Samsung PL50P5HX/STR Schematic

PLASMA DISPLAY TV

Chassis : D72A(N)_Puccini Model : PL50P5HX/STR

PLASMA DISPLAY TV FEATURES

■■

DTV Ready PDP TV

■

2 Way 4 Speakers

■

1 HDMI input

■

Slim line design

■

Energy Saving

■

12 Bit image processing

(687 billion color)

SERVICE

Manual

PL-50P5H

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

AA82-03008A

ELECTRONICS

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

■ 2-2 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

■ 2-3 Specifications Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

■ 2-4 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Chapter 3 Alignment & Adjustment

■ 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

■ 3-5 Software Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

■ 3-6 Replacements & Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Chapter 4 Exploded View & Part List

■ 4-1 PL50P5HX/STR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Chapter 5 Electrical Part List

■ 5-1 PL50P5HX/STR Service Item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Chapter 6 Troubleshooting

■ 6-1 First Checklist for Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

■ 6-2 Checkpoints by Error Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

■ 6-3 Troubleshooting Procedures by ASS'Y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Chapter 7 Block Diagram

■ 7-1 Overall Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

■ 7-2 Partial Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Chapter 8 Wiring Diagram

■ 8-1 Overall Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

■ 8-2 Partial Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

Chapter 9 PCB Diagram

■ 9-1 PDP Module, SMPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

■ 9-2 Video Board, Function Key Borad, Power Button Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Chapter 10 Schematic Diagram

■ 10-1 Main . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

■ 10-2 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-14

■ 10-3 Power/IR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-15

Operation Instruction & Installation

Samsung Electronics 11-1

11. Operation Instruction & Installation

11-1 Product Features and Functions

11-1-1 Front Panel

1 SOURCE button

Press to display all of the available video sources (TV, AV, S-Video, Component1, Component2, PC, and HDMI).

2 MENU button

Displays the main on-screen menu.

3 VOL +, -buttons

Press to increase or decrease the volume. Also used to select or adjust items on the on-screen menu.

4 CH( , ) buttons

Press CH or CH to change channels. Also used to move up or down in the on-screen menu.

678

5 (Enter) button

Press to confirm a selection.

6 Power button

Press to turn the TV on and off. Power indicator

- Power Off : Blue

- Power On : Off

7 Remote Control Sensor

Aim the remote control towards this spot on the TV.

Speakers

Operation Instruction & Installation

11-2 Samsung Electronics

11-1-2 Rear Panel

1 POWER IN

Connect the supplied power cord.

2 SERVICE ONLY

Connector for service only.

3 HDMI/DVI IN

Connect to the HDMI jack of a device with HDMI output. These inputs can also be used as a DVI connection with separate analog audio inputs. An optional HDMI/DVI cable will be necessary to make this connection. When using the optional HDMI/DVI adapter, the DVI analog audio inputs on your TV allow you to receive left and right audio from your DVI device. (Not compatible with PC)

4 DVI AUDIO IN (AUDIO-L/R)

Connect to the DVI audio output jack of an external device.

5PC IN

Connect to the video output jack on your PC.

6 PC AUDIO IN

Connect to the audio output jack on your PC.

7 COMPONENT IN 1, 2

Video (Y/PB /PR) and audio (L-AUDIO-R) component inputs.

8 ANT IN

75 Ω Coaxial connector for Antenna/Cable Network.

9 AV OUT (VIDEO / AUDIO L/R)

Outputs for external devices.

10 AV IN (VIDEO / AUDIO L/R)

Video and audio inputs for external devices, such as a camcorder or VCR.

11 S-VIDEO

Video input for external devices with an S-Video output, such as a camcorder or VCR.

Operation Instruction & Installation

Samsung Electronics 11-3

11-1-3 Remote Control

Operation Instruction & Installation

11-4 Samsung Electronics

Operation Instruction & Installation

Samsung Electronics 11-5

11-2 New Features

11-2-1 Power Saving Mode (Applies to the "Settings" of the User Menu)

1. Objectives

- To enhance a sensible visual quality by maintaining an appropriate screen brightness according to the ambient brightness and to reduce power consumption.

- To improve the power consumption efficiency when Power Saving Mode is selected.

2. Details The CPU PW318 of the Video Board takes the current ambient brightness (in Lux units) stored in the Ambient Light Sensor of the Power Assy., which is attached at the front of the PDP, at given intervals through SMBUS communication (identical to I2C) and controls the PDP module to operate with the appropriate illuminance. The I2C bus is used to communicate with the PDPmodule, and the communication method is the same as the existing communication method.

- Location of the Ambient Light Sensor

The sensor is attached to the Power Assy., which is on the front of the PDP. The location of the sensor on the Power Assy. is displayed in the figure below. External light reaches the sensor through the guide of the Power Assy.

The screen brightness is adjusted according to the brightness measured by the Ambient Light Sensor, using the Multi APC function (controls the number of sustain pulses according to the average signal levels) of the PDP panel, thus reducing power

consumption.

The Ambient Light Sensor IC

detects the amount of illumination.

Operation Instruction & Installation

11-6 Samsung Electronics

11-2-2 PIP Settings (X - PIPdoesn't operate, O - PIPand swap operate)

Main screen

PIP screen

TV AV S-Video Component 1 Component 2 PC HDMI

TV X

○ ○ ○ ○ ○ ○

○

○ ○ ○ ○ ○

S-Video

○ ○

○ ○ ○ ○

Component 1 X X X X X X X Component 2 X X X X X X X

PC X X X X X X X

HDMI X X X X X X X

Note : This TV has only one tuner and does not allow you to watch one TV channel in the main screen and another channel in the

PIP screen.

Press the MENU button. Press the or button to select “Picture”, then press the ENTER button.

Quick way to select Energy Saving: Simply press the “E.SAVING” button on the remote control.

Press the or button to select “Energy Saving”, then press the ENTER button.

Press the or button to select submenu (Auto Saving, Standard, or Super Saving) you want, then press the

ENTER button.

• Auto Saving : Automatically adjusts to the surrounding illumination.

• Standard : Operates in standard mode

regardless of the surrounding illumination.

• Super Saving : Enters maximum power saving

mode regardless of the surrounding illumination.

Mode : Dynamic Size : Wide Digital NR : On DNIe Demo : Off My Color Control Energy Saving : Standard PIP

Mode : Dynamic Size : Wide Digital NR : On DNIe Demo : Off My Color Control

Energy Saving : Sta

PIP

Mode : Dynamic Size : Wide Digital NR : On DNIe Demo : Off My Color Control

Energy Saving : Stan

PIP

Picture

√ √ √ √ √ √ √

Move Enter Return

Picture

Auto Saving

Standard

Super Saving

Move Enter Return

Picture

Auto Saving

Standard

Super Saving

Move Enter Return

Press the EXIT button to exit.

Operation Instruction & Installation

Samsung Electronics 11-7

11-3 Installation Notes and Precautions

11-3-1 Installation Notes

1. Contact a technician for installing the wall bracket.

2. Samsung Electronics is not responsible for any damage to the product or injury to yourself or others if you elect to perform the wall installation.

3. This product is for installing on cement walls. The product may not stay in place when installed on plaster or wood.

11-3-2 Parts (Wall attachment panel is sold separately)

Only use the components and accessories shipped with the panel.

Wall Bracket Hinge Accessories

Plastic Hanger : 4

Screw : 4

Screw : 11

Anchor : 111 Left : 1 Right : 1

Operation Instruction & Installation

11-8 Samsung Electronics

11-3-3 How to assemble the Wall Mount Bracket

Insert and tighten the Captive Screw in the direction of the arrow. When done, mount the wall bracket on the wall.

Captive Screws

Hinge (Left)

Wall Bracket

Before drilling into the wall, check if the

length between the two locking holes at

the back of the product is correct. If the length is too short or long, loosen all or some of the 4 screws on the wall bracket to adjust the length.

Length between the two locking holes

There are two hinges (left and right). Use the correct one.

Hinge (Right)

Check the installation diagram and mark

the drill points on the wall.

Use the 5.0 mm bit to drill holes deeper than 35 mm. Fix each anchor in the corresponding hole. Match each of the brackets and hinge holes to the corresponding anchor holes and insert and tighten the 11 screws .

Operation Instruction & Installation

Samsung Electronics 11-9

11-3-4 Fixing the TV panel to the wall attachment panel bracket

Remove the 4 screws on the back of the product.

Insert the screw into the plastic hanger. (See the figure below)

• Mount the product on the wall bracket and make sure it is properly fixed to the left and right plastic hangers.

• Be careful when installing the product on the bracket as fingers can be caught in the holes.

• Make sure the wall bracket is securely fixed to the wall, or the product may not stay in place after installation.

Tighten the 4 screws in step 2 (plastic hanger + screw ) to the rear holes of

the product.

Remove safety pin ( ) and insert the 4 product holders into the corresponding

bracket holes ( ). Then place the product ( ) so that it is firmly fixed to the bracket. Make sure to reinsert and tighten the safety pin ( ) to securely hold the product to the bracket.

PDP

Wall Bracket Wall

Operation Instruction & Installation

11-10 Samsung Electronics

11-3-5 How to Adjust Mounting Angle

Note : Adjust the bracket angle to -2

Note

before installing it on the wall.

Change Angle

Fix the product to the wall bracket.

Hold the product at the top in the center and pull it forward (direction of the arrow) to

adjust the angle. (See the figure to the right)

You can adjust the bracket angle between -2° and 15°.

How to Adjust Mounting Angle

Make sure to use the top center, and not the left or the right side of the product to adjust the angle.

Notes

• Contact an authorized technician when installing the wall attachment panel.

• After hanging the TV panel on the wall attachment panel, make sure that the Insulation holders are completely secured.

• Be careful not to get your fingers caught during installation.

• Make sure the wall attachment panel brackets are tightened. Otherwise, the TV panel may fall down.

• Please secure the mounting bracket on the wall surface after setting its angle at 0°.

Operation Instruction & Installation

Samsung Electronics 11-11

11-3-6 How to assemble the Stand-Base

Using the 4 screws for securing the stand pegs and the monitor, firmly attach the monitor to the stand pegs. (The exterior of the set may be different than the picture.)

Warning

Firmly secure the stand to the TV before moving it, as the stand may fall and could cause serious injury.

Two or more people should carry the TV. Never lay the TV on the floor because of possible damage to the screen. Always store the TV upright.

11-12 Samsung Electronics

MEMO

Part Name Description Description Photo

Cover-

Stand

① Remove 4 screws on the SPEAKER-COVER

: BH,+,B,M4,L12,ZPC(BLK)

② Remove the SPEAKER-COVER.

Disassembly & Reassembly

Samsung Electronics 12-1

12. Disassembly & Reassembly

12-1 Overall Disassembly & Reassembly

12-1-1 Separation of Stand

Part Name Description Description Photo

Stand

① Remove 4 screws.

: PH,+,WSP,S,M4,L35,ZPC(BLK)

② Pull the stand down to remove it from the unit.

: Please lay the PDP unit face down on a soft surface when

removing the stand.

12-1-2 Separation of ASSY COVER-STAND CABLE

Notice

- Be sure to separate the power cord before disassembling the unit.

- Discharge the capacitors first when separating PCB's with high capacity capacitors such as SMPS, X Drive Board, Y Drive Board, etc. (Aspark may be generated by the electric charge, and there is danger of electronic shock.)

- Check that the cables are properly connected referring to the circuit diagram when disassembling or assembling the unit taking care not to damage the cables.

- Take care not to cause a flaw in the Glass Filter in the front.

- Assemble the boards in the reverse order of the disassembly.

- The plasma must be layed down on a flat padded surface for disassembly and reassembly.

Disassembly & Reassembly

12-2 Samsung Electronics

12-1-3 Separation of ASSY COVER P-REAR TOP

Part Name Description Description Photo

Rear

Top

① Remove the 9 screws on the cover rear.

: BH,+,-,S,M4,L8,ZPC(BLK)

② Remove the 2 Hex nuts for the PC input.

: M3,L6,NI PLT,SUM24L,#4-40

③ Remove the cover rear.

12-1-4 Separation of ASSY POWER & IR Board

Part Name Description Description Photo

Power & IR Board

① Remove 2 screws on the POWER IR Assy

: BH,+,B,M4,L12,ZPC(BLK)

② Remove the ASSY POWER IR Board.

12-1-5 Separation of ASSY COVER SPEAKER

Part Name Description Description Photo

Cover

Speaker

① Remove the 14 screws on the speaker cover.

: BH,+,B,M4,L12,ZPC(BLK)

② Remove the SPEAKER-COVER.

Disassembly & Reassembly

Samsung Electronics 12-3

12-1-6 Separation of ASSY COVER P-REAR

Part Name Description Description Photo

Rear

① Remove 23 screws.

: BH,+,-,S,M4,L8,ZPC(BLK)

② Remove 4 screws.

: M8,L16,ZPC(BLK)

③ Remove the Back Cover.

12-1-7 Separation of ASSY PCB MISC-MAIN

Part Name Description Description Photo

Main

Board

① Remove 4 screws

: PH,+,WWP,M3,L8,NI PLT

② Remove all connectors from the board.

③ Remove the Main Board.

12-1-8 Separation of ASSY COVER P-REAR SUB

Part Name Description Description Photo

Cover P-

Rear Sub

① Remove 4 screws.

: BH,+,-,S,M4,L8,ZPC(BLK)

② Remove 2 screws.

: BH,+,B,M4,L8,ZPC(BLK)

③ Remove the sub cover.

Disassembly & Reassembly

12-4 Samsung Electronics

12-1-10 Separation of ASSY LOGIC BOARD

Part Name Description Description Photo

Flat Cable

① Take care when separating the Logic Board not to damage

the Flat-Cable Connector Cover.

Logic Board

① Remove 4 screws.

: PH,+,WWP,M3,L8,NI PLT

② Remove the Logic Board.

Part Name Description Description Photo

SMPS

SMPS DC-

① Remove 8 screws.

: PH,+,WWP,M3,L8,NI PLT

② Detach all connectors from the ASSY SMPS then remove the

boards.

③ Remove 4 screws.

: PH,+,WWP,M3,L8,NI PLT

④ Detach all connectors from the ASSY SMPS DC DC then

remove the board.

: Wear gloves when handling the power board as there may be some remaining electrical charge in the capacitor. Specifically, avoid touching any part of the capacitor.

12-1-9 Separation of ASSY SMPS and ASSY SMPS DC-DC

Disassembly & Reassembly

Samsung Electronics 12-5

12-1-11 Separation of ASSY X DRIVE BOARD

Part Name Description Description Photo

X-Drive

Board

① To separate the Flat Cable of the X-Board, press the upper

and the lower sides of the connector.

① While pressing the connector, apply slight force toward the

direction of the cable to release the connector.

① Remove the Flat cable.

① Remove 6 screws.

: PH,+,WWP,M3,L8,NI PLT

② Detach all reamining connectors from the X-Drive Board.

③ Remove the X-Drive Board.

Disassembly & Reassembly

12-6 Samsung Electronics

12-1-12 Separation of ASSY Y DRIVE BOARD

Part Name Description Description Photo

Flat Cable

① Detech the 6 Scan Board connectors from the Panel Assy by

pulling the holder from both the top and bottom ends.

Y-Scan

① Remove 5 screws.

: PH,+,WWP,M3,L8,NI PLT

Connectors

① Separate the Scan Boards from the Y-Main Board by

detaching the 2 connectors and remove the Scan Boards.

Y Drive

① Remove 8 screws.

: PH,+,WWP,M3,L8,NI PLT

② Detach all connectors from the Y-Main Board and remove the

Y-Main Board.

Disassembly & Reassembly

Samsung Electronics 12-7

12-1-13 Separation of ASSY BUFFER BOARD

Part Name Description Description Photo

Wall

Bracket

① Remove 8 screws.

: BH,+,-,S,M4,L8,ZPC(BLK)

② Separate PDPmodule from Front cover.

: Please lay the PDP panel face down on a soft surface when

separating front cover.

③ Remove 16 screws.

: BH,+,S,M4,L10,ZPC(BLK)

TCP Cover

① Remove 8 screws.

: PH,+,WWP,M3,L8,NI PLT

② Remove TCPcovers.

Buffer (TOP)

① Remove 12 screws.

: PH,+,WWP,M3,L8,NI PLT

② Remove the E-Board, F-Board and G-Board.

Buffer (BOT)

① Remove 12 screws.

: PH,+,WWP,M3,L8,NI PLT

② Remove the E-Board, F-Board and G-Board.

12-8 Samsung Electronics

MEMO

Circuit Description

Samsung Electronics 13-1

13. Circuit Description

13-1 Power ON/OFF Signal Timing Sequence

1. When connecting the AC power cord, Stand-By 5V from the Main SMPS is supplied to the Main Board (Pin 3 of CN1002 of Main Board).

2. When pressing the Power button on the remote control or on the main body, PS_ON (Pin 5 of CN1002 of Main Board) changes from High to Low.

3. If the PS_ON signal changes to Low, the Main SMPS supplies power to the Main Board and Logic Board, and Va and Vg power is supplied to the DC-DC SMPS.

4. If the VS_ON signal from the Logic Board changes from Low to High, the Main SMPS supplies VS power to the X and Y Drive

Board through the DC-DC SMPS, and the screen displays a picture on it.

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Circuit Description

13-2 Samsung Electronics

13-2 Partial Block Description

13-2-1 Main Board

No Name Function Description

①

SVP-EX62 Main Video Decorder+Deinterlacer+Scaler

AScaler IC that generates the output resolution appropriate to the PDP panel and generates the PIP screen.

②

DNIe-L Image Enhancer The DNIe IC for visual quality improvement.

③

M30620SPGP Main Micom Generates various control signals required for operating the circuit.

④

SAA7119 Sub Video Decorder

The Video Decoder IC that converts the Y/C and Scart RGB signals for the main screen into 10 bit digita R, G, B signals.

⑤

SIL9993 HDMI Decorder Converts the TMDS signal on the HDMI input into 8 bit digital R, G, B signals

⑥

S3F8668 Sub Micom

Detects the Power on/off signal from the remote control and the Power button and turns SMPS on or off, handles the Caption signal, and controls the signal for the LEDs on the front panel.

⑦

MSP4410G Sound processor Sound Processing IC

⑧

NSP6241 Sound Effect chip Sound PWM IC

⑨

TMQZ6-405A Tuner Tuner CH Tuning and CVBS, SIF

Circuit Description

Samsung Electronics 13-3

13-2-2 Power Button Board

13-2-3 Function Key Board

Function Key. Located on the side of the unit.

No Loc. No. Description (1) RM01 Remote Control Sensor (2) SW001 Power Button

(3) OP001

The Illumination sensor that senses the quantity of light. It senses the illumination and automatically adjusts the screen brightness according to the surrounding brightness when the Power Saving Mode of the User menu is set to Auto.

Circuit Description

13-4 Samsung Electronics

(1) CN800: AC IN (90 ~ 264V)

※ CN811, CN806, CN807 and CN808 are not used.

13-2-4 Main SMPS

(2)

CN804-2

(MAIN SMPS)

↔

CN109(READY B'D) Pin No Signal

1 ■

FAN-D 2 FAN-ON 3 STB5V 4 RTN 5 PS-ON 6 12V 7 RTN 8 RTN 9 VCA

10 VCS 11 RTN 12 5.3V 13 RTN 14 5.3V

(3)

CN803(MAIN SMPS)

↔

CN108(READY B'D) Pin No Signal

1 ■

RTN 2 VT(33V) 3 RTN_AMP 4 RTN_AMP 5 18V_AMP 6 18V_AMP 7 RTN 8 12V 9 RTN

10 6V

(4)

CN810(Main SMPS)

↔

CN2013(Logic B'D)

Pin No Signal

1 ■

5.3V 2 5.3V 3 RTN 4 RTN 5 5.3V 6 RTN 7 PS-ON 8 N.C 9 VS-ON

10 STB 5V

(5)

CN809(Main SMPS)

↔

CN3(DC-DC SMPS) Pin No Signal

1 ■

5.3V 2 Vg 3 RTN 4 RTN 5 RTN 6 RTN 7 RTN 8 Va 9 Va

10 N.C 11 Vs 12 Vs

Circuit Description

Samsung Electronics 13-5

1. Outline (PDP 42inch/50inch SMPS) Considering various related conditions, the switching regulator with good efficiency and allowing for its small size and light weight was used as the power supply for PDP 42inch(Schubert)/50inch(Strauss), VS requiring high power consumption Asymmetrical Half Bridge converter and flyback converter. To comply with the international harmonics standards and improve the power factor, active PFC(Power Factor Correction) was used to rectify AC input into +400V DC output, which in turns used as input to the switching regulator.

2. Input The power supply shall be capable of supplying full rated output power over free voltage ranges that are rated 100 VAC - 240 VAC RMS nominal. Operating voltage : 90 VAC - 264 VAC The power supply must be able to start up under peak loading at 90V AC. The power supply shall automatically recover from AC power loss. (Note that nominal voltages for test purposes are considered to be within +/- 1.0V of nominal). STD_5V & Vpr2(3.3V) is a SELV standby voltage that is always present when AC mains voltage present.

3. Output

4. Over Voltage Protection The over voltage sense circuitry and reference shall reside in package that are separate and distinct from the regulator control circuitry and reference. No single point fault shall be able to cause a sustained over voltage condition on any or all outputs. The supply shall provide latch-mode Over Voltage Protection as defined below.

5. Short Circuit and Over current Protection An output short circuit is defined as output impedance of less than 300mohms. The power supply shall shutdown and latch off for shorting VS DC rails to return. Shorts between main output rails and STD_5V shall not cause any damages to the power supply. The power supply shall either shutdown and latch off until the short condition is removed, at which point the P/S shall recover. The power supply shall be capable of withstanding a continuous short-circuit to the output without damage or over stress to the unit (components, PCB traces,connectors,etc.) under the input conditions specified in Section 3 above. Current Protection as defined below.

Output Name Output Voltage Output Current(Max.) Using in PDPDriving

VS +190V ~ 220V (210V) 2.0A Sustain Voltage of Drive Board

VA +60V ~ 80V (70V) 3.0A Address Voltage of Drive Board D5.3V +5.3V 5.0A A6.5V +6.5V 3.0A

FAN_9V +9V 0.2A

VG +15V 1.0A

D12V +12V 1.5A A12V +5.3V 0.5A

18VAMP +18V 2.5A Amp Voltage of Audio Board

VT +33V 0.006A

STD_5V +5V 1.0A Standby for Remote Control

Parameter Min Unit

VS(210V) 250 ~ V

VA(70V) 100 ~ V

VCC(+5.3V) 6.8 ~ V

Output Over Current Limit Unit

VS(210V) 20A, Constant Current.(TBD) A

VA(70V) 10A, Constant Current.(TBD) A

Output except Vs,Va No damage (Auto Recovery or Shut down.) A

Circuit Description

13-6 Samsung Electronics

(6) D5.3V, Vg, Ve Test Point (7) Va, Vset, Vscan Test Point

13-2-5 DC-DC SMPS

(1)

CN809(Main SMPS)

↔

CN3(DC-DC SMPS) Pin No Signal

1 ■

5.3V 2 Vg 3 RTN 4 RTN 5 RTN 6 RTN 7 RTN 8 Va 9 Va

10 N.C

11 Vs

12 Vs

(4), (5)

CN1, CN6

(DC-DC SMPS)

↔

CN2501(E-Buffer),

CN2701(G-Buffer)

Pin No Signal

1 ■

RTN 2 N.C 3 5.3V 4 N.C 5 Va

(2)

CN2(DC-DC SMPS)

↔ CN5007(YB'D)

Pin No Signal

1 ■

Vs 2 Vs 3 RTN 4 RTN 5 Vset 6 RTN 7 Vscan 8 RTN 9 Vg

10 5.3V

(3)

CN4(DC-DC SMPS)

↔ CN4000(X B'D)

Pin No Signal

1 ■

Vs 2 Vs 3 RTN 4 RTN 5 Ve 6 RTN 7 RTN 8 Vg 9 5.3V

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