三星SDI PDP 屏维修.ppt

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1、42”SD V3.11三星SDI PDP 屏维修资料 Still waters run deep.流流静静水深水深,人人静静心深心深 Where there is life,there is hope。有生命必有希望。有生命必有希望42”SD V3.12No.Name of BoardAbb.No.Name of BoardAbb.B1X-Main Driving BoardXMB6Logic Buffer Board(E)LBEB2Y-Main Driving BoardYMB7Logic Buffer Board(F)LBFB3Y-Scan Buffer Board(Upper)YBUB8

2、Logic Buffer Board(G)LBGB4Y-Scan Buffer Board(Lower)YBLB9Main PSUMPSUB5Logic Main BoardLMB10Sub PSUSPSUBoard LayoutB3B4B5B6B7B10B1B2B8B942”SD V3.13No.Name of BoardNo.of ScrewNo.Name of BoardNo.of ScrewB1X-Main Driving Board8B6Logic Buffer Board(E)6B2Y-Main Driving Board7B7Logic Buffer Board(F)3B3Y-S

3、can Buffer Board(Upper)5B8Logic Buffer Board(G)6B4Y-Scan Buffer Board(Lower)5B9Main PSU8B5Logic Main Board7B10Sub PSU4B11Heat Dispersion Bar7Positions of Screw MountBlue Dot:SCREW 4X12Red Dot:SCREW 3X1042”SD V3.14No.Name of BoardConnectionNo.Name of BoardConnectionF1FPC(Flexible Printed Circuit)Pane

4、l YBU,LF5FFC(Flexible Flat Cable)LM-LBEF2Flat CablePanel XMF6FFC(Flexible Flat Cable)LM-LBFF3FFC(Flexible Flat Cable)LM-YMF7FFC(Flexible Flat Cable)LM-LBGF4FFC(Flexible Flat Cable)LM-XMSignal Connectors of BoardsF4F1F2F5F6F7F342”SD V3.15Power Cable ConnectorsH6H4H1H2H8H7H5H10H3No.FromToNo.FromToH1MP

5、SU(CN8003)YM(CN5008)H6MPSU(CN8004)SPSU(CN9007)H2MPSU(CN8002)XM(CN4001)H7MPSU(CN8007)SPSU(CN9006)H3MPSU(CN8005)LBE(CN806)H8LBE(EF1)LBF(FE1)H4MPSU(CN8008)LM(CN803)H9LBF(FG1)LBG(GF1)H5MPSU(CN8009)SPSU(CN9005)H10MPSU(CN8001)Power CordH942”SD V3.16Cautions1.The PDP module uses high voltage which is dange

6、rous to human body.It is required for service engineer to check if any foreign material is inside which causes electrical short before power on.It is also required for service engineer not to touch the electrical devices while power is alive.2.The PDP module is sensitive to electrically conductive d

7、ust and moisture.Therefore,the disassembly and re-assembly work to repair,adjust or replace part(s)should be always done at clean environment.3.The PDP module includes many electrical devices.The service engineer should wear any kinds of anti-static mean(e.g.earth ring)to prevent from electrical sho

8、ck to module by electrostatics.4.The PDP module use fine pitch connectors and flat cables of which terminal must be correctly matched(aligned).If the connector is re-connected after repair work,it should be well aligned.5.The capacitors in the boards remain temporarily charged even after the power i

9、s turned off.After turning off the power,you must be sure to wait at least one minute before touching the Module.6.The capacitors in the PSU(Main and Sub)remain temporarily charged even after the power is turned off.After turning off the power,you must discharge PSU with dummy discharge resistor.42”

10、SD V3.17Required Tools and Measuring Devices1.Tools 1)(+)type Screw Drivers:to screw the screws 2)Air Blower 3)Earth Ring 4)Small Driver:to adjust potentiometer 5)Dummy Discharge Resistor:2.4kOhm/10W2.Measuring Devices 1)Oscilloscope :500MHz sampling 2)Probe:10:1 3)Digital Multi-meter 4)Signal Gener

11、ator42”SD V3.18How to connect/disconnect the FFC and TCP to connectors*Cautions:Please be cautious that the pins of connector of FPC do not bend by miss-aligning of male and female connectors.2.How to Connect1)Push with same pressure at both sides until completely inserted1.How to Disconnect1)Pull O

12、ut with two hands from both sides of plastic plate42”SD V3.19How to connect/disconnect the CN4003,4,5 at XM Board1)Push down the Flat Cable slightly and Insert to the slot of connector.2)Lock the locker until“tick”sounds.2.How to Connect1)Pull Out the locker of connector.1.How to Disconnect2)Push do

13、wn the Flat Cable slightly3)Take back the Flat Cable.42”SD V3.110How to connect/disconnect the FFC and TCP to connectors(1)1.FFC(Flexible Flat Cable):between LM-XM,LM-YM,LM-LBE,F,G2.TCP(Tape Carrier Package):between LBE,F,&G and PanelFFC ConnectionTCP Connection42”SD V3.111How to connect/disconnect

14、the FFC and TCP to connectors(2)2.How to Connect TCP1.How to Disconnect TCP2)Push the cover until“Tick”sounds2)Take out the film of TCP from the slot carefully1)Flip over the cover of connector carefully1)Insert TCP film to the slot carefully Please be sure that the TCP and connector are well aligne

15、d each other.*Caution 1)It is highly recommended to blow up any dust in a connector slot before re-connect a TCP.2)When you touch the TCP,please do much care of electrostatic discharge.42”SD V3.112How to connect/disconnect the FFC and TCP to connectors(3)4.How to check Miss-alignment of TCP3.Miss-al

16、ignment1)Miss alignment may cause hard fail.3)Measure the resistance between#1 pin and#5 pin of CN806.-resistance several kohm :OK -resistance 40volt2.VR5002 Adjustment:Vset flat time:Typ.10usec4.VR5001 Adjustment:3th SF falling flat time=Typ.30usec =Max.50usec =Min.0usec3.VR5003 Adjustment:falling flat time=Typ.30usec =Max.50usec =Min.0usec*Pay close attention to above adjustment order.TP:VschVR500442”SD V3.120How to adjust voltages of PSU1)Measure the voltage at each Test Point.2)Adjust the volume until it reach same voltage value as written on the VOLTAGE LABEL of PDP Module.