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DAEWOO ELECTRONICS DPM-42A1GCSB, Service Manual

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DAEWOO ELECTRONICS DPM-42A1GCSB Service Manual Download Page 84

1. Checking for No Picture

A screen doesn’t display at all and condition of black pattern or power off.

(1) Check whether the CTRL B/D LED(D12, D13, D14) is turned on or not.
(2) Check the power and signal cable of CTRL B/D.
(3) X B/D, Y B/D, Z B/D is well plugged in.
(4) Check the connection of X B/D, Y B/D and Z B/D to CTRL B/D. 
(5) Measure the output wave of X, Y, Z B/D with oscilloscope(more than 200MHz) 

and find the trouble of B/D by comparing the output wave with below figure.

- Measure Point fo Y B/D : TP(Waveform on Y DRV B/D)
- Measure Point fo Z B/D : TP(Bead B28)

(6) Check the SCAN(Y side) IC
(7) Check the DATA(X side) TCP IC
(8) Replace the CTRL B/D.

. Trouble Shooting

     

 

 

 

   

 

 

     

 

 

 

   

 

 

 

   

 

 

 

   

   

 

 

 

     

 

 

 

   

 

 

     

 

 

 

 

   

 

 

Summary of Contents for DPM-42A1GCSB

Page 1: ...heir 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 Service Manual 42 PLASMA PDP TV CHASSIS...

Page 2: ...een 31 5 4 Features 13 6 Service Mode 31 7 Power PCB 32 7 1 Input and Environmental Requirement 34 7 2 Output Characteristics 34 7 3 Function of Protection 34 7 4 Connector Specification 35 8 Power Ad...

Page 3: ...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...

Page 4: ...z Y C 1 Port 3 2 DTV DVD INPUT 1080i 720P 480P 480i 576P 576i Y Pb Cb Pr Cr COMPONENT SIGNAL 2 Ports 3 3 SCART INPUT SCART COMPOSITE R G B SOUND R L 2 Ports 3 4 PC INPUT VGA SXGA Dot clock 110MHz 15 P...

Page 5: ...ECT RATIO 16 9 4 3 NUMBER OF PIXELS 1024 H x 768 V 4 4 DISPLAY COLOR 1 073 000 000 Colors 10bits for each RGB 4 5 CELL PITCH 300um H x 676um V Green Cell basis 4 6 PEAK LUMINANCE 1200cd m2 WITHOUT FIL...

Page 6: ...940 DOS O O 640 X 480 37 861 72 809 VESA O O 37 500 75 000 VESA O O 720 X 400 31 469 70 087 IBM O O 800 X 600 35 156 56 250 VESA O O 37 879 60 317 VESA O O 1024 X 768 48 363 60 004 VESA O O 2 Compone...

Page 7: ...Product Specification 7 2 3 Remote Control Setup Code...

Page 8: ...Product Specification 8...

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Page 27: ...Product Specification 27...

Page 28: ...3 The Features of Inside 28...

Page 29: ...29 4 Block Diagram...

Page 30: ...ed 500 Hz 32 38 38 32 Undefined 1 5 kHz 32 28 15 50 Undefined 5 kHz 32 40 42 32 Undefined 10 kHz 32 48 56 15 Undefined Function Default Value Colour Temp Normal N R NR1 CTI On Function Default Value B...

Page 31: ...sition and Auto screen size is available only in PC mode 5 4 Features 1 Mode O DVI PC don t support MGDI function 2 Time Setting 3 ISM Function Background Language Child Lock MGDI Auto Power Default V...

Page 32: ...ain For CONTRAST adjustment All inputs O Bias R For R BRIGHTNESS adjustment All inputs O Bias G For G BRIGHTNESS adjustment All inputs O Bias B For B BRIGHTNESS adjustment All inputs O Gain R For R CO...

Page 33: ...shows five cycled patterns manually by pressing volume up key 6 6 Panel O Panel Temp indicates the current temperature of the panel 6 7 Reset O Level 1 Resets all data in E2 PROM other than HDCP key E...

Page 34: ...C276V Nominal Frequency 50 60 Hz Frequency Variation Range 47Hz to 63Hz Phase Single Inrush Current 50A zero pk max at cold start and any specified line load and temperature conditions Environment Req...

Page 35: ...1A or more 5Vctrl 6 0A or more 5V 4 6A or more Over Current 12V 2 1A or more Shut down by Undr Voltage 3 4V 11 5A or more 33V 0 011 or more 34V 1 7A or more 5Vstby 3 0A or more Vs 210V 225V Over Volta...

Page 36: ...er adjusting you should classify that PDP module as a fault and contact to PDP module maker O Input Video Pattern 100 IRE Full White Pattern 8 1 Vs Sustain Voltage Discharge Sustain Voltage O Measurem...

Page 37: ...ut Voltage O Measurement Equipment Digital Volt Meter DC volt mode O Adjusting TP Va TP O Adjusting Location RV401 O Optimum Adjusting Voltage The voltage which is written in the label located in uppe...

Page 38: ...O Measurement Equipment Digital Volt Meter DC volt mode O Adjusting TP Vcc TP O Adjusting Location RV501 O Optimum Adjusting Voltage The voltage which is written in the label located in upper right si...

Page 39: ...n Coil the Ring Core Filter EMI S N 5PZCA2009A 2 turns with Speaker Cable L R as shown in the figure below Coil the Ring Core Filter EMI S N 5PZCAT3035 1 Turn with AV3 Cable as shown in the figure bel...

Page 40: ...able Connection CABLE LVDS S N 4856818800 DIGITAL B D part CLAMP WIRE S N 4856818800 CLAMP WIRE S N 4856815900 Place these CLAMP WIRES as shown in the figure below Make LVDS Cable not to touch on the...

Page 41: ...hieldron Tape on SCART Input Tape EMI S N 485A100071 Position From top of Scart to Terminal Channel Gasket 9 5 Shieldron Tape on DVI Input Tape EMI S N 485A100571 attach vertically 3 X 4 2 Cm Position...

Page 42: ...to the serial port of the computer 10 3 Connect the opposite end of the serial cable to RS 232C port of SUB PCB 10 4 Run Flashupgrader exe in the PC to excute the program as shown below 10 5 Select cu...

Page 43: ...GRADE Method 43 10 6 Select correct COM Port and Baud Rate 115200 as shown below Then press Flash button to finish setup 10 7 Turn on the ac power and then upgrade program will start the download as s...

Page 44: ...SOFTWARE UPGRADE Method 44 10 8 When the upgrading is complete a window below will be opened Press Finish button to complete the process...

Page 45: ...test 2 Screwdriver or electric screwdriver Plastic adjusting tool 3 Oscilloscope for detailed examination only O Before replacing PCBs you MUST turn the AC switch OFF O After replacing High Voltage B...

Page 46: ...utes after AC power is off To be more careful using a Multimeter you should check to see if Vs is less than 10V and then connect connectors Definition O Red LED Stand by state ready for operating O Gr...

Page 47: ...Trouble Shooting 47 11 1 No Signal or No Raster...

Page 48: ...Trouble Shooting 48 11 2 No Sound...

Page 49: ...Trouble Shooting 49 11 3 Shut Down...

Page 50: ...Trouble Shooting 50 A Low Voltage Shut Down...

Page 51: ...Trouble Shooting 51 B Z SUS Digital B D Data B D Shut Down...

Page 52: ...Trouble Shooting 52 C Y SUS Scan B D Shut Down...

Page 53: ...Trouble Shooting 53 D High Voltage Shut Down...

Page 54: ...Trouble Shooting 54 11 4 No Key Operation...

Page 55: ...Trouble Shooting 55 11 5 No Remote Control Operation...

Page 56: ...Trouble Shooting 56 11 6 No Key and Remote Control Operation...

Page 57: ...Trouble Shooting 57 11 7 Abnormal Discharge...

Page 58: ...Trouble Shooting 58 11 8 Not Even Weak Discharge 11 9 Particular Input Signal Video PC TV or Component Does Not Work...

Page 59: ...lly the set does not operate normally Turning off and on the AC power make the set to operate normal again Upgrade the software first If you still see the same symptom replace the Main and Sub B D C I...

Page 60: ...025 07R 171822 7 ULW 300 13 4850703N40 CONNECTOR 25045HP 03 25048HS 03 ULW 150 14 4850709S18 CONNECTOR YH396 09V YH396 10V YH396 04 ULW 160 15 4850708S24 CONNECTOR YH396 08V YH396 08 ULW 850 16 485070...

Page 61: ...52 T1 0 40 4853635200 TERMINAL PLATE A5052 T1 0 41 48B5353J17 TRANSMITTER REMOCON R 53J17 AAA 42 485AS11790 CTRL BOARD AS 6871QCH077D 43 485AS11890 Y DRV BOARD AS 6871QDH117A 44 485AS11990 XL BOARD AS...

Page 62: ...13 STRUCTURE OF PDP SET 62...

Page 63: ...63 STRUCTURE OF PDP SET COMPONENT PICTURE REMARK 1 PDP MODULE With F SUPPORT 1a Y SUS B D 1b Z SUS B D 1c X LEFT B D ASSY...

Page 64: ...STRUCTURE OF PDP SET 64 COMPONENT PICTURE REMARK 1d X RIGHT B D ASSY 1e Y DRV B D ASSY 1f CTRL B D ASSY 2 MAIN BOARD...

Page 65: ...STRUCTURE OF PDP SET 65 COMPONENT PICTURE REMARK 3 SUB BOARD 4 POWER BOARD 5 FRONT MASK 6 FILTER GLASS...

Page 66: ...66 STRUCTURE OF PDP SET COMPONENT PICTURE REMARK 7 BACK COVER...

Page 67: ...14 EXPLODED VIEW 67...

Page 68: ...DAEWOO ELECTRONICS CORP 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA PRINTED DATE Dec 2006...

Page 69: ...FORE SERVICING THE PDP MODULE READ THE SAFETY PRECAUTIONS IN THIS MANUAL 2 WHEN REPLACEMENT PARTS ARE REQUIRED BE SURE TO USE REPLACEMENT PARTS SPECIFIED BY THE MANUFACTURER MODEL PDP42X3 English Nove...

Page 70: ...egular internal on the whole screen 2 7 Data copy is generated to stripe direction 2 8 The screen has one several vertical line 2 9 The screen has one or several horizontal line 2 10 Lightness of scre...

Page 71: ...r if the connector is loose do not use the product otherwise this can lead to fire or electric shock 10 If the power connector or the connector of the power cable becomes dirty or dusty wipe it with a...

Page 72: ...ted values of the electrical specifications are guaranteed within these conditions Always use the product within the range of the recommended operating conditions Otherwise the reliability of the prod...

Page 73: ...tion sentence Warning against high voltage under certain position 6 Fuse Caution sentence The fuse should be replaced with the same type and rating to prevent fire under certain circumstance 2 Safety...

Page 74: ...el Name PDP42X3 2 Number of Pixel 1024 H 768 V 1pixel 3 RGB cells 3 Pixel Pitch 900 m H 676 m V 4 Cell Pitch 300 m H 676 m V Base Green Cell 5 Display area 921 6 H 519 2 V 0 5 mm 6 Outline dimension 1...

Page 75: ...D P4 CTRL B D Input Voltage Signal 5V Va Vs 5V Va 5V Va Vs 5V Video Signal No Part No 6871QCH077A 6871QDH117A 6871QYH053A 6871QZH056A 6871QLH059A 6871QRH068A PWB PCB ASS Y PWB PCB ASS Y PWB PCB ASS Y...

Page 76: ...2005N 6631Q15003F Part No 1EA 1EA 1EA 2EA EA Note Y B D CTRL B D P 0 5MM 50PIN L180MM AU PLATING X B D CTRL B D P 0 5MM 60PIN L60MM AU 1 25MM PITCH 12PIN L360MM UL1061 28AWG YEON HO 1 5MM PITCH 7PIN L...

Page 77: ...English 2 Information of Boards 1 42X3 PDP Module 2 CTRL B D 3 Y SUS B D...

Page 78: ...4 Z SUS B D 5 Y DRV B D 6 XL XR B D XL XR...

Page 79: ...English 3 Label Information of Module 1 Identification Label...

Page 80: ...7 cm 2 5 cm 2 Warning Caution Label High Voltage Hot Surface Mechanical Hazard 3 Safety Approval Label 4 Serial No of Frame 5 Voltage Label Model Name Operational Voltage...

Page 81: ...Digital pattern or Cross Hatch Pattern which has clear gradation after image can be presented in the black level part of screen 3 Adjustment after Assembling 3 1 Using Tools Conditions of aging are as...

Page 82: ...so that waveform A of Fig 2 be 10 5 3 How to adjust Z SUS Adjustment should be done after setting Vs Va to the set voltage 1 Vzb Z bias voltage adjustment For the Vzb voltage measure and adjust the vo...

Page 83: ...turning on the power of DC power supply 2 The voltage of DC power supply in standard of Module input voltage should be preset as below Vs dc 180V Va dc 60V 5V dc 5V 3 The power of power supply must t...

Page 84: ...Y B D Z B D is well plugged in 4 Check the connection of X B D Y B D and Z B D to CTRL B D 5 Measure the output wave of X Y Z B D with oscilloscope more than 200MHz and find the trouble of B D by com...

Page 85: ...no defects connect the corresponding TCP again 3 If the corresponding Data TCP fails Module should be replaced Screen display form Anything of the 16 Data TCP can be shown beside below pictures 2 4 I...

Page 86: ...Regular stripe is generated at regular internal on the whole screen A vertical stripe flash at especial color 1 This is a problem about CTRL B D 2 Replace the CTRL B D Screen Display Form 2 7 Data co...

Page 87: ...The screen displays other color partially on full white screen or happens Mis discharge partially on full black screen 1 Check the declination of Y B D set up set down wave 2 Measure each output wave...

Page 88: ...3 2 FET Ass y Y B D HS2 Damage 1 When Set_Up FET 2nd FFT of HS2 is damaged screen doesn t be shown O Test Point Enlarge after measuring GND Waveform Y DRV B D O Wave format As shown fig 2 2 When Set_D...

Page 89: ...st Point Enlarge after measuring GND Output ICT on Y DRV B D O Wave format As shown fig 5 3 4 TCP Damage 1 In case of shorting or opening the IC output of TCP it may show one or several vertical lines...

Page 90: ...oesn t come out 3 5 Crystal CTRL B D X1 Damage 1 When Crystal is damage the screen doesn t be shown O Test Point Enlarge after Measuring 3pin of GND Crystal CTRL B D X1 O Wave format Output wave doesn...

Page 91: ...ical components list of PDP42X3 Model is as below 2 A component of mark is important to keep product s security Therefore in exchanging a component appointed component is necessary used 3 is an abbrev...

Page 92: ......

Page 93: ...7 2005 09 28 2005 09 28 2005 09 28 Part Number 6871QCH077A 6871QDH117A 6871QYH053A 6871QZH056A 6871QLH059A 6871QRH068A Note Initial Product Initial Product Initial Product Initial Product Initial Prod...

Page 94: ...023G 6001QV0007A 6212AB4610A 0ILNR00150A 0ILMRFE001C 6630X60132A Note Initial Product Initial Product Initial Product Initial Product Initial Product Initial Product Initial Product Initial Product In...

Page 95: ...English 3 ROM DATA No 1 Date 2005 05 01 Contents External Type LVDS Initial ROM Data ROM Data Version 50X3ST01B...

Page 96: ...FORE SERVICING THE PDP MODULE READ THE SAFETY PRECAUTIONS IN THIS MANUAL 2 WHEN REPLACEMENT PARTS ARE REQUIRED BE SURE TO USE REPLACEMENT PARTS SPECIFIED BY THE MANUFACTURER MODEL PDP42X3 English Nove...

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