Samsung PL42B450B1XZD, PL50B450B1XZD Schematic

PLASMA DISPLAY TV

Chassis: F67A(N_HD)_B450

Model : PL42B450B1XZD

PL50B450B1XZD

		Palmeira
SERVICE Manual
	Leandro
	PLASMA DISPLAY TV				CONTENTS
		1.			Precaution
		2.			Product Specification
		3.			Disassembly & Reassembly
		4.			Troubleshooting
		5.			Exploded View & Part List
		6.			Wiring Diagram

PL42B450B1

PL50B450B1

Refer to the service manual in the GSPN (see the rear cover) for the more information.

	Leandro
GSPN (Global Service Partner Network)
Area	Web Site
North America	service.samsungportal.com
Latin America	latin.samsungportal.com
CIS	cis.samsungportal.com
Europe	europe.samsungportal.com
China	china.samsungportal.com
Asia	asia.samsungportal.com
Mideast & Africa	mea.samsungportal.com

Palmeira

This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.

©Samsung Electronics Co., Ltd. Apr. 2009 Printed in Korea

AA82-05826A

Table of Contents

Chapter 1 Precaution

■ 1-1 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 ■ 1-2 Servicing Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 ■ 1-3 Static Electricity Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 ■ 1-4 Installation Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Chapter 2 Product Specification

■ 2-1	Product Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
■ 2-2	Specifications Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
■ 5-1	PL42B450B1XZD Exploded View . . .Palmeira. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
■ 2-3	Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 3 Disassembly & Reassembly

■ 3-1 Overall Disassembly & Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 4 Troubleshooting

■ 4-1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

■ 4-2 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

■ 4-3 Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

	Leandro
Chapter 5 Exploded View & Part List
■ 5-2 PL50B450B1XZD Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
■ 5-3	PL42B450B1XZD Service Item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
■ 5-4	PL50B450B1XZD Service Item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 6 Wiring Di gr m
■ 6-1	Ov rall Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1

2-3

2-4

3-1

4-1

4-18

4-38

5-1

5-3

5-5

5-6

6-1

Precaution

Precaution

To avoid possible damage, electric shocks or exposure to radiation, follow the instructions below with regard to safety, installation, service and ESD.

1-1 Safety Precautions

1. Make sure all protective devices are properly installed including non-metallic handles and compartment covers when installing or re-installing the chassis or chassis assemblies.

2. Make sure that no gaps exist between the cabinets for children to insert their fingers in to prevent children from receiving electric shocks. Gaps mentioned above include ventilation holes between the PDP module and the cabinet mask, and the improper installation of the rear cabinet.

Errors may occur when the resistance is below 1.0 or

over 5.2 .

In these cases, make sure that the device is repaired before sending it back to the customer.

3. Check for Electricity Leakage (Figure 1-1)

Warning: Do not use an insulated transformer for checking the leakage. Use only those current leakage testers or mirroring systems that comply with ANSIC 101.1 and the Underwriter Laboratory's specifications (UL1410, 59.7).

					(READING SHOULD
DEVICE			LEAKAGE		NOT BE ABOVE
			CURRENT				0.5mA)
UNDER			TESTER
TEST
	TEST ALL
EXPOSED METAL
SURFACES
2-WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER							EARTH
PLUG AS REQUIRED)						GROUND
		Leandro
Fig. 1-1 AC Leakage Test

4.A high voltage is maintained within the specified limits using safety parts, calibration and tolerances. When voltage exceeds the specified limits, check each special

part.

5. Warning for Engineering Changes:

Never make any changes or additions to the circuit
design or the internal part for this product.
Ex: Do not add any audio or video accessory
connectors. This might cause physical damage.
Furthermore, any changes or additions to the original
design/engineering will invalidate the warranty.
Palmeira
6. Warning - Hot Ch			ssis:
Some TV chassis			e di ectly connected to one end of
the AC power co d for electrical reasons.
Without insulat d transformers, the product can only be
repair		d saf ly wh	n the chassis is connected to the
earth		nd of the AC power source.
To	ake sure the AC power cord is properly connected,
fo ow the instructions below. Use the voltmeter to
	sure the voltage between the chassis and the
e	rth ground. If the measurement is over 1.0V, unplug

the AC power cord and change the polarity before reinserting it. Measure the voltage between the chassis and the ground again.

7.Some TV chassis are shipped with an additional secondary grounding system. The secondary system is adjacent to the AC power line. These two grounding systems are separated in the circuit using an unbreakable/unchangeable insulation material.

8.When any parts, material or wiring appear overheated or damaged, replace them with new immediately. When any damage or overheating is detected, correct this immediately and make a regular check of possible errors.

9.Check for the original shape of the lead, especially that of the antenna wiring, any sharp edges, the AC power and the high voltage power. Carefully check if the wiring is too tight, incorrectly placed or loose. Never change the space between the part and the printed circuit board. Check the AC power cord for possible damages. Keep the part or the lead away from any heat-emitting materials.

Samsung Electronics

1-1

Precaution
Safety Indication:
Some electrical circuits or device related materials
require special attention to their safety features, which
cannot be viewed by the naked eye. If an original part is
replaced with another irregular one, the safety or
protective features will be lost even if the new one has a
higher voltage or more watts.
Critical safety parts should be bracketed with (	! ).
Use only regular parts for replacements (in particular,
flame resistance and dielectric strength specifications).
Irregular parts or materials may cause electric shock or
fire.
Leandro		Palmeira

1-2	Samsung Electronics

Precaution

Servicing Precautions

Warning 1: First carefully read the "Safety Instruction" in this service manual.

When there is a conflict between the service and the safety instructions, follow the safety instruction at all times.

Warning 2: Any electrolytic capacitor with the wrong polarity will explode.

1.The service instructions are printed on the cabinet, and should be followed by any service personnel.

2.Make sure to unplug the AC power cord from the power source before starting any repairs.

(a)Remove or re-install parts or assemblies.

(b)Disconnect the electric plug or connector, if any.

(c)Connect the test part in parallel with the electrolytic capacitor.

3.Some parts are placed at a higher position than the printed board. Insulated tubes or tapes are used for this purpose. The internal wiring is clamped using buckles to avoid contact with heat emitting parts. These parts are installed back to their original position.

4.After the repair, make sure to check if the screws, parts or cables are properly installed. Make sure no damage is caused to the repaired part and its surroundings.

5.Check for insulation between the blade of the AC plug

6. Insulation Check Process: Unplug the power co f om the AC source and turn the switch on. Connect the insulating resistance meter (500v) to the AC plug bla e.

and that of any conductiveLeandromaterials (i.e. the metal panel, input terminal, earphone jack, etc).

The insulating resistance between the bl de of the AC plug and that of the conductive m teri l should be more than 1 .

7.Any B+ interlock should not be damaged.

If the metal heat sink is not properly installed, no connection to the AC power should be made.

8.Make sure the grounding lead of the tester is connected to the chassis ground before connecting to the positive lead. The ground lead of the tester should be removed

Palmeira
	last.
9.	Beware of risks of ny cu rent leakage coming into
	contact with the h gh-capacity capacitor.
10.	The sharp dg	s of the metal material may cause
	physical damag	, so protect yourself by wearing gloves
	during the repair.
11.	Due to the nature of plasma display panels, partial after-
	im ges may appear if still picture is displayed on the
	screen for a long period of time.
	This is caused by brightness deterioration due to the
	storage effect of the panel, and to prevent this from
	happening, we recommend that the brightness and con-
	trast are reduced.
	(e.g.) Contrast: 25, Brightness: 50

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1-3

Precaution

Static Electricity Precautions

1.Some semi-conductive ("solid state") devices are vulnerable to static electricity. These devices are known as ESD. ESD includes the integrated circuit and the field effect transistor. To avoid any materials damage from electrostatic shock, follow the instructions described below.

2.Remove any static electricity from your body by connecting the earth ground before handling any semi-conductive parts or assemblies. Alternatively, wear a dischargeable wrist-belt.

(Make sure to remove any static electricity before connecting the power source - this is a safety instruction for avoiding electric shock)

3.Remove the ESD assembly and place it on a conductive surface such as aluminum foil to prevent accumulating static electricity.

4.Do not use any Freon-based chemicals.

Such chemicals will generate static electricity that causes damage to the ESD.

5.Use only grounded-tip irons for soldering purposes.

Leandro

6.Use only anti-static solder removal devices. Most solder removal devices do not support an

anti-static feature. A solder removal device without an anti-static feature can store enough static electricity to cause damage to the ESD.

7.Do not remove the ESD from the protective box until the replacement is ready. Most ESD replacements are covered with lead, which will cause a short to the entire unit due to the conductive foam, aluminum foil or other conductive materials.

Palmeira
8.	Remove the protective material from the ESD
	replacement lead immedi tely after connecting it to the
	chassis or ci cuit ssembly.
9.	Take extreme caut on n handling any uncovered ESD
	replac	m nts. Act ons such as brushing clothes or lifting
	your	g from the carpet floor can generate enough static

electricity to damage the ESD.

CAUTION

These servicing instructions are for use by qualified service personnel only.

To reduce the risk of electric shock do not

perform any servicing other than that contained in the operating instructions unless you are qualified to do so.

1-4	Samsung Electronics

Precaution

Installation Precautions

1. For safety reasons, more than two 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. Leandro

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

7.When connecting the RF antenna, check for a DTV receiving system and install a separate DTV reception antenna for areas with no DTV signal.

8.When installing the product, leave enough space (4") between the product and the wall for ventilation purposes.

A rise in temperature within the product may cause fire.

Palmeira9. When moving PDP with removable speakers, detach the speakers fi st befo e moving the main body.

Moving the PDP m n body without separating the speakers may cause the speakers to detach, possibly causing damage or njury.

Samsung Electronics

1-5

MEMO

Leandro	Palmeira

1-6	Samsung Electronics

Product Specification

Product Specification

2-1 Product Specification

Features

Block	Specification	Major IC	Remark
RF	Analog Tuner	TCPN3081PA11S(H)
PDP Module	Samsung SDI U1P Module	42"HD/50"HD	New Module
Power	Samsung/Dong-yang electro
	mechanics SMPS
Video	tri-norma	SEMS03(LOLA3)
	HDMI
	Component, PC
Sound	SRS TruSuround HD	SEMS03(LOLA3)
Cabinet	B450 Design

Specification

Model	PS42B450B1D						PS50B450B1D
Screen Size	42 Inches (16:9)						50 Inches (16:9)
Dimensions (WxHxD)	41.5 x 2.9 x 28.3 inches (without st nd)						48.0x 2.9x 29.4 inches (without stand)
	41.5 x 12.4 x 28.3 inches (with st				nd)		48.0 x 12.4 x 31.8 inches (with stand)
Weight	53.1 lbs (without stand)						69.0 lbs (without stand)
	61.2 lbs (with stand)						77.1 lbs (with stand)
PC Resolution	1024 x 768 @ 75Hz						1360 x 768 @ 60Hz
				Palmeira
Power consumption	250W							370W
Voltage					AC 100~240V, 60Hz
ANTENNA input						ANT AIR IN
					75Ω unbalanced
						AV1, AV2
		COMPONENT1 - 480i/480p/720p/1080i/1080p
		COMPONENT2 - 480i/480p/720p/1080i/1080p
VIDEO input						PC
			HDMI1 : 480p/720p/1080i/1080p
	HDMI2(DVI Compatible) - 480p/720p/1080i/1080p
		HDMI3(SIDE AV) - 480p/720p/1080i/1080p
	Leandro480i can be displayed on HDMI, however it is not contained in EDID data
						AV1, AV2
AUDIO input		COMPONENT1 - 480i/480p/720p/1080i/1080p
		COMPONENT2 - 480i/480p/720p/1080i/1080p
						PC & DVI
Audio Output						AUDIO (L/R)
Speaker Output					10W+10W (40dB+40dB)
New Features						Anynet+

Samsung Electronics

2-1

Specification

New Features explanation

Anynet+ : Anynet+ is an AV network system that enables you to control all connected Samsung AV devices with your Samsung TV's remote.

Leandro	Palmeira

2-2	Samsung Electronics

							Product Specification
Specifications Analysis
						○: application, X: non-application
	Model		PL42B450B1		PL50B450B1	PL42B450P1	PL50B450P1
	Design
	Display Type		PDP TV		PDP TV	PDP TV	PDP TV
	Built-In Tuner		X		X	X	X
	Resolution		1024 x 768		1365 x 768	1024 x 768	1365 x 768
	PDP Module		U1P		U1P	W3	W3
Basic	Screen Size		42"		50"	42"	50"
	Picture ratio		16 : 9		16 : 9	16 : 9	16 : 9
			41.53 x 12.44 x 28.38 inches	48.03 x 12.44 x 31.88 inches		41.53 x 28.54 x 12.44 inches	48.46 x 32.00 x 12.44 inches
	Dimensions (WxHxD)				Palmeira
			(1055 x 316 x 721mm)		(1220 x 316 x 810mm)	(1055 x 316 x 725 mm)	(1231 x 813 x 316 mm)
	Weight		61.28lbs (27.8kg)		77.16lbs (35.0kg)	31 kg	37 kg
	Brightness		1,500 Cd/m2		1,300 Cd/m2	1,500 Cd/m2	1,500 Cd/m2
Picture	Contrast Ratio		10000:1		10000:1	10000:1	10000:1
	Picture Enhacer		X		X	FBE3	FBE3
	Comb Filter		○		○	○	○
	Equalizer		5 Band		5 Band	5 Band	5 Band
Audio	Auto Volume Control		○		○	○	○
	Surround Sound		SRS TruSurround HD		SRS TruSurround HD	SRS TruSurround XT	SRS TruSurround XT
	Speaker Output		10W + 10W		10W + 10W	10W + 10W	10W + 10W
	PIP		○		○	○	○
	Double Window		X		X	X	X
Features	TTX		○		○	○	○
	Still Image		Leandro		X	X	X
			X
	Energy Saving		○		○	○	○
	Anynet		○		○	○	○
	Antenna		1(Cable or Ai )		1(Cable or Air)	1(Cable or Air)	1(Cable or Air)
	AV Input		2		2	1	1
	S-Video		X		X	1	1
Connections	Component		2		2	2	2
	PC(D-SUB)		1		1	1	1
	DVI		X		X	X	X
	HDMI		3		3	3	3
	Optical		X		X	1	1
ETC	Speaker/Stand		Built-in Speaker		Built-in Speaker	Built-in Speaker	Built-in Speaker

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2-3

Specification

Accessories

Accessories	Item	Item code
	Remote Control	BN59-00868A
	Batteries	4301-000103
	Power Cord	3903-000195

	Owner's Instructions	BN68-01924A
Accessories	Registration Card	-
	Warranty Card	Palmeira
		-
Supplied	Safety Guide Manual	-
	Cloth-Clean	BN63-01798B
	Ferrite Core for	3301-001305
	Power Cord
	Leandro	BN63-05300A
	Cover-Bottom
	Screws (2ea)	6003-001621
	HDMI Cable	BN39-00641A
Separately	9.843 feet
	9.843 feet	BN39-00643A
	HDMI/DVI cable
Sold
	Component Cables (RCA)	BN39-00279A
	4.171 feet

Remark

Samsung Service center

Electronics Store/ Internal shopping mall

2-4	Samsung Electronics

Product Specification

Sold Separately

Accessories	Item	Item code	Remark
	PC Cable	BN39-00115A
	6.004 feet
	PC Audio Cable	BN39-00061B	Electronics Store/
	6.562 feet		Internal shopping mall
	Antenna Cable	BN39-00333A
	9.843 feet
		Palmeira
	Leandro

Samsung Electronics

2-5

MEMO

Leandro	Palmeira

2-6	Samsung Electronics

Troubleshooting

Troubleshooting

4-1 Troubleshooting

4-1-1 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 or loose cable connection.

-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 SMPS ↔ Main Logic Boards.

Leandro

Board, between the SMPS ↔ X, Y Main Board, and between the Palmeira

Samsung Electronics

4-1

Troubleshooting

-2 Checkpoints by Error Mode

■ No Power (42")

		- The LEDs on the front panel do not work when connecting the power cord.
	Symptom	- The SMPS relay does not work when connecting the power cord.
		- The units appears to be dead.
		The SMPS relay or the LEDs on the front panel does not work when connecting the power cord if the cables
		are improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:
	Major Checklist	- Check the internal cable connection status inside the unit.
		- Check the fuses of each part.
		- Check the output voltage of SMPS.
		- Replace the Main Board.

Troubleshooting

Procedures

					Palmeira
	LeandroYes
		Is the AC IN socket connector and					No			Insert the AC in connector and the
		the SMPS CN800S connected?								SMPS CN800S connector
				Yes
		Is the Fuse (F801S) of the SMPS					Yes
										Replace Fuse (F801S)
		Power Input Part blown?
				No
		SMPS CN801
							No
		Pin 3 : STB 5V								Replace the SMPS
		Pin 2 PS-ON : Check to see if it is 0V

Replace the Main Board

4-2	Samsung Electronics

Troubleshooting

■ No Power (50")

		- The LEDs on the front panel do not work when connecting the power cord.
	Symptom	- The SMPS relay does not work when connecting the power cord.
		- The units appears to be dead.
		The SMPS relay or the LEDs on the front panel does not work when connecting the power cord if the cables
		are improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:
	Major Checklist	- Check the internal cable connection status inside the unit.
		- Check the fuses of each part.
		- Check the output voltage of SMPS.
		- Replace the Main Board.

Troubleshooting

Procedures

Palmeira

Leandro

Is the AC IN socket connector and

No

Insert the AC in connector and the

the SMPS CN800S connected?

SMPS CN800S connector

Yes

Is the Fuse (F801S) of the SMPS

Yes

Replace Fuse (F801S)

Power Input Part blown?

No

SMPS CN801

No

Pin 3 : STB 5V

Replace the SMPS

Pin 2 PS-ON : Check to see if it is 0V

Yes

Replace the Main Board

Samsung Electronics

4-3

Troubleshooting

When the unit is repeatedly turned on and off (42")

Symptom	- The SMPS relay is repeatedly turned on and off.
	In general, the SMPS relay repeatedly turns on and off by the protection function due to a defect on a board
	connected to the SMPS.
Major Checklist	- Disconnect all cables from the SMPS, operate the SMPS alone and check if the SMPS works properly and if
	each voltage output is correct.
	- If the symptom continues even when SMPS is operated alone, replace the SMPS.
	- If the symptom is not observed when operating the SMPS alone, find any defective assemblies by connecting
	the cables one by one.

Troubleshooting		Does the sympt m c ntinuePalmeirawhen
Procedures
	LeandroReplace the SMPS
							No			Replace the Y Main Board
		connecting the p wer after removing
		CN810 f om the SMPS?
				Yes
		Does the symptom continue when
							No
		co ecti g the power after removing								Replace the X Main Board
		CN809 from the SMPS?
				Yes
		Does the symptom continue when
							No
		connecting the power after removing								Replace the Logic Board
		CN807 from the SMPS?
				Yes

When separating and connecting the cables such as CN810, CN809, CN808, CN807 of the Main SMPS, CN4701 Caution of the X Main Board, and CN5707 of the Y Main Board, a spark may be generated by the electric charge of the

high capacity capacitor. Therefore, wait some time after disconnecting the power cord from the unit.

4-4	Samsung Electronics

Troubleshooting

When the unit is repeatedly turned on and off (50")

Symptom	- The SMPS relay is repeatedly turned on and off.
	In general, the SMPS relay repeatedly turns on and off by the protection function due to a defect on a board
	connected to the SMPS.
Major Checklist	- Disconnect all cables from the SMPS, operate the SMPS alone and check if the SMPS works properly and if
	each voltage output is correct.
	- If the symptom continues even when SMPS is operated alone, replace the SMPS.
	- If the symptom is not observed when operating the SMPS alone, find any defective assemblies by connecting
	the cables one by one.

Troubleshooting		Does the sympt m c ntinuePalmeirawhen
Procedures
	LeandroReplace the SMPS
							No			Replace the Y Main Board
		connecting the p wer after removing
		CN804 f om the SMPS?
				Yes
		Does the symptom continue when
							No
		co ecti g the power after removing								Replace the X Main Board
		CN803 from the SMPS?
				Yes
		Does the symptom continue when
							No
		connecting the power after removing								Replace the Logic Board
		CN802 from the SMPS?
				Yes

When separating and connecting the cables such as CN810, CN809, CN808, CN807 of the Main SMPS, CN4701 Caution of the X Main Board, and CN5707 of the Y Main Board, a spark may be generated by the electric charge of the

high capacity capacitor. Therefore, wait some time after disconnecting the power cord from the unit.

Samsung Electronics

4-5