Samsung PS42A426C1MXZF Schematic

PDP-TELEVISION

Chassis: F59A(P_Euro)_Carnelian

Model : PS42A426C1MXZF

SERVICE Manual

PDP-TELEVISION			CONTENTS
1.			Precaution
2.			Product Specification
3.			Disassembly & Reassembly
4.			Troubleshooting
5.			Exploded View & Part List
6.			Wiring Diagram

PS42A426C1M

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

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

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. Sep. 2008 Printed in Korea

AA82-05491A

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Chapter 3 Disassembly & Reassembly

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

3-1

Chapter 4 Troubleshooting

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

■ 4-2 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

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

Chapter 5 Exploded View & Part List

■ 5-1 PS42A426C1MXZF Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 ■ 5-2 PS42A426C1MXZF Service Item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Chapter 6 Wiring Diagram

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

Precaution

1. 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

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.

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1-1

Precaution

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

Precaution

1-2 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 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

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1-3

Precaution

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

Precaution

1-4 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.

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

1-6	Samsung Electronics

Product Specification

2. Product Specification

2-1 Product Specification

Features

Block	Specification			Major IC		Remark
RF	Tuner			DNOS403SH071A(S)		SEMCO
PDP Module	Samsung SDI W3			42"HD/50"HD		SAMSUNG SDI
Power	Input Voltage: AC 100~240V, 50/60Hz
Video	Scaler			MT8226		Media Tech
	Video Decoder			STi7103		STM
Sound	Sound AMP			NTP3100		Neo Fidelity
	Audio CODEC			MT8291		Media Tech
Cabinet		C9 Design
	Specification
Model	PS42A426C1M			PS50A426C1M
Screen Size	42 Inches (16:9)			50 Inches (16:9)
Dimensions (WxHxD)	41.5 x 28.5 x 12.4 inches (with stand)			48.4 x 31.9 x 12.4 inches (with stand)
Weight	30.5 kg (With Stand)			37 kg (With Stand)
Voltage		AC 100~240V, 50/60Hz
Colour System	PAL, SECAM, NTSC4.43, NTSC 3.58
Sound System		BG, DK, I, M, L, L',MPEG1
PC Resolution		1024 x 768 @ 85Hz
ANTENNA input		AIR IN (75Ω unbalanced)
		RF, AV, S-VIDEO, Scart1, 2,
VIDEO input	Component - 480i/p, 576i/p, 720p, 1080i
		PC IN (D-SUB 15p)
	HDMI1, 2 -480i/p, 576i/p, 720p, 1080i
		RF, AV, S-VIDEO,
AUDIO input			Component,
			PC,
			DVI,
			HDMI
Audio Output		AUDIO (L/R), Headphone
Speaker Output			10W + 10W

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2-1

Product Specification

2-2 Specifications Analysis

○: application, X: non-application

Items	SubItems			450P				410C
			PS42A426C1M			PS50A426C1M		PS-50C67HD (Lily2-50HD)	PS-42C67HD (Lily2-42HD)
	Design
	Inch	42"				50"		50"	42"
Basic Info	Chassis Name		F59A			F59A		F33B	F33B
	Cabinet Name		C9			C9		C9	C9
	IDTV / Ready		IDTV(MPEG4)			IDTV(MPEG4)		IDTV	IDTV
	Motion Judder Canceller		No			No		No	No
	Speaker Type (Hidden/Side/Array)		Down Firing			Down Firing		1/0	1/0
	USB spec (Side)		Service only			Service only		No	No
	F. Memory		No			No		No	No
	UI		Single UI			Single UI		Smart	Smart
	DCM		No			No		No	No
	DLNA		No			No		No	No
	RSS		No			No		No	No
	Woofer		No			No		No	No
	Wi-Fi		No			No		No	No
	Optical Link		No			No		No	No
	Wheel Key		No			No		No	No
Additional	3D		No			No		No	No
Feature	ACE2		Yes			Yes		No	No
	100Hz		Yes			Yes		No	No
	1080p (24Hz) Input		Yes			Yes		No	No
	H.264		Yes			Yes		No	No
	Finland Cable DTV		No			No		No	No
	HDMI-CEC		Yes			Yes		No	No
	HDMI Version (1,2/1.3)	1.2				1.2		1.2	1.2
	HDMI Rear / Side	2/0				2/0		2/0	2/0
	SORT		Yes			Yes		TBD	TBD
	Picture Size(WSS)		TBD			TBD		TBD	TBD
	Clone Remote Controller		TBD			TBD		Yes	Yes
	Auto-Wallmount Support		Yes			Yes		Yes	Yes
	Analog audio Out (L/R)	1				1		1	1
	Remote Controller (Model Code)		TM95			TM95		TM95	TM95
	Screen Size(inches)	42"				50"		50"	42"
	Resolution(Number of Pixels)		1024 x 768			1365 x 768		1365 x 768	1024 x 768
	Brightness		1500cd/m2			1500cd/m2		1500cd/m2	1500cd/m2
	Ultra FilterBright		No			No		No	No
	Anti Reflection		Yes			Yes		No	No
	Contrast Ratio	20000:1				20000:1		15000:1	15000:1
	Screen Aspect Ratio(16:9/4:3)	16:9				16:9		16:9	16:9
Video	Viewing Angle		over 175o (H/V)			over 175o (H/V)		over 175o (H/V)	over 175o (H/V)
	DNIe		Yes			Yes		Yes	Yes
	Number of colors(expressed)		281T			281T		281T	281T
	Grey Level(Gradation)	65536				65536		65536	65536
	Cinema Progressive (Film mode)		Yes			Yes		Yes	Yes
	Digital Comb Filter		3D			3D		3D	3D
	Digital Noise Reduction		Yes			Yes		Yes	Yes
	Low Noise Amplifier		No			No		No	No
	Sound Effect System		SRS TruSurround XT			SRS TruSurround XT		SRS TruSurround XT	SRS TruSurround XT
Audio	Speaker		Down Firing			Down Firing		TBD	TBD
	Sound output (RMS)		10W x 2			10W x 2		10W x 2	10W x 2

2-2	Samsung Electronics

Product Specification

		Anti Burn-in Technology	Yes (APS, All white,	Yes (APS, All white,	Yes (APS, All white,	Yes (APS, All white,
			Signal pattern)	Signal pattern)	Signal pattern)	Signal pattern)
		Power Saving	Yes (Off / High / Middle / Low)	Yes (Off / High / Middle / Low)	"Yes (Off / High / Middle /	"Yes (Off / High / Middle /
					Low)Multi Brightness Mode	Low)Multi Brightness Mode
		Picture-In-Picture	No	No	Yes	Yes
		Clock & On/Off Timer	Yes	Yes	Yes	Yes
		Sleep Timer	Yes (Max 180Min)	Yes (Max 180Min)	Yes (Max 180Min)	Yes (Max 180Min)
		Teletext(TTX)	MEGA TTX Ver 2.5 (1000P)	MEGA TTX Ver 2.5 (1000P)	1.5(1000P)	1.5(1000P)
	Feature	V-Chip	No	No	No	No
		Blue Screen On/Off	No	No	No	No
		Melody On-Off	Yes	Yes	Yes	Yes
		Plug & Play	Yes	Yes	Yes	Yes
		Absent Power Off	Yes	Yes	Yes	Yes
		Auto Power Off	Yes (15Min after No Signal)	Yes (15Min after No Signal)	Yes (15Min after No Signal)	Yes (15Min after No Signal)
		OSD Language	22-Language	22-Language	21-Language	21-Language
		Favorite Channel List	Yes	Yes	No	No
		Still Picture	No	No	No	No
		Sports Mode / Game mode	Sports/Cinema/Game Mode	Sports/Cinema/Game Mode	Yes	Yes
		Tuners	Europe Multi	Europe Multi	NTSC 4.43, PAL-B/G, D/K, I, I/I',	NTSC 4.43, PAL-B/G, D/K, I, I/I',
	System				SECAM-B/G, D/K, L/L`, AV Multi	SECAM-B/G, D/K, L/L`,AV Multi
		POD (Digital Cable Ready)	No	No	No	No
		Composite (AV)	1	1	0	0
		Y/C (S-Video)	1	1	0	0
	Input & Output	Headphone(Earphone)	1	1	0	0
		WISELINK (Multi Memory Slot)	No	No	No	No
	(sid0e)
		WISELINK (USB)	No	No	No	No
		(HDMI)	1	1	0	0
		PictBridge	No	No	No	No
		RF input	1	1	1	1
		RF output	No	No	No	No
		Composite (AV)	No	No	No	No
		S-Video	No	No	No	No
		Component (Y/Pb/Pr)	1	1	1	1
	Input & Output	Euro Scart	2	2	2	2
		PC input (D-sub)	1	1	1	1
	(back)
		HDMI	2	2	1	1
		Motorized Mount Control	Yes	Yes	Yes	Yes
		Video Monitor Out	No	No	No	No
		Audio Monitor Out	1	1	1	1
		Digital Audio (Coaxial)	No	No	No	No
		Digital Audio (Optical)	1	1	Yes	Yes
		Power Supply	220~240V (50/60Hz)	220~240V (50/60Hz)	220~240V (50/60Hz)	220~240V (50/60Hz)
		Operation Power Consumption	TBD	TBD	TBD	TBD
	Power	Stand-By Power Consumption	Under 1W	Under 1W	UNDER 3W	UNDER 3W
		Master S/W	No	No	TBD	TBD
		Energy Star	No	No	Yes	Yes
		Panel Life Time	60,000 hrs	60,000 hrs	60,000 hrs	60,000 hrs
		Remote Control	TM96B	TM96B	TM96	TM96
		RF Cable	No	No	No	No
		User Manual	Yes	Yes	Yes	Yes
	Accessory	Battery	2EA(AAA)	2EA(AAA)	2EA(AAA)	2EA(AAA)
		Power Cable	Yes	Yes	Yes	Yes
		Stand	Yes	Yes	Yes	Yes
		Speaker	Integraded	Integraded	Integraded	Integraded

For the power supply and power consumption, refer to the label attached to the product.

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2-3

Product Specification

2-3 Accessories

Supplied Accessories

Accessories that can be purchased additionally

Accessories	Item	Item code	Remark
	Remote Control	BN59-00705A
	Batteries	4301-000103
	Power Cord	3903-000145
	Owner's Instructions	BN68-01547A
	Warranty Card	BN68-00514E	Samsung Service center
	Registration Card	AA68-03575C
	Safety Guide Manual	AA68-03242K
	Ferrite Core for	3301-001110
	Earphone/Power Cord
	Ferrite Core for	3301-001305
	S-VIDEO/Power Cord
	HDMI Cable	BN39-00641A
	3000mm
	HDMI/DVI cable	BN39-00643A
	3000mm
	Component Cables	BN39-00279A
	Scart Cable	None	Electronics Store/
			Internal shopping mall
	PC Cable	1830mm

PC Audio Cable	BN39-00115A
Antenna Cable	2000mm

2-4	Samsung Electronics

Disassembly & Reassembly

3. Disassembly & Reassembly

3-1 Overall Disassembly & Reassembly

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.

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

Part Name	Description		Description Photo
Cover	Remove 4 screws. (	)
Rear	: M8,L16,ZPC(BLK),SWRCH18A,WP
	Remove 11 screws. (	)
	: BH,+,B,M4,L3,ZPC(BLK)
	Remove 6 screws. (	)
	: PH,+,WSP,S,M4,L35,ZPC(BLK)
	Remove 3 screws. (	)

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

Remove the Cover Rear.

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

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

Part Name	Description	Description Photo
Main	Detach all connectors from the Main
Board	Board.
	Remove 6 screws.
	: PH,+,WWP,M3,L8,NI PLT
	Remove the Main Board.

Samsung Electronics

3-1

Disassembly & Reassembly

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

Part Name	Description			Description Photo
FILTER-	Detach connector from Main SMPS.
EMI
AC LINE	Remove 1 screws. (		)
	: BH,+,S,M4,L10,ZPC(BLK)
	Remove FILTER-EMI AC LINE.

3-1-4 Separation of BRACKET-PCB

Part Name	Description		Description Photo
Bracket	Remove 2 screw. (	)
PCB	: BH,+,B,M4,L3,ZPC(BLK)
	Remove 1 screws. (	)

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

Remove 1 screws. ()

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

Remove the BRACKET-PCB.

3-2	Samsung Electronics

Disassembly & Reassembly

3-1-5 Separation of BRACKET-PCB

Part Name	Description			Description Photo
Bracket	Remove 2 screw. (	)
PCB	: BH,+,B,M4,L3,ZPC(BLK)
	Remove 2 screws. (		)
	: BH,+,S,M4,L10,ZPC(BLK)

Remove 2 screws. (			)
: BH,+,S,M4,L10,ZPC(BLK)
Remove 2 screws. (		)

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

Samsung Electronics

3-3

Disassembly & Reassembly

3-1-6 Separation of ASSY BRACKET P-WALL

Part Name	Description		Description Photo
42"	Remove 2 screws. (	)
Wall	: BH,+,B,M4,L3,ZPC(BLK)
Bracket
	Remove 2 screws. (	)
	: BH,+,S,M4,L10,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"	Remove 2 screws. (		)
Wall	: BH,+,B,M4,L3,ZPC(BLK)
Bracket	Remove 2 screws. (		)
	: BH,+,S,M4,L10,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.

3-4	Samsung Electronics

Disassembly & Reassembly

3-1-7 Separation of ASSY SPEAKER P

Part Name	Description	Description Photo
42"	Remove 4 screws.
Speaker	: BH,+,WP,B,M4.0,L3,ZPC(BLK),
	SWRCH18A
	Remove the Speaker.

50"	Remove 4 screws.
Speaker	: BH,+,WP,B,M4.0,L3,ZPC(BLK),
	SWRCH18A
	Remove the Speaker.

3-1-8 Separation of ASSY BLUE P

Part Name	Description	Description Photo
42"	Detach all connectors from the
	Assy Blue p.

Disconnect

50"	Detach all connectors from the
	Assy Blue p.

Samsung Electronics

3-5

Disassembly & Reassembly

3-1-9 Separation of SMPS-PDP TV

Part Name

Description

Description Photo

42"/50" Detach all connectors from the SMPS. SMPS

Remove 8 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.

3-1-10 Separation of ASSY PDP MODULE P-LOGIC MAIN BOARD

Part Name	Description	Description Photo
42"	Detach all connectors from the Logic
Logic	Main Board.
Board

Remove 4 screws.

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

Remove the Logic Main Board.

50"	Detach all connectors from the Logic
Logic	Main Board.
Board	Remove 4 screws.
	: WSP,PH,+,M3,L8,NI PLT
	Remove the Logic Main Board.

3-6	Samsung Electronics

Disassembly & Reassembly

3-1-11 Separation of ASSY PDP MODULE P-X MAIN BOARD

Part Name	Description	Description Photo
Flat Cable	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.

42"	Remove 6 screws.
X-Main	: PH,+,WWP,M3,L8,NI PLT
Board	Remove the X-Main Board.

50"	Remove 7 screws.
X-Main	: PH,+,WWP,M3,L8,NI PLT
Board	Remove the X-Main Board.

Samsung Electronics

3-7

Disassembly & Reassembly

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

Part Name	Description	Description Photo
Flat Cable	Detach the 6 scan board connectors
	from the panel by pulling the holder from
	both the top and bottom ends.

42"	Remove 3 screws.
Y-Scan	: PH,+,WWP,M3,L8,NI PLT
Board

50"	Remove 5 screws.
Y-Scan	: PH,+,WWP,M3,L8,NI PLT
Board

3-8	Samsung Electronics

Disassembly & Reassembly

Part Name	Description	Description Photo
50"	Remove 9 screws.
Y-Main	: PH,+,WWP,M3,L8,NI PLT
Board

Detach all connectors from the Y-Main Board.

42"	Remove 4 screws.
Y-Main	: PH,+,WWP,M3,L8,NI PLT
Board	Detach all connectors from the Y-Main Board.

Samsung Electronics

3-9

Disassembly & Reassembly

3-1-13 Separation of ASSY PDP MODULE P-ADDRESS BUFFER BOARD

Part Name	Description	Description Photo
42"	Remove 4 screws.
Still Bar	: PH,+,WWP,M3,L8,NI PLT
	Remove the Still Bar.

50"	Remove 3 screws.
Still Bar	: PH,+,WWP,M3,L8,NI PLT
	Remove the Still Bar.

42"	Detach the all connectors from the
Buffer	buffer board.
Board	Remove 7 screws.
	: PH,+,WWP,M3,L8,NI PLT
	Remove the E-Board and F-Board.

50"	Detach the all connectors from the
Buffer	buffer board.
Board	Remove 7 screws.
	: PH,+,WWP,M3,L8,NI PLT
	Remove the E-Board and F-Board.

3-10	Samsung Electronics

Disassembly & Reassembly

3-1-14 Separation of ASSY PANEL BRACKETS

Part Name	Description				Description Photo
Panel	Remove 4 screws. (		)
Brackets	: BH,+,B,M4,L3,ZPC(BLK)
	Remove 3 screws. (			)
	: BH,+,S,M4,L10,ZPC(BLK)
	Remove the Side Panel Brackets.

3-1-15 Separation of ASSY PCB FUNCTION

Part Name	Description	Description Photo
Function	Remove 2 screws.
Board	: BH,+,B,M4,L3,ZPC(BLK)
	Remove the Function Board.

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3-11

MEMO

3-12	Samsung Electronics

Troubleshooting

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, Y Main Board, and between the Logic Boards.

Samsung Electronics

4-1

Troubleshooting

4-1-2 Checkpoints by Error Mode

■ No Power

		- 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 unit 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.
		- Check the fuses.
		- Check the output voltage of the SMPS.
		- Replace the Main Board.

Troubleshooting

Procedures

		Is the AC IN socket connector and					No			The AC IN socket connector and
		the Main SMPS CN800 connected?								the Main SMPS CN800 connected
				Yes
		Is the Fuse (F801S) of the Main					Yes
										Replace Fuse (F801S)
		SMPS Power Input Part blown?
				Yes
		CN801
							No
		Check the STD5V vOLTAGE								Replace the Main SMPS
		Check PS_ON voltage if it is 0V
				Yes
		Replace the Main Board

4-2	Samsung Electronics

Troubleshooting

■ When the unit is repeatedly turning on and off

Symptom	- The SMPS relay is repeatedly turning 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

Procedures

	Does the symptom continue when
						No			Replace the Y Main Board
	connecting the power after removing
	CN810 from the SMPS?
			Yes
	Does the symptom continue when
						No
	connecting 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
	Replace the SMPS

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

4-3

Troubleshooting

■ No Picture (When audio is normal)

	Symptom	- Audio is normal but no picture is displayed on the screen.
		- This may happen when the Main Board is functioning but the X, Y Main Board, Logic Board, or Y Buffer
	Major Checklist	Boards are not.
		- The output voltage of the Main SMPS.
		- This may happen when the LVDS cable connecting the Main Board and the Logic Board is disconnected.

Troubleshooting

Procedures

Are the Vs and Va voltages normal after

No

Replace the SMPS

removing all cables from the SMPS?

(CN810, CN809, CN808, CN807)

Yes

No

Did problem improve?

Replace the Y Main Board

Yes

No

Did problem improve?

Replace the X Main Board

Yes

No

Did problem improve?

Replace the Logic Board

Yes

No

Did problem improve?

Replace the Y Scan Board

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

■ No Sound

Symptom	- Video is normal but there is no sound.
	- When the speaker connectors are disconnected or damaged.
Major Checklist	- When the sound processing part of the Main Board is not functioning.
	- Speaker defect.

Troubleshooting

Procedures

	Is the cable connection between the
						No			Connect the cable properly or
	Main Board and the speaker
									replace the cable, if necessary.
	properly connected?
			Yes
	Is the output voltage of SMPS normal?
						No
	(CN801 #13)								Replace the SMPS
			Yes
	Is the speaker output terminal
						No
	of the Main Board normal?								Replace the Main Board
			Yes

Replace the Speaker

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4-5