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COLOR TELEVISION RECEIVER
Chassis : KS3A(N)
Model : CFT27908X/SMS CFT27918X/SMS
CL29K3W8X/GSU CL29M6P8X/STR
CL29M6P8X/XAX CL34M9P8X/XAX
CM36020S8S/KMT
COLOR TELEVISION RECEIVER CONTENTS
Precautions
Reference Information
Specifications
Alignment and Adjustments
Troubleshooting
Exploded Views and Parts List
Electrical Parts List
Block Diagrams
Wiring Diagram
Schematic Diagrams
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
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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.
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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
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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.
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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)
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Reference Information
Samsung Electronics 2-1
2. Reference Information
2-1 Tables of Abbreviations and Acronyms
A
Ah
Å
dB
dBm
°C
°F
°K
F
G
GHz
g
H
Hz
h
ips
kWh
kg
kHz
kΩ
km
km/h
kV
kVA
kW
I
MHz
Ampere
Ampere-hour
Angstrom
Decibel
Decibel Referenced to One
Milliwatt
Degree Celsius
Degree Fahrenheit
degree Kelvin
Farad
Gauss
Gigahertz
Gram
Henry
Hertz
Hour
Inches Per Second
Kilowatt-hour
Kilogram
Kilohertz
Kilohm
Kilometer
Kilometer Per Hour
Kilovolt
Kilovolt-ampere
Kilowatt
Liter
Megahertz
MV
MW
MΩ
m
µA
µF
µH
µm
µs
µW
mA
mg
mH
mI
mm
ms
mV
nF
Ω
pF
Ib
rpm
rps
s
V
VA
W
Wh
Megavolt
Megawatt
Megohm
Meter
Microampere
Microfarad
Microhenry
Micrometer
Microsecond
Microwatt
Milliampere
Milligram
Millihenry
Milliliter
Millimeter
Millisecond
Millivolt
Nanofarad
Ohm
Picofarad
Pound
Revolutions Per Minute
Revolutions Per Second
Second (Time)
Volt
Volt-ampere
Watt
Watt-hour
Table 2-1 Abbreviations
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Reference Information
2-2 Samsung Electronics
Table 2-2 Table of Acronyms
ABL
AC
ACC
AF
AFC
AFT
AGC
AM
ANSI
APC
APC
A/V
AVC
BAL
BPF
B-Y
CATV
CB
CCD
CCTV
Ch
CRT
CW
DC
DVM
EIA
ESD
ESD
FBP
FBT
FF
FM
FS
GND
G-Y
H
HF
HI-FI
IC
IC
IF
Automatic Brightness Limiter
Alternating Current
Automatic Chroma Control
Audio Frequency
Automatic Frequency Control
Automatic Fine Tuning
Automatic Gain Control
Amplitude Modulation
American National Standards Institute
Automatic Phase Control
Automatic Picture Control
Audio-Video
Automatic Volume Control
Balance
Bandpass Filter
Blue-Y
Community Antenna Television (Cable TV)
Citizens Band
Charge Coupled Device
Closed Circuit Television
Channel
Cathode Ray Tube
Continuous Wave
Direct Current
Digital Volt Meter
Electronics Industries Association
Electrostatic Discharge
Electrostatically Sensitive Device
Feedback Pulse
Flyback Transformer
Flip-Flop
Frequency Modulation
Fail Safe
Ground
Green-Y
High
High-Frequency
High Fidelity
Inductance-Capacitance
Integrated Circuit
Intermediate Frequency
I/O
L
L
LED
LF
MOSFET
MTS
NAB
NEC
NTSC
OSD
PCB
PLL
PWM
QIF
R
RC
RF
R-Y
SAP
SAW
SIF
SMPS
S/N
SW
TP
TTL
TV
UHF
UL
UV
VCD
VCO
VCXO
VHF
VIF
VR
VTR
VTVM
TR
Input/output
Left
Low
Light Emitting Diode
Low Frequency
Metal-Oxide-Semiconductor-Field-Effect-Tr
Multi-channel Television Sound
National Association of Broadcasters
National Electric Code
National Television Systems Committee
On Screen Display
Printed Circuit Board
Phase-Locked Loop
Pulse Width Modulation
Quadrature Intermediate Frequency
Right
Resistor & Capacitor
Radio Frequency
Red-Y
Second Audio Program
Surface Acoustic Wave(Filter)
Sound Intermediate Frequency
Switching Mode Power Supply
Signal/Noise
Switch
Test Point
Transistor Transistor Logic
Television
Ultra High Frequency
Underwriters Laboratories
Ultraviolet
Variable-Capacitance Diode
Voltage Controlled Oscillator
Voltage Controlled Crystal Oscillator
Very High Frequency
Video Intermediate Frequency
Variable Resistor
Video Tape Recorder
Vacuum Tube Voltmeter
Transistor
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Table 2 - 3 IC Line - Up
NO
1
DESCRIPTION
Video Processor
Multistandard Sound Processor
MICOM, TTX(MTP)
EEPROM
Audio AMP
RGB Drive AMP Hybrid IC
100Hz Horizontal Pulse AMP
Vertical IC
Horizontal Drive IC
E/W Drive IC
SPS Controllor
Bridge Diode
Photo Coupler
5V Controlled Regulator
Rectifier Diode
3.3V Regulator
6V Regulator
8V Controlled Regulator
3.3V Regulator
MICOM Reset IC
IIC Level Shifter
Main Tuner with IF Block
Sub Tuner with IF Block
Reference Information
Samsung Electronics 2-3
2-2 IC Line Up
LOC. NO
IC201S
IC601
IC901
IC902
IC602
HIC201
HIC202
HIC203
HIC204
HIC401
IC301
Q402
Q401
D414
IC401
Q404
IC801S
D801S
PC801S
IC802
D805
D806
D807
D802
IC201
IC804
IC803
IC903
IC904
Q909
Q910
TU01S
TU02S
BOARD
MAIN
SPEC
VDP3130Y
MSP3451G
SIM408AY
KS24L161
TDA7297
DRGB001
DDRI001
LA7845
KSC2073-H2
KSD5703
FMP-3FU
KA393
IRF620
3S1265R
RBV606
PC123Y
KA78R05
FML-G12S
FMG-G2CS
KA78RM33
KA7806
KA78R08
KA78RM33
KIA7025AP
2N7000
TCLN3181PA09A
TCPN3081PD09A
REMARK
Refer to Table 2-3-1
Refer to Table 2-3-2
Refer to Table 2-3-3
VM Option
Option
HC401
HC801
VDPY
Refer to Table 2-3-4
Refer to Table 2-3-5
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2-4 Samsung Electronics
Table 2 - 3 IC Line - Up
NO
2
3
4
5
DESCRIPTION
Video Output AMP R.G.B Drive
Push-Pull (VM)
TR-Power (TILT)
OP-AMP (TILT)
OP-AMP
TR-Power
Video Switching IC with Adder Output
High-end Picture-In Picture IC
3.3V Regulator
LOC. NO
IC501
IC502
IC503
QF04
QF05
QG02
QG03
ICG01
ICH01
QH01
ICS01
ICP01
ICP02
SPEC
TDA6111Q
2SC2344
2SA1011
KSA940
KSD2073-H2
KA4558
KA4558
2SC4636RB
TEA6425
SDA9388X
EZ1086CM
REMARK
Option
Option
Option
Option
BOARD
CRT
DOUBLE
FOCUS
V-S/W
PIP
Reference Information
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Reference Information
Samsung Electronics 2-5
SPEC
VDP3108B
VDP3112B
VDP3120B
VDP3130Y
VDP3140D
FUNCTION
50Hz Basic
50Hz, 2H Comb Filtr
50Hz, 2H Comb Filter, Horizontal Scaler
50Hz, 2H Comb Filter, DVD Input
100Hz
REMARK
Table 2-3-1 VIDEO IC (IC201S)
SPEC
MSP3400D
MSP3410D
MSP3411G
MSP3440G
MSP3451G
FUNCTION
Multistandard, A2 Stereo
Multistandard, A2 Stereo, Nicam
Multistandard, A2 Stereo, Vitual Dolby
Multistandard, A2 Stereo, Vitual Dolby
Multistandard, A2 Stereo, Vitual Dolby
REMARK
SPEC
TDA7297
FUNCTION
15W x 2CH, 10W x 2CH
REMARK
SPEC
TCLN3181PA09A
TCPN3081PC09A
TCPN3081PA09A
FUNCTION
NTSC, PAL N.M, LNA Function
PAL N.M, NTSC, LNA Function
PAL N.M, NTSC, LNA Function
REMARK
Main, F-Jack
Main, Thin Jack
Main 1Tuner
SPEC
TCLN3181PD09A
TCPN3081PD09A
FUNCTION
NTSC, PAL N.M LNA Function
NTSC
REMARK
Sub
Sub
TCPS3001PD09A(S) is out-of-date, TCPS3001PD09D(S) which is up-to-date has the same function.
Table 2-3-2 SOUND IC (IC601)
Table 2-3-3 SOUND AMP (IC602)
Table 2-3-4 1’st TUNER (TU01S)
Table 2-3-5 2’nd TUNER (TU02S)
Note
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Specifications
Samsung Electronics 3-1
3. Specifications
Specifications are subject to change.
Television
System
Antena Input
Multi
Power
Consumption
Requirements
Frequency
Sound
Output
Effect
Jacks
Front
(AV2)
Back
NTSC-M, PAL N.M
160W (Applied When 29” Flat)
Free Volts(100V-240Volts)
Free Voltage
50/60Hz
15W x 2CH
10W x 2CH
5W x 2CH
Vitual Dolby
Turbo Sound
Pseudo Stereo
RCA Input
S-VHS
Head-Phone
2 AV Input
DVD Input(YPbPr)
AV2 Monitor Audio Output
S-VHS
75ohms, Coaxial Cable
Not Present R815
Option
Option
Option
Option
Option
P
Function
2 TUNER PIP
NOTE
Specifications for Model Name
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Alignment and Adjustments
Samsung Electronics 4-1
4. Alignment and Adjustments
4-1 General Alignment Instructions
1. Usually, a color TV-VCR needs only slight
touch-up adjustment upon installation. Check
the basic characteristics such as height,
horizontal and vertical sync and focus.
2. Observe the picture for good black and white
details. There should be objectionable color
shading; if color shading is present,
demagnetize, perform purity and convergence
adjustments described below.
3. Use the specified test equipment or its
equivalent.
4. Correct impedance matching is essential.
5. Avoid overload. Excessive signal from a
sweep generator might overload the front-end
of the TV. When inserting signal markers, do
not allow the marker generator to distort test
results.
6. Connect the TV only to an AC power source
with voltage and frequency as specified on the
backcover nameplate.
7. Do not attempt to connect or disconnect any
wires while the TV is turned on. Make sure
that the power cord is disconnected before
replacing any parts.
8. To protect against shock hazard, use an
isolation transformer.
4-2 Automatic Degaussing
A degaussing coil is mounted around the
picture tube, so that external degaussing after
moving the TV should be unnecessary. But
the receiver must be properly degaussed upon
installation.
The degaussing coil operates for about 1
second after the power is switched ON. If the
set is moved or turned in a different direction,
the power should be OFF for at least 10
minutes.
If the chassis or parts of the cabinet become
magnetized, poor color purity will result. If
this happens, use an external degaussing coil.
Slowly move the degaussing coil around the
faceplate of the picture tube and the sides and
front of the receiver. Slowly withdraw the coil
to a distance of about 6 feet before turning
power OFF.
If color shading persists, perform the
following Color purity and Convergence
adjustments.
4-3 High voltage Check
CAUTION : There is no high voltage adjustment
on this chassis. The B+ power supply should be
+135 volts (with full color- bar input and normal
picture level).
1. Connect a digital voltmeter to the second
anode of the picture tube.
2. Turn on the TV. Set the Brightness and
Contrast controls to minimum (zero beam
current).
3. Adjust the Brightness and contrast controls to
both extremes. Ensure that the high voltage
does not exceed 32 KV under any conditions.
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Alignment and Adjustments
4-2 Samsung Electronics
4-5 SCREEN Adjustment
1. Input Toshiba Pattern
2. Enter “Service Mode”.(Refer to “Service Mode”)
3. Select “G2-Adjust”.
4. Set the values as below.
IBRM = 200
WDRV = 35
CDL = 200
COLR G B = 120 120 120
4-4 Dynamic Focus Adjustment
1. A dynamic focus adjustment should be done
after replacing the CRT PCB, FBT or CRT.
2. Input a crosshatch pattern.
3. Enter “ STANDARD “ in video mode.
4. Turn the Dynamic focus VR fully clockwise
(maximum).( )
5. Turn the Static focus VR fully
counterclockwise (maximum).( )
6. Slowly turn the static focus VR
counterclockwise. Adjust until the
vertical line in the middle of the screen
has maximum clarity.( )
7. Slowly turn the dynamic focus VR (clockwise)
and adjust the 3rd horizontal line for
maximum clarity.( )
8. Repeat 4-7, if necessary.
STATIC FOCUS VR
H
DYNAMIC FOCUS VR
V
SCREEN
<FBT FOCUS PACK>
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Alignment and Adjustments
Samsung Electronics 4-3
5. Turn the SCREEN VR until “MRCR G B” and “MRWDG” are green and those value are about 100.
(The incorrect SCREEN Voltage may result that “MRCR G B” and “MRWDG” should be red)
When you do not have Toshiba Pattern, follow this method.
1. Set the TV on the condition that AV mode no signal(black)
2. Enter the “Menu” and set the mode to blue screen off.
3. Enter the “Service Mode”.
4. Select “ G2-Adjust”.
5. Set the values as below.
IBRM = 200
WDRV = 35
CDL = 200
COLR G B = 120 120 120
6. Turn the SCREEN VR until the value of “ MRCR G B” is about 120. Do not mind that
the “OSD” Color is red.
■ After completing G2-Adjust, follow this procedure.
① Enter the “Video Adjust 1”.
➁ Choose any item in menu. (ex. Select “Red Cutoff”)
➂ Change the value of item you select, and recover the value.
For example, when the value of “Red Cutoff” is 127, change the value to 128 and restore
the value to 127.
If you do not follow this procedure, the picture may be abnormal.
For example, when the TV set is on, the picture becames brighter gradually.
Note 1.
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Alignment and Adjustments
4-4 Samsung Electronics
4-6 E2PROM (IC902) Replacement
1. When IC902 is replaced, all adjustment data revert to the initial values.
So, all adjustment values when servicing should be readjusted.
2. After IC902 is replaced, connect the AC power supply cord.
3. Turn the power switch ON.
4. In stand-by, warm up the TV for at least 10 seconds.
5. Power on the TV.
4-7 White Balance Adjustment
■ Equipment : Color-Analyzer (CA-100)
■ Input Signal : Pattern signal (Toshiba pattern)
1. Select STANDARD from the menu.
2. Input an 100% White pattern.
3. Enter the “Service Mode”. (Refer to “4-8 Service Mode”)
4. Warm up the TV set at least for 30 minutes.
5. Input a Toshiba pattern signal.
6. Enter the “Video Adjust1”.
- Adjust “Sub Contrast” so that Y (luminance) becomes 50 ft ± 3.
- Use “Red Drive” and “ Blue Drive” to adjust High-Light (x : 275, y : 295)
- Adjust “Sub Bright” so that Y (luminance) becomes 1.5ft ± 0.3.
- Use “Red Cutoff” and “Blue Cutoff” to adjust Low-Light (x : 275, y : 295).
7. Adjust CA-100 so that the final adjustment value can be fixed.
8. Use the Channel Up/Down (▲/▼) buttons to move the cursor on the adjustment modes.
9. Use the Volume +/- buttons to change the adjustment value.
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg12.png)
Alignment and Adjustments
Samsung Electronics 4-5
4-8 Factory Adjustment
1. To enter the “Service Mode”, Press the remote-control keys in this sequence :
- If you do not have Factory remote-control
- If you have Factory remote-control
2. After the Service Mode is entered, the initial screen is as shown in the figure below.
3. Use the Channel Up/Down buttons to move the cursor in the adjustment parameters.
- When CRT, CRT PCB, FBT, E
2
PROM (sometimes MICOM) is replaced, the adjustment values
should be controlled.
- After the Service adjustment is completed, Do not select “Reset” in the service mode menu.
(After above procedure is done, power is on initially and the “Plug and Play” will be operated.)
4-8-1 Service Mode
*
These hexa digits are check sum value which
depends on the MICOM.
If check sum value is changed, the value of
E
2
PROM Data newly initialed.
Note 2.
- When E2PROM (IC902) and Micom are replaced at the same time :
1. After the Factory Mode is entered, check the VDP version in the service list.
2. Set the version so that the VDP version is identical with the video chip (IC201S)
3. After all settings are completed, adjust the service value of each mode to its default.
4. Refer to “Service Manual” for factory value.
5. Check the version
a. Check the VDP version “Y” in the Factory Mode.
b. Version Mode : “Y”, “B” from IC201S(Video Chip) VDD3130”Y”
VDD3112”B”, VDD3108”B”
Note 3.
PICTURE OFF PICTURE ON
MUTE
Keys Number
1,8,2
PICTURE ON
DISPLAY
()
FACTORY
Service
Deflection
Video Adjust 1
Video Adjust 2
Video Adjust 3
Option
Reset
G2-Adjust
Others
VDP Verision : Y
*
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg13.png)
Alignment and Adjustments
4-6 Samsung Electronics
4-8-2 Memory Data
4-8-2(A) DEFLECTION (GEOMETRIC ADJUSTMENT VALUE)
DEFLECTION
H Bow 0 Fixed 0 00000
H Angle 0 Adjustment 0 0 10 0 0 0
H DSCC 1 Fixed 1 13313
V SHIFT -40 Adjustment -18 -27
V AMP 5 Adjustment 18 -17
V SLOPE -2 Adjustment -4 -3
V SC -7 Fixed -13 -13 -17 0 -13 0
H EW 64 Adjustment 24 71
H TRAPEZIUM -20 Adjustment 20 -50
H PARABOLA -13 Adjustment 17 10
H SYMMETRY 13 Fixed 13 13 13 13 13 13
H CORNER 15 Adjustment 69 -13
H SHIFT 4 13 20
PIP CONTRAST 15 Fixed - - 15 10 - 10
PIP TINT 0 Fixed - - 0 0 - 0
PIP PAL V.POS 12 Fixed - - 12 12 - 12
PIP NTSC V.POS 10 Fixed - - 10 10 - 10
PIP H.POS 15 Fixed - - 15 15 - 15
Initial
Value
Adjustment
Value
SAM2540
SAM2740
TXK3276 CL29A6 TXK3279 TXK3676 TXK3679
-55 -51 -27 -51
0 -35 -17 -35
0-2-3-2
45 49 71 49
-50 -30 -50 -30
-5 18 10 18
25 -34 -13 -34
-20 -6 20 -6
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg14.png)
Alignment and Adjustments
Samsung Electronics 4-7
4-8-2(B) SCREEN CHANGE (I2C BUS GEOMETRIC ADJUSTMENT)
1 V Shift
V Slope
2
3 H EW
6 V Amp
V SC
7
8
H Trapizium
4 H Parabola
5 H Corner
9
10
H Shift
H Symmetry
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg15.png)
Alignment and Adjustments
4-8 Samsung Electronics
4-8-2(C) VIDEO ADJUST 1
Table 1. YC Delay Adjustment Table
N.YC
Delay
Value
Def.
4
Beam Control Limit Characteristic
Note 3.
M
3
NTSC
The “Def.” means that TV is in AV
mode.
✐
VIDEO ADJUST1
RED CUT OFF 127 Adjustment 127 127 127 127 127 127
GREEN CUT OFF 127 Fixed 127 127 127 127 127 127
BLUE CUT OFF 127 Adjustment 127 127 127 127 127 127
RED DRIVE 127 Adjustment 127 127 127 127 127 127
GREEN DRIVE 127 Fixed 127 127 127 127 127 127
BLUE DRIVE 127 Adjustment 127 127 127 127 127 127
SUB BRIGHT 110 Adjustment 100 100 100 100 100 100
SUB CONTRAST 52 Adjustment 52 52 52 52 52 52
SUB COLOR 27 Fixed 50 50 50 50 50 50
SUB TINT 30 Fixed 70 70 40 70 70 70
BCL THRESHOLD 62 Fixed 58 58 65 60 58 60
BCLGAIN 8 Fixed 8 88989
BCL TIME 13 Fixed 10 10 6 5 10 5
DVD SUBTint Fixed 25 25 25
N. YC DELAY 0 3 33333
beam
Initial
Value
Adjustment
Value
SAM2540
SAM2740
TXK3276 CL29A6 TXK3279 TXK3676 TXK3679
50
IRE
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg16.png)
Alignment and Adjustments
Samsung Electronics 4-9
Coring : The Value of Center Frequency for the active bandwidth.
4-8-2(D) VIDEO 2 ADJUST
✐
VIDEO ADJUST2
B STRETCH-BTHR 50 Fixed 50 50 50 50 50 50
B DTRETCH- BTLT 8 Fixed 8 88888
B STERTCH-BAM 4 Fixed 4 44444
CORING 31 Fixed 31 31 31 31 31 31
NTSC COMB FILTER 1 1 13313
RGB BRIGHT 0 Fixed 0 45
RG B CONTRAST 0 Fixed 0 15 0 15 15 15
EHT TIME 0 Fixed 0 03808
EHT COMPENSATION 60 Fixed 60 60 60 60 60 60
DTI CORING Fixed 0 00000
DTI GAIN Fixed 1 11111
DTI BAND Fixed 1 11111
EHT Offset 0 Fixed - - 0 0 - 0
EHT Horizontal 0 Fixed - - 0 0 - 0
Initial Adjustment
Value Value
SAM2540
SAM2740
TXK3276 CL29A6 TXK3279 TXK3676 TXK3679
0 45 45 45
VIDEO ADJUST3
PEAK Threshold 255 Fixed 255 255 255 255 255 255
SOFT LIMI T SLOPE B 4 Fixed 4 44444
HARD LIMIT 255 Fixed 255 255 255 255 255 255
MODULATION ON/OFF 0 Fixed 0 00000
A TILT POINT 0 Fixed 0 00000
B TILT POINT 0 Fixed 114 114 114 114 114 114
GAIN 1 (VIDEO) Fixed 11 31
DELAY 1 (VIDEO) Fixed 3 33333
PEAK VIDEO REF Fixed 0 00000
PEAK VIDEO GAIN Fixed 0 00000
LIMIT VALUE Fixed 74 74 127 74 74 74
VELOCITY DELAY Fixed 7 77777
VELOCITY CORING Fixed 10 10 2 10 10 10
ACC-REF 20 Fixed 20 20 20 20 20 20
ACCR 21 Fixed 21 21 21 21 21 21
Initial Adjustment
Value Value
SAM2540
SAM2740
TXK3276 CL29A6 TXK3279 TXK3676 TXK3679
31 31 31 31
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg17.png)
4-8-2(F) OPTION
Alignment and Adjustments
4-10 Samsung Electronics
“Soft Limit” is that Limitting
the peak white without
feed-back, but “Peak Limit” is
that with feed-back for white
peak level
✐
Soft Limit & Hard Limit
Note 5.
V-DOLBY
MSP3451G, MSP3440GB6
Note 6.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Model
Description
SYSTEM
ACS(CT, CTA)
SOUND
CRT
AV MODE(V,Y)
AUDIO MUTE
X-RAY
VIDEO-MUTE
TILT CONTROL
GAME+DEMO(CN)
LNA
PIP
VCHIP(CT,CTA)
BLUE SCREEN
AKB
AUTO POWER ON
HOTEL
Option Byte
CL29A6
Initial Value
CN(EN+SP+PO)
OFF
VIRTUAL DOLBY
4:3
2RCA + S + D
ON
OFF
ON
ON
ON
ON
2-TUNER
OFF
ON
ON
OFF
OFF
04 DE 12 1C
SAM2540
SAM2740
Initial Value
CT(EN+SP+FR)
ON
STEREO
4:3
1RCA
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
-
01 01 80 09
TXK3276
TXK3676
Initial Value
CT(EN+SP+FR)
ON
STEREO
4:3
2RCA +S
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
-
01 01 88 09
TXK3279
TXK3679
Initial Value
CT(EN+SP+FR)
ON
VIRTUAL DOLBY
4:3
2RCA +S+D
ON
ON
OFF
OFF
OFF
OFF
2-TUNER
ON
OFF
OFF
OFF
-
04 01 92 09
TXK3279
TXK3679
Initial Value
CT(EN+SP+FR)
OFF
VIRTUAL DOLBY
4:3
2RCA +S+D
ON
ON
ON
ON
OFF
ON
2-TUNER
OFF
ON
ON
OFF
OFF
Output
511
400
300
200
100
0
0
tilt 1 [0...511]
100 200 300 400 500 600 700 800 900 1023
Part 1 Part 2
Slope 1 [0...15]
10
12
14
0
2
4
6
8
tilt 2 [0...511]
0
2
4
6
8
10
12
14
Slope 2 [0...15]
Hard limiter
range=256...511
Li
Soft Limit Slope B
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg18.png)
Alignment and Adjustments
Samsung Electronics 4-11
4-8-2(G) OTHERS
OTHERS
VSU 108 105 105
VSU2 0 00000
H QEW 0 0 0000
H ZOOM Parabola 8 8 8 12 12
H 16:9 Parabola -10 -18 -18 -19 -19
DVD Tint Control 0 0 0110
PAL V S HIFT -29 -29 -66 -62 -29 -20
PAL H SHIFT 18 18 -15 -1 18 -3
Melidy Volume 5 7 77777
PIP BRIGHT 3 5 5
PIP COLOR 7 7 7
Initial Adjustment
Value Value
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
SAM2540
SAM2740
TXK3276 CL29A6 TXK3279 TXK3676 TXK3679
98 108 105 108
0
0
0
0
0
0
G2 Adjust
MRC R G B
MRWDG
IBRM -10 FIX 200 195
WDRV 0 FIX 35 35 35 35 35 35
CDL FIX 150 170
COL FIX 130 130 120 130 130 130
VDP Version B B Y Y B Y
WHITE BALANCE
Initial
Value
Adjustment
Value
H
L 275,295,1.2 275,295,1.0 275,295,1.5 275,295,1.0 275,295,1.0 275,295,1.0
SAM2540
SAM2740
275,295,35 275,295,28 275,295,50 275,295,28 275,295,28 275,295,28
TXK3276 CL29A6 TXK3279 TXK3676 TXK3679
200 195 195 195
200 170 170 170
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg19.png)
4-9-1 Pin Layout
Alignment and Adjustments
4-12 Samsung Electronics
4-9 MICOM
Write Protect
EEPROM SDA
EEPROM SCL
Bus-Stop
Main SDA
Main SCL
Sound Reset
Video Reset
VDD 2.5V
GND
VDD 3.3V
CVBS Input
VDD 2.5V
GND
AFT
AV1 Ident
AV2 Ident
Key 1
H-Sync
V-Sync
Key 3
Key 2
X-Ray Protect
IR Input
Stand-By LED
Time LED
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
I/O
I/O
IO
I/O
I/O
I/O
I/O
I/O
ADC
ADC
ADC
ADC
I/O
I/O
I/O
I/O
I/O
I/O
S
I
M
4
0
8
A
Y
PWM
I/O
I/O
I/O
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
Tilt
N.C.
Power
Sound Mute
N.C.
N.C.
PX. Y
PX. Y
VDD 3.3V
GND
VDD 2.5V
CORE
OSD-B
OSD-G
OSD-R
VDD 2.5V
GND
X-TAL Out
X-TAL In
MICOM Reset
N.C.
N.C.
VDD 3.3V
GND
N.C.
Relay
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg1a.png)
Alignment and Adjustments
Samsung Electronics 4-13
4-9-2 Pin Assignment Specification
DESCRIPTION
EEPROM Write Protection
EEPROM Serial Data Line
EEPROM Serial Clock Line
Disable Micom IIC
Peripheral IC Serial Data Line
Peripheral IC Serial Clock Line
MSP IC Initial Control
VDP IC Initial Control
TTX CVBS Input
Analog B+
Analog Ground
Auto Fine Tuning Control
AV1 Ident
AV2 Ident
Key1 Input
Horizontal Sync Input
Vertical Sync Input
Key3 Input
Key2 Input
X-Ray Protection
Remocon Signal Input
LED Drive Output(Red)
LED Drive Output(Green)
PIN NO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
FUNCTION
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Vdd
GND
Vdd
CVBS
Vdd
GND
ADC
ADC
ADC
ADC
HS
VS
I/O
I/O
I/O
I/O
I/O
I/O
ASSIGN
Write Protect
ROM SDA
ROM SCL
Bus Stop
Main SDA
Main SCL
Sound Reset
Video Reset
VDD 2.5V
VDD 3.3V
CVBS Input
VDD 2.5V
AFT
AV1-ID
AV2-ID
Key1
H-Sync
V-Sync
Key3
Key2
X-Ray
IR-In
STD-LED
TIM-LED
IN/OUT
Out
I/O
I/O
In
I/O
I/O
Out
Out
In
In
In
In
In
In
In
In
In
In
In
Out
Out
ACTIVE H/L
Low
Low
Low
Low
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg1b.png)
Alignment and Adjustments
4-14 Samsung Electronics
4-9-2 Pin Assignment Specification (Continued)
PIN NO
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
FUNCTION
I/O
N.C.
GND
Vdd
N.C.
N.C.
Reset
X-In
X-Out
GND
Vdd
R
G
B
COR
Vdd
GND
Vdd
I/O
I/O
N.C.
N.C.
I/O
I/O
N.C.
I/O
ASSIGN
Relay
VDD 3.3V
Reset
X-TAL In
X-TAL Out
VDD 2.5V
OSD-R
OSD-G
OSD-B
CORE
VDD 2.5V
VDD 3.3V
PX.Y
PX.Y
S-Mute
Power
Tilt
IN/OUT
Out
In
In
Out
Out
Out
Out
Out
In
Out
Out
Out
Out
ACTIVE H/L
Low
Low
6MHz
6MHz
High
Low
PWM
DESCRIPTION
Activate Degausssing Coil
Not Used (Programmed Gound Level)
Analog Ground
Not Used (Programmed Gound Level)
Not Used (Programmed Gound Level)
Micom Hardware Reset
Crystal Oscillation Input
Crystal Oscillation Output
Analog Ground
Analog B+
OSD/Caption Output (Red)
OSD/Caption Output (Green)
OSD/Caption Output (Blue)
Fast Blank/Half Contrast Output
When The Caption Function Adopted, Used.
Not Used (Programmed Gound Level)
Sound Amp Mute
Picture On/Off Control
Not Used (Programmed Gound Level)
Tilt Control Output
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg1c.png)
Troubleshooting
Samsung Electronics 5-1
5. Troubleshooting
5-1 No Power
Normal
Check and Replace
the MICOM
IC903
Check and Replace
Replace
D801 or D811
IC804
Check and Replace
R828 or D805
Check and Replace
OFF
Check
LED lamp
Plug in Power Cord
ON
Check
Input Voltage
IC901 MICOM
Normal
Abnormal
Check
Normal
Abnormal
Input Voltage
IC903 3.3V Regulator
Replace
Abnormal
Check
the MICOM Power #59
Normal
the MICOM
With Remote Controller
Normal
Abnormal
Check
D801 and D811
Replace Q908
Abnormal
Q908
Replace
Normal
Normal
Normal
Abnormal
Check
IC804 Input Voltage
Replace
IC802, IC803
Abnormal
Check
IC802, IC803
Normal
Check
Normal
Abnormal
R828 and D805
IC201S
Replace
Abnormal
Check
H-OUT #50
IC201S VDP
Check
IC801S and FP801S
Q401
Replace
Abnormal
Normal
Check
Q401 H-TR
Normal
Check
PC801S, IC801S
Abnormal
Check
135V Line
Normal
FBT
Replace
Check
MICOM IIC #5, #6
Abnormal
Check
Level Shifter Q909, Q910
Abnormal
Replace
Q909, Q910
Abnormal
Component over 0.7V, it is broken)
Output(If 2N7000 Output has the DC
Check
MICOM
Normal
IIC #2, #3
Normal
Replace
EEPROM(IC902)
Check
IC902 EEPROM
Normal
Note : When you check whether any component is normal, you must let the output pin be open in order not to be affected by the side of output.
Check IC201S
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg1d.png)
5-2 No Picture
Troubleshooting
5-2 Samsung Electronics
200V, 16.5V Line
Check
Replace IC201S
Tuner CVBS Output
Check
Check CRT and FBT
Normal
Check CRT and FBT
Normal
IC201S #63
or #59
Check
Normal
Abnormal
Heater Voltage
Check
Abnormal
HIC202, HIC203,
HIC204 Output
Check
Abnormal
Normal
CRT PCB RK, BK, GK
Check
Abnormal
flyback signal is appeared)
Normal
Turn the VR of FBT, higher screen
voltage and Check the Deflection
is in Normal Operation
(If the deflection is in operation,
No Picture, but sound is
in normal operation
Check
IC301
Replace
IC201S
Check
IC803
Replace
DZ202
Normal
Normal
Check 8V Check DZ202
Abnormal Abnormal
Normal
IC201S #31
Check
Abnormal
Abnormal
![](/html/0a/0abe/0abe1aa01d031bd49eaebfc75532297df4a50bfeb01128ba4f7326045a4d0fe1/bg1e.png)
Troubleshooting
Samsung Electronics 5-3
5-3 No Sound
No Sound, but Picture is
in normal operation
Normal
Check the Speaker
Wire Connection
Check the CN602
Connection and Signal
(If the pin is in low state,
Normal
Check
IC602 #7
Sound is mute)
Normal
Check
IC601 #24, #25
Normal
Check
IC601 Input
Voltages (5V,8V)
Abnormal
Check
14V Line
D816, Q906
Abnormal
Check
Abnormal
Replace
IC602
Abnormal
Abnormal
Check
FA803S
Normal
Check
the coils around IC601
Check
IC601 Input Signal
Normal
Replace
IC601
Abnormal
Check
the Tuner