Daewoo DP-42SM Service Manual
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Daewoo DP-42SM Service Manual

42-inch plasma pdp monitor nec module
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Download this manual See also: Service Manual, Instruction Manual
(FOR NEC MODULE)

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Summary of Contents for Daewoo DP-42SM

  • Page 1 (FOR NEC MODULE)

  • Page 2: Table Of Contents

    CONTENTS 1. COMMENTS 2. SAFETY PRECAUTION 3. PRODUCT SPECIFICATION 4. BLOCK DIAGRAM 5. AV BLOCK DESCRIPTION 6. LVDS SPECIFICATIONS 7. SERVICE MODE (VIDEO PCB INITIAL DATA) 8. SOFTWARE UPGRADE METHOD 9. POWER ADJUSTMENTS 10.ASSEMBLY LIST 11.PDP MODULE CHECK POINT 11-1. Flow Chart 11-2.

  • Page 3: Comments

    COMMENTS This paper is the additional service manual for the DP-42SM/WM/GM using the NEC panel. Other service contents with the exception of this manual are same as the existing service manual (DP-42SM/WM/GM). The existing service manual was made for ORION panel.

  • Page 4: Safety Precaution

    2. Saf ety Precautions (1) When moving or laying down a PDP Set, at least two people must be working. Avoid any impact towards the PDP Set. (2) Do not leave the broken PDP Set on for a long time. To prevent any further damages, after check the broken Set's condition, make sure to turn the power (AC) off.

  • Page 5: Product Specification

    3. 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 DSP-4280NVS 1-2. CHASSIS NO SP-115 1-3. SCREEN SIZE 42”(16:9) 1-4. COUNTRY WORLD WIDE 1-5. RESOLUTION 853(H) X 480(V) 1-6.
  • Page 6 4. OPTICAL I T E M S P E C I F I C A T I O N REMARK 4-2. ASPECT RATIO 16:9 4-3. NUMBER OF PIXELS 853(H)X480(V) 4-4. DISPLAY COLOR 16.77 MILLION COLOR (8BIT RGB) 4-5. PIXEL PITCH 1.08(H)X1.08(V) 4-6.

  • Page 7: Block Diagram

    4. BLOCK DIAGRAM...

  • Page 8: Av Block Description

    5. A/V BLOCK DESCRIPTION 5-1. A/V BLOCK DIAGRAM...
  • Page 9 5-2.VIDEO PCB - PROCESS Various Signal (PC, COMPONENT, COMPOSITE ) to produce 24BIT DIGITAL output 1) IC and TP (1) IC400(UPD64083) -Using 3D COMBFILTER to separate COMPOSITE signal to Brightness Signal(Y) and Color Signal(C) *TP ( Input : COLOR BAR PATTERN ) A.
  • Page 10 (3) IC406 (DPTV-MVS) -A Scan Rate Converter which converts Interlace signal into Progressive signal A. VVS : VERTICAL SYNC (output by DPTV-MVS) B. VHS : HORIZONTAL SYNC (output by DPTV-MVS) C. VCLK : CLOCK (output by DPTV-MVS)
  • Page 11 (4) IC500 (CXA3516R) -3-channel 8-bit 165MSPS A/D converter which process PC , DTV signal * TP A. GCOAST : COAST CONTOL Signal for PLL (input by CXA3516) B .GHS : HORIZONTAL SYNC for GRAPHIC (output by CXA3516) C. GCLK : CLOCK for CLOCK (output by CXA3516)
  • Page 12 D. GFBK : SYNC for PLL (5) IC600 (PW171) - Image processor IC A. DEN : DATA ENABLE (output by PW171) B. DHS : HORIZONTAL SYNC (output by PW171)
  • Page 13 C.DVS : VERTICAL SYNC for DISPLAY (output by PW171) D. DCLKB : CLOCK for DISPLAY (output by PW171) 5-3. JACK PCB - Separate and process various VIDEO and AUDIO signal (1) IC706(VIDEO /SYNC SELECTOR) - This chooses Y Cb/Pb Cr/Pr or RGB signal to output Y Cb/Pb Cr/Pr, to separate SYNC, and to perform SYNC COUNTER.
  • Page 14 R_OUT(L_OUT) : AUDIO SIGNAL that goes into MSP3420 before AUDIO PROCESSING (4) IC701 .IC700 (TDA 7480) A. RIGHT(LEFT) :AMP input signal before 30dB amplification 4-1-4.KEY PCB -Input PCB using KEY 4-1-5.LED PCB - PCB for REMOCON CONTROL...
  • Page 15 6. LVDS CABLE CAUTION! After servicing, you must check if ring core is coupled with LVDS cable. Otherwise, PDP may not display. DIGITAL BOARD (PANEL) VIDEO BOARD...

  • Page 16: Service Mode (Video Pcb Initial Data)

    . SERVICE MODE (VIDEO PCB INITIAL DATA) (1) Input Selection : VIDEO (2) USER CONTROL INITIAL VALUE BRIGHTNESS : 35, CONTRAST : 47, COLOR : 32, TINT : 0 (CENTER) SHARPNESS : 4 (3) SERVICE MODE INITIAL VALUE 1) PW171 SUB-BRIGHTNESS : 28, SUB-CONTRAST : 40 R-BIAS : 64, G-BIAS : 64, B-BIAS : 64 R-GAIN : 64, G-GAIN : 64, B-GAIN : 64...

  • Page 17: Software Upgrade Method

    8. SOFTWARE UPGRADE Method 1.Connect the JACK PCB to the Video PCB. 2.Connect 9 PIN serial cable to the computer’s serial port. 3.Connect serial cable’s opposite end to Jack PCB’s RS-232C port. 4.Run PC’s Flashupgrader.exe and then push “Next(N) >” button. 1.Select current Upgrade file -Copy files sent by research center to a folder you wish to copy.
  • Page 18 1. Select as above and push “Next(N) >” button. Select Comm port and Boud rate and push “Next(N) >” button 1.Upgrade process will be displayed. Power the AC on will initiate the download.
  • Page 19 1.When all files Upgrade are complete, a window (below) will open. Push “Finish” button to complete the process.

  • Page 20: Power Adjustments

    9. POWER ADJUSTMENTS 1. Vsus (SUSTAIN Voltage) : Discharge Sustain Voltage . METER used : DIGITAL MULTIMETER (DC Voltage Measure Mode) . Adjusting TP : TP204 (refer to PAGE 11) . Adjusting VOLUME : RV203 (refer to PAGE 11) . Standard Voltage : 170V (This value could be different from the optimum adjusting voltage) .
  • Page 21 POWER ⇒ Y-SUS ( Vsus, Vyer, 15V ) POWER ⇒ X-SUS ( Vsus, Vadd, 15V ) POWER ⇒ JACK ( AUDIO PWR : ± 15 V ) POWER ⇒ VIDEO ( 5V, 12V ) HIGH VOLTAGE SWITCH POWER ⇔ VIDEO ( STB 5V, PWR_CTL ) AC POWER INPUT LINE...
  • Page 22 Vsus ‘s TP ( TP204 ) Vadd ‘s TP ( TP206 ) VOLUME for adjusting Vsus ( RV203 ) VOLUME for adjusting Vadd ( RV204 ) HIGH VOLTAGE SWITCH *HIGH VOLTAGE : Vsus, Vyer, Vadd...

  • Page 23: Assembly List

    10. ASSEMBLY LIST PCB ASS'Y NAME ASS'Y CORD ASS'Y DESCRIPTION VIDEO PCB AS PTVDMSG009 PCB VIDEO MANUAL AS JACK PCB AS PTJAMSG009 PCB JACK MANUAL AS 5V SUB PCB AS PTSBMSG009 PCB SUB MANUAL AS MODULE PDP 4850M06110 NP42B2MF02 X-SUS PCB AS 485AS00290 X-SUS PCB AS (NP42B2MF02 NEC) Y-SUS PCB AS...

  • Page 24: Pdp Module Check Point

    11. PDP MODULE CHECK POINT 11-1. Flow Chart Check process Type, Serial Number Take pictures (Module and shipment box) Panel Crack Flexible Cable Take pictures Take pictures Connectors If you can confirm visual malfunction, Tester Checking take pictures Input it in your line again Phenomenon Each Strip Defect Vertical Line Horizontal Line No Display Writing Issues...

  • Page 25: Serial Number

    11-2. Serial Number Module Number and Panel ID SERIAL NO. Serial No. 302200129 Panel ID Vd=60V 222301242941 Vs=168.4V Type CODE CA-01...

  • Page 26: Panel Crack

    11-3. Panel Crack Panel Crack Check the surface of glass whether crack or not This issue may be caused by transportation or treatment after shipment. We would like you to take some pictures, the broken module, the outside box, and inform the shipment data If you do not the pictures, we can dispose the broken modules on our responsibility.

  • Page 27: Flexible Cable

    11-4. Flexible cable Flexible Cable Check the Flexible Cables whether scratched, broken, or not. Cutting cable or broken In this case, it caused by handling them at customer line. We would like you to be careful to handle the modules.

  • Page 28: Connectors

    11-5. Connectors Connectors Condition Check the Cable or Connectors whether connected and locked, or not NEC MODULE ONLY (with the exception of video, power and jack board) DIGITAL BOARD 5 connectors SCAN BOARD 11 connectors COMMON BOARD 7 connectors DATA RELAY BOARD 2 connectors DATA RELAY BOARD 2 connectors We would like you to be careful to handle the modules at assembling...
  • Page 29 Each Connectors Condition Data HIC DIGITAL BOARD DIGITAL BOARD SCAN BOARD -SACN DRIVING BOARD -DATA RELAY BOARD -DATA RELAY BOARD -DATA RELAY BOARD LOCKED UNLOCKED...
  • Page 30 Each Connectors Condition COMMON BOARD DIGITAL BOARD - FLEXIBLE CALBLE - FLEXIBLE CALBLE CONNECTED LOCKED UNLOCKED UNCONNECTED...

  • Page 31: Tester Checking

    11-6. Tester Checking Fuse Checking Glass fuse Glass fuse (F1 and F2) (F1 and F2) on Scan Board on Common Board OK : OK : Shortage Shortage NG : NG : Opened Opened Fuse resistance Fuse resistance (R12 R29) (R101) on Scan Board on Common Board R12 OK : 2.2...
  • Page 32 Alarm Line Checking Glass Alarm Glass Alarm At #50 pin on CN8 between pins on CN3 On Data Relay Board On Scan Board (Right-Down) OK : OK : Shortage Shortage NG : NG : Opened Opened...
  • Page 33 Data HIC line Checking Between F2 fuse and GND F2 fuse and GND on scan board OK : Opened NG :Short F2 fuse and GND on scan board Between F2 fuse and GND Check between F2 fuse and GND at scan or common board. If it is shortage, Remove the heatsink over the data HIC, And Check the surface of data HIC, the take a picture...
  • Page 34 Parts Location COMMON Board COMMON Board PH2101 PH2101 PH2102...
  • Page 35 Power HIC Checking PH2101 on Common board Check the following cases. PH2101 on common board PH2101 PH2101 Between A and G OK : More than Between B and H K ohm Between C and D NG : Shortage Between E and F...
  • Page 36 Power HIC Checking PH2101 on Scan board Check the following cases. PH2101 on scan board PH2101 Between A and G OK : More than Between B and H K ohm Between C and D NG : Shortage Between E and F...
  • Page 37 Power HIC Checking PH2102 on Scan board Check the following cases. PH2101 on common board PH2102 PH2102 Between A and B OK : More than Between B and C K ohm Between D and E NG : Shortage Between F and G Between H and I Between J and K...
  • Page 38 SCAN IC Driver Checking Scan IC NEGA Scan POSI NEGA POSI OK : More than K ohm NG : Shortage Check the following cases. Between NEGA and POSI...

  • Page 39: Strip Defect

    11-7. Strip Defect Strip Defect Compare with specification 1 Strip 2 Strip 2 Strip...
  • Page 40 Strip Defect 3 Strip 3 Strip 3 Strip...

  • Page 41: Vertical Line

    11-8. Vertical Line Vertical Line Single line Open Mode ALL Red ALL Green ALL Blue ALL Black Pattern Pattern Pattern Pattern Black 1 Line Red 1 Line Red1 Line Appearance Red 1 Line Open Mode [Check Point] The broken data flexible cable. If OK, Data IC Broken.
  • Page 42 Vertical Line Two line Shortage Mode ALL Red ALL Green ALL Blue ALL Black Pattern Pattern Pattern Pattern Blue 1 Line Red1 Line Appearance Appearance Shortage between Red and Blue [Check Point] This phenomenon is caused by panel issues.
  • Page 43 Vertical Line Block 1/2 data IC Block (width 30mm) a) The broken surface IC on data IC. [Check Point] b) The broken data flexible cable.
  • Page 44 Block Vertical Line 1 data IC Block [Check Point] a) Lacking connector between Data Relay board and Data IC. b) The broken data flexible cable.
  • Page 45 Vertical Line Block Many data IC Block [Check Point] a) Lacking connector between Data Relay board and Scan or Common board b) The broken data flexible cable c) Shortage between leads in connector. Foreign Material etc.

  • Page 46: Horizontal Line

    11-9. Horizontal Line Horizontal Line Single line, two lines or block Single Two Line Block Block [Check Point] NEGA a)The broken surface IC on scan IC driver. Check the resistance between NEGA and POSI on scan IC board. (Normal : K ohm Level) POSI b) The broken data flexible cable.

This manual is also suitable for:

Dp-42wmDp-42gm

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