Samsung LA32D400E1 Schematic

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1. Precautions

1. Precautions

1-1. Safety Precautions

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

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 TV

1.When servicing the LCD TV, 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 LCD TV 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 LCD TV.

2.Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and compartment covers or shields, isolation resistorcapacitor 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).

(READING SHOULD)

NOT BE ABOVE 0.5mA

				LEAKAGE
DEVICE
				CURRENT
UNDER
				TESTER
TEST
	TEST ALL
	EXPOSED METAL
	SURFACES
2-WIRE CORD

*ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)	EARTH
	GROUND	Figure 1-1. Leakage Current Test Circuit

4.With the unit completely reassembled, plug the AC line cord directly into a 120V AC 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: metal cabinets, screwheads and control shafts.

The current measured should not exceed 0.5 milliamp.

Reverse the power-plug prongs in the AC outlet and repeat the test.

1-1-4. Product Safety Notices

Some electrical and mechanical parts have special safetyrelated 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 theblades 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. Electrostatically Sensitive Devices (ESD) 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 LCD TV.

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

1. Precautions

1-4. Installation Precautions

1.For safety reasons, more than a people are required for carrying the product.

2.Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock.

3.Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal temperature may cause fire.

4.Bend the external antenna cable when connecting it to the product. This is a measure to protect it from being exposed to moisture. Otherwise, it may cause a fire or electric shock.

5.Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product. Also check the antenna cable or the external connectors if they are fully unplugged. Damage to the cord may cause fire or electric shock.

6.Keep the antenna far away from any high-voltage cables and install it firmly. Contact with the highvoltage cable or the antenna falling over may cause fire or electric shock.

7.When installing the product, leave enough space (0.4m) between the product and the wall for ventilation purposes.

A rise in temperature within the product may cause fire.

1-3

2. Product specifications

2. Product specifications

2-1. Feature & Specifications

Model

LA19D400E1

Feature

ATV, 1-HDMI, 1-Component, 1-A/V, D-SUB, 1-USB2.0Brightness : 250cd/m2

High Contrast Ratio : 1,000:1Response Time : 5ms

				Specifications
	Item			Description
	LCD Panel	19inch HD
	Scanning Frequency	Horizontal : 37.13 kHz ~ 59.25 kHz (Automatic)
		Vertical : 50 Hz ~ 75 Hz (Automatic)
	Display Colors	16.7M color
	Maximum resolution	Horizontal : 1366 Pixels
		Vertical : 768 Pixels
	Input Signal	Analog 0.7 Vp-p ± 5% positive at 75Ω , internally terminated
	Input Sync Signal	H/V Separate, TTL, P. or N.
	Maximum Pixel Clock rate	89 MHz (Typ 67.1 MHz)
	Active Display	16.13 x 9.07 inches (409.8 (H) x 230.4 (V) mm)
	Horizontal/Vertical
	AC power voltage & Frequency	AC 110V ~ 120V, 60 Hz
	Power Consumption	Under 35W (Under 0.3W, Stand by)
	Set Dimensions (W x D x H)	18.2 x 6.3 x 13.7 nchs (461.3 x 160.7 x 346.8 mm)_with stand
		18.2 x 2.4 x 11.8 inchs (461.3 x 61.2 x 299.7 mm)_without stand
	Set Weight	8.8 Ibs (4.0kg)_with stand
		8.4 Ibs (3.8kg)_without stand
	Stand Dimensions (W x D x H)	12.0 x 6.3 x 2.9 inchs (303.7 x 160.7 x 72.6 mm)
	Stand Weight	0.5 Ibs (0.21kg)
	TV System	Tunning		Frequency Synthesize (Refer to detailed Frequency Table)
		System		PAL, SECAM, NT4.43
		Sound		BG, DK, L/L’, NICAM, MPEG1, DD, DD+, HE-AAC
	Environmental Considerations	Operating Temperature : 50˚F ~ 104˚F (10˚C ~ 40˚C)
		Operating Humidity : 10% ~ 80%, non-condensing
		Storage temperature : -13˚F ~ 113˚F (-25˚C ~ 45˚C)
		Storage Humidity : 5% ~ 95%, non-condensing
	Audio Spec.	- MAX Internal speaker Out : Right => 3W, Left => 3W
		- BASS Control Range : -8 dB ~ + 8dB
		- TREBLE Control Range : -8 dB ~ +8 dB
		- Headphone Out : 10 mW MAX
		- Output Frequency : RF : 80 Hz ~ 15 kHz
				A/V : 80 Hz ~ 20 kHz

Note: Dolby Digital+, Game Mode, Film Mode, Energy Saving, Anynet+

2-1

2. Product specifications

Model		LA22D400E1R
		Feature
ATV, 1-HDMI, 1-Component, 1-A/V, D-SUB, 1-USB2.0
Brightness : 300cd/m2
High Contrast Ratio : 1,000:1
Response Time : 5ms

				Specifications
	Item			Description
	LCD Panel	22inch FHD
	Scanning Frequency	Horizontal : 60 kHz ~ 73 kHz (Automatic)
		Vertical : 50 Hz ~ 75 Hz (Automatic)
	Display Colors	16.7M color
	Maximum resolution	Horizontal : 1920 Pixels
		Vertical : 1080 Pixels
	Input Signal	Analog 0.7 Vp-p ± 5% positive at 75Ω , internally terminated
	Input Sync Signal	H/V Separate, TTL, P. or N.
	Maximum Pixel Clock rate	97.98 MHz (Typ 74.25 MHz)
	Active Display	18.77 x 10.56 inches (476.64 (H) x 268.11 (V) mm)
	Horizontal/Vertical
	AC power voltage & Frequency	AC 110V ~ 120V, 60 Hz
	Power Consumption	Under 60W (Under 1W, Stand by)
	Set Dimensions (W x D x H)	21.0 x 6.8 x 15.4 nchs (533.2x171.6x390.0 mm)_with stand
		21.0 x 6.8 x 15.4 nchs (533.2x171.6x390.0 mm)_with stand
	Set Weight	11.2 Ibs (5.1kg)_with stand
		10.8 Ibs (4.9kg)_without stand
	Stand Dimensions (W x D x H)	13.8 x 6.8 x 3.0 inchs (351.7 x 171.6 x 75.3 mm)
	Stand Weight	0.5 Ibs (0.25kg)
	TV System	Tunning		Frequency Synthesize (Refer to detailed Frequency Table)
		System		PAL, SECAM, NT4.43
		Sound		BG, DK, L/L’, NICAM, MPEG1, DD, DD+, HE-AAC
	Environmental Considerations	Operating Temperature : 50˚F ~ 104˚F (10˚C ~ 40˚C)
		Operating Humidity : 10% ~ 80%, non-condensing
		Storage temperature : -13˚F ~ 113˚F (-25˚C ~ 45˚C)
		Storage Humidity : 5% ~ 95%, non-condensing
	Audio Spec.	- MAX Internal speaker Out : Right => 3W, Left => 3W
		- BASS Control Range : -8 dB ~ + 8dB
		- TREBLE Control Range : -8 dB ~ +8 dB
		- Headphone Out : 10 mW MAX
		- Output Frequency : RF : 80 Hz ~ 15 kHz
				A/V : 80 Hz ~ 20 kHz

Note: Dolby Digital+, Game Mode, Film Mode, Energy Saving, Anynet+

2-2

2. Product specifications

Model		LA26D400E1
		Feature
ATV, 2-HDMI, 2-Component, 2-A/V, D-SUB, 1-USB2.0
Brightness : 450cd/m2
High Contrast Ratio : 3,000:1
Response Time : 8.5ms

				Specifications
	Item			Description
	LCD Panel	26inch HD
	Scanning Frequency	Horizontal : 43 kHz ~ 53 kHz (Automatic)
		Vertical : 47 Hz ~ 63 Hz (Automatic)
	Display Colors	16.7M color
	Maximum resolution	Horizontal : 1366 Pixels
		Vertical : 768 Pixels
	Input Signal	Analog 0.7 Vp-p ± 5% positive at 75Ω , internally terminated
	Input Sync Signal	H/V Separate, TTL, P. or N.
	Maximum Pixel Clock rate	82 MHz (Typ 76 MHz)
	Active Display	22.67 x 12.74 inches (575.769 (H) x 323.712 (V) mm)
	Horizontal/Vertical
	AC power voltage & Frequency	AC 110V ~ 120V, 60 Hz
	Power Consumption	Under 85W (Under 1W, Stand by)
	Set Dimensions (W x D x H)	25.5 x 8.7 x 19.3 inchs (646.5x222.1x489.5 mm)_with stand
		25.5 x 3.5 x 16.6 inchs (646.5x78.8x421.3 mm)_without stand
	Set Weight	14.6 Ibs (6.6kg)_with stand
		13.7 Ibs (6.2kg)_without stand
	Stand Dimensions (W x D x H)	17.2 x 8.7 x 3.2 inchs (437.1 x 222.1 x 82.0 mm)
	Stand Weight	1.0 Ibs (0.47kg)
	TV System	Tunning		Frequency Synthesize (Refer to detailed Frequency Table)
		System		PAL, SECAM, NT4.43
		Sound		BG, DK, L/L’, NICAM, MPEG1, DD, DD+, HE-AAC
	Environmental Considerations	Operating Temperature : 50˚F ~ 104˚F (10˚C ~ 40˚C)
		Operating Humidity : 10% ~ 80%, non-condensing
		Storage temperature : -13˚F ~ 113˚F (-25˚C ~ 45˚C)
		Storage Humidity : 5% ~ 95%, non-condensing
	Audio Spec.	- MAX Internal speaker Out : Right => 5W, Left => 5W
		- BASS Control Range : -8 dB ~ + 8dB
		- TREBLE Control Range : -8 dB ~ +8 dB
		- Headphone Out : 10 mW MAX
		- Output Frequency : RF : 80 Hz ~ 15 kHz
				A/V : 80 Hz ~ 20 kHz

Note: Dolby Digital+, Game Mode, Film Mode, Energy Saving, Anynet+

2-3

2. Product specifications

Model		LA32D400E1
		Feature
ATV, 2-HDMI, 2-Component, 2-A/V, D-SUB, 1-USB2.0
Brightness : 450cd/m2
High Contrast Ratio : 3,500:1
Response Time : 8.5ms

				Specifications
	Item			Description
	LCD Panel	32inch HD
	Scanning Frequency	Horizontal : 43 kHz ~ 53 kHz (Automatic)
		Vertical : 47 Hz ~ 63 Hz (Automatic)
	Display Colors	16.7M color
	Maximum resolution	Horizontal : 1366 Pixels
		Vertical : 768 Pixels
	Input Signal	Analog 0.7 Vp-p ± 5% positive at 75Ω , internally terminated
	Input Sync Signal	H/V Separate, TTL, P. or N.
	Maximum Pixel Clock rate	82 MHz (Typ 76 MHz)
	Active Display	27.47 x 15.44 inches (697.685 (H) x 392.256 (V) mm)
	Horizontal/Vertical
	AC power voltage & Frequency	AC 110V ~ 120V, 60 Hz
	Power Consumption	Under 110W (Under 1W, Stand by)
	Set Dimensions (W x D x H)	30.9 x 9.9 x 22.3 inchs (784.4x251.7x565.6 mm)_with stand
		30.9 x 3.1 x 19.8 inchs (784.4x78.8x502.8 mm)_without stand
	Set Weight	23.6 Ibs (10.7kg)_with stand
		18.7 Ibs (8.5kg)_without stand
	Stand Dimensions (W x D x H)	19.8 x 9.9 x 7.1 inchs (503.7 x 251.7 x 181.6 mm)
	Stand Weight	5.0 Ibs (2.25kg)
	TV System	Tunning		Frequency Synthesize (Refer to detailed Frequency Table)
		System		PAL, SECAM, NT4.43
		Sound		BG, DK, L/L’, NICAM, MPEG1, DD, DD+, HE-AAC
	Environmental Considerations	Operating Temperature : 50˚F ~ 104˚F (10˚C ~ 40˚C)
		Operating Humidity : 10% ~ 80%, non-condensing
		Storage temperature : -13˚F ~ 113˚F (-25˚C ~ 45˚C)
		Storage Humidity : 5% ~ 95%, non-condensing
	Audio Spec.	- MAX Internal speaker Out : Right => 10W, Left => 10W
		- BASS Control Range : -8 dB ~ + 8dB
		- TREBLE Control Range : -8 dB ~ +8 dB
		- Headphone Out : 10 mW MAX
		- Output Frequency : RF : 80 Hz ~ 15 kHz
				A/V : 80 Hz ~ 20 kHz

Note: Dolby Digital+, Game Mode, Film Mode, Energy Saving, Anynet+

2-4

2. Product specifications

2-2. Detail Factory Option

If you replace the main board with new one, please change the factory option as well. The options you must change are “Type”.

 LD400

	Model Name			LA19D400E1	LA22D400E1R	LA26D400E1	LA32D400E1
			Vendor	CPT	CMI	CMI	CMI
		Panel	CODE	BN07-00941A	BN07-00888A	BN07-00950A	BN07-00951B
			SPEC	CLAA185WA03-A	M215H1-L03	V260B3-L08	V315B5-L13
			Vendor	PowerNet	SEM	DYREL	SEM
		SMPS	CODE	BN44-00436A	BN44-00437A	BN44-00438C	BN44-00438A
			SPEC	I19HD_BPN	I22HD_BSM	I2632F1_BDY	I2632F1_BSM
	Byte	Item	Adjustment Range		ASIA Ready
	1	Factory Reset	-
			19A6TH0C/22P6TH0C/22I6TH0
	2	Type	C/26P6AH0C/32P6AH0C/32A6A	19I6TH0C	22P6TF0C	26P6AH0C	32P6AH0C
			H0C/19I6TH0C/32D6AH0C/32A
			6AH1C/32L6AH0C
	3	Model	LD400/LD400_19/LD400_FHD	LD400	LD400	LD400	LD400
	4	TUNER	XUGUANG/SEMCO	XUGUANG	XUGUANG	XUGUANG	XUGUANG
			SUWON/SESK/SEH/TTSEC/
	5	Ch Table	SEIN/SDMA/TSED/SAVINA/	-	-	-	-
			SIEL_C/SIEL_N/TSE
	6	Local set	East Aisa/Africa/Vietnam/China/	East Aisa	East Aisa	East Aisa	East Aisa
			India/Iran/Israel/Middle Asia
	7	P&P	English/Thai/	English	English	English	English
		Language	China/Vietnam/Indonisia
	 LD400 (India, Vietnam)
	Model Name			LA19D400E1	LA22D400E1R	LA26D400E1	LA32D400E1
			Vendor	CPT	CMI	CMI	CMI
		Panel	CODE	BN07-00941A	BN07-00888A	BN07-00950A	BN07-00951B
			SPEC	CLAA185WA03-A	M215H1-L03	V260B3-L08	V315B5-L13
			Vendor	PowerNet	SEM	SEM	SEM
		SMPS	CODE	BN44-00436B	BN44-00437C	BN44-00438E	BN44-00438E
			SPEC	II19HD_BPN	HD_BSM	II2632F1_BSM	II2632F1_BSM
	Byte	Item	Adjustment Range		ASIA Ready
	1	Factory Reset	-
			19A6TH0C/22P6TH0C/22I6TH0
	2	Type	C/26P6AH0C/32P6AH0C/32A6A	19I6TH0C	22P6TF0C	26P6AH0C	32P6AH0C
			H0C/19I6TH0C/32D6AH0C/32A
			6AH1C/32L6AH0C
	3	Model	LD400/LD400_19/LD400_FHD	LD400	LD400	LD400	LD400
	4	TUNER	XUGUANG/SEMCO	XUGUANG	XUGUANG	XUGUANG	XUGUANG
			SUWON/SESK/SEH/TTSEC/
	5	Ch Table	SEIN/SDMA/TSED/SAVINA/	-	-	-	-
			SIEL_C/SIEL_N/TSE
	6	Local set	East Aisa/Africa/Vietnam/China/	India	India	India	India
			India/Iran/Israel/Middle Asia
	7	P&P	English/Thai/	English	English	English	English
		Language	China/Vietnam/Indonisia

2-5

2. Product specifications

2-3. Specification Comparison to Old Models

O : application, X : non-application

Model			D400 (LA**D400)	D400 (LA32D400)
Design
Display Type			LCD TV	LCD TV
Built-in Tuner			O	O
Resolution			1366X768 (22" : 1920X1080)	1366X768
LCD Panel			TFT LCD Panel 60Hz	TFT LCD Panel 60Hz
Screen Size			19"/22"/26"/32"	32"
Picture ratio			16 : 9	16:9
	19"		18.2 x 6.3 x 13.7 inchs _with stand
Dimensions (W x H x D)	22"		21.0 x 6.8 x 15.4 inchs _with stand	30.9 x 22.0 x 9.7 inchs _with stand
	26"		25.5 x 8.7 x 19.3 inchs _with stand
	32"		30.9 x 9.9 x 22.3 inchs _with stand
	19"		8.8 Ibs_with stand
Weight	22"		11.2 Ibs_with stand	21.16 Ibs_with stand
	26"		14.6 Ibs_with stand
	32"		23.6 Ibs_with stand
Dynamic Contrast Ratio			High Contrast	High Contrast
Picture Engine			No (DNIe : SEMS)	No (DNIe : SEMS)
Equalizer			O	O
Auto Volume Control			O	O
Sound System			SRS TheaterSound HD	SRS TruSound HD
	19"/22"		3W + 3W
Speaker Output	26"		5W + 5W	5W + 5W
	32"		10W + 10W
PIP			X	O
Double Window			X	X
TTX			X	X
Entertainment Mode			X	X
Game Mode			O	O
Energy Saving			O	O
Anynet+			X	X
Antenna			1(Air)	1(Air)

2-6

2. Product specifications

2-4. New Features explanation

2-4-1. Media_Play

Advanced Features

2-7

2. Product specifications

Advanced Features

2-8

2. Product specifications

2-9

2. Product specifications

2-10

2. Product specifications

2-5. Accessories

Product

Description

Model

Code. No

Remark

	Remote Control & Batteries	400	AA59-00499A
	(AAA x 2)		4301-000121

						Power Cord	ALL	3903-000607
								19" : BN90-03252A
						Stand	400	22" : BN90-03253A
								26" : BN90-03267B
								32" : BN90-03268B
									Samsung Electronics
						Screw	400	6002-001294	Service center
						(M4 x L16)

	Quick Start Guide	400	BN68-03417A

	Cleaning Cloth	ALL	BN63-01798B
	Warranty Card / Registration		BN68-00774D
	Card / Safety Guide Manual	ALL
			AA68-03242M
	(Not available in all locations)

2-11

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