Daewoo DPN-4274NHS User manual

http : //svc.dwe.co.kr
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 L( arts rice List)in
Service Information Center(http://svc.dwe.co.kr)
DAEWOO ELECTRONICS Corp.
Service Manual
Jun. 2004
42” PLASMA PDP TV
CHASSIS : SP-200N
MODEL : DPN-4274NHS
S/M NO. : TCP120BEF1

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-

-2-
1. Safety Precautions
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.

-3-
2. Product 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)
2-1. SPECIFICATION

-4-
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)

-5-
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

-6-
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

-7-
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

-8-
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

-9-
Product Specification
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
2) DVD

-10-
Product Specification
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
2. SAT (STANDARD : 004)

-11-
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

-12-
Product Specification
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
3. CATV (STANDARD : 004)

-13-
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

-14-
3. BLOCK DIAGRAM

-15-
4. Description of A/V(MAIN and SUB PCB) and POWER
4-1. Block Diagram of main IC and TP

-16-
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)
TP143: Color signal (input to IC132)

-17-
Description of A/V(MAIN and SUB PCB) and POWER
TP184: Horizontal sync (output of IC140)
TP187: Vertical sync (output of IC140)
TP181: Data enable (output of IC140)

-18-
Description of A/V(MAIN and SUB PCB) and POWER
4-2-2. TV signal
Tuner(PC901) receives antenna signal and outputs CVBS and sound signal. IC102 switches out the
CVBS and the rest of the signal flow is same as composite video signal flow mentioned earlier.
- Main IC
A. PC901: Tuner (Input: antenna signal Output: CVBS)
B. IC102: Switching IC (Input: CVBS Output: CVBS)
C. IC130: 3D Y/C separator (Input: NTSC CVBS Output: Y/C)
D. IC132: Video processor (Input: Y/C Output: 16bit digital, HV)
E. IC134: Deinterlacer (Input: 16bit digital, HV Output: 24bit digital RGB, HV)
F. IC140: Image Processor (Input: 24bit digital RGB, HV Output: 24bit digital RGB, HV)
- Main TP (Input: Color Bar Pattern)
TP143, 145
TP181, 184, 187, 188
4-2-3. DTV/DVD signal
Both DTV(Y, Pb, Pr) and DVD(Y, Cb, Cr) share same jack and signal path. IC102 switches out
signal and also detects type of signal so that IC121 can convert the analog signal to digital. Then
the signal goes through IC134(deinterlacer) and IC140 for digital image processing.
- Main IC
A. IC102: Switching IC (Input: Component Output: Component, HV)
B. IC121: A/D converter (Input: Component, HV Output: 24bit digital RGB, HV)
C. IC134: Deinterlacer (Input: 24bit digital RGB, HV Output: 24bit digital RGB, HV)
D. IC140: Image Processor (Input: 24bit digital RGB, HV Output: 24bit digital RGB, HV)
TP188: Clock for display (output of IC140)

-19-
Description of A/V(MAIN and SUB PCB) and POWER
- Main TP (Input: 480P, Color Bar Pattern)
TP261: Y signal (Input to IC121)
TP134: Clock (output to IC121)
TP135: Horizontal sync (output of IC121)