DAEWOO DPN-4274NHS Service Manual

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S/M NO. : TCP120BEF1

Service Manual

42” PLASMA PDP TV CHASSIS : SP-200N

MODEL : DPN-4274NHS

Caution

:In this Manual, some parts can be changed for improving. their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List)in Service Information Center(http://svc.dwe.co.kr)

DAEWOO ELECTRONICS Corp.

http : //svc.dwe.co.kr

Jun. 2004

Contents

I. Parts with the exception of MODULE

1.Safety Precautions 2

2.Product Specification 3 2-1. SPECIFICATION 3 2-2. Available Input Signal 5 2-3. Remote Control Setup Code 6

3.BLOCK DIAGRAM 14

4.Description Of A/V and power 15 4-1. Block Diagram of main IC and TP 15 4-2. Overview 16 4-3. POWER PCB 24 4-4. Interface with PDP module 26

5.SERVICE MODE 27 5-1. Checking initial menu data 27 5-2. Entering SERVICE MODE 28 5-3. Description Of SERVICE MODE Items 30

6.Adjusting Method 33 6-1. Adjusting WHITE BALANCE 33 6-2. Adjusting POWER PCB 34

7.SOFTWARE UPGRADE Method 36

8.Main PCB Trouble Diagnosis 39 8-1. MAIN & SUB PCB Trouble Diagnosis 39 8-2. POWER PCB Trouble Diagnosis 46

9.TROUBLE DIAGNOSIS 47 9-1. Facts You Must Know When Diagnosing And Repairing 47 9-2. Typical Symptoms of PCB problem or bad Connection 47 9-3. Trouble Diagnosis and Repairing Method for Representative Symptoms 48

10.ASSEMBLY LIST 53

11.STRUCTURE OF PDP SET 54

12.EXPLODED VIEW 57

II.Parts of MODULE

1.Confirmation Manual

2.Repair Manual

-1-

I. Parts with the exception of MODULE

1. Safety Precautions

(1)When moving or laying down a PDP Set, at least two people must work together. Avoid any impact towards the PDP Set.

(2)Do not leave a broken PDP Set on for a long time. To prevent any further damages, after checking the condition of the broken Set, make sure to turn the power (AC) off.

(3)When opening the BACK COVER, you must turn off power (AC) to prevent any electric shock. When PDP is operating, high voltage and high current inside the Set can cause electric shocks.

(4)When loosening screws, check the position and type of the screw. Sort out the screws and store them separately for reassembling. Because screws holding PCBs are working as electric circuit GROUNDING, make sure to check if any screw is missing when assembling/reassembling. Do not leave any screws inside the set.

(5)If you open the BACK COVER, you will see a

Panel Gas Exhaust Tube (Picture. 1-1) inside the bracket. If this part is damaged, the entire PDP PANEL must be replaced. Therefore, when working with the set, be careful not to damage this part.

Picture 1-1. Panel Gas Exhaust Tube

(6)A PDP Set contains different kinds of

connector cables. When connecting or disconnecting cables, check the direction and position of the cable beforehand.

(7)Connect/disconnect the connectors slowly with care especially FFC (film) cables and FPC cables. Do not connect or disconnect connectors instantaneously with force, and handle them carefully for reassembling.

(8)Connectors are designed so that if the number of pins or the direction does not match, connectors will not fit. When having problem in plugging the connectors, check their kind, position, and direction.

-2-

2. Product Specification

2-1. SPECIFICATION

I T E M	S P E C I F I C A T I O N	REMARK
1. GENERAL
1-1. MODEL NO	DPN-4274NHS
1-2. CHASSIS NO	SP-200N
1-3. SCREEN SIZE	42”(16:9)
1-4. COUNTRY	USA
1-5. RESOLUTION	853(H) X 480(V)
1-6. REMOCON TYPE	R-53CP3
1-7. SAFETY STANDARD	UL, C-UL, FCC(CLASS B)
1-8 .TUNIG METHOD	FS
1-9. MEMORY CHANNEL	181CH
2. MECHANICAL
2-1. APPEARANCE
1) WITHOUT STAND	WxHxD = 1044 x 631 x 89.0mm
2) WITH STAND	WxHxD = 1044 x 705.9 x 310 mm
2-2. WEIGHT
1) WITHOUT STAND	30Kg
2) WITH STAND	34.5Kg
3. ELECTRICAL
3-1. VIDEO INPUT	COMPOSITE(NTSC, PAL, SECAM, PAL-M/N, NTSC4.43) &
	S-VHS(50/60Hz Y/C), 2 sets each
3-2. DTV/DVD INPUT	1080 i, 720P, 480P , 480i, 576P, 576i
	(Y, Pb/Cb, Pr/Cr COMPONENT SIGNAL) 2 sets each
3-3. PC INPUT	VGA ~ SXGA(Dot clock : 120MHz), 15 PIN D-SUB 1 set
3-4. DVI INPUT	DVI-D INPUT (DVI Jack) 1 set
3-5. TV INPUT
1) COLOR STANDARD	NTSC-M
2) ANTENNA IN	ONE INPUT 75 Unbalanced (F-Type)
3) RECEPTION CHANNEL
	VHF : CH02 ~ 13
	UHF : CH14 ~ 69
	CATV : CH1, 14 ~ 125
4) IF & SUBCARRIER	PIF : 45.75MHz
	SIF : 41.25MHz,
	COLOR S/C : 3.58MHz,
	SOUND S/C : 4.5MHz, 4.72MHz
3-6. SOUND INPUT	VIDEO 2 sets, DTV/DVD 2 sets, PC 1 set,DVI 1 set
3-7. SPEAKER OUTPUT	10W(R) + 10W(L)
3-8. POWER REQUIREMENT	AC 100V~240V, 50/60Hz
3-9. POWER CONSUMPTION	260W(Typical)
3-10. RS-232 CONTROL	RS-232 Communication (FOR SERVICE UPGRADE)

-3-

Product Specification

I T E M	S P E C I F I C A T I O N	REMARK
3-11. AV OUTPUT	CVBS 1 set, SOUND R/L 1 set
3-12. FUNCTION
1) SCALING	DVI : H/V SIZE
	PC: H/V SIZE ,POSITION ,PHASE, FREQUENCY
	VIDEO/DVD(480i/576i):16:9, 4:3, EnlargeLB,
	EnlargeLBS, PANORAMA
	DTV/DVD(480P or higher resolution) : 16:9, 4:3
2) ZOOM	20 STEP ZOOM and PANING Function
3) OSD Language	Support 3 Languages (English, Spanish, French)
4) OTHERS	STILL, SLEEP MODE, SOUND MODE
	TIMER, PICTURE MODE, CAPTION, V-CHIP
4. OPTICAL
4-1. SCREEN SIZE	42”(106 cm) DIAGONAL
4-2. ASPECT RATIO	16 : 9
4-3. NUMBER OF PIXELS	853(H)X480(V)
4-4. DISPLAY COLOR	16.77 Million COLOR( RGB, 8BIT each)
4-5. CELL PITCH	1.08(H)X1.08(V)mm (1 Pixel = a Set of RGB Cells )
4-6. PEAK LUMINANCE	400cd/m2(WITH FILTER GLASS)
4-7. CONTRAST RATIO	1500:1 (Dark Room)
4-8. VIEWING ANGLE	160 degree(VERTICAL/HORIZONTAL)
5. USERCONTROL & ACCESSORIES
5-1 CONTROL BUTTON(SET)	PUSH-PULL S/W : AC POWER BUTTON
	SOFT S/W: MOVE/CH(UP, DOWN), VOLUME(LEFT, RIGHT),
	MENU, INPUT SELECT
5-2. REMOTE CONTROL
(R-53CP3)	POWER, Universal Selection(TV, VIDEO/DVD, CABLE, SAT),
	10KEY(0~10), DISPLAY, 100, VCR /DVD KEY(F.R/SLOW,
	PLAY, F.F/SLOW, REC, STOP, PAUSE, OPEN/CLOSE, PREV,
	NEXT ),MENU, TV/VIDEO, MULTIMEDIA, STILL, PREV CH,
	CAPTION, MUTE, CHANNEL(UP/DOWN), VOLUME(UP/DOWN),
	PICTURE MODE, SCREEN SIZE, ZOOM-, ZOOM+, ADD/ERASE,
	SLEEP, MTS, SOUND MODE
5-3. ACCESSORIES	REMOCON, BATTERY, USERS MANUAL, A/V CABLE, RF CABLE
5-4. OPTIONAL PARTS	STAND, WALL HANGER, SPEAKER UNITS(Left, Right)

-4-

Product Specification

2-2. Available Input Signal

(1) PC & DVI

Resolution	H Freq. (KHz)	V Freq. (Hz)	Remark	DVI	PC
640x400	37.861	85.080	VESA		O
640x480	31.469	59.940	DOS	O	O
	37.861	72.809	VESA	O	O
	37.500	75.000	VESA	O	O
	43.269	85.061	VESA	O	O
720x400	31.469	70.087	IBM	O	O
	37.927	85.039	VESA		O
800x600	35.156	56.250	VESA	O	O
	37.879	60.317	VESA	O	O
	48.077	72.188	VESA	O	O
	46.875	75.000	VESA	O	O
	53.674	85.061	VESA	O	O
1024x768	48.363	60.004	VESA	O	O
	56.476	70.069	HP&VESA	O	O
	60.023	75.029	VESA	O	O
	68.677	84.997	VESA		O
1152x864	67.500	75.000	VESA	O	O
1280x960	60.000	60.000	VESA	O	O

(2) DTV

-1080i/ 60 Hz

-720P / 60 Hz

-480P / 60 Hz

(3) VIDEO

-PAL, PAL-M, PAL-N -NTSC , NTSC4.43

- SECAM

-5-

Product Specification

2-3. Remote Control Setup Code

[BRAND LIST : R-53CP3]

1. VIDEO/DVD (STANDARD : 004)					LAST UPDATE : 2004.05.19
1) VIDEO

Maker (Brand) Name	Code Number (3 digit) List

AKAI	022	048	050	108	109 126

AMPRO	076

ANAM	037	039	089

AUDIO DYNAMICS	018	029	044	048

BROKSONIC	041	043	110

CALIFORNIA AUDIO	201

CANON	034	037	039

CAPEHART	094

CRAIG	003	045	116

CURTIS MATHES	037	039

DAEWOO	004	012	014	017	068 069 094 096 097 098 102 103 104

DAYTRON	094

DBX	018	029	044	048

DENON	202	219	222

DISH	005

DYNATECH	057

ELECTROHOME	063

EMERSON	013	023	031	033	035 037 041 042 043 050 087 110 112 119

FISHER	003	015	016	017

GE	037	039	067	076	093 095 124 127 203 204

GO VIDEO	113 117

GOLDSTAR	018	019	026	087	092 100 107 205

HARMAN KARDON	018	049

HITACHI	011 048 067 118 130

INSTANTREPLAY	037	039

JCL	037	039

JCPENNY	018	019	021	039	045 070 087

JENSEN	048

JVC	018	037	039	048	052 054 059 064 111 130 132 206

KENWOOD	020	044	048	052	207

LOTTE	208

LXI	019	020	087

MAGIN	045

-6-

Product Specification

Maker (Brand) Name	Code Number (3 digit) List
MAGNAVOX	037	039	072	209

MARANTZ	018	037	039	073

MARTA	087

MATSUI	033	036

MEI	037	039

MEMOREX	003	017	020	037	039	057 076 087 115 120

MGA	049	050	063

MINOLTA	019	026

MITSUBISHI	019	026	049	050	053	055 063 065 131 223

MULTITECH	030

NAD	210

NEC	018	029	044	048	052

NORDMENDE	048

ONKYO	215

OPTIMUS	211

OPTONICA	057	058

PANASONIC	070	074	078	086	114 125 224 225

PENTAX	019	026	037	039	067

PHILCO	037	039

PHILIPS	037	039	058	075	087

PILOT	087

PIONEER	019	027	052	212	220

PORTLAND	094

PULSAR	076

QUARTZ	002	020

QUASAR	039	070	079	125

RCA	019	026	039	066	067	093 095 124 125 127 218

REALISTIC	003	015	017	020	037	039 045 057 058 087

RICO	062

RUNCO	128	227

SALORA	020

SAMSUNG	038	045	088	090	091	093 095 098 099 101 105 106 109 231

SANSUI	028	048	052	116

SANYO	003	014	017	020	115 213

SCOTT	023	043	098	110 112

-7-

Product Specification

Maker (Brand) Name	Code Number (3 digit) List
SEARS	003	015	016	017	019	020	026 037 047 077 087

SHARP	037	058	129	221	228

SHINTOM	030

SONY	003	016	037	056	060	061	062 080 081 082 129 214

STS	019

SYLVANIA	037	039	063

TANDY	017

TATUNG	044	048

TEAC	044	048

TECHNICS	037	039	226

TEKNIKA	025	037	039	087

THOMSON	203	204

TMK	013

TOSHIBA	015	019	047	051	063	085	098 112

TOTEVISION	045	087

UNITECH	045

VECTOR RESEARCH	018

VICTOR	052

VIDEO CONCEPTS	018	050

VIDEOSONIC	045

WARDS	003	019	023	030	037	039	045 057 058 112

YAMAHA	018	044	048	216	217	230

ZENITH	052	060	062	076	083	087

-8-

Product Specification

2) DVD

Maker (Brand) Name	Code Number (3 digit) List

ANAM	358 359

AKAI	354

DAEWOO	352 360

DENON	357 361

HYUNPAZ	362

KENWOOD	356

LG	350 368 369

MAGNAVOX	355

ONKYO	365 366 367

PANASONIC	357 370

PHILIPS	355

PIONCER	353

SAMSUNG	351 363 364

THOMSON	371

TOSHIBA	355

YAMAHA	357

WILL CAN	372

-9-

Product Specification

2. SAT (STANDARD : 004)

Maker (Brand) Name	Code Number (3 digit) List

ALPHASTAR DSR	122	142

AMPLICA	056

CHANNEL MASTER	020	021	022	025	061

CHAPARRAL	015	016	019	080

CITOH	060

CURTIS MATHES	056

DAEWOO	004

DISH	005

DRAKE	012	013	017	018	113

DX ANTENNA	031	052	062	079

ECHOSTAR	064	095	097	101

ELECTRO HOME	092

EUROPLUS	115

FUJITSU	024	028	029	034

GENERAL INSTRUMENT	003	011 023 065 103

HUGHES	072	137

JANIEL	066

JERROLD	067

KATHREIN	110

LUXOR	068

MACOM	017	065	069	070	071

NEXTWAVE	123	124

NORSAT	073	074

PANASONIC	066

PANSAT	120

PERSONAL CABLE	118

PHILIPS	075

PICO	107

PRESIDENT	026	104

PRIMESTAR	112

PROSAT	076

RCA	001	108	136	139

REALISTIC	049	077

SAMSUNG	122	142

SATELLITE SERVICE	035	041	053	088

SCIENTIFIC ATLANTA	039

-10-

Product Specification

Maker (Brand) Name	Code Number (3 digit) List
SONY	105	138
STARCAST	047
SUPER GUIDE	027	123	124
TEECOM	030	033	078	090	091	093	109
TOSHIBA	002	126	143
UNIDEN	023	032	048	049	050	051	054	055 081 082 083 089 103
ZENITH	084	085	086	087	094	119

-11-

Product Specification

3. CATV (STANDARD : 004)

Maker (Brand) Name	Code Number (3 digit) List
ABC	001	003	011 045 048 052 059

ANTRONIX	021

ARCHER	012	014	021	031

CABLE STAR	033

CENTURION	092

CENTURY	014

CITIZEN	014

COLOUR VOICE	069	090

COMBANO	083	084

COMTRONICS	026	037

DIAMOND	030

EAGLE	027	037	046

EASTERN	063	066	070

ELECTRICORD	039

GE	076

GEMINI	015	029	032	060

GI	001

GOLDEN CHANNEL	037

HAMLIN	055	056	061

HITACHI	001	061

HOSPITALITY	074	080

JERROLD	001	002	003	011 015 016 017 073

M-NET	043

MACOM	040

MAGNAVOX	017	019	068	082

MEMOREX	058

MOVIE TIME	035	039

NSC	022	035	044	075

OAK	023	038	043	059

PANASONIC	050	053

PARAGON	058

PHILIPS	013	019	020	027 069 085 090

PIONEER	001	041	057	067 079

POST NEWS WEEK	023

PTS	018	054	075	076

PULSAR	058

-12-

Product Specification

Maker (Brand) Name	Code Number (3 digit) List
RCA	053

REGAL	055	056

REGENCY	063

REMBRANT	032

SAMSUNG	037	072

SCIENTIFIC ATLANTA	003	018	047 048 049 051 052

SHERITECH	029

SIGNAL	037

SIGNATURE	001

SKYLIFE	004

SL MARX	037

SPRUCER	053	081

STARCOM	002	011 015 016

STARGATE	015	037

SYLVANIA	071

TADIRAN	037

TANDY	024

TELECAPATION	028

TEXSCAN	036	071

TOCOM	045	046	062

TOSHIBA	058

UNIKA	014	021	031

UNITED CABLE	011 059

UNIVERSAL	012	014	021 031 033 034 039 042

VIEWSTAR	019	022	025 086 087 088 089

ZENITH	058	065

-13-

3. BLOCK DIAGRAM

-14-

4. Description of A/V(MAIN and SUB PCB) and POWER

4-1. Block Diagram of main IC and TP

-15-

Description of A/V(MAIN and SUB PCB) and POWER

4-2. Overview

A/V block (Main and Sub PCB) is Multi Media circuit board that can process various input signals such as video, component, PC, DVI, and analog TV signal. It is mainly composed of switching, sync processing, decoding, analog TV, digital image processing, and system control part

4-2-1. Composite video and Y/C(S-Video)

Composite and Y/C have similar signal path. IC102 takes 2 composite inputs and 2 S-video inputs. The switched composite video signal goes into IC130 and then to IC132. The switched Y/C signal is directly inputted to IC132. One of composite video signal or Y/C goes through IC134 for deinterlacing and IC140 for digital image processing.

- Main IC

A.IC102: Switching IC (Input: analog inputs Output: an analog output)

B.IC130: 3D Y/C separator (Input: NTSC CVBS Output: Y/C)

C.IC132: Video processor (Input: Y/C, CVBS Output: 16bit digital, HV)

D.IC134: Deinterlacer (Input: 16bit digital, HV Output: 24bit digital RGB, HV)

E.IC140: Image Processor (Input: 24bit digital RGB, HV Output: 24bit digital RGB, HV)

- Main TP (Input: Color Bar Pattern)

TP145: Brightness signal (input to IC132)