Daewoo DP-42SM Service Manual Download Page 31 | Manualshive

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Fuse Checking

Glass fuse

(F1 and F2)

on Common Board

Glass fuse

(F1 and F2)

on Scan Board

Fuse resistance

(R101)

on Common Board

Fuse resistance

(R12 R29)

on Scan Board

OK :

Shortage

NG :

Opened

OK :

Shortage

NG :

Opened

R12 OK : 2.2

ohms

R29 OK : 4.7

ohms

OK : 2.2

ohms

NG :

Opened

11-6. Tester Checking

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Summary of Contents for DP-42SM

Page 1: ...FOR NEC MODULE...

Page 2: ...CATIONS 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 Serial Number 11 3 Panel Crack 11 4 Flexible...

Page 3: ...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...

Page 4: ...k if any screw is missing when assembling 5 If you open the BACK COVER you will see a Panel Gas Exhaust Tube If this part is damaged entire PDP PANEL must be replaced Therefore when working be careful...

Page 5: ...INPUT 3 3 PC INPUT 3 4 SOUND INPUT 3 4 SPEAKER OUTPUT 3 5 POWER REQUIREMENT 3 6 POWER CONSUMPTION 3 8 RS 232 CONTROL 3 9 FUNCTION 1 SCALING 2 ZOOM 3 OSD 4 OTHERS WxHxD 1 039 x 628 x 80 mm WxHxD 1 039...

Page 6: ...STAND WALL HANGER SPEAKER R L 5 USERCONTROL ACCESSORY 5 1 CONTROL BUTTON SET 5 2 REMOTE CONTROL R V28 5 3 ACCESSORIES 16 9 853 H X480 V 16 77 MILLION COLOR 8BIT RGB 1 08 H X1 08 V 300cd m WITH FILTER...

Page 7: ...6 4 BLOCK DIAGRAM...

Page 8: ...7 5 A V BLOCK DESCRIPTION 5 1 A V BLOCK DIAGRAM...

Page 9: ...to separate COMPOSITE signal to Brightness Signal Y and Color Signal C TP Input COLOR BAR PATTERN A YCOMP Brightness Signal Y B CCOMP Color Signal C 2 IC401 SAA7118E Receive NTSC SECAM PAL VIDEO by CO...

Page 10: ...406 DPTV MVS A Scan Rate Converter which converts Interlace signal into Progressive signal TP A VVS VERTICAL SYNC output by DPTV MVS B VHS HORIZONTAL SYNC output by DPTV MVS C VCLK CLOCK output by DPT...

Page 11: ...R 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...

Page 12: ...11 D GFBK SYNC for PLL 5 IC600 PW171 Image processor IC TP A DEN DATA ENABLE output by PW171 B DHS HORIZONTAL SYNC output by PW171...

Page 13: ...s 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 2 IC704 7_INPUT 3_OUTPUT AUDIO VIDEO...

Page 14: ...T AUDIO SIGNAL that goes into MSP3420 before AUDIO PROCESSING 4 IC701 IC700 TDA 7480 TP 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...

Page 15: ...14 6 LVDS CABLE VIDEO BOARD DIGITAL BOARD PANEL CAUTION After servicing you must check if ring core is coupled with LVDS cable Otherwise PDP may not display...

Page 16: ...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 2 SAA7118 SUB BRT 128 SUB CONT 50 SUB CLR 55 SUB TNT 0 SUB SRP 10 3 D...

Page 17: ...e 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 rese...

Page 18: ...17 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: ...18 1 When all files Upgrade are complete a window below will open Push Finish button to complete the process...

Page 20: ...ated in the LABEL See voltage adjustment label in the top of Panel Back Plate PAGE 11 2 Vadd ADDRESS voltage DATA Input Voltage METER used DIGITAL MULTIMETER DC Voltage Measure Mode Adjusting TP TP206...

Page 21: ...20 POWER JACK AUDIO PWR 15 V POWER VIDEO 5V 12V HIGH VOLTAGE SWITCH POWER VIDEO STB 5V PWR_CTL AC POWER INPUT LINE POWER Y SUS Vsus Vyer 15V POWER X SUS Vsus Vadd 15V...

Page 22: ...21 GND Vsus s TP TP204 Vadd s TP TP206 VOLUME for adjusting Vsus RV203 HIGH VOLTAGE SWITCH HIGH VOLTAGE Vsus Vyer Vadd ON VOLUME for adjusting Vadd RV204...

Page 23: ...396 09V ULW 400 4850709N06 CONNECTOR 16 YMH025 07R YMH025 07R ULW 220 4850707N11 CONNECTOR 15 YMH025 11R YMH025 11R ULW 230 4850711N04 CONNECTOR 14 PDD 421 4850M05910 MODULE POWER 13 PDF 6PH02 4952400...

Page 24: ...cal Line Horizontal Line No Display Writing Issues Page 38 39 Page 41 44 Page 45 Take pictures Module and shipment box Take pictures Take pictures If you can confirm visual malfunction take pictures I...

Page 25: ...24 Module Number and Panel ID SERIAL NO 302200129 Vd 60V Vs 168 4V CODE CA 01 Serial No Type Panel ID 222301242941 11 2 Serial Number...

Page 26: ...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 c...

Page 27: ...le Check the Flexible Cables whether scratched broken or not In this case it caused by handling them at customer line We would like you to be careful to handle the modules Cutting cable or broken 11 4...

Page 28: ...RELAY BOARD 2 connectors DIGITAL BOARD 5 connectors Connectors Condition Check the Cable or Connectors whether connected and locked or not We would like you to be careful to handle the modules at ass...

Page 29: ...28 Each Connectors Condition Data HIC DIGITAL BOARD DIGITAL BOARD SCAN BOARD DATA RELAY BOARD DATA RELAY BOARD DATA RELAY BOARD SACN DRIVING BOARD LOCKED UNLOCKED...

Page 30: ...29 Each Connectors Condition COMMON BOARD DIGITAL BOARD LOCKED UNLOCKED FLEXIBLE CALBLE FLEXIBLE CALBLE CONNECTED UNCONNECTED...

Page 31: ...Common Board Glass fuse F1 and F2 on Scan Board Fuse resistance R101 on Common Board Fuse resistance R12 R29 on Scan Board OK Shortage NG Opened OK Shortage NG Opened R12 OK 2 2 ohms R29 OK 4 7 ohms O...

Page 32: ...31 Alarm Line Checking Glass Alarm At 50 pin on CN8 On Data Relay Board Right Down Glass Alarm between pins on CN3 On Scan Board OK Shortage NG Opened OK Shortage NG Opened...

Page 33: ...ort age F2 fuse and GND on scan board OK Opened NG Shortage 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 Ch...

Page 34: ...33 Parts Location COMMON Board PH2101 COMMON Board PH2101 PH2102...

Page 35: ...HIC Checking PH2101 PH2101 on Common board PH2101 on common board Between A and G Between B and H Between C and D Between E and F OK More than K ohm NG Shortage PH2101 A B C D E F G H Check the follow...

Page 36: ...r HIC Checking PH2101 PH2101 on Scan board PH2101 on scan board Between A and G Between B and H Between C and D Between E and F OK More than K ohm NG Shortage PH2101 A B C D E F G H Check the followin...

Page 37: ...2 PH2102 on Scan board PH2101 on common board Between A and B Between B and C Between D and E Between F and G Between H and I Between J and K OK More than K ohm NG Shortage PH2102 A B Check the follow...

Page 38: ...37 SCAN IC Driver Checking Scan IC Scan IC Between NEGA and POSI OK More than K ohm NG Shortage NEGA POSI Check the following cases NEGA POSI...

Page 39: ...38 Strip Defect 1 Strip Compare with specification 2 Strip 2 Strip 11 7 Strip Defect...

Page 40: ...39 Strip Defect 3 Strip 3 Strip 3 Strip...

Page 41: ...en Mode ALL Red Pattern ALL Green Pattern ALL Blue Pattern ALL Black Pattern Black 1 Line Red 1 Line Red1 Line No Appearance Red 1 Line Open Mode a The broken data flexible cable If OK Data IC Broken...

Page 42: ...ine Shortage Mode ALL Red Pattern ALL Green Pattern ALL Blue Pattern ALL Black Pattern Blue 1 Line Red1 Line No Appearance Shortage between Red and Blue a This phenomenon is caused by panel issues Che...

Page 43: ...42 Vertical Line Block 1 2 data IC Block width 30mm a The broken surface IC on data IC b The broken data flexible cable Check Point...

Page 44: ...43 Vertical Line Block 1 data IC Block a Lacking connector between Data Relay board and Data IC b The broken data flexible cable Check Point...

Page 45: ...cal Line Block Many data IC Block 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 Chec...

Page 46: ...oken surface IC on scan IC driver Check the resistance between NEGA and POSI on scan IC board Normal K ohm Level b The broken data flexible cable c Lacking connector between scan IC and scan board Che...

Page 47: ......

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