Samsung PL42B450B1XZD, PL50B450B1XZD Schematic

PLASMA DISPLAY TV

Leandro Palmeira

Chassis : F67A(N_HD)_B450 Model : PL42B450B1XZD

SERVICE

PL50B450B1XZD

Manual

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.

GSPN (Global Service Partner Network)

Leandro Palmeira

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

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.

Printed in Korea

AA82-05826A

Table of Contents

Leandro Palmeira

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

■ 2-2 Specifications Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

■ 2-3 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Chapter 3 Disassembly & Reassembly

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

Chapter 4 Troubleshooting

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

■ 4-2 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

■ 4-3 Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38

Chapter 5 Exploded View & Part List

■ 5-1 PL42B450B1XZD Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

■ 5-2 PL50B450B1XZD Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

■ 5-3 PL42B450B1XZD Service Item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

■ 5-4 PL50B450B1XZD Service Item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Chapter 6 Wiring Diagram

■ 6-1 Overall Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

1. Precaution

Leandro Palmeira

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

Precaution

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 UNDER

TEST

EXPOSED METAL

2-WIRE CORD

ALSO TEST WITH

PLUG REVERSED (USING AC ADAPTER PLUG AS REQUIRED)

TEST ALL

SURFACES

LEAKAGE CURRENT

TESTER

NOT BE ABOVE

0.5mA)

EARTH

GROUND

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.

6. Warning - Hot Chassis: Some TV chassis are directly connected to one end of the AC power cord for electrical reasons. Without insulated transformers, the product can only be repaired safely when the chassis is connected to the earth end of the AC power source.

To make sure the AC power cord is properly connected, follow the instructions below. Use the voltmeter to measure the voltage between the chassis and the earth 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

Leandro Palmeira

10. 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.

1-2 Samsung Electronics

1-2 Servicing Precautions

Leandro Palmeira

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.

Precaution

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

6. Insulation Check Process: Unplug the power cord from the AC source and turn the switch on. Connect the insulating resistance meter (500v) to the AC plug blade.

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 last.

9. Beware of risks of any current leakage coming into contact with the high-capacity capacitor.

10. The sharp edges of the metal material may cause physical damage, so protect yourself by wearing gloves during the repair.

11. Due to the nature of plasma display panels, partial afterimages may appear if a 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 contrast are reduced. (e.g.) Contrast: 25, Brightness: 50

The insulating resistance between the blade of the AC plug and that of the conductive material should be more

than 1 ㏁.

Samsung Electronics 1-3

Precaution

Leandro Palmeira

1-3 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.

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.

8. Remove the protective material from the ESD replacement lead immediately after connecting it to the chassis or circuit assembly.

9. Take extreme caution in handling any uncovered ESD replacements. Actions such as brushing clothes or lifting your leg 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

1-4 Installation Precautions

Leandro Palmeira

Precaution

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.

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.

9. When moving a PDP with removable speakers, detach the speakers first before moving the main body. Moving the PDP main body without separating the speakers may cause the speakers to detach, possibly causing damage or injury.

Samsung Electronics 1-5

MEMO

Leandro Palmeira

1-6 Samsung Electronics

Product Specification

Leandro Palmeira

2. 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

Video

Sound SRS TruSuround HD SEMS03(LOLA3)

Cabinet B450 Design

Model PS42B450B1D PS50B450B1D

Screen Size 42 Inches (16:9) 50 Inches (16:9)

Dimensions (WxHxD)

Weight

PC Resolution 1024 x 768 @ 75Hz 1360 x 768 @ 60Hz

Power consumption 250W 370W

Voltage AC 100~240V, 60Hz

ANTENNA input

Samsung/Dong-yang electro mechanics SMPS

tri-norma HDMI Component, PC

41.5 x 2.9 x 28.3 inches (without stand)

41.5 x 12.4 x 28.3 inches (with stand)

53.1 lbs (without stand)

61.2 lbs (with stand)

Specification

※75Ω

SEMS03(LOLA3)

48.0x 2.9x 29.4 inches (without stand)

48.0 x 12.4 x 31.8 inches (with stand)

69.0 lbs (without stand)

77.1 lbs (with stand)

ANT AIR IN

unbalanced

AV1, AV2 COMPONENT1 - 480i/480p/720p/1080i/1080p COMPONENT2 - 480i/480p/720p/1080i/1080p

VIDEO input

HDMI2(DVI Compatible) - 480p/720p/1080i/1080p

480i can be displayed on HDMI, however it is not contained in EDID data

＊

AUDIO input

Audio Output AUDIO (L/R)

Speaker Output 10W+10W (40dB+40dB)

New Features Anynet+

Samsung Electronics 2-1

HDMI1 : 480p/720p/1080i/1080p

HDMI3(SIDE AV) - 480p/720p/1080i/1080p

COMPONENT1 - 480i/480p/720p/1080i/1080p COMPONENT2 - 480i/480p/720p/1080i/1080p

AV1, AV2

PC & DVI

Product Specification

■

Leandro Palmeira

■

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.

2-2 Samsung Electronics

Product Specification

Leandro Palmeira

2-2 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

Picture

Audio

Features

Connections

ETC Speaker/Stand Built-in Speaker Built-in Speaker Built-in Speaker Built-in Speaker

Screen Size 42" 50" 42" 50"

Picture ratio 16 : 9 16 : 9 16 : 9 16 : 9

Dimensions (WxHxD)

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

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

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

TTX

Still Image X X X X

Energy Saving

Anynet

Antenna 1(Cable or Air) 1(Cable or Air) 1(Cable or Air) 1(Cable or Air)

AV Input 2 2 1 1

S-Video X X 1 1

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

41.53 x 12.44 x 28.38 inches (1055 x 316 x 721mm)

○ ○ ○ ○

48.03 x 12.44 x 31.88 inches (1220 x 316 x 810mm)

41.53 x 28.54 x 12.44 inches (1055 x 316 x 725 mm)

48.46 x 32.00 x 12.44 inches (1231 x 813 x 316 mm)

Samsung Electronics 2-3

Product Specification

Leandro Palmeira

2-3 Accessories

Accessories Item Item code Remark

Supplied Accessories

Remote Control

Batteries

Power Cord 3903-000195

Owner's Instructions BN68-01924A

Warranty Card

Registration Card

Safety Guide Manual

Cloth-Clean BN63-01798B

Ferrite Core for

Power Cord

BN59-00868A

4301-000103

3301-001305

Samsung Service center

Sold Separately

Cover-Bottom Screws (2ea)

HDMI Cable

9.843 feet

HDMI/DVI cable

9.843 feet

Component Cables (RCA)

4.171 feet

BN63-05300A

6003-001621

BN39-00641A

BN39-00643A

BN39-00279A

Electronics Store/

Internal shopping mall

2-4 Samsung Electronics

Product Specification

Leandro Palmeira

Accessories Item Item code Remark

Sold Separately

PC Cable

6.004 feet

PC Audio Cable

6.562 feet

Antenna Cable

9.843 feet

BN39-00115A

BN39-00061B

BN39-00333A

Electronics Store/

Internal shopping mall

Samsung Electronics 2-5

MEMO

Leandro Palmeira

2-6 Samsung Electronics

Troubleshooting

Leandro Palmeira

4. 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 Board, between the SMPS ↔ X, YMain Board, and between the Logic Boards.

Samsung Electronics 4-1

Troubleshooting

■

Leandro Palmeira

4-1-2 Checkpoints by Error Mode

■

No Power (42")

- The LEDs on the front panel do not work when connecting the power cord.

Symptom

Major Checklist

- 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:

- 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

①

②

Is the AC IN socket connector and

the SMPS CN800S connected?

Yes

Is the Fuse (F801S) of the SMPS

Power Input Part blown?

SMPS CN801

Pin 3 : STB 5V

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

Yes

Replace the Main Board

Yes

Insert the AC in connector and the

SMPS CN800S connector

Replace Fuse (F801S)

Replace the SMPS

4-2 Samsung Electronics

■

Leandro Palmeira

No Power (50")

Symptom

Major Checklist

Troubleshooting

- The LEDs on the front panel do not work when connecting the power cord.

- 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:

- 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

①

②

Is the AC IN socket connector and

the SMPS CN800S connected?

Yes

Is the Fuse (F801S) of the SMPS

Power Input Part blown?

SMPS CN801

Pin 3 : STB 5V

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

Yes

Replace the Main Board

Yes

Insert the AC in connector and the

SMPS CN800S connector

Replace Fuse (F801S)

Replace the SMPS

Samsung Electronics 4-3

Troubleshooting

■

Leandro Palmeira

■

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.

- Disconnect all cables from the SMPS, operate the SMPS alone and check if the SMPS works properly and if

Major Checklist

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

Procedures

Caution

Does the symptom continue when

connecting the power after removing

①

②

③

When separating and connecting the cables such as CN810, CN809, CN808, CN807 of the Main SMPS, CN4701 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.

CN810 from the SMPS?

Yes

Does the symptom continue when

connecting the power after removing

CN809 from the SMPS?

Yes

Does the symptom continue when

connecting the power after removing

CN807 from the SMPS?

Yes

Replace the SMPS

Replace the Y Main Board

Replace the X Main Board

Replace the Logic Board

4-4 Samsung Electronics

■

Leandro Palmeira

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.

- Disconnect all cables from the SMPS, operate the SMPS alone and check if the SMPS works properly and if

Major Checklist

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

Procedures

Caution

Does the symptom continue when

connecting the power after removing

①

②

③

CN804 from the SMPS?

Yes

Does the symptom continue when

connecting the power after removing

CN803 from the SMPS?

Yes

Does the symptom continue when

connecting the power after removing

CN802 from the SMPS?

Yes

Replace the SMPS

Replace the Y Main Board

Replace the X Main Board

Replace the Logic Board

Samsung Electronics 4-5

+ 45 hidden pages