Samsung PLK405WX-XAC, SLK407WX-XAC Service Manual

LCD PROJECTION TELEVISION

Chassis : L56A Model : PLK405WX/XAC

SLK407WX/XAC

LCD PROJECTION TELEVISION CONTENTS

Precautions

Reference Information

Specifications

Disassembly and Reassembly

Alignment and Adjustments

Troubleshooting

Exploded View and Parts List

Electrical Parts List

Block Diagram

Wiring Diagram

Schematic Diagrams

10.

11.

ELECTRONICS

Printed in Korea

3L56A-4020

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.

9. When some parts inside the optical engine (except lamp) are damaged, replace the whole optical engine.

Precautions

Samsung Electronics 1-3

Warning 1 : 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.

Warning 2 : 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 Abbreviations

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

H001 AA40-10005R TUNER, TECC1070PG30A(S) SEMCO H002 AA40-10005U TUNER, TCPN9082PC27A(S) SEMCO IC601 AA96-50367A ASSY-H/S SOUND AMP TDA7265 PHILIPS

MAIN IC902 1103-000128 24C02, EEPROM ATMEC

IC905 0904-001121 PCF8574P, I/O EXPANDER PHILIPS REL601 3501-000332 Relay-Power OMRON X901 2801-0003120 CRYSTAL, 8.388Mhz KONY

IF IC101 1204-001435 IC-IF SYSTEM, LA7565B, DIP SANYO

MTS

H009 AA59-40003Q MODULE-MTS (MZ-202) IC101 1204-001204 IC-DECODER,TDA9850,DIP,32P PHILIPS

3D-COMB IC01 1204-001556 C-SEPARATION, UPD64082GF NEC

IC02 1105-001172 IC-DRAM, 416C1204 SAMSUNG IC04 1203-001419 IC-VOLTAGE REGULATOR, 4931 SGS

FD00,01,03 2909-001051 FILTER-LC, 6Mhz TOKO FD02 2909-001052 FILTER-LC, 3.58Mhz TOKO

XTAL01 2801-000199 CRYSTAL-UNIT, 20Mhz PIP & ICT00 1203-001419 IC-VOLTAGE REGULATOR, 4931 CAPTION ICT01 1204-001668 IC-PICTURE PROCESS, SDA9488X SIEMENS

ICT02 1001-001083 IC-VIDEO SWITCH, NJM2248D JRC

ICT03 1001-001083 IC-VIDEO SWITCH, NJM2248D JRC

ICT04 1204-001388 IC-DECODER, Z86129 Zilog

ICT05 1204-001610 IC-DECODER, Z86130 Zilog

XT00 2801-003432 CRYSTAL-UNIT, 20.25Mhz

Reference Information

Samsung Electronics 2-3

2-2 IC Line Up

Table 2 - 3 IC Line - Up

Assy

Component RemarksDescriptionLoc.No.

Reference Information

2-4 Samsung Electronics

ICP101 1204-001362 IC-VIDEO PROCESS, VPC3215C ITT ICP103 1205-001172 IC-INTERFACE, CIP3250A ITT ICP301 1204-001623 IC-VERTICAL PROCESSOR, SDA9400 SIEMENS ICP302 1203-001419 IC-VOLTAGE REGULATOR, 4931

PROSCAN ICP401 1002-001045 IC-D/A CONVERTER, SDA9280 SIEMENS

ICP501 1204-001550 IC-VIDEO PROCESS, CXA2101AQ SONY ICP601 1204-001372 IC-HOR./VER.PROCESSOR, SDA9361 SIEMENS ICP901 1202-000001 IC-VOLTAGE COMP., 7533 XP101 2801-003432 CRYSTAL-UNIT, 20.25Mhz XP601 2801-003811 CRYSTAL-UNIT, 24.576Mhz ICL104,9 0801-000901 74HC04D PHILIPS ICL106,7,8 1201-001083 CXA1211M SONY

LCD-CTRL ICL201,2,3 1002-000134 TDA8444 PHILIPS

ICL204 1003-001094 CXA1853Q SONY ICL205 1003-001093 CXA2504N SONY ICL301 1003-001095 CXD2443Q SONY

POWER

IC801 AA96-50366C ASSY-H/S, STR83145 SANKEN IC802 AA98-50366B ASSY-H/S, STR-6709 SANKEN

Table 2 - 3 IC Line - Up (Continued)

Assy

Component RemarksDescriptionLoc.No.

Specifications

Samsung Electronics 3-1

3. Specifications

MODEL

TUNING

SYSTEM COLOUR

SOUND ANTENNA IMPEDANCE SCREEN SIZE

CONSUMPTION POWER REQUIREMENTS

FREQUENCY

TUNING RANGE

SOUND OUTPUT

DIMENSIONS SET

PLH403W / PLK405W / SLK407W

Frequency Synthesizer NTSC 3.58 Stereo System 75 ohm Unbalanced Coaxial

101.6 cm 170 Watts Input : 120V 60 Hz VHF CH : 2 ~13

UHF CH : 14 ~ 69 CATV CH : 1, 14 ~ 125

13 Watts/CH x 2 1012 x 349 x 736mm

(W x D x H) TRANSMITTER

WEIGHT SET

TRANSMITTER

Specifications are subject to change.

60 x 18 x 227mm 27 Kg 152g (Including Batteries)

3-2 Samsung Electronics

MEMO

Disassembly and Reassembly

Samsung Electronics 4-1

4. Disassembly and Reassembly

4-1 Back Cover Removal

1. After removing the 16 screws, pull the bottom part of the cabinet backwards.

2. Loosen the 4 screws and remove the supporter.

4. Loosen the 2 screws. Remove the optical meter.

3. After loosening the 4 screws, remove the lens cover and fan duct.

5. Loosen the 2 screws. Remove the stabilizer.

Disassembly and Reassembly

4-2 Samsung Electronics

6. After loosening the 2 screws, remove the chassis holder and power mounting.

7. After removing the 6 screws, pull the top cabinet backwards.

Disassembly and Reassembly

Samsung Electronics 4-3

4-2 Lamp Replacement

1. Loosen the screw.

3. Using a hexagonal wrench, loosen the two screws that secure the lamp.

2. Remove the cover.

4. Pull out the lamp.

5. PROCEDURE

After completing the lamp replacement, enter the Service Mode (use a remote control).

(1) Select the 84 (lamp life) with using the

volume DOWN key (See the figure below).

(2) Press the Mute key to reset the lamp life

(“0000”).

(3) Press the ADD key to exit.

LAMP

84 lamp life 0000

Disassembly and Reassembly

4-4 Samsung Electronics

4-2-1 Lamp (bulb only) Replacement

1. Loosen the two screws.

3. After loosening the two brackets, remove the lamp-holder and wires.

2. Remove the lamp-bracket from the lamp assembly.

4. After loosening one screw and one nut, remove the bulb.

Disassembly and Reassembly

Samsung Electronics 4-5

4-3 Air Filter Check

2. Remove the cover.

3. After removing the holder and filter from the cover, clean the filter.

1. Loosen the screw.

FILTER

Disassembly and Reassembly

4-6 Samsung Electronics

4-4 Liquid Crystal Panel Replacement

1. After removing the 16 screws, pull the cabinet backwards.

3. After loosening the 4 screws, remove the lens cover and fan duct.

5. Remove the GUIDE from the FPC-Connector.

2. Loosen the 3 screws. Remove the supporter.

4. Loosen the 2 screws. Remove the optical meter.

6. Remove FPC cable from the FPC-Connector.

Disassembly and Reassembly

Samsung Electronics 4-7

7. Loosen the 4 screws and remove the PCB-LCD.

9. Lift the LCD in the direction of arrow.

8. Using a hexagonal wrench, loosen the two screws.

Disassembly and Reassembly

4-8 Samsung Electronics

4-5 Speaker Removal

1. Loosen the 4 screws and remove the speaker holders.

Alignment and Adjustments

Samsung Electronics 5-1

5. Alignment and Adjustments

5-1 Lens and Mirror Cleaning

1. Mix the alcohol and ethyl in appropriate proportions.

2. Use a clean cotton cloth or a cleaning paper.

3. Clean the top of the lens by turning it as shown. The pattern starts at the center and proceeds outward, as shown below:

4. Use minimal pressure when rubbing the mirror. Otherwise, the surface will be damaged.

5-2 Focus Adjustment for projection Lens

1. Loosen the 4 screws that secure the optical assembly.

2. After setting the optical assembly on the front cabinet, secure the unit temporarily using the two screws.

3. After applying the liquid crystal panel signal, input a lion head pattern from a pattern generator.

4. Move the focus adjustment screws right and left until the liquid crystal picture element is clearly displayed on the screen.

5. Reposition the optical assembly, and fasten all 4 screws.

6. Check the focus adjustment.

7. Repeat adjustments 1~5, if necessary.

FIG. 5-1

FOCUS SECURING SCREW

FOCUS ADJUSTMENT SCREW

FOCUS SECURING SCREW

Alignment and Adjustments

5-2 Samsung Electronics

After installing the new liquid crystal panel, make sure that the liquid crystal screen center is aligned with the screen center. If they are not aligned, make the following adjustments:

1. Using a hexagonal wrench, loosen the two screws that secure the liquid crystal panel.

Note: Loosen the screws just until the panel can move easily.

2. Using two fingers, lift the liquid crystal upward. (The screen moves downward.)

3. When moving the liquid crystal panel towards the left, the screen moves right (and vice versa).

5. Repeat adjustments 2~4 until the screen center is aligned vertically and horizontally.

6. Using a hexagonal wrench, refasten the two screws.

5-3 Liquid Crystal Screen Center Adjustment

FIG. 5-2

HEXAGONAL SCREW (FOR SECURING LIQUID CRYSTAL PANEL)

Alignment and Adjustments

Samsung Electronics 5-3

5-4 Side Panel Controls

5-4-1 Rear Panel Jacks

SLK407WX/XAA

PLK405WX/XAA, PLH403W3X/XAA, PLH403W3SX/XAA

LED LIGHT

SIDE PANEL CONTROLS

(THE OPERATION PANEL OPENS

OUTWARD WHEN PRESSED)

MUTE

TV/VIDEO

CHANNEL

VOLUME

N P U

T 4

S-VHS

2 IN

TIMER/LAMP/TEMP

Channel Select Button

1. Press for the channel selection.

2. Press for the content adjustment.

Volume Button

1. Press for the volume UP/DOWN.

2. Press for content adjustment.

Sound Input Terminal (left) Sound Input Terminal (Right)

Video Input Terminal

S-Video Input Terminal

AV INPUT

V I D E O

L | A U

D I O | R

AV INPUT

V I D E

L | A U

D I

| R

VHF/UHF

EXTERNAL-SPEAKER(8‰/13W)

VHF/UHF

EXTERNAL-SPEAKER(8‰/13W)

DTV

COMPONENT

DVD

INPUT

MONITOR

OUT

DVD

INPUT

MONITOR

OUT

S-VHS

1 IN

S-VHS

1 IN

HEADPHONE

AUDIO

0 main bright 63 34 Adjusts for DC level of R,G,B signal before doing the gamma

adjustment. The greater the value, the darker it gets

1 R main bright 63 36 Adjusts for DC level of R signal before doing the gamma adjustment.

The greater the value, the darker it gets

2 B main bright 63 36 Adjusts for DC level of B signal before doing the gamma adjustment.

The greater the value, the darker it gets

3 gamma gain1 63 42 Adjusts the gain of black side on the gamma curve (R,G,B) 4 R gamma gain1 63 36 Adjusts the gain of black side on the gamma curve for R

5 B gamma gain1 63 36 Adjusts the gain of black side on the gamma curve for B 6 gamma ctrl1 63 40 Adjusts the change point of the black side on the gamma curved line

of R,G,B signal. The greater the value, the more the point moves towards black

7 R gamma ctrl1 63 36 Adjusts the change point of the black side on the gamma curve for R.

The greater the value, the more the point moves towards black

8 B gamma ctrl1 63 36 Adjusts the change point of the black side on the gamma curve for B.

The greater the value, the more the point moves towards black

9 gamma gain2 63 16 Adjusts the gain of white side on the gamma curve (R,G,B) 10 reserved 63 36 reserved for R gamma gain2 (not used) 11 B gamma gain2 63 36 Adjusts the gain of white side on the gamma curve B

12 gamma ctrl2 63 34 Adjusts the change point of the white side on the gamma curved line

of R,G,B signal. The smaller the value, the more the point moves towards white

13 reserved 63 36 reserved for R gamma ctrl2 (not used) 14 reserved 63 36 reserver for B gamma ctrl2 (not used) 15 sub contrast 63 40 Adjusts the gain of R,G,B voltage (applied to LCD) 16 R sub contrast 63 37 Adjusts the gain of R voltage (applied to LCD) 17 B sub contrast 63 42 Adjusts the gain of B voltage (applied to LCD)

18 sub bright 63 30 Adjustment for the brightness of R,G,B after doing the gamma

adjustment. No change on the gamma curve. The greater the value, the darker it gets

19 R sub bright 63 34 Adjustment for the brightness of R after doing the gamma

adjustment. The greater the value, the darker it gets

20 B sub bright 63 37 Adjustment for the brightness of B after doing the gamma

adjustment. The greater the value, the darker it gets

Alignment and Adjustments

5-4 Samsung Electronics

5-5 Service Mode Adjustments

5-5-1 LCD Interface IC (CXA1853) Adjustment

No. Item Range Initial value Description

Values to be adjusted for each set

26 lcd H pos 255 128 Determines the start location of horizontal indication by picture

element (Pixel)

27 lcd V pos 15 7 Determines the start location of vertical indication (within 1H) 28 sh position 15 7 Determines the phase of the sample/hold pulse 29 PC H pos 255 128 Determines the start location of horizontal indication by picture element

(Pixel). Used for PC RGB mode

30 PC V pos 15 7 Determines the start location of vertical indication (within 1H). Used for

PC RGB mode

31 PC sh position 15 7 Determines the phase of the sample/hold pulse. Used for PC RGB mode

Alignment and Adjustments

Samsung Electronics 5-5

21 signal center 63 14 Adjusts the DC level of video signals (applied to LCD). Set the signal

center to 7V

22 common control 63 30 Adjusts the common voltage (applied to LCD) 23 white limit 63 32 Adjusts the limiter voltage of white peak of R,G,B signal (applied to

LCD). The greater the value, the lower the limiter voltage becomes

24 SID ctrl 63 29 Adjusts the improvement pulse for uniformity of LCD 25 reserved 63 36 reserved

No. Item Range Initial value Description

5-5-1 LCD Interface IC (CXA1853) Adjustment (Continued)

No. Item Range Initial value Description

5-5-2 LCD Controller (CXD2443) Adjustment

32 PC H Blank phase 63 14 Determines the phase of the H blank. Used for PC RGB mode 33 PC H Sync phase 255 0 Determines the phase of the H sync. Used for PC RGB mode

No. Item Range Initial value Description

5-5-3 Progressive Module (SDA9361) Adjustment

Alignment and Adjustments

5-6 Samsung Electronics

5-5-5 Progressive Module (SDA9280) Adjustment

5-5-6 MTS Module (TDA9850) Adjustment

5-5-4 Progressive Module (CIP3250) Adjustment

34 DVD U gain 63 41 Adjusts the gain of DVD Component U 35 DVD V gain 63 41 Adjusts the gain of DVD Component V 36 DVD Y gain 63 41 Adjusts the gain of DVD Component Y

37 DVD Y bright 255 0 Adjusts the brightness of DVD Component 38 PIP U gain 63 31 Adjusts the gain of PIP U

39 PIP V gain 63 31 Adjusts the gain of PIP V 40 PIP Y gain 63 31 Adjusts the gain of PIP Y

41 PIP Y bright 255 0 Adjusts the brightness of PIP

No. Item Range Initial value Description

42 DCTIC 255 10 Digital Color Transient Improvement 43 LFC 255 10 Luminance Feature Control

44 LPC lowpass 255 72 Luminance Peaking Control Lowpass 45 LPC highpass 255 68 Luminance Peaking Control Highpass

No. Item Range Initial value Description

46 ST 15 7 Default 47 SP 15 7 Default

48 L 15 9 Default 49 AL1 31 20 Default 50 AL2 31 10 Default

51 AL3 7 0 Default 52 ADJ 1 0 Default

No. Item Range Initial value Description

Alignment and Adjustments

Samsung Electronics 5-7

5-5-7 Progressive Module (CXA2101) Adjustment

58 sub bright 63 55 0:-13 IRE, 31:CENTER, 63:+13 IRE 59 CR offset1 15 7 Fixed value (7:0mV) 60 CB offset1 15 7 Fixed value (7:0mV) 61 sub con 15 7 Contrast gain control

(0:-1.9dB, 7:0dB, 15:+1.7dB)

62 sub col 15 7 Color gain control

(0:-2.1dB, 7:0dB, 15:+1.8dB)

63 sub hue 15 5 Hue center control

(0:-8O red, 8:CENTER, 15:+8O green)

64 CTI level 3 0 Color difference signal edge enhancement setting

(0:OFF, 1:Low, 2:Medium, 3:High)

65 RY/R 15 2 R-Y axis +(R-Y) component setting 66 RY/B 15 6 R-Y axis -(B-Y) component setting

67 GY/R 15 9 G-Y axis -(R-Y) component setting 68 GY/B 15 12 G-Y axis -(B-Y) component setting

69 OSD gain 15 15 OSD gain contrl (0:-5dB, 15:0dB) 70 gamma 15 0 Control of gamma correction amount (0:OFF, 15:MAX) 71 sub shp 3 2 Sharpness center control (0:0dB, 3:+4dB) 72 shp f0 3 2 Sharpness f0 setting

73 PRE OVER 3 3 Preshoot to overshoot ratio setting 74 LTI level 3 1 Luminance signal edge enhancement setting

(0:OFF, 1:Low, 2:Medium, 3:High)

75 D PIC 3 3 Dynamic picture (black expansion) control

(0:OFF, 1:Low, 2:Medium, 3:High)

76 LIMIT level 3 0 Limiter to cope with excessively high inputs

(0:OFF, 1:111 IRE, 2:119 IRE, 3:127 IRE)

77 DC tran 3 2 Y system DC transmission ratio setting

No. Item Range Initial value Description

Alignment and Adjustments

5-8 Samsung Electronics

5-5-8 Option

78 MPX option 1 1 MPX mode setting

1:Maintains the setting for MPX mode 0:Switch the MPX mode to Mono(using the Channel Up/Down keys)

79 Image inversion 1 0 Image inversion setting (0:OFF, 1:ON) 80 AUTO power 1 0 Auto Power On setting (0:OFF, 1;ON)

81 timer on video 1 0 Timer On Video setting (0:OFF, 1:ON) 82 DTV RGB source 1 0 DTV RGB source setting (0:YPbPr, 1:RGBHV)

83 V-CHIP OPTION 1 1 V-Chip setting (0:Non-Vchip, 1:Vchip) 84 total time 00000 Records total elapsed time (from the point where power is first applied)

Reset not possible

85 lamp life 00000 Records total elapsed time (see above)

Reset (using the Mute key) Reset is done during the set shipment Reset must be done after lamp replacement

No. Item Range Initial value Description

Alignment and Adjustments

Samsung Electronics 5-9

5-6-1 LCD Control Board PLL Adjustment (CNL06)

1. Input a color bar signal.

2. Connect RPD,FPD to an oscilloscope, and check the waveforms (1V/div, 20 µs /div).

5-6-2 Signal Center Adjustment

1. Input a 5-STEP or 7-STEP signal (COLOR OFF).

2. Connect TPL304 (G1) to an oscilloscope, and check the waveforms (2V/div,10µs /div).

5-6-3 Common Voltage Adjustment

1. Connect CNL08 (COMMON) to an oscilloscope (1V/div, 10 µsec/div).

2. Set the common control (#18) to DC 6.8V.

5-6-4 Center Convergence Adjustment

1. Input a lion head pattern from a pattern generator.

2. Adjust the LCD Horizontal/Vertical POS (#24, #25).

5-6-5 SH Position Adjustment

1. Input a lion head pattern from a pattern generator.

2. Adjust the SH position (#26) to balance the position of the sample/hold pulse.

5-6 Circuit Adjustments

RPD

FPD

Adjust so that the DC level of RPD becomes 2.5V

Adjust so that the DC level of FPD becomes 2.5V

Adjust the signal center (#19) so that the DC level of the signal center becomes 7V.

center

Alignment and Adjustments

5-10 Samsung Electronics

5-6-6 (C) ADJUSTMENTS

1. Preadjustment

- Input a 10-Step Gray-Scale Pattern.

- Enter the Factory Mode by pressing the TV/VIDEO on the remote control.

2. Sub-bright Adjustment : Adjust so that the value of luminance of the probe

➁

meets the reference coordinate table.

3. Middle White Adjustment : Adjust the factory value of r sub bright, b sub bright so that the value of the probe

➁ meets the reference coordinate table.

4. High White Adjustment : Adjust the factory value of r sub contrast, b sub contrast so that the probe

➂ meets the reference coordinate table.

5. Low White Adjustment : Adjust the factory value of

γ ctrl1 so that the value

of luminance of the probe

① meets the reference coordinate table.

6. Low White Adjustment : Adjust the factory value of r

γ ctrl1, b γ ctrl1 so that the

value of the probe

① meets the reference coordinate table.

7. Check that the measurement value of the probe

①,➁,➂ meets the reference coordinate

table (see above). Otherwise, re-do the white balance adjustments.

5-6-6 White Balance Adjustment

5-6-6 (A) REFERENCE COORDINATE TABLE

5-6-6 (B) POSITION OF MEASUREMENT PROBE

Special Notes:

- When the value of the Middle White does not meet the Reference Coordinate Table, adjust after selecting the factory value of r,b main bright.

- Adjust the CA100 Probe after calibrating it.

- Use a Shibasoku Pattern Generator (10-Step Pattern Generator).

100mm

2 3 4 5 6 7 8 9 10

1Probe

2Probe

3Probe

10-sept signal input

W/B Spec

CA-100

Diffusion F ilter Used

yxY

H/L 270 261

7.0

M/L 273 250

L/L 275

260

0.5

1.5

0.20 0.03

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