Related Manuals for LG PDP42V5 Series
Summary of Contents for LG PDP42V5 Series
- Page 1 PDP MODULE SERVICE MANUAL MODEL : PDP42V5#### 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..
- Page 2 SAFETY PRECAUTIONS PDP Module is a display device to be divided into a Panel part (8) If the power cable is damaged, or if the connector is loose, and a Drive part. The Panel part consists of do not use the product: otherwise, this can lead to fire or Electrodes, Phosphor, various dielectrics and gas, and the Drive electric shock.
- Page 3 (26) If faults occur due to arbitrary modification or disassembly, (14) If inserting components or circuit board in order to repair, be LG Electronics is not responsible for function, quality or other sure to fix a lead line to the connector before soldering.
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Page 4: Table Of Contents
[PDP42V5#### Module] CONTENTS ¥ . Formation and Specification of Module ¥–. Adjustment ¥†. 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. -
Page 5: Formation And Specification Of Module
¥ . Formation and Specification of Module External Cable Connection Connector Input Signal P1[Z SUS B/D] 5V, Va, Vs P5[Y SUS B/D] 5V, Vs P6[Y SUS B/D] P21, P31[CTRL B/D] Video Signal Part No. Description 6871QCH025A PWB(PCB) ASSY TMDS CTRL B/D ASSY 6871QCH029A PWB(PCB) ASSY LVDS CTRL B/D ASSY... -
Page 6: Adjustment
¥– . Adjustment 1. Application Object (2) Measuring the voltage Margin of Vs and deciding the voltage (3) Adjusting and checking the voltage of DC/DC pack This standard is applied to the PDP42V5#### PDP Module (Vsetup, Vscw, -Ve, -Vy) which is manufactured by the manufacturing team of PDP (4) Adjusting the voltage wave form of Vset-down promotion department or elsewhere. - Page 7 But, Initially setting up voltage can be changed by the set ¤ŁTurn the VR3 of Z PCB and make the “C” wave form Fig. up range according to the Module’s characteristic. 3 to be 15!2µs. But, in case of not setting up the Test point, produce 5-3.
- Page 8 ¤æ Convert the signal of signal generator to 100% Full Black signal. ¤ Repeat the adjustment (2) item and name each voltage as Vsmin5/Vsmax5 and record them. ¤ At this time decided Vs voltage (Vsmin1-Vsmin5)adds 6V to Max value and set up the voltage within the set-up range(180V <...
- Page 9 E/X Tube E/X Tube E/X Tube Y - SUS Y - SUS Y - SUS Z - SUS Z - SUS Z - SUS CONTROLLER CONTROLLER CONTROLLER X right X right X right voltage voltage voltage DC Power Supply for 5V voltage voltage DC Power Supply for Va...
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Page 10: Trouble Shooting
¥†. Trouble Shooting 1. Checking for no Picture A screen doesn¡fl t display at all and condition of black pattern or power off. (1) Check whether the CTRL B/D LED(D1~D4) 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. - Page 11 <A : Y B/D Output wave - 1Frame> <B : Y B/D Output wave - 7~12 SF> <A : Z B/D Output wave - 1Frame> <B : Z B/D Output wave - 1SF> <X B/D Output wave - 1 FRAME> <X B/D Output wave - 1 SF>...
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Page 12: Hitch Diagnosis Following Display Condition
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 (Include not be shown part of Data COF quantity or a part) shown (1) The problem between Data COF and X B/D is more (1) Confirm the power connector of X B/D is well plugged in possible that the screen is not be shown as data COF. -
Page 13: Regular Stripe Is Generated About The Quantity Of One Data Cof Ic Or More
2-3. It Generates Unusual Pattern of Data 2-4. Regular Stripe is Generated about the COF IC unit Quantity of one Data COF IC or more (1) In case of generating unusual pattern of Data COF IC unit (1) In case of generating regular stripe about the quantity of as below picture, there is problem in the check that is input one Data COF IC, there is problem at the output of output- into Data COF IC... - Page 14 2-5. The screen display has a problem for 2-6. The screen has a vertical line with Scan FFC. regular gap. (A vertical stripe flash at especial color) (1) It’s may be a problem between Scan FFC and Y B/D. (2) Check the connection of Y B/D and Scan COF. (1) This is a problem about control B/D.
- Page 15 2-8. The screen has one or several vertical 2-11. The screen displays other color line partially on full white screen or happens discharge partially on full black screen. (1) In this case, It isn’t a problem about controller B/D or X B/D.
- Page 16 ¥‡. Block Diagram - 16 -...
- Page 17 ¥·. Records of Revision for Boards and ROM DATA 1. Board Date Board Part Number Note 2003.04.21 CTRL B/D ASSY(TMDS) 6871QCH025A Initial Product 2003.04.21 CTRL B/D ASSY(LVDS) 6871QCH029A Initial Product 2003.04.21 YDRV Upper B/D ASSY 6871QDH051A Initial Product 2003.04.21 YDRV Lower B/D ASSY 6871QDH052A Initial Product 2003.04.21...
- Page 18 2. ROM DATA Date ROM Data Version Contents 2003.04.21 42V5_06 Initial ROM Data of TMDS 2003.04.21 42V5_08 Initial ROM Data of LVDS - 18 -...
- Page 19 June, 2003 3828VD0143E Printed in Korea...
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