PDP MODULE SERVICE MANUAL
Contents
1. 22 3 ROM DATA No Date ROM Data Version Contents 1 2004 02 18 42V62MS01 Initial ROM Data for DND 2 2004 02 18 42V62JNO1 Initial ROM Data for HTC 23 SPARE PART LIST V6 LG Parts Code Description X56101 PCB ASSY LVDS LV42V6 6871QCH034A X56103 PCB ASSY Y DRIVE UP LG42V6 6871QDH066A X56104 PCB ASSY Y DRIVE UST LG42V6 6871QDH067A X56105 PCB ASSY X DRIVE LEFT LG42V6 6871QLH034A X56106 PCB ASSY X DRIVE LEFT LG42V6 6871QRH037A X56107 PCB ASSY YSUS LG42V6 6871 QYH029A X56108 PCB ASSY XSUS LG42V6 6871 QZH033A X56109 PCB ASSY SMPS PSU LG42V6 6709Q00150A2. 15 If inserting high power resistor metal oxide film resistor or metal film resistor in order to repair insert it as 10mm away as from a board 16 During repairs high voltage or high temperature components must be put away from a lead line 17 This is a Cold Chassis but you had better use a cold transformer for safety during repairs If repairing electricity source part you must use the cold transformer 18 Do not place an object on the glass surface of the display The glass may break or be scratched 19 This product may be damaged if it is subject to excessive stresses such as excessive voltage current or temperature The absolute maximum ratings specify the limits of these stresses 20 The recommended operating conditions are conditions in which the normal operation of this product is guaranteed All the rated 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 product may be degraded 21 This product has a glass display surface Design your system so that excessive shock and load are not applied to the glass Exercise care that the vent at the corner of the glass panel is not damaged If the glass panel or vent is damaged the product is inoperable 22 Do not cover or wrap the product with a cloth or other covering while power is supplied to the product 2
3. Adjust the Y B D set up Test up B C s s setdown Test down D xs and Z B D ramp Tramp F G xs xs declination by changing VR1 VR2 VR3 Measuring Point of Y B D B103 SUS UP Measuring Point of Z B D B37 SUS OUT Y Output Voltage Wave form Z RAMP Voltage Wave form 15 2 12 A center of screen is darker than a edge of screen at full white pattern 1 In this case it s a problem about Z B D ramp wave 2 Check the connection cable of Z B D and CTRL B D 3 Replace the Z B D x Screen Display Form 2 13 It doesn t display a specified brightness at specified color 1 Check the connector of CTRL B D input signal 2 Replace the CTRL B D 16 3 Checking for component damage 3 1 Y IPM IC 12 or Z IPM IC 4 damage 1 When the internal Sustain_FET of Y IPM IC 12 or Z IPM IC 4 is damaged screen doesn t be shown or electric discharge is generated e Test Point GND B103 Y B D GND B37 Z B D e Wave format B103 Y B D or B37 Z B D has no wave output 2 When the internal ER_FET of Y IPM IC 12 or Z IPM IC 4 is damaged Y IPM or Z IPM emission is increased e Test Point GND B103 Y B D GND B37 Z B D e Wave format As shown Fig 1 Normal waye Crushed pulse occurrenee Fig 1 When the ER FET is damaged IPM Normal Output Wave e Measurance position Sustain section enlarge the after measuring B103 wave of Y B D and B37 wave of Z B D Full White P
4. e Test Point Enlarge the after measuring output TP of GND COF e Wave format Output wave doesn t come out COF Normal Output Wave gt e Measurance position Enlarge the after measuring output TP of COF Full White Pattern 3 5 Crystal CTRL B D X1 damage 1 When Crystal is damage the screen doesn t be shown e Test Point Measuring 3pin of GND Crystal Ctrl B D X1 e Wave format Output wave doesn t come out 2 In case of unusual launch of the Crystal it may blink the screen e Wave format As shown Fig 8 It s may change the frequency suddenly Fig 8 When Crystal is poor pkpk 4 Crystal Normal Output Wave gt e Measurance position Measuring output 3pin of Crystal X1 100MHz on Ctrl B D Full White Pattern 19 y Block Diagram Input Signal Full White Current typ rms 5 86 Ap p 0 53 Ap p 1 68 Ap p 20 1 5 0 1 1 0 voltage e DC Power Supply for 5V voltage 6 DC Power Supply for Va voltage 6 DC Power Supply for Vs Y Records of Revision for Boards components and ROM DATA 1 Boards No Date Board Part Number Note 1 2004 01 21 CTRL B D ASSY LVDS 6871QCH034A Initial Product 2 2004 01 21 YDRV Upper B D ASSY 6871QDH066A Initial Product 3 2004 01 21 YDRV Lower B D ASSY 6871QDH067A I
5. a Repeat the adjustment 2 item and name each voltage as Vsmin4 Vsmax4 and record them Convert the signal of signal generator to 100 Full Black signal a Repeat the adjustment 2 item and name each voltage as Vsmin5 Vsmax5 and record them a At this time decided Vs voltage adds 6V to Max value Vsmin1 Vsmin5 and set up the voltage within the set up range 180V Vs lt 190V in consideration of other features a Turn the voltage adjusting knob of Vs DC power supply make deciding the Vs voltage x1 Adjust Vset down wave form using setting up Vs voltage like mentioned on the 4 3 4 Adjusting the final voltage wave form Check the voltage wave form like the mentioned way on the 4 3 How to adjust and readjust the wave form when it is twisted 5 DC DC Pack Voltage Set up Range Vsetup 185V 225V Vsc 90V 120V Vy 60V 80V voltage e DC Power Supply for 5V voltage 6 DC Power Supply for Va Power voltage 6 E i DC Power Supply for Vs Signal Generator VG 825 lt Caution gt 1 The power of the signal generator should be turned on before 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 Vcc SV Va 65V Vs 185V 3 The power of power supply must turned on by this sequence Reverse direction When turning off Module on 5V Va Vs Module off V
6. E X Tube External Cable Connection NO Connector Input Voltage amp Signal 1 P1 Z SUS B D 5V Va Vs 2 P5 Y SUS B D Vs 3 P6 Y SUS B D 5V 4 P31 CTRL B D Video Signal NO Part No Description 6871QCH034A PWB PCB ASSY LVDS CTRL B D ASSY 23 6871QDH066A PWB PCB ASSY Y DRV UPPER B D ASSY 3 6871QDH067A PWB PCB ASSY Y DRV LOWER B D ASSY 4 6871QRH037A PWB PCB ASSY X RIGHT B D ASSY 5 6871QLH034A PWB PCB ASSY X LEFT B D ASSY 6 6871QYHO29A PWB PCB ASSY Y SUS B D ASSY D 6871QZH033A PWB PCB ASSY Z SUS B D ASSY Adjustment 1 Application Object This standard is applied to the PDP42V6 PDP Module which is manufactured by the manufacturing team of PDP promotion department or elsewhere 2 Notes 1 Without any special specification the Module should be at the condition of preliminaries more than 10minutes before adjusting Service signal 100 Full White signal Service DC voltage Vcc 5V Va 65V Vs 185V DC DC Pack voltage Vsetup 200V Vscw 115V Vy 75V Preliminaries environment Temp 25 5 C Relative humidity 65 10 2 Module should get the Aging for the equilibrium after finish the assembling Aging condition is shown below Service signal 100 Full White Red Green Blue pattern signal Service time of each pattern within 5minutes cycle Service DC voltage Match the voltage with the set up voltage in the
7. has voltage equivalent output of PDP42V6 Module after taking the Vs Va 5V voltage Voltage stability of power supply Within 1 for Vs Va within 3 for 5V 5 2 Connection diagram of measuring instrument and setting up the initial voltage 1 Connection diagram of measuring instrument Refer to figure 1 Connection diagram of measuring instrument that adjusting the voltage wave form 2 Setting up the initial voltage Initially setting up voltage Vcc 5V Va 65V Vs 185V But Initially setting up voltage can be changed by the set up range according to the Module s characteristic 5 3 How to Adjust 1 Adjusting initial voltage wave form Check the voltage wave form like the mentioned way on the 4 3 How to adjust and readjust the wave form when it is wrong 2 Checking the DC DC pack voltage a Convert the signal of signal generator to the 100 Full White signal xz Connect the GND terminal of DVM to the R30 s right leg of the Y B D and set the Plus terminal to the left leg of R30 to check the Vscw voltage 115 1V and when there is abnormality in voltage turn the variable resistor VR5 of DC DC Pack Vscw on Y B D to adjust 2g Connect the GND terminal of DVM to the R31 s right leg of the Y B D and set the Plus terminal to the left leg of R31 to check the Vy voltage 75 1V and when there is abnormality in voltage turn the variable resistor VR6 of DC DC Pack Vy on Y B D to adjust x Connect the GND ter
8. 3 Before turning on power to the product check the wiring of the product and confirm that the supply voltage is within the rated voltage range If the wiring is wrong or if a voltage outside the rated range is applied the product may malfunction or be damaged 24 Do not store this product in a location where temperature and humidity are high This may cause the product to malfunction Because this product uses a discharge phenomenon it may take time to light operation may be delayed when the product is used after it has been stored for a long time In this case it is recommended to light all cells for about 2 hours aging 25 This product is made from various materials such as glass metal and plastic When discarding it be sure to contact a professional waste disposal operator 26 If faults occur due to arbitrary modification or disassembly LG Electronics is not responsible for function quality or other items 27 Use of the product with a combination of parameters conditions or logic not specified in the specifications of this product is not guaranteed If intending to use the product in such a way be sure to consult LGE in advance 28 Within the warranty period general faults that occur due to defects in components such as ICs will be rectified by LGE without charge However IMAGE STICKING due to misapplying the above 12 provision is not included in the warranty Repairs due to the other faults may be charged
9. PDP MODULE SERVICE MANUAL MODEL PDP42V6 CAUTION 1 BEFORE 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 SAFETY PRECAUTIONS PDP Module is a display device to be divided into a Panel part and a Drive part The Panel part consists of Electrodes Phosphor various dielectrics and gas and the Drive part includes electronic circuitry and PCB When using handling this PDP Module pay attention to the below warning and cautions A Warning Indicates a hazard that may lead to death or injury if the warning is ignored and the product is handled incorrectly Caution Indicates a hazard that can lead to injury or damage to property if the caution is ignored and the product is handled incorrectly Y WARNING 1 Do not supply a voltage higher than that specified to this product This may damage the product and may cause a fire 2 Do not use this product in locations where the humidity is extremely high where it may be splashed with water or where flammable materials surround it Do not install or use the product in a location that does no satisfy the specified environmental conditions This may damage the product and may cause a fire 3 If a foreign substance such as water metal or liquid gets inside the product immediately turn off the power Continuing to use the product it is ma
10. and deciding the voltage 3 Adjusting and checking the voltage of DC DC pack Vsetup Vscw Vy 4 Adjusting the voltage wave form of Vset down 5 Measuring the Margin of Vset up voltage and deciding the voltage 6 Adjusting the wave form of final voltage 4 Adjusting the Board Group Applying the Jig Set 4 1 Using Tools 1 Digital oscilloscope More than 200MHz 2 DVM Digital Multimeter Fluke 87 or similar one 3 Signal generator VG 825 or similar one 4 DC power supply DC power supply for Vs 1 Should be changeable more than 0 200V more than 10A DC power supply for Va 1 Should be changeable more than 0 100V more than 5A DC power supply for 5V 1 Should be changeable more than 0 10V more than 10A DC DC Converter Jig 1 The Jig which has voltage equivalent output of PDP42V6 Module after taking the Vs Va 5V voltage Voltage stability of power supply Within 1 for Vs Va within 3 for 5V 4 2 Connection diagram of measuring instrument and setting up the initial voltage 1 Connection diagram of measuring instrument Refer to Fig 1 Connection diagram of measuring instrument that adjusting the voltage wave form 2 Setting up the initial voltage Initially setting up voltage Vcc 5V Va 65V Vs 185V But Initially setting up voltage can be changed by the set up range according to the Module s characteristic 4 3 How to Adjust 1 Adjusting the Voltage Wave form of Vset
11. art of Data COF quantity or a part 1 The problem between Data COF and X B D is more possible that the screen is not be shown as data COF 2 Confirm the connector of Data COF is well connected to X B D Correspond to the part that screen is not showing 3 Confirm whether the Data COF is failed and replace X B D 1 Confirm the power connector of X B D is well plugged in which is correspond to not showing screen 2 Confirm the connector that is connected between CTRL B D and X B D correspond to not showing part 3 Replace relevant X B D x Example of the screen display form Anything of the 7 Data COF can be shown beside below Screen X B D pictures Left of the Screen 4 7 lt gt Right X B D Right of the Screen 3 7 lt gt Left XB D x Relationship between screen and X B D x Screen Display Form 7 All j ZA Partial Z B not at all x How to examine Data COF IC Left of the Screen 4 7 Right of the Screen 3 7 Display HE 00 s eZ Resistance SEES 4 jm y GND e e Change 1 GND into ANODE 2 Resistance into CATHOD and then examine the Diode to the forward or reverse direction e Measure the resistance value 10Q 12 2 3 It Generates Unusual Pattern of Data COF IC unit 1 In case of generating unusual pattern of Data COF IC unit as below picture
12. attern 3 2 FET Ass y Y B D HS1 damage 1 When Set_Up FET is damaged screen doesn t be shown e Test Point Enlarge the after measuring GND B103 Y B D e Wave format As shown Fig 2 EHH l PG Set Up waveform does not come out a n Fig 2 When the Set Up FET is damaged 2 When Set Down FET is damaged electric discharge of entire screen is generated e Test Point Enlarge the after measuring GND B103 Y B D e Wave format As shown Fig 3 Set Down waveform does not come out Fig 3 When the Set Down FET is damaged i 1 Setdn lt FET Ass y Normal Output Wave gt e Measurance position Reset section enlargement wave of TP B103 Y B D Full White Pattern 17 3 3 SCAN IC Y drv B D IC1 8 damage 4 In case of shorting the SCAN IC output by a dust foreign substance it may overlap two horizontal lines on screen e Test Point ICT measurance of GND Y drive B D output 1 In case of SCAN IC poor one horizontal line may open at e Wave format As shown Fig 6 screen e Test Point ICT measurance of GND Y drive B D output e Wave format As shown Fig 4 Widen the Pulse width siera Decrease in voltage of SCAN Pulse f I f l Break the SCAN Pulse SCAN Pulse does not come out When the internal output FET of IC is damaged Fig 6 When SCAN IC output is short Fig 4 When SCAN IC is poor 2 Screen may not shown when SCAN IC is
13. clined surface The product may fall off or fall over causing injuries 2 Before disconnecting cable from the product be sure to turn off the power Be sure to hold the connector when disconnecting cables Pulling a cable with excessive force may cause the core of the cable to be exposed or break the cable and this can lead to fire or electric shock 3 This product should be moved by two or more persons If one person attempts to carry this product alone he she may be injured 4 This product contains glass The glass may break causing injuries if shock vibration heat or distortion is applied to the product 5 The temperature of the glass of the display may rise to 80 C or more depending on the conditions of use If you touch the glass inadvertently you may be burned 6 If glass surface of the display breaks or is scratched do not touch the broken pieces or the scratches with bare hands You may be injured 7 PDP Module requires to be handled with care not to be touched with metal or hard materials and must not be stressed by heat or mechanical impact 8 There are some exposed components on the rear panel of this product Touching these components may cause an electric shock 9 When moving the product be sure to turn off the power and disconnect all the cables While moving the product watch your step The product may be dropped or all leading to injuries of electric shock 10 In order to protect
14. damaged by SCAN IC poor external electricity or spark e Test Point ICT measurance of GND Y drive B D output e Wave format Output wave format isn t output You can see the damage for Y drive B D Top or Bottom s SCAN IC 3 Screen shaked horizontally when Y drv B D Top and Bottom cable is poor e Test Point ICT measurance of GND Y drive B D output e Wave format As shown Fig 5 SCAN PULSE Normal SCAN Pulse Noise occurance at SCAN section H1 Fig 5 When Y drv B D Top and Bottom cable is poor SCAN IC Normal Output Wave gt e Measurance position SCAN section enlarge the after measuring output ICT of Y drive B D Full White Pattern 18 3 4 COF damage 1 In case of shorting or opening the IC output of COF it may show one or several vertical lines e Test Point Enlarge the after measuring output TP of GND COF e Wave format As shown Output of Fig 7 In case of normal wave output when STB signal is generated maintain High output And when STB signal is generated again must be fall Low But when IC of COF is poor STB signal is not generated Output falls with Low 7 I py mmm dad check I ped June gt Ce AA L I I Its out of order In case of normal output output it may show as a dotted line Fig 7 When IC output of COF is poor 2 In case of being damage IC of COF or power resistance the screen doesn t be shown or happens discharge partially
15. en 4 7 lt gt Right X B D Right of the Screen 3 7 lt gt Left XB D x Screen Display Form It comes out partial field about Dm the quantity of one IC or more or It may come out together at other field of screen 13 2 5 The screen display has a problem for Scan FPC 1 It s may be a problem between Scan FPC and Y B D 2 Check the connection of Y B D and Scan FPC 3 If the Scan IC is failed replace the Y DRV B D x Screen Display Form one eighth screen e e e The screen display is very good EE The screen display is poor x Check a method of SCAN IC WDR Ad TRIN ito Change the Vpp Pin into ANODE and GND Pin into CATHOD and then test the Diode with forward or reverse direction 2 6 The screen has a vertical line with regular gap A vertical stripe flash at especial color 1 This is a problem about control B D 2 Replace Control B D x Screen Display Form The screen has a vertical line with regular gap 2 7 A data copy is happened into vertical direction 1 In this case it s due to incorrect marking of scan wave 2 Replace a Y DRV B D or Y SUS B D x Screen Display Form lt Display Pattern gt Case 1 Entire Copy Case 2 Top Copy Case 3 Bottom Copy Case 4 Entire Copy 14 2 8 The sc
16. first adjustment Aging time More than 4Hrs Aging environment Temp 60 2 Relative humidity Less than 75 3 Module adjustment should be followed by below sequence Setting up the initial voltage and adjusting the voltage wave form of Vsetup Measuring the Margin of Vs voltage and deciding the voltage Adjusting and checking the voltage of DC DC pack Vsetup Vscw Vy Adjusting the voltage wave form of Vset down Measuring the Margin of Vset up voltage and deciding the voltage Adjusting the wave form of final voltage But these items above can be changed by the consideration of mass production When changing the sequence there should be an agreement of the Module development 2Gr QA Gr Manufacturing Gr 4 Without any special specification you should adjust the Module in the environment of Temp 25 5 C and Relative humidity 651096 Caution If you let the still image more than 10 minutes especially The Digital pattern or Cross Hatch Pattern which has clear gradation after image can be presented in the black level part of screen 3 Adjustment items 3 1 Adjusting the Board Group 1 Adjusting the voltage wave form of Vset up 2 Adjusting the voltage wave form of Vset down 3 Adjusting the voltage wave form of Vramp 3 2 Adjustment after assembling PDP Module adjustment 1 Setting up the initial voltage and adjusting the voltage wave form of Vsetup 2 Measuring the voltage Margin of Vs
17. for depending on responsibility for the faults PDP42V6 Module CONTENTS Y Formation and Specification of Module Y Adjustment Yt Trouble Shooting 1 Checking for No Picture 2 Hitch Diagnosis Following Display Condition 2 1 4 7 or 3 7 of the screen doesn t be shown 2 2 Screen doesn t be shown as Data COF 2 3 It is generated unusual pattern of Data COF IC unit 2 4 Regular Stripe is generated about the quantity of one Data COF IC or more 2 5 Screen doesn t be shown at all as scan COF 2 6 Regular stripe is generated at regular internal on the whole screen 2 7 Data copy is generated to stripe direction 2 8 One or more stripe is generated on the screen 2 9 One or more horizontal line is generated on screen 2 10 Lightness of screen is wholly darken though there is input signal pattern 2 11 Different color is shown partially during full white screen or electric discharge is generated during full black screen 2 12 Full white pattern it happened that the lightness of middle is darken while full white pattern 2 13 Some lightness of some color doesn t not generated well 3 Checking for component damage 3 1 Y IPM IC 12 or Z IPM IC 4 damage 3 2 FET Ass y Y B D HS1 damage 3 3 SCAN IC Y drv B D IC1 8 damage 3 4 COF damage 3 5 Crystal CTRL B D X1 damage xti Block Diagram Records of Revision for Boards components and ROM DATA Annexing Schematic Diagram Formation and Specification of Module
18. minal of DVM to the R27 s right leg of the Y B D and set the Plus terminal to the left leg of R27 to check the Vsetup voltage 200 1V and when there is abnormality in voltage turn the variable resistor VR4 of DC DC Pack Vsetup on Y B D to adjust 3 Measuring the Vs voltage Margin and deciding the voltage a Convert the signal of signal generator to the 100 Full Red signal az Turn the voltage adjusting knob of Vs DC power supply to the voltage down direction and make the cell of screen turned off ag Turn the voltage adjusting knob of Vs DC power supply to the voltage up direction until the cell of screen turned on The first voltage which make the cell of full screen turned on is named as Vsmin1 and record it a Turn the voltage adjusting knob of Vs DC power supply to the voltage up direction slowly until the cell of screen turned off or over electric discharge The first voltage which makes the cell of screen turned off or over electric discharge is named as Vsmax1 and records it Only Vs voltage variable passes over the maximum 190V 2 Convert the signal of signal generator to the 100 Full Green signal a Repeat the adjustment 2 item and name each voltage as Vsmin2 Vsmax2 and record them a Convert the signal of signal generator to 100 Full Blue signal a Repeat the adjustment 2 item and name each voltage as Vsmin3 Vsmax3 and record them a Convert the signal of signal generator to 100 Full White signal
19. nitial Product 4 2004 01 21 Y SUS B D ASSY 6871QYH029A Initial Product 5 2004 01 21 Z SUS B D ASSY 6871QZH033A Initial Product 6 2004 01 21 X RIGHT B D ASSY 6871QRH037A Initial Product 7 2004 01 21 X LEFT B D ASSY 6871QLH034A Initial Product 8 2004 02 23 CTRL B D ASSY LVDS 6871QCH034A COF Resistor added 9 2004 02 23 Y SUS B D ASSY 6871QYH029A R90 R91 C33 P5 P6 changed 10 2004 02 23 Z SUS B D ASSY 6871QZH033A C7 added 11 2004 02 23 X RIGHT B D ASSY 6871QRH037A 4 layers changed 12 2004 02 23 X LEFT B D ASSY 6871QLH034A 4 layers changed 21 2 COMPONENTS No Date COMPONENT Part Number Remark Initial Product 1 2004 01 21 Y IPM Y B D IC 12 4921QP1023A Apply to DRIVER IC IR2113S 2004 01 21 Initial Product 2 Z IPM Z B D IC 4 4921QP1024A Apply to DRIVER IC IR2113S 2004 01 21 Initial Product 3 FET Y B D HS1 4921QF2004A Set_up Set dn FET Ass y 2004 01 21 Initial Product 4 COF OILNRAZO15D Check the inner resistance in 0 Ohm 5 2004 01 21 Crystal CTRL B D X1 6212AB4004A Initial Product 2004 01 21 Initial Product 6 SCAN IC Y drive B D IC1 8 OILNRMA011A Matsushida AN16001A 7 2004 03 01 COF OILNRHSO001A Check the inner resistance in 10 Ohm 8 2004 04 05 SCAN IC Y drive B D IC1 8 OILNRTIO20A Tl SN755866 9 2004 04 05 Y IPM Y B D IC 12 4921QP1025A Apply to DRIVER IC IXYS 10 2004 04 05 Z IPM Z B D IC 4 4921QP1026A Apply to DRIVER IC IXYS
20. reen has one or several vertical line 1 In this case It isn t a problem about controller B D or X B D 2 It may cause followings It s out of order a panel Open or short of DATA COF FPC attached panel It s out of order a DATA COF attached panel 3 Replace Module x Screen Display Form It may show several vertical lines in a quarter or other division part of screen including left case 2 9 The screen has one or several horizontal line 1 In this case it isn t a problem about controller B D or X B D 2 It may cause followings It s out of order a panel Open or short of SCAN FPC attached panel It s out of order a SCAN IC attached panel 3 Replace Y DRV B D x Screen Display Form om 0 It may show several horizontal lines including left case 2 10 The screen displays input signal pattern but the brightness is dark In this case Z B D operation isn t complete Check the power cord of Z B D Check the connector of Z B D and Controller B D Replace the Controller B D or Z B D 1 2 3 4 2 11 The screen displays other color partially on full white screen or happens discharge partially on full black screen 1 Check the declination of Y B D set up set down wave 2 Check the declination of Z B D ramp wave 3 Measure each output wave with oscilloscope more than 200MHz and compare the data with below figure data
21. s Va 5V 4 Signal generator should be selected with 852 480 WVGA mode Fig 1 Connection diagram of measuring instrument Y t Trouble Shooting 1 Checking for no Picture A screen doesn trdisplay at all and condition of black pattern or power off 1 Check whether the CTRL B D LED D10 D11 D12 D13 D17 is turned on or not 2 Check the power and signal cable of CTRL B D 8 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 and find the trouble of B D by comparing the output wave with below figure Measure Point fo Y B D TP Bead B103 Measure Point fo Z B D TP Bead B37 Measure Point fo X B D COF TP 6 Check the SCAN Y side IC 7 Check the DATA X side COF IC 8 Replace the CTRL B D 16 7ms 1Frame mM mb m m m 4 a 2 A Y B D Output wave 1 FRAME j B Y B D Output wave 1 SF 10 lt A Y B D Output wave 1Frame gt lt B Y B D Output wave 2 12 SF gt lt A Z B D Output wave 1Frame gt lt B Z B D Output wave 1SF gt lt X B D Output wave 1 FRAME gt lt X B D Output wave 1 SF gt lt X B D Output wave Enlargement gt ir ud Hsu KARA D smeti 11 2 Hitch Diagnosis Following Display Condition 2 2 The screen doesn t be shown as Data 2 1 4 7 or 3 7 of the screen doesn t be COF shown Include not be shown p
22. static electricity due to C MOS circuitry of the Drive part wear a wrist band to protect static electricity when handling 11 If cleaning the Panel wipe it with a soft cloth moistened with water or a neutral detergent and squeezed being careful not to touch the connector part of the Panel And don t use chemical materials like thinner or benzene 12 If this product is used as a display board to display a static image image sticking occurs This means that the luminance of areas of the display that remain lit for a long time drops compared with luminance of areas that are lit for a shorter time causing uneven luminance across the display The degree to which this occurs is in proportion to the luminance at which the display is used To prevent this phenomenon therefore avoid static images as much as possible and design your system so that it is used at a low luminance by reducing signal level difference between bright area and less bright area through signal processing 13 Because PDP Module emits heat from the Glass Panel part and the Drive circuitry the environmental temperature must not be over 40 C The temperature of the Glass Panel part is especially high owing to heat from internal Drive circuitry And because the PDP Module is driven by high voltage it must avoid conductive materials 14 If inserting components or circuit board in order to repair be sure to fix a lead line to the connector before soldering
23. there is problem in the check that is input into Data COF IC 2 In case of lt case 1 2 3 gt confirm the connection of Data COF connector replace the relevant X B D 3 In case of lt case 4 5 gt confirm the connector that is connected from CTRL to X B D Replace relevant XB D or CTRL B D x Screen Display Form Unusual screen comes out about one IC quantity in one COF lt Case 1 gt Unusual screen comes out across one quantity about two IC quantities in one COF lt Case 2 gt Unusual screen comes ou about 4IC quantities in one COF Case 3 Unusual screen comes ou as a unit of Data COF IC through one X B D Case 4 Unusual screen comes ou as a unit of Data COF IC through Top or Bottom Ly t Y Y Case 5 Screen 2 4 Regular Stripe is Generated about the Quantity of one Data COF IC or more 1 In case of generating regular stripe about the quantity of one Data COF IC there is problem at the output of output flatworm of X B D In case of generating regular stripe about the quantity of two Data COF IC that means the data which is conveyed from CTRL B D doesn t conveyed well 2 Confirm the XB D connection connector plugged in well Correspond to unusual screen 8 Replace relevant XB D or CTRL B D x Relationship between screen and X B D Screen X B D Left of the Scre
24. up a Connect measuring instrument like the connection diagram Fig 1 az Turn on the power of the measuring instrument like the Caution item Fig 1 xg Connect the oscilloscope probe to P4 connecter 80 Pin of Y SUS PCB and GND ne Turn the VR1 of Y SUS PCB and make the A wave form Fig 2 to be 20 1us 2 Adjusting Vset down Voltage Wave form Turn the VR2 of Y SUS PCB and make the B wave form Fig 2 to be 150 5us Vsetup 200E1V Vs Vsc5 115E1V Fig 2 Y Z set up Waveform 3 Adjusting the Voltage Wave form of Vramp x Connect oscilloscope Probe to the B37 Pin on Z PCB and the GND xz Turn the VR3 of Z PCB and make the C wave form Fig 3 to be 7us But in case of not setting up the Test point produce same output and adjust wave form connect to other pattern or parts which has no possibility of short 2 1us Sus Fig 3 Z ramp Waveform 5 Adjustment after Assembling PDP Module Adjustment 5 1 Using Tools 1 2 3 4 1 Digital oscilloscope More than 200MHz DVM Digital Multimeter Fluke 87 or similar one Signal generator VG 825 or similar one DC power supply DC power supply for Vs 1 Should be changeable more than 0 200V more than 10A DC power supply for Va 1 Should be changeable more than 0 100V more than 5A DC power supply for 5V 1 Should be changeable more than 0 10V more than 10A DC DC Converter Jig 1 The Jig which
25. y cause fire or electric shock 4 If the product emits smoke and abnormal smell or makes an abnormal sound immediately turn off the power Continuing to use the product it may cause fire or electric shock 5 Do not disconnect or connect the connector while power to the product is on It takes some time for the voltage to drop to a sufficiently low level after the power has been turned off Confirm that the voltage has dropped to a safe level before disconnecting or connecting the connector 6 Do not pull out or insert the power cable from to an outlet with wet hands It may cause electric shock 7 Do not damage or modify the power cable It may cause fire or electric shock 8 If the power cable is damaged or if the connector is loose do not use the product otherwise this can lead to fire or electric shock 9 If the power connector or the connector of the power cable becomes dirty or dusty wipe it with a dry cloth Otherwise this can lead to fire 10 PDP Module uses a high voltage Max 450V dc Keep the cautions concerning electric shock and do not touch the Device circuitry when handling the PDP Unit And because the capacitor of the Device circuitry may remain charged at the moment of Power OFF standing by for 1 minute is required in order to touch the Device circuitry Y CAUTIONS 1 Do not place this product in a location that is subject to heavy vibration or on an unstable surface such as an in
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