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.
Contents I. Parts with the exception of MODULE 1. Safety Precautions 2. Product Specification 2-1. SPECIFICATION 2-2. Available Input Signal 2-3. Remote Control Setup Code 3. BLOCK DIAGRAM 4. Description Of A/V and power 4-1. Block Diagram of main IC and TP 4-2. Overview 4-3. POWER PCB 4-4. Interface with PDP module 5. SERVICE MODE 5-1. Checking initial menu data 5-2. Entering SERVICE MODE 2 3 3 5 6 14 15 15 16 24 26 27 27 5-3. Description Of SERVICE MODE Items 6. Adjusting Method 6-1.
I. Parts with the exception of MODULE 1. Safety Precautions 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.
2. Product Specification 2-1. SPECIFICATION ITEM 1. GENERAL 1-1. MODEL NO 1-2. CHASSIS NO 1-3. SCREEN SIZE 1-4. COUNTRY 1-5. RESOLUTION 1-6. REMOCON TYPE 1-7. SAFETY STANDARD 1-8 .TUNIG METHOD 1-9. MEMORY CHANNEL 2. MECHANICAL 2-1. APPEARANCE 1) WITHOUT STAND 2) WITH STAND 2-2. WEIGHT 1) WITHOUT STAND 2) WITH STAND 3. ELECTRICAL 3-1. VIDEO INPUT 3-2. DTV/DVD INPUT 3-3. PC INPUT 3-4. DVI INPUT 3-5. TV INPUT 1) COLOR STANDARD 2) ANTENNA IN 3) RECEPTION CHANNEL 4) IF & SUBCARRIER 3-6. SOUND INPUT 3-7.
Product Specification ITEM 3-11. AV OUTPUT 3-12. FUNCTION 1) SCALING 2) ZOOM 3) OSD Language 4) OTHERS 4. OPTICAL 4-1. SCREEN SIZE 4-2. ASPECT RATIO 4-3. NUMBER OF PIXELS 4-4. DISPLAY COLOR 4-5. CELL PITCH 4-6. PEAK LUMINANCE 4-7. CONTRAST RATIO 4-8. VIEWING ANGLE 5. USERCONTROL & ACCESSORIES 5-1 CONTROL BUTTON(SET) 5-2. REMOTE CONTROL (R-53CP3) 5-3. ACCESSORIES 5-4.
Product Specification 2-2. Available Input Signal (1) PC & DVI Resolution 640x400 640x480 720x400 800x600 1024x768 1152x864 1280x960 H Freq. (KHz) 37.861 31.469 37.861 37.500 43.269 31.469 37.927 35.156 37.879 48.077 46.875 53.674 48.363 56.476 60.023 68.677 67.500 60.000 V Freq. (Hz) 85.080 59.940 72.809 75.000 85.061 70.087 85.039 56.250 60.317 72.188 75.000 85.061 60.004 70.069 75.029 84.997 75.000 60.000 (2) DTV -1080i/ 60 Hz -720P / 60 Hz -480P / 60 Hz (3) VIDEO -PAL, PAL-M, PAL-N -NTSC , NTSC4.
Product Specification 2-3. Remote Control Setup Code [BRAND LIST : R-53CP3] 1.
Product Specification Maker (Brand) Name MAGNAVOX MARANTZ MARTA MATSUI MEI MEMOREX MGA MINOLTA MITSUBISHI MULTITECH NAD NEC NORDMENDE ONKYO OPTIMUS OPTONICA PANASONIC PENTAX PHILCO PHILIPS PILOT PIONEER PORTLAND PULSAR QUARTZ QUASAR RCA REALISTIC RICO RUNCO SALORA SAMSUNG SANSUI SANYO SCOTT Code Number (3 digit) List 037 039 072 209 018 037 039 073 087 033 036 037 039 003 017 020 037 039 057 049 050 063 019 026 019 026 049 050 053 055 030 210 018 029 044 048 052 048 215 211 057 058 070 074 078 086 114 125
Product Specification Maker (Brand) Name SEARS SHARP SHINTOM SONY STS SYLVANIA TANDY TATUNG TEAC TECHNICS TEKNIKA THOMSON TMK TOSHIBA TOTEVISION UNITECH VECTOR RESEARCH VICTOR VIDEO CONCEPTS VIDEOSONIC WARDS YAMAHA ZENITH Code Number (3 digit) List 003 015 016 017 019 020 037 058 129 221 228 030 003 016 037 056 060 061 019 037 039 063 017 044 048 044 048 037 039 226 025 037 039 087 203 204 013 015 019 047 051 063 085 045 087 045 018 052 018 050 045 003 019 023 030 037 039 018 044 048 216 217 230 052 060 0
Product Specification 2) DVD Maker (Brand) Name ANAM AKAI DAEWOO DENON HYUNPAZ KENWOOD LG MAGNAVOX ONKYO PANASONIC PHILIPS PIONCER SAMSUNG THOMSON TOSHIBA YAMAHA WILL CAN Code Number (3 digit) List 358 359 354 352 360 357 361 362 356 350 368 369 355 365 366 367 357 370 355 353 351 363 364 371 355 357 372 -9-
Product Specification 2.
Product Specification Maker (Brand) Name SONY STARCAST SUPER GUIDE TEECOM TOSHIBA UNIDEN ZENITH Code Number (3 digit) List 105 138 047 027 123 124 030 033 078 090 091 093 109 002 126 143 023 032 048 049 050 051 054 055 081 082 083 089 103 084 085 086 087 094 119 -11-
Product Specification 3.
Product Specification Maker (Brand) Name RCA REGAL REGENCY REMBRANT SAMSUNG SCIENTIFIC ATLANTA SHERITECH SIGNAL SIGNATURE SKYLIFE SL MARX SPRUCER STARCOM STARGATE SYLVANIA TADIRAN TANDY TELECAPATION TEXSCAN TOCOM TOSHIBA UNIKA UNITED CABLE UNIVERSAL VIEWSTAR ZENITH Code Number (3 digit) List 053 055 056 063 032 037 072 003 018 047 048 049 051 052 029 037 001 004 037 053 081 002 011 015 016 015 037 071 037 024 028 036 071 045 046 062 058 014 021 031 011 059 012 014 021 031 033 034 039 042 019 022 025 086 0
3.
4. Description of A/V(MAIN and SUB PCB) and POWER 4-1.
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.
Description of A/V(MAIN and SUB PCB) and POWER TP181: Data enable (output of IC140) TP184: Horizontal sync (output of IC140) TP187: Vertical sync (output of IC140) -17-
Description of A/V(MAIN and SUB PCB) and POWER TP188: Clock for display (output of IC140) 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.
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) -19-
Description of A/V(MAIN and SUB PCB) and POWER TP136: Vertical sync (output of IC121) 4-2-4. PC (Personal Computer)signal PC signal is switched out by IC109 and input to IC114 for A/D conversion. Then the signal goes through IC140 for digital image processing. - Main IC A. IC109: Switching IC (Input: Analog RGB, H, V Output: Analog RGB, H, V) B. IC114: A/D converter (Input: Analog RGB, H, V Output: 24bit digital RGB, H, V) C.
Description of A/V(MAIN and SUB PCB) and POWER TP128: SYNC for PLL (output of IC114) TP127: Output clock (output of IC114) 4-2-5. DVI(Digital Visual Interface) signal To process DVI signal, graphic card of AV device reads EDID data from IC101(ROM). Then DVI signal is directly inputted to IC112, which outputs digital 24bit RGB and H, V. The output goes through IC140 for digital image processing. - Main IC A. IC101: ROM containing EDID data (EDID: display capabilities such as resolution, aspect ratio etc.
Description of A/V(MAIN and SUB PCB) and POWER - Main TP (Input: Color Bar Pattern) TP116: Horizontal sync (output of IC112) TP117: Vertical sync (output of IC112) 4-2-6. Video Enhancer and LVDS transmitter (for all inputs) Outputs of IC140 are inputted to IC149(video signal enhancer) which improves picture quality greatly. Outputs of IC149 are inputted to IC150 which is a LVDS transmitter. The converted LVDS signal is transmitted to the digital board. - Main IC A.
Description of A/V(MAIN and SUB PCB) and POWER 4-2-7. Audio signal processing, KEY, and LED IC104 switches Audio signals and passes a switched signal to IC904 for audio signal processing. IC904 controls sound parameters such as Volume, Balance, and Equalize. The outputs of IC904 are passed to IC901(left), and IC903(right) respectively to amplify the signals. KEY and LED PCBs send signals received from key buttons and LED to IC140 for command processing. - Main IC A. IC104 B. IC904 C.
Description of A/V(MAIN and SUB PCB) and POWER Remote control signal 4-3. POWER PCB Rating: AC100V ~ AC240V (Variable Range- AC85V~ AC276V) Regulation Method: Transistor & Switching Method Input Frequency: 50~60Hz (Variable Range- 45Hz ~ 66Hz) Inrush Current: Below 30A at AC264V Output Voltage is shown below. No. Output 1 2 3 4 5 6 7 8 Vs Voltage Rating (V) 175 Variable Range (V) 160-190 Va 5Vcntl 5V V3 (SOUND) 33VT 12V Vstb 60 5.1 5.1 17 -17 33 12 5 50-65 4.75~5.25 4.75~5.
Description of A/V(MAIN and SUB PCB) and POWER Connector Pin number Connector number Model name Maker The number of pins 1 2 3 4 5 6 7 8 9 10 Connector number Model name Maker The number of pins 1 2 3 4 Pin 5 number 6 7 8 9 10 CN806 B10P-VH JST 10 ALARM (LVP) GND GND GND GND Vd Vd NC Vs Vs CN803 YMW025-10R YEONHO 10 5V Stand-by Power GND GND 5V GND GND 12V 12V NC CN804 (NOT USED) YMW025-05R YEONHO 5 3.3V 3.3V GND GND 2.5V 2.5V GND GND * CN806 is connected to CN301 of HIGH VOLTAGE PCB.
Description of A/V(MAIN and SUB PCB) and POWER 4-4.
5. SERVICE MODE 5.1 Checking initial menu data (1) Check initial data of User Menu 1) Picture - Mode : Normal BRIGHTNESS : 32 CONTRAST : 48 COLOR : 32 Tint : 32 (CENTER) * Not displayed when input signal is PAL or SECAM Sharpness : 32 - Color Temp. : Normal 2) Sound - Balance : 0 (CENTER) - Effect : Off - AVC : Off - Mode : Normal 120 Hz : 0 (CENTER) 500 Hz : 0 (CENTER) 1.
SERVICE MODE 5) Channel(TV input only) - Ch Mode : Cable - Channel : 2 - Memory : Erase - Fine Tune : 0 - Auto Search 5-2 Entering SERVICE MODE To enter SERVICE MODE Press “ VOL” => “MUTE” => “DISPLAY” => “MUTE” BUTTON of Remote Controller (1) Check initial data of Service mode 1) PW 181-1 - Sub Brt : 24 - Sub Cont : 8 - Bias R : 32 - Bias G : 32 - Bias B : 32 - Gain R : 14 - Gain G : 16 - Gain B : 16 2) PW 181-2 - DVI Brt : 16 - DVI Cont : 0 - Sharp Filter : Normal 3) VPC 3230 - Comm Brt : 139 - Comm Con
SERVICE MODE - Gain G : 128 - Gain B : 128 5) 9883_V - Bias Cr : 64 - Bias Y :60 - Bias Cb : 64 - Gain Cr : 128 - Gain Y : 128 - Gain Cb : 128 6) MDIN 150 - Bright : 128 - Contrast : 64 - Color : 64 - NR : Off 7) Enhncr - B&W : ON - FCT : ON - ACR : ON - Gamma : ON - Dither : ON - SEISAI : ON 8) MSP 34xx - Sc pScale : 21 - FM pScale : 25 9) Misc - Tst Ptrn : AT - Tst Ptrn : MA - TV AT OFF : ON 10) Info (firmware version information) 11) Reset - Level 1 - Level 2 - Factory 12) Panel (NEC 42” SD) - 50Hz Mode
SERVICE MODE 5-3. Description of SERVICE MODE Items 1) PW181-1 : Image processor control values. Mainly used to adjust White balance. [Note] These values need to be adjusted only after replacing MAIN PCB. These values may vary from set to set. Therefore if these values are recorded before replacing MAIN PCB, you do not need to adjust WHITE BALANCE additionally.
SERVICE MODE (1) Bias R : For R BRIGHTNESS adjustment (PC) (2) Bias G : For G BRIGHTNESS adjustment (PC) (3) Bias B : For B BRIGHTNESS adjustment (PC) (4) Gain R: For R CONTRAST adjustment (PC) (5) Gain G: For G CONTRAST adjustment (PC) (6) Gain B: For B CONTRAST adjustment (PC) 5) 9883_V : Video port A/D converter control values. Used to adjust picture quality of Component inputs. [Note] The following values do not need to be adjusted after replacing MAIN PCB.
SERVICE MODE 9) MISC (1) TST PTRN AT : Cycled patterns from R G B WH every 1 minute automatically. (2) TST PTRN MA : Cycled patterns from BK WH R G B by pressing volume up key (3) TV AT OFF : When in TV mode and no signal is detected for 30 min, the set is turned off automatically. 10) INFOR : MICOM(firmware) version information (year 4 digits, month 2 digits, date 2 digits and time 4 digits : e.g. 200409221030 ) 11) RESET (1) LEVEL 1: Reset all values (service mode & user menu).
6. Adjusting Method 6-1. WHITE BALANCE Adjustment 1) Apply 5 Step Gray Scale pattern to Video input terminal (Pattern generator: MIK 7253S) Figure 6-1 Step Gray Scale Pattern 2) Check initial data from USER CONTROL (refer to 5-1) 3) In order to start Service mode, press button in following order “ Vol -> Mute -> Recall (Display) -> Mute” of the remote control. And then select PW181-1 for checking initial data of the SERVICE MODE (refer to 5-2).
Adjusting Method 6-2. POWER ADJUSTMENTS Video pattern condition: 100 IRE Full White Pattern Power Adjustment is controlling the panel values set by module maker previously. If there is problem after power adjustment, classify as a defect and contact PDP module maker. 1. Vs (Vsus Voltage): Sustain Voltage Measurement equipment : Digital Volt Meter ( DC Volt mode ) Adjusting TP : TP204 (See Picture 6-2) Adjusting Voltage : The voltage which is written at upper center of DATA BAR in PDP Module.
Adjusting Method 2. Vd (Vadd Voltage) : DATA Input Voltage Measurement equipment : Digital Volt Meter ( DC Volt mode ) Adjusting TP : TP206 (See Picture. 6-2) Adjusting VOLUME: Adjusting Voltage : The voltage which is written at upper center of DATA BAR in PDP Module. (Typical Voltage: Picture - Picture. 6-2) Picture. 6-2 Power Adjustment Points < Note > 1. Auto & Normal S/W This switch is used to test power board therefore for normal operation always set it to “NORMAL”. Do not touch while operating 2.
7. SOFTWARE UPGRADE Method 1. Check whether MAIN PCB is connected to SUB PCB(JP117 to JA109). 2. Connect 9-PIN serial cable to the serial port of the computer. 3. Connect the opposite end of the serial cable to RS-232C port of SUB PCB. 4. Run Flashupgrader.exe in the PC to excute the program as shown below. 5. Select current Upgrade file - Click “Choose...” button to select the file you want to upgrade. - Select the file (pwSDK.inf) that you want to upgrade.
SOFTWARE UPGRADE Method 6. Select correct COM Port and Baud Rate(115200) as shown below. Then press Flash button to finish setup. 7. Turn on the ac power and then upgrade program will start the download as shown below.
SOFTWARE UPGRADE Method 8. When the upgrading is complete, a window (below) will be opened. Press “Finish” button to complete the process.
8. Main PCB Trouble Diagnosis 8-1. MAIN & SUB PCB Trouble Diagnosis [NOTE] Refer to “PDP MODULE” section for trouble diagnosis other than MAIN, SUB and POWER PCB. 1. Common checking process when “No signal” or “No raster” (No signal: OSD is working but no images are displaying, No raster: Not even OSD is displaying) Ch eck start Y N Does "No si gn al " screen appear ? Is a weak discharge detected in the screen? N 1.Check AC connection 2. Check Power S/W ON 3.
Main PCB Trouble Diagnosis When Y Cb Cr input : TP261 located in the center of the PCB near IC121. COMPOSITE Input : Check Positive polarity of CE203 located near IC132. S- VHS input : Check Negative polarity of CE284 located near IC159. If above signals do not appear, MAIN PCB needs to be replaced. (3) With Video or S-Video inputs Check TP138(V sync), TP139(H sync) If signals do not appear, replace MAIN PCB.
Main PCB Trouble Diagnosis (4) With Component inputs Check TP136(V sync), TP135(H sync) If signals do not appear, replace MAIN PCB. 3. When DTV (1080i, 720P, 480P) signal do not appear on screen (1) Input PC or VIDEO signal and see if PC or VIDEO images are displaying. If “no signal”, check TP188, 187 and 184. If DCLKB, DHS and DVS signal do not appear, replace MAIN PCB. (2) Check TP136(V sync), TP135(H sync) If above signals do not appear, replace MAIN PCB. 4.
Main PCB Trouble Diagnosis If above signal do not appear, replace MAIN PCB.
Main PCB Trouble Diagnosis 5. When No Sound Check start Y N Do images display on screen? 1. Check AC connection 2. Check Power S/W ON 3. Check MAIN or other PCBs Y N Check the connection of Jack(PDP and AV device) Is the Sound input Jack properly connected? Y N Is the Speaker connection correctly connected? Check the connection of Speaker Y With a Video input(video&sound) Outputs of 4th and 19th of JA109 ok? N 1. Check connection between MAIN and SUB PCB 2. Or IC104's problem. Replace MAIN PCB.
Main PCB Trouble Diagnosis 6. When Key does not operate Check start Y N Does LED next to Power S/W turn on (red light)? 1. Check AC connection 2. Check Power S/W ON 3. Check other PCBs Y N Check the connection of KEY PCB toMAIN PCB Does LED turn on (green light)? Y N Is 5th pin from the top of PC102 output normal? Y Check MAIN PCB -44- 1. Replace the CONNCETOR. 2. Replace Key PCB.
Main PCB Trouble Diagnosis 7. When Remote Controller does not operate Check start Y N Does LED next to Power S/W turn on (red light)? 1. Check AC connection 2. Check Power S/W ON 3. Check other BLOCKs Y Is Remote Controller working? N Check the Battery of Remote Controller Y Does Set turn on by pressing a key button? N Check the connection of LED PCB to MAIN PCB Y Using an oscilloscope check TP113 near PC101. Does it output a signal whenever a remote controller button is pressed? Y 1.
Main PCB Trouble Diagnosis 8-2. POWER PCB Trouble Diagnosis After checking High Voltage Board / Scan Relay Board / Data Relay Board (refer to II. PDP MODULE), and the set still does not operate, then check if the following Power PCB’s Trouble Symptoms appear. After unplugging Power Connectors of Power PCB (CN806 and CN805) and checking remaining voltage, there still exist several tens of remaining voltage.
9. TROUBLE DIAGNOSIS [NOTE] Refer to “PDP MODULE” section for module diagnosis. * Refer to Chapter II for Symptoms of other parts with exception of MAIN, SUB PCB and POWER PCB Trouble. 9-1. Facts you must know when trouble diagnosing or repairing (1) Trouble diagnosing and repairing of set mean find out which PCBs or blocks are not working and replace them with new PCBs. Repairing the broken PCBs are not necessary. Keep the broken PCBs and return them to service center or R&D center.
TROUBLE DIAGNOSIS (2) Symptoms of MAIN or SUB PCB Trouble Only a weak discharge shows on the screen, but it is displaying No images. Images are abnormal Particular input signal (Video, PC or Component etc.) does not work. No SOUND Occasionally, set does not operate normally. Turning off and on the AC power make the set to operate normal again. Remote Control or KEY does not work.
TROUBLE DIAGNOSIS (2) When weak Discharge exists on screen but “OSD screen” can not be seen <1> Definition of this symptom - When the set is turned on, screen is BLACK but Weak Discharge (luminescence) exists. - OSD does not show on screen and the set does not respond to remote controller or KEY panel buttons. <2> PCB CHECK PRIORITY - MAIN PCB, SUS PCB <3> Repairing Procedure - Check LVDS cable (MAIN PCB to DIGITAL PCB) first and then other connectors connecting MAIN PCB.
TROUBLE DIAGNOSIS Turn AC power OFF Open BACK COVER Disconnect CN801, CN803, CN805, CN806 of POWER PCB and set AUTO & NORMAL S/W of Power PCB to AUTO "SHUT DOWN" occur? YES NO Set POWER PCB'S VOLTAGE SWITCH to LOW (refer to Fig. 4) Replace POWER PCB Turn AC power ON (STAND BY) Turn ON the SET YES NO "SHUT DOWN" occur? * LOW VOLTAGE part is problem. * Related PCBs DIGITAL, MAIN, SUB * HIGH VOLTAGE part is problem.
TROUBLE DIAGNOSIS Turn AC PWR OFF Set VOLTAGE SWITCH of POWER PCB to LOW (Picture 6-2) Unplug Connectors connecting High Voltage and POWER PCB(CN806) AC PWR "ON" => PWR "ON" with Remote Controller "SHUT DOWN" occur? YES NO AC PWR "OFF" => AC PWR "OFF" Unplug Connectors connecting High Voltage and DIGITAL PCB(CN601) Unplug Connectors connecting High Voltage and DATA PCB(CN7) Unplug Connectors connecting SUB and POWER PCB(CN801) Unplug Connectors connecting High Voltage and POWER PCB(CN805) Unplug
TROUBLE DIAGNOSIS AC PWR "OFF" Do DIODE TEST On High Voltage, Scan Relay Board Tests Passed? YES NO Replace failed PCB Replace Scan Relay Board AC PWR "ON" => PWR "ON" with Remote Controller YES "SHUT DOWN" accur? Replace High Voltage Board NO Diagnosis Complete Fig.
10. ASSEMBLY LIST No.
11.
STRUCTURE OF PDP SET COMPONENTS 1) PDP MODULE (with F/SUPPORT) PICTURE 1a) HIGH VOLTAGE PKG 1b) Common Bypass PKG 1c) Common Relay PKG(R) -55- REMARK
STRUCTURE OF PDP SET COMPONENTS 1d) Data Relay PKG(L) PICTURE 1e) Data Relay PKG(R) 1f) Scan Relay PKG-T 1g) Scan Relay PKG-B -56- REMARK
COMPONENTS 1h) Digital PKG PICTURE 2) MAIN BOARD 3) SUB BOARD 4) POWER BOARD -57- REMARK
STRUCTURE OF PDP SET COMPONENTS 5) FRONT MASK PICTURE 6) FILTER GLASS 7) BACK COVER -58- REMARK
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