Samsung PS42C96HDX/XEC, PS50C96HDX/XEC Schematic

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1. Precaution

2. Product Specification

3. Disassembly & Reassembly

4. Troubleshooting

5. Exploded View & Part List

6. Wiring Diagram

7. Schematic Diagram

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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. Apr. 2007

Printed in Korea

AA82-04399A

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

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

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

Chapter 3 Disassembly & Reassembly

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

Chapter 4 Troubleshooting

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

■ 4-2 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

■ 4-3 Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32

Chapter 5 Exploded View & Part List

■ 5-1 PS42C96HDX/XEC Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

■ 5-2 PS50C96HDX/XEC Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

■ 5-3 PS42C96HDX/XEC Service Item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

■ 5-4 PS50C96HDX/XEC Service Item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Chapter 6 Wiring Diagram

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

Chapter 7 Schematic Diagram

■ 7-1 Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

■ 7-2 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Part Name Description Description Photo

Cover

Rear

Disassembly & Reassembly

Samsung Electronics 3-1

3. Disassembly & Reassembly

3-1 Overall Disassembly & Reassembly

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

3-1-2 Separation of ASSY PCB MISC-MAIN

Part Name Description Description Photo

Main

Board

① Detach all connectors from the Main

Board.

② Remove 4 screws.

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

③ Remove the Main Board.

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, YMain
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 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.

① Remove 4 screws. ( )

: M8,L16,ZPC(BLK),SWRCH18A,WP

② Remove 15 screws. ( )

: BH,+,B,M4,L3,ZPC(BLK)

③ Remove 4 screws. ( )

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

④ Remove the 2 Hex nuts for the PC

input. ( )

: #4-40,L6,NI PLT,C3601,-

⑤ Remove the Cover Rear.

: Please lay the PDP unit face down on a

soft surface when removing the stand.

Disassembly & Reassembly

3-2 Samsung Electronics

3-1-3 Separation of FILTER-EMI AC LINE

Part Name Description Description Photo

FILTER-

EMI

AC LINE

① Detach connector from Main SMPS.

② Remove 2 screws. ( )

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

③ Remove a screw. ( )

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

④ Remove FILTER-EMI AC LINE.

3-1-4 Separation of BRACKET-PCB

Part Name Description Description Photo

Bracket

PCB

① Remove a screw.

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

② Remove the BRACKET-PCB.

Disassembly & Reassembly

Samsung Electronics 3-3

3-1-5 Separation of ASSY BRACKET

Part Name Description Description Photo

42"

Bracket

① Remove 4 screws. ( )

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

② Remove 2 screws. ( )

: BH,+,B,M4,L3,ZPC(BLK)

③ Remove Bracket.

50"

Bracket

① Remove 4 screws. ( )

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

② Remove 2 screws. ( )

: BH,+,B,M4,L3,ZPC(BLK)

③ Remove Bracket.

3-1-6 Separation of ASSY BOARD P-SIDE AV

Part Name Description Description Photo

Side AV

① Remove a screw. ( )

: BH,+,B,M4,L3,ZPC(BLK)

② Remove a screw. ( )

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

③ Remove the Side AV.

Disassembly & Reassembly

3-4 Samsung Electronics

3-1-7 Separation of ASSY BRACKET P-WALL

Part Name Description Description Photo

42"

Wall

Bracket

① Remove 2 screws. ( )

: BH,+,B,M4,L3,ZPC(BLK)

② Remove 6 screws. ( )

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

③ Remove Wall Bracket.

: Please lay the PDP panel face down

on a soft surface when separating front
cover.

50"

Wall

Bracket

① Remove 2 screws. ( )

: BH,+,B,M4,L3,ZPC(BLK)

② Remove 6 screws. ( )

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

③ Remove Wall Bracket.

: Please lay the PDP panel face down on

a soft surface when separating front
cover.

Disassembly & Reassembly

Samsung Electronics 3-5

3-1-8 Separation of ASSY SPEAKER P

Part Name Description Description Photo

42"

Speaker

① Remove 4 screws.

: BH,+,WP,B,M4.0,L3,ZPC(BLK),

SWRCH18A

② Remove the Speaker.

50"

Speaker

① Remove 4 screws.

: BH,+,WP,B,M4.0,L3,ZPC(BLK),

SWRCH18A

② Remove the Speaker.

3-1-9 Separation of ASSY BOARD P-POWER&IR

Part Name Description Description Photo

Power

&

IR Board

① Detach all connectors from the

Power&IR Board.

② Remove the Power&IR PCB unlocking

the 2 holders.

Disassembly & Reassembly

3-6 Samsung Electronics

3-1-10 Separation of SMPS-PDP TV

Part Name Description Description Photo

42"

SMPS

① Detach all connectors from the SMPS.

② Remove 8 screws.

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

③ 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

① Detach all connectors from the SMPS.

② Remove 8 screws.

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

③ 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.

Disassembly & Reassembly

Samsung Electronics 3-7

3-1-11 Separation of ASSY PDPMODULE P-LOGIC MAIN BOARD

Part Name Description Description Photo

42"

Logic

Board

① Detach all connectors from the Logic

Main Board.

② Remove 4 screws.

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

③ Remove the Logic Main Board.

50"

Logic

Board

① Detach all connectors from the Logic

Main Board.

② Remove 4 screws.

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

③ Remove the Logic Main Board.

Disassembly & Reassembly

3-8 Samsung Electronics

3-1-12 Separation of ASSY PDP MODULE P-X MAIN BOARD

Part Name Description Description Photo

Flat Cable

42"

X-Main

Board

① Remove 4 screws.

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

② Remove the X-Main Board.

50"

X-Main

Board

① Remove 4 screws.

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

② Remove the X-Main Board.

① 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.

Disassembly & Reassembly

Samsung Electronics 3-9

3-1-13 Separation of ASSY PDP MODULE P-Y MAIN BOARD

Part Name Description Description Photo

Flat Cable

① Detach the 6 scan board connectors

from the panel by pulling the holder from
both the top and bottom ends.

42"

Y-Scan

Board

① Remove 3 screws.

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

50"

Y-Scan

Board

① Remove 5 screws.

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

Disassembly & Reassembly

3-10 Samsung Electronics

Part Name Description Description Photo

42"

Y-Main

Board

① Remove 4 screws.

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

② Detach all connectors from the Y-Main

Board.

50"

Y-Main

Board

① Remove 4 screws.

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

② Detach all connectors from the Y-Main

Board.

Disassembly & Reassembly

Samsung Electronics 3-11

3-1-14 Separation of ASSY PDP MODULE P-ADDRESS BUFFER BOARD

Part Name Description Description Photo

42"

Still Bar

50"

Still Bar

42"
Buffer
Board

① Detach the all connectors from the

buffer board.

② Remove 3 screws.

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

③ Remove the E-Board and F-Board.

50"
Buffer
Board

① Detach the all connectors from the

buffer board.

② Remove 14 screws.

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

③ Remove the E-Board and F-Board.

① Remove 4 screws.

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

② Remove the Still Bar.

① Remove 4 screws.

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

② Remove the Still Bar.

3-1-16 Separation of ASSY PCB FUNCTION

Part Name Description Description Photo

Function

Board

Disassembly & Reassembly

3-12 Samsung Electronics

3-1-15 Separation of ASSY PANEL BRACKETS

Part Name Description Description Photo

Panel

Brackets

① Remove 3 screws. ( )

: BH,+,B,M4,L3,ZPC(BLK)

② Remove 4 screws. ( )

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

③ Remove the Side Panel Brackets.

① Remove 2 screws.

: BH,+,B,M4,L3,ZPC(BLK)

② Remove the Function Board.

Samsung Electronics5-1

Exploded View & Part List

5. Exploded View & Part List

5-1 PS42C96HDX/XEC Exploded View

M0013

T0079T0915

M0412

M0020

M0027

T0268

T0044

M0149

T0456

M0146

M0105

T0175

M0145

M0150

M0105

M0112

T0074

T0003

M0146

T0023

T0056

CIS7

T0023

5-2Samsung Electronics

Exploded View & Part List

Loc. No. Code No. Description Specification Q'ty SA/SNA Remark

CIS7 AA61-60003B SPRING ETC-CS -,SUS304,-,-,OD11.2,N7,OD1 1 S.N.A

M0013 BN96-04709B ASSY COVER P-REAR 42Q9/C9,EU(iDTV),PCM T 1 S.A

M0020 BN96-04900D ASSY BOARD P-SIDE A/V LILY 42",SJ06-01-0 1 S.N.A

M0027 BN96-05835A ASSY STAND P-BASE 42Q9/42C9,ABS,SF-0507, 1 S.A

M0105 BN67-00190A LENS-LED 42Q9,PC,light blue,Material of 1 S.N.A

M0112 BN63-03047D COVER-FRONT 42C9,ABS,HB,BK23,STEAM MOLD 1 S.N.A

M0145 BN96-04853B ASSY BOARD P-FUNCTION Lily/Calla,CT5000- 1 S.A

M0146 BN96-04687A ASSY BRACKET P-FILTER SIDE 42Q9,AL6063,T 2 S.N.A

M0146 BN96-04861D ASSY BOARD P-POWER & IR Lily/Calla,CT500 1 S.A

M0149 BN96-04685A ASSY BRACKET P-FILTER TOP 42Q9,AL6063,T1 1 S.N.A

M0150 BN96-04686A ASSY BRACKET P-FILTER BOTTOM 42Q9,AL6063 1 S.N.A

M0150 BN96-04691B ASSY BRACKET P-SUPPORT FILTER 42Q9,Al 60 1 S.N.A

M0412 BN96-04903C ASSY BRACKET P-PCB 42Q9,SECC T0.8 1 S.N.A

T0003 BN96-04712D ASSY COVER P-FRONT 42C9,ABS HB,BK23,STEA 1 S.A

T0023 BN96-04707A ASSY COVER P-KNOB POWER C9/Q9,ABS HB 1 S.A

T0023 BN64-00567A KNOB POWER 42Q9,PC,VIOLET 1 S.N.A

T0044 BN96-04592A ASSY PDP MODULE P-MODULE 42HD W2,PL42AX0 1 S.A

T0056 BN63-03091A COVER-DECORATION 42C9,ABS,HB,BLK 1 S.N.A

T0074 BN59-00611A REMOCON JASMINE , LILY,TM87C,SAMSUNG 28p 1 S.A

T0079 BN94-01221C ASSY PCB MISC-MAIN PS42C96HD,F30A,BN41-0 1 S.N.A

T0175 BN96-04704A ASSY SPEAKER P 8ohm,C9,10W,4P connector, 1 S.A

T0268 3903-000145 CBF-POWER CORD DT,EU,FP3/YES,U(IEC C13-R 1 S.A

T0456 BN67-00188A GLASS-FILTER EMI 42" C7 HD,Sputter,with 1 S.A

T0915 BN61-02894B HOLDER-MODULE 42Q9,PC ABS 2 S.N.A

Samsung Electronics5-3

Exploded View & Part List

5-2 PS50C96HDX/XEC Exploded View

M0013

T0079

M0412

M0020

T0044

T0915

M0149

M0146

T0456

M0027

M0105

T0268

T0074

T0003

M0146

T0023

T0175

M0145

M0150

M0105

M0112

T0056

CIS7

T0023

5-4Samsung Electronics

Exploded View & Part List

Loc. No. Code No. Description Specification Q'ty SA/SNA Remark

CIS7 AA61-60003B SPRING ETC-CS -,SUS304,-,-,OD11.2,N7,OD1 1 S.N.A

M0013 BN96-04711B ASSY COVER P-REAR 50Q9/C9,EU(iDTV),PCM T 1 S.A

M0020 BN96-04900E ASSY BOARD P-SIDE A/V LILY 50",SJ06-01-0 1 S.N.A

M0027 BN96-04714B ASSY STAND P-BASE C9/Q9,ABS HB SF-0507,B 1 S.A

M0105 BN67-00190A LENS-LED 42Q9,PC,light blue,Material of 1 S.N.A

M0112 BN63-03067D COVER-FRONT 50C9,ABS,HB,BK23,STEAM MOLD 1 S.N.A

M0145 BN96-04853B ASSY BOARD P-FUNCTION Lily/Calla,CT5000- 1 S.A

M0146 BN96-04690A ASSY BRACKET P-FILTER SIDE 50Q9,AL6063,T 2 S.N.A

M0146 BN96-04861D ASSY BOARD P-POWER & IR Lily/Calla,CT500 1 S.A

M0149 BN96-04688A ASSY BRACKET P-FILTER TOP 50Q9,AL6063,T1 1 S.N.A

M0150 BN96-04692A ASSY BRACKET P-SUPPORT FILTER 50Q9,AL606 1 S.N.A

M0150 BN96-04689A ASSY BRACKET P-FILTER BOTTOM 50Q9,AL6063 1 S.N.A

M0412 BN96-04903C ASSY BRACKET P-PCB 42Q9,SECC T0.8 1 S.N.A

T0003 BN96-04713D ASSY COVER P-FRONT 50C9,ABS HB,BK23,STEA 1 S.A

T0023 BN96-04707A ASSY COVER P-KNOB POWER C9/Q9,ABS HB 1 S.A

T0023 BN64-00567A KNOB POWER 42Q9,PC,VIOLET 1 S.N.A

T0044 BN96-05772A ASSY PDP MODULE P PL50HW025A,50HD W2A,PL 1 S.A

T0056 BN63-03081A COVER-DECORATION 50C9,ABS,HB BLK 1 S.N.A

T0074 BN59-00611A REMOCON JASMINE , LILY,TM87C,SAMSUNG 28p 1 S.A

T0079 BN94-01223C ASSY PCB MISC-MAIN PS50C96HD,MAIN,F30A,B 1 S.N.A

T0175 BN96-04704A ASSY SPEAKER P 8ohm,C9,10W,4P connector, 1 S.A

T0268 3903-000145 CBF-POWER CORD DT,EU,FP3/YES,U(IEC C13-R 1 S.A

T0456 BN67-00197A GLASS-FILTER EMI 50 W2, C9,Sputter, wit 1 S.A

T0915 BN61-02895B HOLDER-MODULE 50Q9,PCABS 2 S.N.A

Samsung Electronics5-5

Exploded View & Part List

5-3 PS42C96HDX/XEC Service Item

Loc. No. Code No. Description Specification Q'ty Remark

M0013 BN96-04711B ASSY COVER P-REAR 50Q9/C9,EU(iDTV),PCM T 1

M0027 BN96-04714B ASSY STAND P-BASE C9/Q9,ABS HB SF-0507,B 1

M2893 BN39-00859A LEAD CONNECTOR CALLA 50",UL20276#30,UL/C 1

M2893 BN39-00881A LEAD CONNECTOR LILLY 42"/50",UL1007#26,U 1

T0003 BN96-04713D ASSY COVER P-FRONT 50C9,ABS HB,BK23,STEA 1

T0044 BN96-05772A ASSY PDP MODULE P PL50HW025A,50HD W2A,PL 1

T0074 BN59-00611A REMOCON JASMINE , LILY,TM87C,SAMSUNG 28p 1

T0079 BN94-01223C ASSY PCB MISC-MAIN PS50C96HD,MAIN,F30A,B 1

T0175 BN96-04704A ASSY SPEAKER P 8ohm,C9,10W,4P connector, 1

T0764 BN44-00162A SMPS-PDP TV HPS5053,SEM,AC/DC,460W,AC100 1

T1910 BN96-06091A ASSY PDP MODULE P-X-MAIN BOARD PL50HW025 1

T1911 BN96-06092A ASSY PDP MODULE P-Y-MAIN BOARD PL50HW025 1

T1914 BN96-06096A ASSY PDP MODULE P-ADDRESS E BU PL50HW025 1

T1915 BN96-06097A ASSY PDP MODULE P-ADDRESS F BU PL50HW025 1

T1917 BN96-06095A ASSY PDP MODULE P-LOGIC MAIN PL50HW025A, 1

T1960 BN96-06093A ASSY PDP MODULE P-Y-MAIN UPPER PL50HW025 1

T1961 BN96-06094A ASSY PDP MODULE P-Y-MAIN LOWWE PL50HW025 1

※ This is the list which is available to repair the real material at the time of service.

5-6Samsung Electronics

Exploded View & Part List

5-4 PS50C96HDX/XEC Service Item

Loc. No. Code No. Description Specification Q'ty Remark

M0013 BN96-04709B ASSY COVER P-REAR 42Q9/C9,EU(iDTV),PCM T 1

M0027 BN96-05835A ASSY STAND P-BASE 42Q9/42C9,ABS,SF-0507, 1

M2893 BN39-00859A LEAD CONNECTOR CALLA 50",UL20276#30,UL/C 1

M2893 BN39-00881A LEAD CONNECTOR LILLY 42"/50",UL1007#26,U 1

T0003 BN96-04712D ASSY COVER P-FRONT 42C9,ABS HB,BK23,STEA 1

T0044 BN96-04592A ASSY PDP MODULE P-MODULE 42HD W2,PL42AX0 1

T0074 BN59-00611A REMOCON JASMINE , LILY,TM87C,SAMSUNG 28p 1

T0079 BN94-01221C ASSY PCB MISC-MAIN PS42C96HD,F30A,BN41-0 1

T0175 BN96-04704A ASSY SPEAKER P 8ohm,C9,10W,4P connector, 1

T0764 BN44-00161A SMPS-PDP TV HPS4253,SEM,AC/DC,370W,AC100 1

T1910 BN96-04593A ASSY PDP MODULE P-X-MAIN 42HD W2,PL42AX0 1

T1911 BN96-04594A ASSY PDP MODULE P-Y-MAIN 42HD W2,PL42AX0 1

T1914 BN96-04597A ASSY PDP MODULE P-ADDRESS-E BU 42HD W2,P 1

T1915 BN96-04598A ASSY PDP MODULE P-ADDRESS-F BU 42HD W2,P 1

T1917 BN96-04596A ASSY PDP MODULE P-LOGIC MAIN 42HD W2,PL4 1

T9698 BN96-04595A ASSY PDP MODULE P-Y-MAIN SCAN 42HD W2,PL 1

※ This is the list which is available to repair the real material at the time of service.

Samsung Electronics5-7

MEMO

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).

Fig. 1-1 AC Leakage Test

4. Ahigh 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.

Precaution

Samsung Electronics 1-1

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

1. Precaution

1-1 Safety Precautions

(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

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.

Precaution

1-2 Samsung Electronics

!

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.

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

Precaution

Samsung Electronics 1-3

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.

1-2 Servicing Precautions