SAMSUNG CFT27908X-SMS, CFT27918X-SMS, CL29K3W8X-GSU, CL29M6P8X-STR, CL29M6P8X-XAX Service Manual

...

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

10.

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)

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

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

Table 2 - 3 IC Line - Up

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

2-4 Samsung Electronics

Table 2 - 3 IC Line - Up

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

BOARD

CRT

DOUBLE FOCUS

V-S/W

PIP

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

2-6 Samsung Electronics

MEMO

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

Function

2 TUNER PIP

NOTE

Specifications for Model Name

3-2 Samsung Electronics

MEMO

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.

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.

❷

❶

❷

❶

❷

❶

❷

❶

STATIC FOCUS VR

DYNAMIC FOCUS VR

SCREEN

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.

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.

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

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

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

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

Alignment and Adjustments

Samsung Electronics 4-7

4-8-2(B) SCREEN CHANGE (I2C BUS GEOMETRIC ADJUSTMENT)

1 V Shift

V Slope

3 H EW

6 V Amp

V SC

H Trapizium

4 H Parabola

5 H Corner

H Shift

H Symmetry

Alignment and Adjustments

4-8 Samsung Electronics

4-8-2(C) VIDEO ADJUST 1

WDRGB

BCL THESHOLD

1.8mA

1.6mA

MIN

BCL GAIN

MAX

Table 1. YC Delay Adjustment Table

N.YC

Delay

Value

Def.

Beam Control Limit Characteristic

Note 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

IRE

Alignment and Adjustments

Samsung Electronics 4-9

Coring : The Value of Center Frequency for the active bandwidth.

4-8-2(D) VIDEO 2 ADJUST

✐

4-8-2(E) VIDEO 3 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

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

OFF

ON ON

2-TUNER

OFF

ON ON

OFF OFF

04 DE 12 1C

SAM2540 SAM2740

Initial Value

CT(EN+SP+FR)

STEREO

4:3

1RCA

ON OFF OFF

OFF OFF OFF

ON OFF

OFF OFF

01 01 80 09

TXK3276 TXK3676

Initial Value

CT(EN+SP+FR)

STEREO

4:3

2RCA +S

ON OFF OFF

OFF OFF OFF

ON OFF

OFF OFF

01 01 88 09

TXK3279 TXK3679

Initial Value

CT(EN+SP+FR)

VIRTUAL DOLBY

4:3

2RCA +S+D

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

2-TUNER

OFF

ON OFF OFF

Output

511

400

300

200

100

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

12 14

Slope 2 [0...15]

Hard limiter

range=256...511

Soft Limit Slope B

Alignment and Adjustments

Samsung Electronics 4-11

4-8-2(G) OTHERS

4-8-2(G) G2 ADJUST

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

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

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

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

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

9 10 11 12 13 14 15

16 17 18 19 20

21 22 23

24 25

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 Out Out

ACTIVE H/L

Low

Low Low

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

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

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

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

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

Check 8V Check DZ202

Abnormal Abnormal

Normal

IC201S #31

Check

Abnormal

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

Check

FA803S

Normal

Check

the coils around IC601

Check

IC601 Input Signal

Normal

Replace

IC601

Abnormal

Check

the Tuner

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