Samsung PS42B451B2WXXU User manual

PLASMA DISPLAY TV CONTENTS
1. Precaution
2. Product Specification
3. Disassembly & Reassembly
4. Troubleshooting
5. Exploded View & Part List
6. Wiring Diagram
SERVICE Manual
PS42B451B2W
PS50B451B2W
PLASMA DISPLAY TV
Chassis : F65A(P_HD)_B450
Model : PS42B451B2WXXU
PS50B451B2WXXU
Refer to the service manual in the GSPN (see the rear cover) for the more information.

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. Mar. 2009
Printed in Korea
AA82-05739A
Area Web Site
North America service.samsungportal.com
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CIS cis.samsungportal.com
Europe europe.samsungportal.com
China china.samsungportal.com
Asia asia.samsungportal.com
Mideast & Africa mea.samsungportal.com
GSPN (Global Service Partner Network)

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
■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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
Chapter 5 Exploded View & Part List
■5-1 PS42B451B2WXXU Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
■5-2 PS50B451B2WXXU Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
■5-3 PS42B451B2WXXU Service Item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
■5-4 PS50B451B2WXXU Service Item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Chapter 6 Wiring Diagram
■6-1 Overall Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Part Name Description Description Photo
Cover
Rear
Remove 17 screws. ( )
: BH,+,B,M4,L3,ZPC(BLK)
Remove 6 screws. ( )
: PH,+,WSP,S,M4,L35,ZPC(BLK)
Remove the rear cover.
: Please lay the PDP unit face down on a
soft surface when removing the stand.
Disassembly & Reassembly
Samsung Electronics 3-1
3. Disassembly & Reassembly
3-1 Overall Disassembly & Reassembly
3-1-1 Separation of ASSY COVER P-REAR
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 Main Board, Y Main
Board, etc. (A spark 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 scratch 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.
!
!
<42"> <50">

Disassembly & Reassembly
3-2 Samsung Electronics
3-1-3 Separation of FILTER-EMI AC LINE
Part Name Description Description Photo
FILTER-
EMI
AC LINE
Detach connector from SMPS.
Remove 2 screw. ( )
: PH,+,WWP,M3,L8,NI PLT
Remove 1 screws.( )
: BH,+,S,M4,L10,ZPC(BLK)
Separate FILTER-EMI AC LINE from
bracket.
3-1-2 Separation of ASSY PCB MISC-MAIN
Part Name Description Description Photo
Main
Board
Detach all connectors from the Main
Board.
Remove 4 screws.
: PH,+,WWP,M3,L8,NI PLT
Remove the Main Board.
The photo is for 42".
50" is very similiar with 42".
<42">
<50">

Disassembly & Reassembly
Samsung Electronics 3-3
3-1-4 Separation of BRACKET-PCB
Part Name Description Description Photo
Bracket
PCB
Remove screw.( )
: BH,+,B,M4,L3,ZPC(BLK)
Remove the BRACKET-PCB.
3-1-5 Separation of ASSY BRACKET 42"/50"
Part Name Description Description Photo
Bracket Remove 2 screws. ( )
: BH,+,PT,S Tite,M4,L10,ZPC(BLK)
Remove 2 screws. ( )
: BH,+,B,M4,L3,ZPC(BLK)
Remove Bracket.

3-1-7 Separation of ASSY SPEAKER P
Part Name Description Description Photo
Speaker Remove 4 screws.( )
: BH,+,WP,B,M4.0,L3,ZPC(BLK),
SWRCH18A
Remove the Speaker.
The photo is for 42".
50" is very similiar with 42".
Disassembly & Reassembly
3-4 Samsung Electronics
3-1-6 Separation of ASSY BRACKET P-WALL
Part Name Description Description Photo
42"
Wall
Bracket
Remove 2 screws. ( )
: BH,+,B,M4,L3,ZPC(BLK)
Remove 4 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
Remove Wall Bracket.
: Please lay the PDP panel face down
on a soft surface when separating front
cover.
50"
Wall
Bracket
Remove 2 screws. ( )
: BH,+,B,M4,L3,ZPC(BLK)
Remove 4 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
Remove Wall Bracket.
!

Disassembly & Reassembly
Samsung Electronics 3-5
3-1-8 Separation of SMPS-PDP TV
Part Name Description Description Photo
42"
SMPS
Detach all connectors from the SMPS.
Remove 6 screws.
: PH,+,WWP,M3,L8,NI PLT
Remove the SMPS.
: 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.
50"
SMPS
Detach all connectors from the SMPS.
Remove 6 screws.
: PH,+,WWP,M3,L8,NI PLT
Remove the SMPS.
!
3-1-9 Separation of ASSY PDP MODULE P-LOGIC MAIN BOARD
Part Name Description Description Photo
Logic
Board
Detach all connectors from the Logic
Main Board.
Remove 2 screws.
: WSP,PH,+,M3,L8,NI PLT
Remove the Logic Main Board.

Disassembly & Reassembly
3-6 Samsung Electronics
3-1-10 Separation of ASSY PDP MODULE P-X MAIN BOARD
Part Name Description Description Photo
42"
Flat able
Detach all Connectors from the X Main Board.
To separate the Flat Cable of the X-Board, press the
upper and the lower sides of the connector.
: Pinch the sides, but then push down in the ribbon, it
should slide out after that.
42"
X-Main
Board
Remove 7 screws.
: PH,+,WWP,M3,L8,NI PLT
Remove the X-Main Board.
50"
X-Main
Board
Remove the X-Main Board.
!

Disassembly & Reassembly
Samsung Electronics 3-7
3-1-11 Separation of ASSY PDP MODULE P-Y MAIN BOARD
Part Name Description Description Photo
42"
Flat Cable
Detach the scan board connectors from the panel .
50"
Flat Cable
Detach the scan board connectors from the panel .
42"
Y-Scan
Board
Remove 2 screws.
: PH,+,WWP,M3,L8,NI PLT