Electronics 1-3
Warning1: First read the “Safety Precautions” section of this manual. If some unforeseen circumstance creates a conflict between
the servicing and safety precautions, always follow the safety precautions.
Warning2: An electrolytic capacitor installed with the wrong polarity might explode.
1. Some semiconductor (“solid state”) devices
are easily damaged by static electricity. Such
components are called Electrostatically
Sensitive Devices (ESDs); examples include
integrated circuits and some field-effect
transistors. The following techniques will
reduce the occurrence of component damage
caused by static electricity.
2. Immediately before handling any semicon
ductor components or assemblies, drain the
electrostatic charge from your body by
touching a known earth ground. Alternatively,
wear a discharging wrist-strap device. (Be
sure to remove it prior to applying power—
this is an electric shock precaution.)
3. After removing an ESD-equipped assembly,
place it on a conductive surface such as
aluminum foil to prevent accumulation of
electrostatic charge.
4. Do not use freon-propelled chemicals. These
can generate electrical charges that damage
ESDs.
5. Use only a grounded-tip soldering iron when
soldering or unsoldering ESDs.
6. Use only an anti-static solder removal device.
Many solder removal devices are not rated as
“anti-static”; these can accumulate sufficient
electrical charge to damage ESDs.
7. Do not remove a replacement ESD from its
protective package until you are ready to
install it. Most replacement ESDs are
packaged with leads that are electrically
shorted together by conductive foam,
aluminum foil or other conductive materials.
8. Immediately before removing the protective
material from the leads of a replacement ESD,
touch the protective material to the chassis or
circuit assembly into which the device will be
installed.
9. Minimize body motions when handling
unpackaged replacement ESDs. Motions such
as brushing clothes together, or lifting a foot
from a carpeted floor can generate enough
static electricity to damage an ESD.
Precautions
1-4 Samsung Electronics
1-3 Precautions for Electrostatically Sensitive Devices (ESDs)
CAUTION
These servicing instructions are for use by
qualified service personnel only.
To reduce the risk of electric shock do not
perform any servicing other than that contained
in the operating instructions unless you are
qualified to do so.
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.1-2
(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 terminal
on the PCB.
WRIST-STRAP
FOR GROUNDING
1M
THE UNIT
1M
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) Make solder land 2 points short on Pich-up.
(See Fig. 1-3)
4) Disassembly 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.
SOLDER LAND 2 POINTS SHORT
PICK-UP ASS'Y
Note : If the assembly and disassembly are not done in correct sequence, the Pick-up may be damaged.
Fig. 1-3
Samsung Electronics 3-1
2. Specifications
MEMO
3-2 Samsung Electronics
Disassembly and Reassembly
Samsung Electronics 3-1
1. Remove the screws located on the side of the back cover.
3. Disassembly and Reassembly
3-1 Disassembly
3-1-1 Back Cover Removal
Disassembly and Reassembly
3-2 Samsung Electronics
3-1-2 Main Assembly Removal
1. Release four connectors between DVD Interface and Main PCB Assembly.
2. Remove screws from the DVD and VCR shield case.
3. Remove shield case, then take out DVD PCB Assembly.
4. Remove screws from the DVD and VCR Deck.
5. Life up the DVD and VCR Deck, then Remove screws from Main and DVD Interface PCB Assembly.
6. Remove the Main and DVD Interface PCB Assembly.
Disassembly and Reassembly
Samsung Electronics 3-3
3-1-3 Power Assembly Removal
1. Release two connectors between Power and Main PCB Assembly.
2. Remove screws from the Power Assembly.
Disassembly and Reassembly
3-4 Samsung Electronics
Fig. 3-1 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
3-2 VCR Deck Parts Locations
3-2-1 Top View
Œ
´
ˇ
¨
ˆ
Ø
Disassembly and Reassembly
Samsung Electronics 3-5
Œ
Fig. 3-2 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
´ ˇ ¨
ˆ
Ø
∏”’ Ô ˝
”
Ò
Disassembly and Reassembly
3-6 Samsung Electronics
3-2-2Bottom View
Fig. 3-3 Bottom Parts Location
ΠGEAR JOINT 1
´ GEAR JOINT 2
ˇ BRACKET 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
Œ
´ˇ
¨
ˆ
Ø
∏
”
’
˝
Disassembly and Reassembly
Samsung Electronics 3-7
3-3-1 Lever FL Door Removal
1) Push the Holder FL Cassette Ass'y Πabout
20mm in the direction of arrow “A”.
2) Rotate the Lever FL Door ´ in the direction of
arrow “B”.
3) Release the Hook ˇ and Remove the Lever FL
Door ´ in the direction of arrow “C”.
"B"
"C"
"A"
´ LEVER FL DOOR
ˇ HOOK
ΠHOLDER FL CASSETTE ASS'Y
3-3-2 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.
3-3 Main Deck
Fig. 3-4 Lever FL Door Removal
Fig. 3-5 Holder FL Cassette Ass’y Removal
ΠHOLDER FL
CASSETTEE ASS`Y
BOSS [A]
´ LEVER FL CASSETTEE -R
"A"
RAIL [B]
Disassembly and Reassembly
3-8 Samsung Electronics
3-3-4 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. 3-7 Gear FL Cam, Gear Worm
3-3-3 Slider FL Drive, Gear FL Cam Removal
1) Pull the Slider FL Drive Πto the front direc tion.
2) Remove the Slider FL Drive Πin the direction
of arrow. (Refer to Fig. 3-6)
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)
Fig. 3-6 Slider FL Drive Removal
ΠLEVER FL ARM ASS`Y
"C"
"B"
PIN
HOLE "A"
Fig. 3-8 Lever FL Arm Ass’y Removal
ΠGEAR FL CAM
GEAR WORM WHEEL
POST
TIMING POINT
´ GEAR FL CAM
ΠSLIDER FL DRIVE
Disassembly and Reassembly
Samsung Electronics 3-9
3-3-5 Gear Worm Wheel Removal
1) Remove the Gear Worm wheel Œ.
Fig. 3-9 Gear Worm Wheel Removal
3-3-6 Motor Loading Ass’y Removal
1) Remove the screw Œ.
2) Remove the Motor Loading Ass’y ´.
Fig. 3-10 Motor Loading Ass’y Removal
ΠGEAR WORM WHEEL
´ MOTOR LOADING ASS`Y
ΠSCREW
Disassembly and Reassembly
3-10 Samsung Electronics
3-3-7 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
Œ
with dot mark of Gear Joint 2 ´ as shown Fig
3-12.
(Refer to Timing point1)
2) Confirm the Timing Point 2 of the Gear Joint 2
´ and Slider Cam ˇ.
3-3-8 Gear Loading Drive, Slider Cam,
Lever Load S, T Ass’y Removal
1) Remove the Belt Pulley. (Refer to Fig. 3-30)
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 ˇ, Link Load ˆ &
Lever Load ¨, Link Load Ø.
´
Fig. 3-11 Bracket Gear, Gear Joint 1,2 Removal
Fig. 3-12 Gear Joint 1,2 Assembly
Fig. 3-13 Gear Loading Drive, Slider Cam,
Lever T, S Load Ass’y Removal
GEAR JOINT 1
ˇ GEAR JOINT 2
ΠSCREW
´ BRAKET GEAR
HOOK(A)
SLIDE CAM
ΠGEAR LOADING DRIVE
¨ LEVER LOAD T
Ø LINK LOAD T
ˇ LEVER LOAD S
ˆ LINK LOAD S
ΠGEAR JOINT1
TIMING POINT 1
´ GEAR JOINT2
TIMING POINT 2
ˇ SLIDER CAM
Disassembly and Reassembly
Samsung Electronics 3-11
3-3-9 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
Œ
with 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
ˇ
hole,
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).
3-3-10 Lever Pinch Drive,
Lever Tension Drive Removal
1) Remove the Lever Pinch Drive Œ, Lever
Tension Drive ´.
Fig. 3-14 Gear Loading Drive, Slider Cam,
Lever Load S, T Ass’y Assembly
Fig. 3-15 Lever Pinch Drive,
Lever Tension Drive Removal
Œ
LEVER LOAD T
TIMING POINT 1
´ LEVER LOAD S
ΠLEVER PINCH DRIVE
´ LEVER TENSION DRIVE
PIN D
LEVER LOAD S
PIN B
TIMING POINT 2
TIMING POINT 3
PIN A
PIN C
LEVER LOAD T
ˇ SLIDER CAM
Disassembly and Reassembly
3-12 Samsung Electronics
3-3-11 Lever Tension Ass’y,
Band Brake Ass’y Removal
1) Remove the Lever Brake S Ass'y (Refer to Fig
3-17).
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].
3-3-12
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 3-17.
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.
Fig. 3-16 Lever Tension Ass’y,
Band Brake Ass’y Removal
Fig. 3-17 Lever Brake S, T Ass’y Removal
ˇ BAND BRAKE ASS`Y
HOOK(A)
ΠSPRING TENTION LEVER
STOPPER
"A"
MARK[B]
´ LEVER TENTION ASS`Y
LEVER S BRAKE ASS`Y
ˇ SPRING BRAKE
HOOK(C)
HOOK(B)
´ LEVER T BRAKE ASS`Y
Disassembly and Reassembly
Samsung Electronics 3-13
Fig. 3-19 Disk S, T Reel Removal
3-3-13 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.
3-3-14 Disk S, T Reel Removal
1) Lift the Disk S, T Reel Œ, ´.
Fig. 3-18 Gear Idle Ass’y Removal
"A"
ΠLEVER IDLE
GEAR IDLE
HOOK "C"
"B"
´ GEAR IDLE
DISK S REEL
´ DISK T REEL
Disassembly and Reassembly
3-14 Samsung Electronics
3-3-15 Holder Clutch Ass’y Removal
1) Remove the Washer Slit Œ.
2) Lift the Holder Clutch Ass’y ´.
Note : When you reinstall Holder Clutch Ass'y
1) Check the condition of spring as shown in
detail A.
2) Don't push Holder Clutch Ass'y down with
excessive force Just insert Holder Clutch Ass'y
into post center with dead force and Rotate it
smoothly.
Be sure to confirm that spring is in the slit of
Gear Center Ass'y as shown in detail B.
Fig. 3-20 Holder Clutch Ass’y Removal
3-3-16 Lever Up Down Ass’y, Gear Center
Ass’y Removal
1)
Remove the 2 hooks in the direction of arrow as
shown Fig. 3-21 and lift the Lever Up Down Ass’y
Œ.
2) Lift the Gear Center Ass’y ´.
Assembly :
1) Insert the Lever Up Down Ass'y Πin the rectangular holes on Main Base as shown in Fig 3-
22.
2) Lift the Lever Up Down Ass'y Œ about 35°.
(Refer to Fig 3-22)
3) Insert Ring of the Gear Center Ass'y ´ in the
Guide of the Lever Up Down Ass'y Œ.
4) Insert the Gear Center Ass'y ´ in the post on
Main Base.
5) Push down the Lever Up Down Ass'y Πfor
locking of the Hook.
Note :
1) Take care not to separate and sentence does not
mark sense.
2) Be sure to confirm that Ring of the Gear Center
Ass'y ´ is in the Guide of the Lever Up Down
Ass'y Πafter finishing assembly of Lever Up
Down Ass'y Œ and Gear Center Ass'y ´.
Fig. 3-21 Lever Up Down Ass’y Removal
Fig. 3-22 Lever Up Down Ass’y Removal
ΠWASHER SLIT
´ HOLDER CLUTCH ASS`Y
ΠLEVER UP DOWN ASS`Y
DETAIL A
<BAD>
<BAD>
SPRING
DETAIL B
SPRING
<GOOD>
<GOOD>
´ GEAR CENTER ASS`Y
GEAR CENTER ASS'Y
GUIDE
LEVER UP DOWN ASS'Y
RING
GEAR
POST
HOOK
35
MAIN BASE
Disassembly and Reassembly
Samsung Electronics 3-15
3-3-18 Lever Unit Pinch Ass’y, Plate Joint,
Spring Pinch Drive Removal
1) Lift the Unit Pinch Ass’y Œ.
2) Remove the Plate Joint ´ from Lever Pinch
Drive.
3) Remove the Spring Pinch Drive ˇ.
Note :
1) Take extreme care not to touch the grease on
the Roller Pinch.
2) When reinstalling, be sure to apply grease on
the post pinch roller.
Fig. 3-23 Guide Cassette Door Removal
Fig. 3-24 Lever Unit Pinch Ass’y, Plate Joint,
Spring Pinch Drive Removal
3-3-17 Guide Cassette Door Removal
1) Lift the Hook [A].
2) Rotate the Guide Cassette Door Πin the direction of arrow.
Note : After reinstalling the Guide Cassette Door
Πsure the Hook [A].
ΠGUIDE CASSETTE DOOR
HOOK [A]
ΠLEVER UNIT PINCH ASS`Y
´ PLATE JOINT
ˇ SPRING PINCH DRIVE
Disassembly and Reassembly
3-16 Samsung Electronics
3-3-19 Lever #9 Guide Ass’y Removal
1) Remove the Spring #9 Guide Œ.
2) Lift the Spring #9 Guide Ass’y ´ in the direction of arrow “A”.
Note :
1) Take extreme care not to get grease on the tape
Guide Post.
2) After reinstalling, check the bottom side of the
Post #9 Guide to the top side of Main Base.
Fig. 3-25 Lever #9 Guide Ass’y Removal
3-3-20 FE Head Removal
1) Remove the screw Œ.
2) Lift the FE Head ´.
Fig. 3-26 FE Head Removal
"A"
ΠSPRING #9 GUIDE
´ LEVER #9 GUIDE ASS`Y
"B"
ΠFE HEAD
Disassembly and Reassembly
Samsung Electronics 3-17
3-3-21 ACE Head Removal
1) Pull out the FPC from connector of ACE Head
Ass’y ´.
2) Remove the screw Œ.
3) Lift the ACE Head Ass’y ´.
3-3-22 Slider S, T Ass’y Removal
1) Move the Slider S, T Ass’y Œ, ´ to slot, and
then lift it to remove. (Refer to arrow)
Fig. 3-27 ACE Head Removal
Fig. 3-28 Slider S, T Ass’y Removal
ΠSCREW
´ HEAD ACE ASS`Y
ΠSLIDER S ASS`Y
´ SLIDER T ASS`Y
Disassembly and Reassembly
3-18 Samsung Electronics
3-3-23
Plate Ground Deck, Cylinder Ass’y
Removal
1) Remove the 3 Screws Œ.
2) Lift the Plate Ground Deck ´.
3) Lift the Cylinder Ass’y ˇ.
Assembly :
1) Match the 3 holes in the bottom of Cylinder
ass'y ˇ to the 3 holes of Main Base as attending not to drop or knock the Cylinder ass'y ˇ.
2) Tighten the 1 Screw Œ.
3) Match the Plate Ground Deck ´ to the Hole of
Base Main.
4) Tighten the other 2 Screws Œ.
Note :
1) Take care not to touch the Cylinder Ass'y ˇ
and the tape guide post at reinstalling.
2) When reinstalling, Don't push down too much
on Screw Driver.
Π3 SCREWS
´ PLATE GROUND DECK
ˇ CYLINDER ASS'Y
Fig. 3-29 Plate Ground Deck, Cylinder Ass’y Removal
3-3-24 Belt Pulley Removal
1) Remove the Belt Pulley Œ.
Note : Take extreme care not to get grease on Belt
Pulley Πat assembling or reassembling.
Fig. 3-30 Belt Pulley Removal
3-3-25 Level Head Cleaner Ass’y Removal
(Optional)
1) Release the Hook Œ.
2) Lift the Lever Head Cleaner Ass’y
´.
Fig. 3-31 Level Head Cleaner Ass’y Removal
ΠBELT PULLEY
´ LEVER HEAD CLEANER ASS'Y
ΠHOOK
SLEEVE-HEAD CLEANER
Disassembly and Reassembly
Samsung Electronics 3-19
3-3-26 Damper Capstan, Motor Capstan Ass’y
Removal
1) Remove the Damper Capstan Πin the direction of arrow.
2) Remove the 3 Screws ´.
3) Remove the Motor Capstan Ass’y ˇ.
Assembly :
1) Match the 3 holes of Motor Capstan Ass’y ˇ to
the 3 holes of Main Base. Be careful not to drop
or knock the Motor Capstan Ass'y ˇ.
2) Tighten the 3 Screws ´ in the direction of
arrow as shown detail drawing.
3) Assemble the Damper Capstan Œ.
Note : After tightening screws, check if there is
gap between the head of screws and the top side
of Main Base. There should have no gap between
the head of screws and the top side of Main Base.
After reinstalling, adjusting the tape transport
system again.
3-3-27 How to Eject the Cassette Tape
(If the unit does not operate on condition that
is inserted into housing ass’y)
1) Turn the Gear worm Πclockwise with screw
driver.(Refer to arrow)
(Other method : Remove the Screw of Motor
Load Ass'y, Separate the Motor Load Ass'y)
ΠGEAR WORM
Fig. 3-32 Damper Capstan,Motor Capstan Ass’y Removal
Fig. 3-33 How to Eject the Cassette Tape
2) When Slider S,T are approched in the position
of unloading, rotate holder Clutch counterclockwise after inserting screw driver in the
hole of frame's bottom in order to wind the
unwinded tape.
(Refer to Fig.3-34)
(If you rotate Gear Worm Πcontinuously
when tape is in state of unwinding, you may
cause a tape contamination by grease and tape
damage.
Be sure to wind the unwinded tape in the state
of set horizently.)
3) Rotate Gear Worm Πclockwise using screw
driver again up to the state of eject mode and
then pick out the tape.(Refer to Fig.3-33)
Fig. 3-34
´ 3 SCREWS
A
B
C
ΠDAMPER CAPSTAN
ˇ MOTOR CAPSTAN ASS'Y
FRAME
Disassembly and Reassembly
3-20 Samsung Electronics
Fig. 3-4-1 Location of Tape Transport Adjustment
Fig. 3-4-2 Tape Travel Diagram
3-4 Tape Transport System and Adjustment Locations
The tape transport system has been adjusted precisely in the factory. Alignment is not necessary except for
the following :
1) Noise observed on the screen.
2) Tape damage.
3) Parts replacement in the tape transport system.
Lower flange height of tape guide is used as the reference for the transport adjustment.
To maintain the height of the tape guide and prevent damage, do not apply excessive force onto the main
base.
GUIDE ROLLER "S"
CYLINDER ASS'Y
GUIDE ROLLER "T"
FULL ERASE HEAD
#3 GUIDE POST
TENSION POST
POST TENSION
TILT SCREW
X - POSITION
ADJUST SILT
AZIMUTH SCREW
#8 GUIDE POST
SUPPLY REEL DISK
FE HEAD CYLINDER ASS'Y
GUIDE ROLLER "S" GUIDE ROLLER "T"
HEIGHT SCREW
PINCH ROLLER
#9 GUIDE POST
CAPSTAN
TAKE UP REEL DISK
PINCH ROLLER
#8 GUIDE POST #9 GUIDE POST
#3 GUIDE POST
ACE HEAD
MAIN BASE
CAPSTAN SHAFT
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