samsung LN23R71BAX, LN23R71WAX, LN26R71BAX, LN32R71BAX, LN40R71BAX Service Manual

TFT-LCD TV

Chassis GNB23MLA GNB26MLA GNB32MLA GNB40MLA

Model

LN23R71BAX

LN23R71WAX

LN26R71BAX

LN32R71BAX

LN40R71BAX

SERVICE Manual

TFT-LCD TV		Feature

-RF, HDMI, PC(Analog), Component, Video, S-Video

-Brightness : 500cd/m2

-Contrast Ratio:

23"/ 26" : 3000:1, 32"/ 40" : 5000:1

-Response time : 8ms

-Dynamic contrast

-PIP(on COM, PC, HDMI)

Contents

1.Precautions………………………………………………………………………………………………………………………………………1-1 1-1 Safety Precautions ……………………………………………………………………………………………………………………… 1-1 1-2 Servicing Precautions …………………………………………………………………………………………………………………… 1-2 1-3 Static Electricity Precautions …………………………………………………………………………………………………………… 1-2 1-4 Installation Precautions…………………………………………………………………………………………………………………… 1-3

2. Product specifications …………………………………………………………………………………………………………………………2-1

2-1 Fashion Feature…………………………………………………………………………………………………………………………… 2-1

2-2 LN23R71BAX/LN23R71WAX Specifications ………………………………………………………………………………………… 2-2

2-3 LN26R71BAX Specifications …………………………………………………………………………………………………………… 2-3

2-4 LN32R71BAX Specifications …………………………………………………………………………………………………………… 2-4

2-5 LN40R71BAX Specifications …………………………………………………………………………………………………………… 2-5

2-6 Spec Comparison ………………………………………………………………………………………………………………………… 2-6

2-7 Option Specification ……………………………………………………………………………………………………………………… 2-7

3. Alignments and Adjustments …………………………………………………………………………………………………………………3-1

3-1 Service Instruction ……………………………………………………………………………………………………………………… 3-1 3-2 How to Access Service Mode …………………………………………………………………………………………………………… 3-2 3-3 Factory Data ……………………………………………………………………………………………………………………………… 3-3 3-4 Service Adjustment ……………………………………………………………………………………………………………………… 3-9 3-5 Software Upgrade ……………………………………………………………………………………………………………………… 3-12

4. Troubleshooting ………………………………………………………………………………………………………………………………4-1 4-1 First Checklist for Troubleshooting ………………………………………………………………………………………………………4-1 4-2 Checkpoints by Error Mode ……………………………………………………………………………………………………………… 4-2

5. Exploded View and Parts List …………………………………………………………………………………………………………………5-1 5-1 LN23R71BAX/LN23R71WAX Exploded View ………………………………………………………………………………………… 5-1 5-2 LN23R71BAX Parts list…………………………………………………………………………………………………………………… 5-2 5-3 LN23R71WAX Parts list ………………………………………………………………………………………………………………… 5-2 5-4 LN26R71BAX Exploded View …………………………………………………………………………………………………………… 5-3 5-5 LN26R71BAX Parts list…………………………………………………………………………………………………………………… 5-4 5-6 LN32R71BAX Exploded View …………………………………………………………………………………………………………… 5-5 5-7 LN32R71BAX Parts list…………………………………………………………………………………………………………………… 5-6 5-8 LN40R71BAX Exploded View …………………………………………………………………………………………………………… 5-7 5-9 LN40R71BAX Parts list…………………………………………………………………………………………………………………… 5-8

6. Electrical Parts List ……………………………………………………………………………………………………………………………6-1 6-1 LN23R71BAX/LN23R71WAX Parts List ……………………………………………………………………………………………… 6-1 6-2 LN26R71BAX Parts List………………………………………………………………………………………………………………… 6-18 6-3 LN32R71BAX Parts List………………………………………………………………………………………………………………… 6-33 6-4 LN40R71BAX Parts List………………………………………………………………………………………………………………… 6-50

Contents

7.Block Diagram …………………………………………………………………………………………………………………………………7-1

8.Wiring Diagram …………………………………………………………………………………………………………………………………8-1 8-1 Wiring Diagram …………………………………………………………………………………………………………………………… 8-1 8-2 Main Board Layout ……………………………………………………………………………………………………………………… 8-2 8-3 PIN characteristic ………………………………………………………………………………………………………………………… 8-3 8-4 Power Board Layout ……………………………………………………………………………………………………………………… 8-6

9. Schematic Diagrams……………………………………………………………………………………………………………………………9-1 9-1 Power_Sound Schematic Diagram……………………………………………………………………………………………………… 9-1 9-2 Jack Schematic Diagram ………………………………………………………………………………………………………………… 9-2 9-3 Micom Schematic Diagram ……………………………………………………………………………………………………………… 9-3 9-4 SVP-PX/PX-Power/LBE-Option Schematic Diagram ………………………………………………………………………………… 9-4 9-5 Application Schematic Diagram ………………………………………………………………………………………………………… 9-5

10. Operating Instructions and Installation………………………………………………………………………………………………………10-1 10-1 Front …………………………………………………………………………………………………………………………………… 10-1 10-2 Connection Panel ……………………………………………………………………………………………………………………… 10-2 10-3 Remote control ………………………………………………………………………………………………………………………… 10-5 10-4 Installing the Stand …………………………………………………………………………………………………………………… 10-6 10-5 Installing the Wall Mount Kit ………………………………………………………………………………………………………… 10-6

11. Disassembly and Reassembly ………………………………………………………………………………………………………………11-1 11-1 Disassembly …………………………………………………………………………………………………………………………… 11-1 11-2 Reassembly …………………………………………………………………………………………………………………………… 11-5

12. PCB Diagram …………………………………………………………………………………………………………………………………12-1 12-1 Main PCB Diagram …………………………………………………………………………………………………………………… 12-1 12-2 Power PCB Diagram 23" ………………………………………………………………………………………………………………12-2 12-3 Power PCB Diagram 26", 32" ………………………………………………………………………………………………………… 12-3 12-4 Power PCB Diagram 40" ……………………………………………………………………………………………………………… 12-4

13. Circuit Descriptions ……………………………………………………………………………………………………………………………13-1

13-1 Block description ……………………………………………………………………………………………………………………… 13-1

13-2 Main Block ……………………………………………………………………………………………………………………………… 13-3

13-3 SMPS Board …………………………………………………………………………………………………………………………… 13-4

14. Reference Infomation ……………………………………………………………………………………………………………………… 14-1

14-1 Technical Terms ……………………………………………………………………………………………………………………… 14-1

14-2 Pin Assignments ……………………………………………………………………………………………………………………… 14-4

14-3 Timing Chart …………………………………………………………………………………………………………………………… 14-6

14-4 Panel Description …………………………………………………………………………………………………………………… 14-10

1 Precautions

1 Precautions

Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock.

1-1 Safety Precautions

1-1-1 Warnings

1.For continued safety, do not attempt to modify the circuit board.

2.Disconnect the AC power and DC Power Jack before servicing.

1-1-2 Servicing the LCD Monitor

1.When servicing the LCD Monitor Disconnect the AC line cord from the AC outlet.

2.It is essential that service technicians have an accurate voltage meter available at all times. Check the calibration of this meter periodically.

1-1-3 Fire and Shock Hazard

Before returning the monitor to the user, perform the following safety checks:

1.Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the monitor.

2.Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacitor networks, mechanical insulators, etc.

3.Leakage Current Hot Check (Figure 1-1):

WARNING: Do not use an isolation transformer during this test.

Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI C101.1, Leakage Current for Appliances), and Underwriters Laboratories

(UL Publication UL1410, 59.7).

Figure 1-1. Leakage Current Test Circuit

1-1-4 Product Safety Notices

Some electrical and mechanical parts have special safety-related characteristics which are often not evident from visual inspection. The protection they give may not be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified by on schematics and parts lists. A substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire and/or other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate.

1-1

1 Precautions

1-2 Servicing Precautions

WARNING:	An electrolytic capacitor installed with the wrong polarity might explode.
Caution:	Before servicing units covered by this service manual, read and follow the Safety
	Precautions section of this manual.
Note:	If unforeseen circumstances create conflict between the following servicing precautions and any of the safety
	precautions, always follow the safety precautions.

1-2-1 General Servicing

Precautions

1.Always unplug the unit s AC power cord from the AC power source and disconnect the DC Power Jack before attempting to:

(a) remove or reinstall any component or assembly, (b) disconnect PCB plugs or connectors, (c) connect a test component in parallel with an electrolytic capacitor.

2.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.

3.After servicing, always check that the screws, components and wiring have been correctly reinstalled. Make sure that the area around the serviced part has not been damaged.

4.Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal panels, input terminals and earphone jacks).

5.Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON. Connect an insulation resistance meter (500 V) 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.

6.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.

1-3 Static Electricity Precautions

Some semiconductor (solid state) devices can be easily damaged by static electricity. Such components are commonly called Electrostatically Sensitive Devices (ESD). Examples of typical ESD are integrated circuits and some field-effect transistors. The following techniques will reduce the incidence of component damage caused by static electricity.

1.Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your body by touching a known earth ground. Alternatively, wear a discharging wrist-strap device. To avoid a shock hazard, be sure to remove the wrist strap before applying power to the monitor.

2.After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent accumulation of an electrostatic charge.

3.Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESDs.

4.Use only a grounded-tip soldering iron to solder or desolder ESDs.

5.Use only an anti-static solder removal device. Some solder removal devices not classified as anti-static can generate electrical charges sufficient to damage ESDs.

6.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.

7.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.

Caution: Be sure no power is applied to the chassis or circuit and observe all other safety

precautions.

8.Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together, or lifting your foot from a carpeted floor can generate enough static electricity to damage an ESD.

1-2

2 Product Specifications

2-2 LN23R71BAX/LN23R71WAX Specifications

Item			Description
LCD Panel	TFT-LCDpanel,RGBverticalstripe,normalywhite,23-Inchviewable,0.372(H)x0.372(V)mmpixelpitch
Scanning Frequency	Horizontal: 30kHz~61kHz(Automatic)/Vertical: 60Hz~75Hz(Automatic)
Display Colors	16.7Millioncolors
Maximum Resolution	Horizontal:1360Pixels
	Vertical	:768Pixels
Input Video Signal	Analog0.7Vp-p± 5%positiveat75Ω,internallyterminated
Input Sync Signal	Type: SeperateH/V
	Level: TTLlevel
Maximum Pixel Clock rate	80MHz
Active Display	508.125mm/285.696mm
Horizontal/Vertical
ACpowervoltage&Frequencya	AC110,60Hz
Power Consumption	100W<1W
Dimensions(W x D x H)
Set	594x75x425.5mm(23.38x 2.95x16.75inch)_withoutstand
	594x215.5x475.5mm(23.38x8.48x18.72)_withstand
Weight
Set(After installation Stand)	8kg(17Ibs)
TV System	Tuning		Frequency Synthesize
	System		NTSC-M
	Sound		MONO, STEREO, SAP
EnvironmentalConsiderations	OperatingTemperature:10°C~40°C
	OperatingHumidity:10% ~ 80%,non-condensing
	StorageTemperature:-20°C~45°C
	StorageHumidity: 5% ~ 95%,non-condensing
Antenna Input	75Ω
Sound Characteristic	-MAXInternalspeakerOut: Right:5W/Left:5W
	-BASSControlRange:-8dB~+8dB
	-TREBLEControlRange:-8dB~+8dB
	-HeadphoneOut:10mWMAX
	-OutputFrequency:RF:80Hz~15kHz
			A/V:80Hz~20kHz

2-2

2 Product Specifications				2 Product Specifications
	2-3 LN26R71BAX Specifications
	Item			Description
	LCD Panel	TFT-LCDpanel,RGBverticalstripe,normalywhite,26-Inchviewable,0.372(H)x0.372(V)mmpixelpitch
	Scanning Frequency	Horizontal: 30kHz~61kHz(Automatic)/Vertical: 60Hz~75Hz(Automatic)
	Display Colors	16.7Millioncolors
	Maximum Resolution	Horizontal:1360Pixels
		Vertical	:768Pixels
	Input Video Signal	Analog0.7Vp-p± 5%positiveat75Ω,internallyterminated
	Input Sync Signal	Type: SeperateH/V
		Level: TTLlevel
	Maximum Pixel Clock rate	80MHz
	Active Display	575.77mm/323.71mm
	Horizontal/Vertical
	ACpowervoltage&Frequencya	AC110,60Hz
	Power Consumption	120W<1W
	Dimensions(W x D x H)
	Set	675x75x475.5mm(26.57x2.95x18.72inch)_withoutstand
		675x215.5x530mm(26.57x8.48x20.86inch)_withstand
	Weight
	Set(After installation Stand)	10kg(23lbs)
	TV System	Tuning		Frequency Synthesize
		System		NTSC-M
		Sound		MONO, STEREO, SAP
	EnvironmentalConsiderations	OperatingTemperature:10°C~40°C
		OperatingHumidity:10% ~ 80%,non-condensing
		StorageTemperature:-20°C~45°C
		StorageHumidity: 5% ~ 95%,non-condensing
	Antenna Input	75Ω
	Sound Characteristic	-MAXInternalspeakerOut: Right:5W/Left:5W
		-BASSControlRange:-8dB~+8dB
		-TREBLEControlRange:-8dB~+8dB
		-HeadphoneOut:10mWMAX
		-OutputFrequency:RF:80Hz~15kHz
				A/V:80Hz~20kHz

2-3

2 Product Specifications

2-4 LN32R71BAX Specifications

Item			Description
LCD Panel	TFT-LCDpanel,RGBverticalstripe,normalywhite,32-Inchviewable,0.372(H)x0.372(V)mmpixelpitch
Scanning Frequency	Horizontal: 30kHz~61kHz(Automatic)/Vertical: 60Hz~75Hz(Automatic)
Display Colors	16.7Millioncolors
Maximum Resolution	Horizontal:1360Pixels
	Vertical	:768Pixels
Input Video Signal	Analog0.7Vp-p± 5%positiveat75Ω,internallyterminated
Input Sync Signal	Type: SeperateH/V
	Level: TTLlevel
Maximum Pixel Clock rate	80MHz
Active Display	697.68mm/392.26mm
Horizontal/Vertical
ACpowervoltage&Frequencya	AC110,60Hz
Power Consumption	150W<1W
Dimensions(W x D x H)
Set	800x80x548.5mm(31.49x3.14x21.59inch)_withoutstand
	800x252x603mm(31.49x9.92x23.74inch)_Withstand
Weight
Set(After installation Stand)	15kg(33lbs)
TV System	Tuning		Frequency Synthesize
	System		NTSC-M
	Sound		MONO, STEREO, SAP
EnvironmentalConsiderations	OperatingTemperature:10°C~40°C
	OperatingHumidity:10% ~ 80%,non-condensing
	StorageTemperature:-20°C~45°C
	StorageHumidity: 5% ~ 95%,non-condensing
Antenna Input	75Ω
Sound Characteristic	-MAXInternalspeakerOut: Right:10W/Left:10W
	-BASSControlRange:-8dB~+8dB
	-TREBLEControlRange:-8dB~+8dB
	-HeadphoneOut:10mWMAX
	-OutputFrequency:RF:80Hz~15kHz
			A/V:80Hz~20kHz

2-4

2 Product Specifications

2-5 LN40R71BAX Specifications

Item			Description
LCD Panel	TFT-LCDpanel,RGBverticalstripe,normalywhite,40-Inchviewable,0.511(H)x0.511(V)mmpixelpitch
Scanning Frequency	Horizontal: 30kHz~61kHz(Automatic)/Vertical: 60Hz~75Hz(Automatic)
Display Colors	16.7Millioncolors
Maximum Resolution	Horizontal:1360Pixels
	Vertical	:768Pixels
Input Video Signal	Analog0.7Vp-p± 5%positiveat75Ω,internallyterminated
Input Sync Signal	Type: SeperateH/V
	Level: TTLlevel
Maximum Pixel Clock rate	80MHz
Active Display	885.17mm/497.64mm
Horizontal/Vertical
ACpowervoltage&Frequencya	AC110,60Hz
Power Consumption	210W<1W
Dimensions(W x D x H)
Set	991.5x87x658.5mm(39.03x3.42x25.92inch)_withoutstand
	991.5x326x713mm(39.03x12.83x28.07inch)_withstand
Weight
Set(After installation Stand)	23kg(50lbs)
TV System	Tuning		Frequency Synthesize
	System		NTSC-M
	Sound		MONO, STEREO, SAP
EnvironmentalConsiderations	OperatingTemperature:10°C~40°C
	OperatingHumidity:10% ~ 80%,non-condensing
	StorageTemperature:-20°C~45°C
	StorageHumidity: 5% ~ 95%,non-condensing
Antenna Input	75Ω
Sound Characteristic	-MAXInternalspeakerOut: Right:10W/Left:10W
	-BASSControlRange:-8dB~+8dB
	-TREBLEControlRange:-8dB~+8dB
	-HeadphoneOut:10mWMAX
	-OutputFrequency:RF:80Hz~15kHz
			A/V:80Hz~20kHz

2-5

2 Product Specifications

2-6 Spec Comparison

Model		LN26R71BX/LN32R71BX/LN40R71BX		LN23R71BAX/LN23R71WAX/LN26R71BAX/
				LN32R71BAX/LN40R71BAX
Design
Frequency
Horizontal		30 ~ 61 kHz		30 ~ 61 kHz
Vertical		60 ~ 75 Hz		60 ~ 75 Hz
Display Color		16,777,216 colors		16,777,216 colors
PC Resolution
Maximum mode		WXGA, 1360 x 768 @ 60 Hz		1360 x 768 / 60 Hz
Input Signal
Sync Signal		H/V Separate, TTL, P. or N.		H/V Separate, TTL, P. or N.
Video Signal		0.7 Vp-p @ 75ohm		0.7 Vp-p @ 75ohm
Power
Consumption		100W / 152W / 205W		100W / 120W / 150W / 210W
Normal		< 1W		< 1W
Power Saving
Input source		HDMI		HDMI
Difference
PIP		PIP, POP		PIP, POP
Sound Output		3W / 5W / 10W		5W / 10W

2-6

2 Product Specifications

2-7 Option Specification

Item

Item Name

Code.No

Remark

Remote Control

& BN59-00604A

Batteries (AAA x 2)

Power Cord

3903-000144

Cleaning Cloth

BN63-001798A

Owner's

Instructions BN68-00998E

26" : BN90-00913B Stand 32" : BN90-00842A 40" : BN90-00847A

Stand Screw

26" : BN63-02323A Cover-Bottom 32" : BN63-02323A 40" : BN63-02366A

2-7

3 Alignments and Adjustments

3 Alignments and Adjustments

3-1 Service Instruction

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.

2.Use the specified test equipment or its equivalent.

3.Correct impedance matching is essential.

4.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 result.

5.Connect the TV only to an AC power source with voltage and frequency as specified on the backcover nameplate.

6.Do not attempt to connect or disconnect any wire while the TV is turned on. Make sure that the power cord is disconnected before replacing any parts.

7.To protect aganist shock hazard, use an isolation transform.

3-1

3 Alignments and Adjustments

3-2 How to Access Service Mode

3-2-1 Entering Factory Mode

1.To enter "Service Mode" Press the remote -control keys in this sequence : - If you do not have Factory remote - control

Power OFF				MUTE				1				8				2				Power On
- If you have Factory remote - control

PICTURE ON DISPLAY FACTORY

-The buttons are active in the service mode.

1.Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left

Arrow Right, Menu, Enter, Number Key(0~9) 2. Function - Control Key : Power, CH +, CH -, VOL +, VOL -,

Menu, TV/VIDEO(Enter)

3-2

3 Alignments and Adjustments

3-3 Factory Data

1.	Calibration
2.	Option Table	XXXX XXXX

3.W/B

4.W/B Movie

5.MTK8202

6.FBE2 Option

7.Sound

8.YC Delay

9.Adjust

10.Bus Stop

11.	Password	80 80 80 80
12.	Checksum	0000

13.Dynamic Contrast

14.Spread Spectrum

15.Reset

HDCP	Write	Success..
T_BDPMNSA-1000 Aug 04 2006 16:41:30 -------------------				(Main Micom Ver)
Month/ Day / Year / Hour/ Min./Sec.
Panel On Time(Hour)			XXXXX
TV	Air	2	XX

1.Calibration

1)AV Calibration

2)DTV Calibration

3)PC Calibration

4)HDMI Calibration

2.Option Byte

inch Option	32	Carrier Mute	ON	Shop Mode	OFF
Gamma	AUO	Auto FM	ON	Debug	OFF
Panel option	AUO_AMVA	High Dev.	OFF	Dynamic Contrast	OFF
2HDMI	OFF	ACR	OFF	V-Chip	OFF
Brt,Sensor	OFF	Dynamic CE	ON
EnergySave	ON	Dynamic Dimming	ON
LBE/FBE	OFF	Color System	Manual
FRC(Micronas)	OFF	Auto Power	ON
FRC(Samsung)	OFF	Magazine LNA	OFF
LNA	OFF	V-Chip Area	US

3-3

3 Alignments and Adjustments

1.Calibration

2.Option Table

AV Calibration	EXE
DTV Calibration	EXE
PC Calibration	EXE
HDMI Calibration	EXE

Inch Option	26"	32"	40"
Gamma	AUO	AUO	AMLCD
Panel Option	AUO	AUO_AMVA AMLCD_INT
2Hdmi	OFF	OFF	OFF
Brt. Sensor	OFF	OFF	OFF
EnergySave	ON	ON	ON
LBE/FBE	OFF	OFF	OFF
FRC(Micronas)	OFF	OFF	OFF
FRC(Samsung)	OFF	OFF	OFF
LNA	OFF	OFF	OFF
Carrier Mute	ON	ON	ON
Auto FM	ON	ON	ON
High Deviation	OFF	OFF	OFF
ACR	OFF	OFF	OFF
Dynamic CE	ON	ON	ON
Dynamic Dimming	ON	ON	ON
Color System	Manual	Manual	Manual
Auto Power	ON	ON	ON
Magazine LNA	OFF	OFF	OFF
V-Chip Area	US	US	US
Shop Mode	OFF	OFF	OFF
Debug	OFF	OFF	OFF
Dynamic Contrast	OFF	OFF	OFF
V-Chip	OFF	OFF	OFF

3. White Balance			Sub Brightness	104	104	104
			R-Offset	122	122	122
			G-Offset	128	128	128
			B-Offset	129	129	129
			Sub Contrast	165	155 --> 140	155 --> 140
			R-Gain	137	137	137
			G-Gain	128	128	128
			B-Gain	136	136	136

3-4

					3 Alignments and Adjustments
4. SVP-PX
			ComB Filter	Y-Filter	80H
			Sharpness	H2Gain	00H
				H4Gain	0CH
				V2Gain	00H
				V4Gain	0CH
				Sr2Gain	00H
				Sr4Gain	08H
				Sl2Gain	00H
				Sl4Gian	08H
				PeaKTh1	03H
				PeaKTh2	33H
				PeaKTh3	45H
			NR	Y_NR_OFF	80H
				C_NR_OFF	80H
				Y_NR_ON	80H
				C_NR_ON	80H

RGB Calibration R-Offset	23H
G-Offset	23H
B-Offset	23H
R-Gain	9BH
G-Gain	9BH
B-Gain	9BH

ADC Calibration	TCD3 Contrast	6AH
	TCD3 Brightness	26H
	TCD3 CR	80H
	TCD3 CB	80H
	TCD3 Delay	00H
	Analog Y Offset	40H
	Analog PB Offset	80H
	Analog PR Offset	80H
	Analog Y Gain	D6H
	Analog PB Gain	FEH
	Analog PR Gain	FEH
	Black Level	00H
	Svp Brightness	00H

3-5

3 Alignments and Adjustments
								low high	delta
				Calibration Target			AV ADC	17H D5H	04H
							COMP ADC	0FH EBH	02H
							PC ADC	17H D5H	04H
							ALL RGB	00H DDH	08H
				Color Management			Skin Direction	Reddish
							Skin Enhane	40H
5. Option block
						EXE
6. STV8258/STA323W
						Ch1 Volume		40H
						Ch2 Volume		40H
						Stereo Pilot H		23H
						Stereo Pilot L		10H
						Sap Pilot H		80H
						Sap Pilot L		60H
						SQTH		70H
						CETH		10H
						AV Delay		55H
						Comp delay		32H
						HDMI Delay		32H
						PC Delay		32H
						L1 Att/Rel Thres		7F
7. Y/C Delay
						RF PAL-M		77H
						RF PAL-N		64H
						RF NTSC		63H
						AV PAL-M		76H
						AV PAL-N		76H
						AV NTSC		54H
						S-VIDEO PAL-M		77H
						S-VIDEO PAL-N		77H
						S-VIDEO NTSC		BBH
						Component		88H
						PC		88H
						HDMI		88H

3-6

8. Adjust

9.I2C Check

10.W/B MOVIE

3 Alignments and Adjustments

Video Mute Time		10
Vol Curve		Large
Melody Volume		4
Ana_Dimm_Max		FEH
LNA PLUS	RFDB-1 Level	2
	RFDB-2 Level	5
	RFDB-3 Level	9
	RFDB-4 Level	24
Hotel Option	Hotel Mode	OFF
	Power On Channel	1
	Power On Volume	10
	Max Volume	100
	Local Key Lock	OFF
	Power On Source	RF

EXE

WB Movie		OFF
Color Mode		Movie
W1	R Gain	157
W1	B Gain	76
W1	R Offset	119
W1	B Offset	138
W2	R Gain	142
W2	B Gain	48
W2	R Offset	129
W2	B Offset	143
Movie Contrast		80
Movie Brightness		65
Movie Color		35
Movie Sharpness		35
Movie Color Tone		Warm2

3-7

3 Alignments and Adjustments

11. Checksum	18EA

12.	Reset				EXE
13.	Spread Spectrum
					Spectrum	ON
					Delta	3
					Positive	8
					Negative	2

3-8

3 Alignments and Adjustments

3-4 Service Adjustment

3-4-1 White Balance - Calibration

If picture color is wrong, do calibration first.

Equipment : CA210, Patten : chess pattern

Execute calibration in Factory Mode

Source AV : PAL composite, Component : 1280*720/60Hz

PC : 1024*768/60Hz

( chess patten )

3-4-2 White Balance - Adjustment

If picture color is wrong, check White Balance condition.

Equipment : CA210, Patten : Toshiba

Adjust W/B in Factory Mode

Sub brightness and R/G/B Offset controls low light region

Sub contrast and R/G/B Gain controls high light region

Source AV : PAL composite, Component : 1280*720/60Hz

HDMI[DVI] : 1280*720/60Hz

[ Test Pattern : MSPG-945 Series Pattern #92 ]

*Color temperature

1500K +/-500, -6 ~-20 MPCD

*Color coordinate
H/L : 267/263 +/- 2	35.0 Ft +/- 2.0Ft
L/L : 270/260 +/- 3	1.5 Ft +/- 0.2Ft
W/B Patten

3-9

3 Alignments and Adjustments

3-4-3 Conditions for Measurement

1.On the basis of toshiba ABL pattern : High Light level (57 IRE) - INPUT SIGNAL GENERATOR : MSPG-925LTH

* Mode	NO	1	:	744X484@60 Hz
	NO	2	:	744X484@60 Hz
	NO	6	:	1280X720@60 Hz
	NO 21		:	1024X768@60 Hz
* Pattern	NO	36	:	16 Color Pattern
	NO	16	:	Toshiba ABL Pattern
	NO	92	:	W/B Pattern

2.Optical measuring device : CA210 (FL)

Please use the MSPG-925 LTH generator for model LE26M51B/LE32M51B/LE40M51B/LE46M51B.

3-4-4 Method of Adjustment

1. Adjust the white balance of AV, Component and DVI Modes.

(AV Component)

a) Set the input to the mode in which the adjustment will be made (RF DTV PC DVI).

*Input signal - VIDEO Mode : Model #2 (744*484 Mode), Pattern #16

-DTV,DVI Mode : Model #6 (1280*720 Mode), Pattern #16

-HDMI Mode: Model #6(1280*720 Mode), Pattern #16

b)Enter factory color control, confirm the data.

c)Adjust the low light. (Refer to table 1, 2 in adjustment position by mode)

-Adjust sub - Brightness to set the 'Y' value.

-Adjust red offset ('x') and blue offset ('y') to the color coordinates.

Picture 4-2 W/B Patten

*Do not adjust green offset data.

d)Adjust the high light. (Refer to table 1, 2 in adjustment position by mode) - Adjust red gain ('x') and blue gain ('y') to the color coordinates.

*Do not adjust the green gain and sub-contrast (Y) data.

3-10

3 Alignments and Adjustments

Picture 4-3 W/B Patten

3-11

3 Alignments and Adjustments

3-5 Software Upgrade

3-5-1 How to Update Flash ROM (with RS-232C Cable)

1.Installthe Flash Downloader

ConnectSet(Service Jack)and Jig Cable to execute Program Update.

2.Turn on the Set (or on Stand by mode) - Run "MTKtool"

-Click Reset

-Choose MT8202 (1)

-Select Com Port (2) (Auto Detect)

-Select Bin file, by browse (3)

-Click Upgrade button (4)

3. Turn off (= AC Power off) the Set (waiting a few seconds) and turn on again.

3-12

3 Alignments and Adjustments

3-5-2 How to Update Flash ROM (with UART JIG)

¡Ø In the usual cases, Update S/W by using RS-232C Cable.

If some problems occur under this condition, update S/W by using UART JIG.

You can use UART JIG with USB Connection.

Install in your PC before using the JIG

Connect 4P Lead connector to Main Board(CN501)

3-13

3 Alignments and Adjustments

* Pin Assignment

Turn on the Set (or on Stand by mode) - Run "MTKtool"

When you run "MTKtool", this Program can detect USB port automatically Choose USB interface and Update S/W as RS-232C case.

3-14

4 Troubleshooting

4 Troubleshooting

4-1 First Checklist for Troubleshooting

1.Check the various cable connections first.

-Check to see if there is a burnt or damaged cable.

-Check to see if there is a disconnected cable connection or a connection is too loose.

-Check to see if the cables are connected according to the connection diagram.

2.Check the power input to the Main Board.

3.Check the voltage in and out between the SMPSMain Board, between the SMPS INVERTER Board, and between the Main LVDS Boards.

4-1

4 Troubleshooting

4-2 Checkpoints by Error Mode

4-2-1 No Power

LAMP off, power indicator LED red color?

Yes

Does proper Satand-By DC A5V appear at C127

Does proper Main DC B12V, B5V, B12VS appear at C104, BD105, C119?

Does proper Inverter DC 24V appear at CNM801 in SMPS

Yes

Does proper DC A3.3V,A1.8Vappear at C126, C156?

Yes

Does proper DC B9V,B3.3V_8202/B3.3VD, B2.5V_8202 appear at C103,C132, C145?

Yes

Does proper DC 5V, 3.3V, 1.8V appear at C811, C853, C833?

Yes

Does proper DC B3.3FB, B1.2FB, B1.8VD appear at C179_FBE, C182_FBE, C159?

Yes

Does proper DC B3.3VD appear at D8014?

Yes

A power is supplied to set?

No

No

No

No

No

No

No

Check a connection a power cable. P/N : BN39-00802A BN39-00802B(40")

Change the Main Power Ass'y

23" : BN44-00158A

26" : BN44-00156A

32" : BN44-00156A

40" : BN44-00167A/00165A

Check IC104, IC107 Change the

Main Ass'y

Check a IC809, IC802.

Change a main PCB ass'y.

Check IC101, IC105, IC106 Change the

Main Ass'y

Check IC110_FBE, IC111_FBE, IC109

Change the Main Ass'y

Check IC8001

Change the Main Ass'y

Check a other function(No picture part) Replace a LCD Panel

23" : BN07-00365A

26" : BN07-00254A

32" : BN07-00385A

40" : BN07-00387A

4-2

4 Troubleshooting

4-2-2 No Video (Analog PC Signal)

Power Indicator is off.

Lamp on, no video.

Yes

Check the PC source and check the connection of DSUB?

Yes

Does the signal appear at 1 #R25, T25, T24, U24, V25,

V26(R,G,SOG,B,V,H) of

IC602?

Yes

Does the digital data appear at 2 output of R916_FBE ~

R921FBE?

Yes

Does the digital data appearat 3 output of R1001_FBE ~

R1017_FBE?

Yes

Check the LVDS cable?

Replace the LCD panel?

No

No

No

No

No

Input an analog PC signal. check the connected cable.

Check JA306, PC cable. Change the PC cable.

Change the main PCB Ass'y.

Check IC602. Change the main PCB Ass'y.

Check IC 901_FBE Change the main PCB Ass'y.

Please, call to Samsung Co. LTD

4-3

4 Troubleshooting

WAVEFORMS

1 2 PC Input (V-Sync, H-Sync)

3 LVDS Out (CLK +/-)

4-4

4 Troubleshooting

4-2-3 No Video (HDMI - Digital Signal)

Power Indicator is off.

Lamp on, no video.

Yes

Check the HDMI source and check the connection of HDMI cable?

Yes

Does the signal appear at 4 R461,R464,R457,R458,R454,

R456,R467-R474?

Yes

5Does the digital data appear at output of R738 ~ R745?

Yes

Does the digital data appear 2 at output of R916_FBE ~

R921FBE?

Yes

Does the digital data appearat 3 output of R1001_FBE ~

R1017_FBE?

Yes

Check the LVDS cable?

Replace the LCD panel?

No	Input a HDMI signal.
	check the connected cable.

Check JA801, JA802, No HDMI cable.

Change the HDMI cable. Change the main PCB Ass'y

No	Check IC405
	Change the main PCB Ass'y.

No	Check IC601.
	Change the main PCB Ass'y.

No	Check IC 901_FBE
	Change the main PCB Ass'y.

No

Please, call to Samsung Co. LTD

4-5