42 inch pdp tm

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42424242 Inch(Wide)Inch(Wide)Inch(Wide)Inch(Wide) PDP SVC Training ManualPDP SVC Training ManualPDP SVC Training ManualPDP SVC Training Manual

LG Electronics / DND QA

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ContentsContentsContentsContents

. Usage/Service Points to be concerned

. Module formation & spec

. Screen defect diagnosis

1. 4/7 or 3/7 of screen is not displayed.2. Screen by Data COF is not displayed.

3. one or more of Data COF IC have regular vertical lines.

4. Data COF IC unit error pattern

5. The screen by Scan COF is not displayed.

6. Regular- interval vertical line in the whole screen.7. Vertical data copy

8. One or more vertical bars.

9. One or more horizontal bars.

10. Input signal pattern is displayed but the whole brightness of screen is dark.

11. In full white pattern, foreign color is displayed or in full black pattern, mis-discharge is partially occurred..

12. In full white pattern, the brightness is getting darker toward the center.

13. A specific brightness of one color is not clear.

. Non-picture defect diagnosis

. One Point Service Guide(42 Inch, 40 Inch)

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LG Electronics/DND QALG Electronics/DND QALG Electronics/DND QALG Electronics/DND QA GrGrGrGr

.... Usage/Service points to be concernedUsage/Service points to be concernedUsage/Service points to be concernedUsage/Service points to be concerned

SUGGGESTIONS

1. Static precautionDrive section circuit is C-MOS circuit, so to protect against static electricity, wear static-proof wrist band.

2. Cleaningwhen wiping panel, do not use liquid cleaner or other chemicals . Use a damp cloth for cleaning .

3. handlingColor PDP uses high voltage(Max.500V). Be aware of electronic shock when handling PDP Unit and dont touch drive circuit.and even driver circuits capacitor is turned off but charge still remains there, so to touch drive circuit, be sure to wait at least 1 minute.

4. Warning when connecting signal & Power Connector in operation

do not touch connector while Color PDP is operating.

5. PDP servicing and guaranteeGlass Panel and Drive Circuit section are linked and operating together.if you disassemble and assemble the product in your own hands , LGE is exempted from the guarantee of function, quality and etc.

6. Damage in still imageColor PDP uses fluorescent material. The quality of PDP fluorescence by nature becomes deteriorated if using it in the same condition of CRT.To prevent this symptom, input full-screen regularly or use screensaver software.

So do not display the still image for a long time.

7. Temperature & ventilationColor PDPs Glass Panel section and Drive circuit section emit the heat so the temperature shall be kept under 40.the temperature of glass panel section is pretty high because built-in drive circuit emits the heat.PDP is operating with high voltage therefore be sure to keep it away from conductive objects.

8. Warning when handling Modulebe aware that PDP shall not be touched by metal or hard objects and shocked by the heat or mechanical force.be careful when disassembling or handling.

be sure to wear glove for preventing injury when the glasss broken.

Color PDP is a display device consisting of Panel section & Drive section. Panel section is composed of electrode,fluorescent substances ,dielectrics and gases, and drive section is a combination of electrical circuit section andPCB section. We call this concrete as PDP Module Assy and the following shows warning.

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Service warning

1. One DVM ( FLUKE 87 or similar type )2. Digital Oscilloscope ( over 200MHZ )

Defect diagnosis tool

1. When inserting parts or PCB, fasten the lead line to terminal before soldering.2. When inserting high- voltage resistance(metal oxide film resistance or metal film resistance), keep 10mm away from PCB3. High-voltage or high-temperature parts shall be away from the lead line.4. This chassis is insulation(cold) chassis but for safety, it is better to use insulation trance.

when servicing power board, be sure to use insulation trance.

5. While PDP Module is in operation, do not connect or remove lines.

With COF or panel defect, report it to LGE PDP module service department.

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6/79LG Electronics/DND QALG Electronics/DND QALG Electronics/DND QALG Electronics/DND QA GrGrGrGr

ITEMS SPECIFICATIONS(Tentative)

Screen Size: 42 inch/ 106cm diagonalAspect Ratio: 16 :9 (width:height)Resolution: 852 x 480 Pixels(SD grade)Peak Brightness : typ.240cd/m (with filter 60%)Contrast Ratio: 700:1(Dark Room & with filter 45%)Viewing Angle: 160 horizontally and verticallyDisplayable Colors: 16.7 millionWeight: kg (MNT), kg(D/stand), kg(spk.)x2Life: >25,000 hours

(elapsed time to 50% of initial brightness)Dimensions(MNT) : 105.6cm wide, 63.4cm high, 8.2cm deepInput Terminals : RF terminal(PAL/SECAM/NTSC)(Set Top Box) Composite Video input(RCA) X 2, S-Video

Audio L&R input(RCA) X 2Component Video (Y,Pb,Pr) + R/L for DVDComponent Video (Y,Pb,Pr)+ R/L for HDTV Stb.RGB-SUB 15 pin for HDTV Stb.(480p/720p/1080i)Analog RGB-SUB 15pin(PC VGA ~SVGA)

Stereo Input for PC AudioOutput Terminals : Analog RGB-SUB 15 pin(PC/DTV input bypass)(Set Top Box) Audio L&R(RCA)

RGB-SUB 25 Pin for MNT(RGB/HV in & Control)Composite Video output + R/L output

Input Terminals : Analog RGB-SUB 15 pin (Compatible with PC(MNT) VGA ~SVGA, Compressed XGA)

RGB-SUB 25 Pin for STB(RGB/HV in & Control)Component Video (Y,Pb,Pr) for DVD & DTV Stb.

Composite Video input(PAL/SECAM/NTSC)Audio L&R input(RCA)X2

Display Frequency : 15.73kHz to 60kHz horizontally, 50Hz to 75Hz(V)Picture : PIP(2Tuner:STB), Twin Picture, Digital Comb filter,

Digital Video Enhancer(Jagging free )Sound : A2 stereo, AVL, Dolby Virtual, 2x10WrmsRemote Control : Included(Unified)External Control : D-sub 25-pin connectorPower Source : 110-240V , 50/60 HzPower Consumption: 300 watts( with Max. Audio : 320W)

MN-42PZ10(42W PDP MNT)

Market:Korea / N_ America / S_AmericaMarket:Korea / N_ America / S_AmericaMarket:Korea / N_ America / S_AmericaMarket:Korea / N_ America / S_America(2001.July~)(2001.July~)(2001.July~)(2001.July~)

Spec of ModelsSpec of ModelsSpec of ModelsSpec of Models

RNRNRNRN----BA11(3SystemMulti STB)BA11(3SystemMulti STB)BA11(3SystemMulti STB)BA11(3SystemMulti STB)430(W)X78(H)X280mm(D)

((((Exampleof DeskTopType)Exampleof DeskTopType)Exampleof DeskTopType)Exampleof DeskTopType)

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P3 P2

VR2 VR1 VR1

Y SUS B/D ASSY CTRL B/D ASSY

ZSUS B/D ASSY

X RIGHT B/D ASSY

Label

P2

P100

P300

P1

X LEFT B/D ASSY

P4

P6

P5

YD

R

VUpper

B/DA

SSY

YD

RVLowerB

/DA

SSY

P1

P2

.... Module diagram & specModule diagram & specModule diagram & specModule diagram & spec

PART NO. product name standard1 6871QTH003B PWB(PCB) ASSY ZCNTTOPB/D ASSY2 68 71QZH002B PWB(PCB) ASSY ZSUSB/D ASSY

3 68 71QTH004B PWB(PCB) ASSY ZCNTBOTTOMB/D ASSY4 68 71QLH012A PWB(PCB) ASSY X LEFTBOTTOMB/D ASSY5 68 71QRH010A PWB(PCB) ASSY XRIGHTBOTTOMB/D ASSY

6 68 71QDP016B PWB(PCB) ASSY YDRVUpper B/D ASSY7 68 71QDP017B PWB(PCB) ASSY YDRV Lower B/D ASSY8 68 71QYH015A PWB(PCB) ASSY YSUSB/D ASSY

YDRV B/D ASSY

ZCNT TOP B/D ASSY

ZCNT BOTTOM B/D ASSY

EXTERNAL CABLE CONNECTIONEXTERNAL CABLE CONNECTIONEXTERNAL CABLE CONNECTIONEXTERNAL CABLE CONNECTION

connector supply signal

P~P2[XB/D] 5V, 5V,VAP3[YSUSB/D] VSC,VSETUPP2[YSUSB/D] 5V, 5V,VS

P[ZSUSB/D] 5V, 5V,VSP300[CTRL B/D] 5VP00[CTRL B/D] VIDEOSIGNAL

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YYYY---- BoardBoardBoardBoard

ControllerControllerControllerControllerBoardBoardBoardBoard

ZZZZ---- BoardBoardBoardBoard

CN1CN1CN1CN1

CN2CN2CN2CN2

Local keyLocal keyLocal keyLocal key

EMI FilterEMI FilterEMI FilterEMI Filter

VSCVSCVSCVSCBoardBoardBoardBoard

POWERPOWERPOWERPOWERBoardBoardBoardBoard

XXXX Board(R)Board(R)Board(R)Board(R)XXXX Board( L )Board( L )Board( L )Board( L )

YYYY----

Drive

Driv

e

Drive

Driv

e

YYYY----

Drive

Drive

Drive

Drive

MainPowerMainPowerMainPowerMainPower

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STBSTBSTBSTBSTBSTBSTBSTB

PCPCPCPCPCPCPCPC

VideoVideoVideoVideoVideoVideoVideoVideo

DVDDVDDVDDVDDVDDVDDVDDVD

LA7222LA7222LA7222LA7222LA7222LA7222LA7222LA7222

VPC3230VPC3230VPC3230VPC3230VPC3230VPC3230VPC3230VPC3230 SDA9410SDA9410SDA9410SDA9410SDA9410SDA9410SDA9410SDA9410 CXA2101CXA2101CXA2101CXA2101CXA2101CXA2101CXA2101CXA2101 THS8083THS8083THS8083THS8083THS8083THS8083THS8083THS8083

CXA2022SCXA2022SCXA2022SCXA2022SCXA2022SCXA2022SCXA2022SCXA2022S

MX88L284MX88L284MX88L284MX88L284MX88L284MX88L284MX88L284MX88L284BufferBufferBufferBuffer

HC541HC541HC541HC541

BufferBufferBufferBuffer

HC541HC541HC541HC541

LA4282LA4282LA4282LA4282LA4282LA4282LA4282LA4282

MICOMMICOMMICOMMICOM

CXP750010CXP750010CXP750010CXP750010

HC74HC74HC74HC74HC74HC74HC74HC74

PD

P

MPDULE

PD

P

MPDULE

PD

P

MPDULE

PD

P

MPDULE

2222MMMM----SDRAMSDRAMSDRAMSDRAM2222MMMM----SDRAMSDRAMSDRAMSDRAM

Monitor Block diagramMonitor Block diagramMonitor Block diagramMonitor Block diagram

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MICOM

EEPROMX2416P

VIDEOSWITCH

(M52758FP)

AUDIO

L

RAUDIO AMPLA4282(L&R)

5

5

RGBHV

RGBHV 3

H/VSOG

COLOR DECODER

(VPC3230D)

DEINTERLACE

(FLI2200)

MEMORY(4M-BYTE)

ENHANCER

(FLI2220) COLOR CONTROL&

VIDEO SWITCH

(CXA2101Q)

3Y,Pb,Pr(STB)3Y,Pb,Pr(MNT)

A/D CONVERTER

(CXA3516R) SCALER

(JAG200)

MEMORY (6M-BYTE)

EPLD

(GEN. CLAMP)

Buffer(74F574 x 4)

H

V

Clamp

2H/V

H

HV

2PLLH/CLK

5

H/V/CLK/HBLK/VBLK

4

H/V/DE/CLK

DISP_EN

5

RGBHV

3RGB

3RGB

5Y,U,V,H,V

SoundProcessor

(MSP3401G)

2H/V

MONOSTALE MULTIBIB.

SOG_OUT CLAMP_AD

PORT EXP(M62320X3)

ROM(AT29C010)

(74HCT373)

YCbCr/YPbPr

CVBS

2

YUV

41P

8

4

H/V/FIELD/LLC1

MN-42PZ10 VSC(JAG200 & FLI2200) Block Diagram

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TUNER.1

1

CXA2069Q

A/V SWV, L/R

V, L/R

S-VHSY / C

AUDIO

MSP3401G

SoundProcessor

2nd SiF

L/R(tv)

DVD/DTV(RCA JACK)

VPC3230D(MAIN)

VidoProessor

Y,Cr,Cb (DVD)

DVD_Y

VPC3230D(SUB)

VideoProessor

MS81V04160FRAME

MEMORY

PCL / R

Y,Pb,Pr(DTV)

Y,Pb,Pr(DTV)

RGB(PC)

CVBS

RGB

M52758FPRGB/YUV

S/W

DCF

RE

WE

RN-BA11(Tuner Receiver) Block - DiagramRN-BA11(Tuner Receiver) Block - Diagram Ro

Lo

Y/C2

MNT_OUT

CVBS

Y/C

OPTION

TUNER.2

TV (M)

TV (S)L/R(tv)

Y/C

M52756FPRGB/YUV

S/W

RGB (DTV)

RGB(OSD)

LGTV1001DRP

CXA2119MS/W

+

YUV

L/R

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Connecting25Pin cableConnecting25Pin cableConnecting25Pin cableConnecting25Pin cable(when connecting25Pin cable,(when connecting25Pin cable,(when connecting25Pin cable,(when connecting25Pin cable,Connectexternal equipmenttoSTB)Connectexternal equipmenttoSTB)Connectexternal equipmenttoSTB)Connectexternal equipmenttoSTB)

Product back & monitor in/output sectionProduct back & monitor in/output sectionProduct back & monitor in/output sectionProduct back & monitor in/output section

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Power BoardPower BoardPower BoardPower BoardYYYY----Drive(TOP)Drive(TOP)Drive(TOP)Drive(TOP)

YYYY----BoardBoardBoardBoard

VSCBoardVSCBoardVSCBoardVSCBoard

YYYY----Drive(Bottom)Drive(Bottom)Drive(Bottom)Drive(Bottom)

ZZZZ----BoardBoardBoardBoard

Controller BoardController BoardController BoardController Board

EMI FilterEMI FilterEMI FilterEMI Filter

Connection diagram (back coverConnection diagram (back coverConnection diagram (back coverConnection diagram (back covers open)s open)s open)s open)

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BACKCOVERBACKCOVERBACKCOVERBACKCOVER

POWERBOARDPOWERBOARDPOWERBOARDPOWERBOARDVSCBOARDVSCBOARDVSCBOARDVSCBOARD EMI FilterEMI FilterEMI FilterEMI Filter

Exploded view (Back Cover, VSC, EMI, Power )Exploded view (Back Cover, VSC, EMI, Power )Exploded view (Back Cover, VSC, EMI, Power )Exploded view (Back Cover, VSC, EMI, Power )

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PANELPANELPANELPANEL

YYYY----BOARDBOARDBOARDBOARD

ZZZZ----BOARDBOARDBOARDBOARD

CONTROLCONTROLCONTROLCONTROL

BOARDBOARDBOARDBOARD

XXXX----BOARDBOARDBOARDBOARD

XXXX----BOARDBOARDBOARDBOARD

YYYY----DriveBOARDDriveBOARDDriveBOARDDriveBOARD

YYYY----DriveBOARDDriveBOARDDriveBOARDDriveBOARD

Exploded view (Module)Exploded view (Module)Exploded view (Module)Exploded view (Module)

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VSCBoard(Front)VSCBoard(Front)VSCBoard(Front)VSCBoard(Front) EMI FilterEMI FilterEMI FilterEMI Filter

Power BoardPower BoardPower BoardPower Board ZZZZ---- BoardBoardBoardBoardYYYY----BoardBoardBoardBoard Control Board(Back)Control Board(Back)Control Board(Back)Control Board(Back)YYYY----DriveBoard(Top)DriveBoard(Top)DriveBoard(Top)DriveBoard(Top)

YYYY----Drive BoardDrive BoardDrive BoardDrive Board

MainPowerMainPowerMainPowerMainPowerSwitchSwitchSwitchSwitch

Parts (back covers open)Parts (back covers open)Parts (back covers open)Parts (back covers open)

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XXXX----Board(Right)Board(Right)Board(Right)Board(Right)XXXX----Board( Left)Board( Left)Board( Left)Board( Left)

Control BoardControl BoardControl BoardControl Board ZZZZ----BoardBoardBoardBoardYYYY----BoardBoardBoardBoardYYYY----DriveBoardDriveBoardDriveBoardDriveBoard

EMI Filter & VSC Board are separatedEMI Filter & VSC Board are separatedEMI Filter & VSC Board are separatedEMI Filter & VSC Board are separated

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Pow er w el l pow er Board-K orean m ark et Murat a Pow er Board

Power Board ( SMPS )Power Board ( SMPS )Power Board ( SMPS )Power Board ( SMPS )

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1. The 4/7 or 3/7 of screen is not displayed.

1) Check the X B/D power connector.

2) Check the connector between CTRL B/D and X B/D.

3) Replace the X B/D.

relations between screen and X B/D

screen X B/D

left 4/7 of screen Right X B/D

right 3/7 of screen Left X B/D

type

i) screens left(4/7) ii) Screens right(3/7)

Non-displaying part

Displaying part

.... Screen defect diagnosis

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2. No image by Data COF. (the case one Data COF is totally or partially not displayed included)

1) It is mainly caused by related Data COF and X B/D connection error.

2) Check the connector between that Data COF & X B/D.

3) When Data COF has a defect, replace the related X B/D.

examples of screen display type( beside the below, any out of 7 Data COF can be occurred. )

partially displaying

ok

Non-image

Set x pattern( GND ) to ANODE,

y Pattern (resistance joint part ) to CATHOD,

Test diode forward and backward.Measure resistance value.(10)

x GNDyresistance

Data COF IC test method

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3. Data COF IC unit error

1) As pictures below, this is caused by the clock error of Data COF IC

2) With , , , check Data COF connector and replace the X B/D.

3) With , , check the connector between CTRL B/D & X B/D and replace X B/D or CTRL B/D.

Cases

Two every-second IC error in one

4 IC errors in one COF

Data COF IC unit error in the whole X B/D

Data COF IC unit error in the whole screen.

One IC error in one COF

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casePartial error or total error with One or more ICs

defect.

4. Regular vertical line with one or more Data COF IC

1) Regular vertical line with one Data COF IC is mainly caused by X B/D output terminal buffers output error. When two Data COF ICs have regularvertical lines, it means the data transfer from Controller B/D to X B/D has an error.

2) Check the related X B/D connector.

3) Replace that X B/D or CTRL B/D

screen X B/D

left 4/7 of bottom screen Right X B/D

right 3/7 of bottom screen Left X B/D

relation between screen & X B/D

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5. The screen by Scan FFC is not displayed

1) It is mainly caused by the bad connection between Scan FFC & Y B/D.

2) Check the related connector between Scan COF & Y B/D.

3) When Scan IC has a defect, replace the related Y DRV B/D.

case 1/8 of the screen

total or partial non- image

SCAN IC check

Set Vpp Pin to ANODE, GND pin to CATHOD and test diode forward and backward.

OK

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6. Regular vertical lines in the whole screen. (mainly in one specific color, regular line is flicking)

1) This problem is related to CONTROL B/D.

2) Replace CONTROL B/D

case

Regular vertical lines in the whole screen

7. Vertical Data copy

1) It possibly happens when scan wave does not form properly.

2) Replace Y DRVB/D or Y SUS B/D

case

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8. One or more vertical lines in the screen.

1) Irregular vertical line is not related to Controller B/D or X B/D.

2) It is mainly caused by the followings open(or short).- Panel itself defect

- DATA COF FPC attached to panel is open or short.

- DATA COF attached to panel itself defect

3) Replace module

caseThere are several types.

Several lines in area.It can be seen on the both side, right and left.

The area is sometimes over .

9. One or more horizontal lines in the screen.

1) Irregular borizontal line is not related to Controller B/D or Y B/D.

2) It is mainly caused by the followings open(or short).

- Panel itself defect

- SCAN FPC attached to panel is open or short.

- SCAN IC attached to panel itself defect

3) Replace Y DRV B/D

case

Not always like this.

There can be several horizontal lines

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10. Input signal pattern is displayed but the whole brightness of the screen is dark.

1) It happens when Z B/D is not operating well.2) Check whether Z B/Ds power connector is plugged .

3) Check whether the connector between Controller B/D & Z B/D is plugged.

4) Replace Controller B/D or Z B/D.

11. In full white pattern, foreign color is displayed or in full black pattern, mis-dischargeis partially occurred.

1) Check the slope of Y B/D set up, set down waveform.

2) Check the slope of Z B/Ds ramp waveform

3) Measure each B/Ds output waveform by over 200MHz oscilloscope and compare it to the below picture.

it is possible to control Y B/Ds setup slope by adjustinng VR2, setdown slope by VR1 and Z B/Ds ramp slope by VR1..

- Y B/D measurement point : TP ( Connector P4 36 pin )

- Z B/D measurement point : panel connection part ( SUS_OUT )

setup

setdown230s

25s

230V

Vsetup

175V

Vs

Y output voltage wave

175V

Vs

15s

20s

Z RAMP voltage wave

0V

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13. A specific brightness of one color is not clear.

1) Check CTRL B/Ds input signal connector.

2) Replace CTRL B/D.

12. In full white pattern, the brightness is getting darker toward the center.

1) It happens with Z B/Ds ramp waveform

2) Check the connection between CTRL B/D and Z B/Ds connection cable.

3) Replace Z B/D.

case

NNNN iiii D f di iD f di iD f di iD f di i

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Non- image or same symptom when power off or black pattern.1) Check CTRL B/Ds LED(D1~D4).

2) Check the power or signal cable input into CTRL B/D.3) Check X B/D, Y B/D and Z B/Ds power connector.

4) Check the connector between CTRL B/D and X B/D, Y B/D, Z B/D respectively.

5) Measure each X, Y, Z B/Ds output waveform with over 200MHz oscilloscope and compare it to the below picture to detect the defect

and replace that.

- Y B/D measurement point : TP ( Connector P4 36 pin )

- Z B/D measurement point : panel connection part ( SUS_OUT )

- X B/D measurement point : L1(RIGHT), L2(LEFT BOTTOM)

< A: Y B/D output waveform - 1 FRAME >

< B: Y B/D output waveform - 1 SF >

1Frame(16.7ms)

.... NonNonNonNon----picturepicturepicturepicture Defect diagnosis.Defect diagnosis.Defect diagnosis.Defect diagnosis.

5) Test scan(Y) IC.

6) Test data(X) COF IC.

7) Replace CTRL B/D.

< B: Y B/D output waveform - 2 SF(non-Setup SF) >

6)Test scan(Y) IC.7)Test data(X) COF IC8)Replace CTRL B/D.

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< B: Y B/D output waveform - 7~12 SF(SE) >

< B: Z B/D output waveform - 1SF >

< A: Z B/D output waveform - 1Frame >

< A: Y B/D output waveform - 1Frame >

< X B/D output waveform - 1 FRAME >

< X B/D output waveform - amplification >

< X B/D output waveform - 1 SF >

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amplified amplified

: outside Leg

: inside Leg

P 6, P 4 both are the first pin, whenwiring, it should be done as picture

shown.

(bend the wire to Y-Driver B/D not

to Y-B/D . If not there can be noise)

Dont be confused with Pin number

Improved since Dec,2001.

P 4

P 6

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Besurenottomisconnectthe line.Besurenottomisconnectthe line.Besurenottomisconnectthe line.Besurenottomisconnectthe line.Seethepicturepreciselyandthen connectjumpwireattheexacSeethepicturepreciselyandthen connectjumpwireattheexacSeethepicturepreciselyandthen connectjumpwireattheexacSeethepicturepreciselyandthen connectjumpwireattheexactpointtpointtpointtpoint

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X CANVAS X CAVBAS

Intermittent noIntermittent noIntermittent noIntermittent no----image/image error while watchingimage/image error while watchingimage/image error while watchingimage/image error while watching

Thescreen is intermittentlydisappeared. LED isgreenThescreen is intermittentlydisappeared. LED isgreenThescreen is intermittentlydisappeared. LED isgreenThescreen is intermittentlydisappeared. LED isgreen screen isdistortedscreen isdistortedscreen isdistortedscreen isdistortedweiderlyweiderlyweiderlyweiderly (happened2aday)(happened2aday)(happened2aday)(happened2aday)

normalnormalnormalnormal

cause:bad connectionbetweenYcause:bad connectionbetweenYcause:bad connectionbetweenYcause:bad connectionbetweenY----Boardand#1,2pinofBoardand#1,2pinofBoardand#1,2pinofBoardand#1,2pinofYYYY----DriveBoardConnectorDriveBoardConnectorDriveBoardConnectorDriveBoardConnector

troubleshooting: connectbad linkingbetweenYtroubleshooting: connectbad linkingbetweenYtroubleshooting: connectbad linkingbetweenYtroubleshooting: connectbad linkingbetweenY----Board &Board &Board &Board &YYYY----Drivewithjumpwire (all 4parts)Drivewithjumpwire (all 4parts)Drivewithjumpwire (all 4parts)Drivewithjumpwire (all 4parts)

seeworking instruction(revisedsince Dec,2001.1)seeworking instruction(revisedsince Dec,2001.1)seeworking instruction(revisedsince Dec,2001.1)seeworking instruction(revisedsince Dec,2001.1)

CANVASX

N PN P

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X CANVAS


CANVASX

NoPowerNoPowerNoPowerNoPower

( inST( inST( inST( inST----BYmode,butno LED)BYmode,butno LED)BYmode,butno LED)BYmode,butno LED)

Checkthepower supply&mainpower S/WonCheckthepower supply&mainpower S/WonCheckthepower supply&mainpower S/WonCheckthepower supply&mainpower S/Won

Check EMIboardfuse(checkthe rated capacity)Check EMIboardfuse(checkthe rated capacity)Check EMIboardfuse(checkthe rated capacity)Check EMIboardfuse(checkthe rated capacity)

No PowerNo PowerNo PowerNo Power

Fuse 15 AFuse 15 AFuse 15 AFuse 15 A

Besuretouse ratedfuse.Besuretouse ratedfuse.Besuretouse ratedfuse.Besuretouse ratedfuse.

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X CAVBAS


CANVASX

whenPowerwhenPowerwhenPowerwhenPowerson, after 2~3sec, itson, after 2~3sec, itson, after 2~3sec, itson, after 2~3sec, itsoffsoffsoffsoff

( LED changinggreen into red)( LED changinggreen into red)( LED changinggreen into red)( LED changinggreen into red)

CHECK: removeSTBandoperatemonitor individually.CHECK: removeSTBandoperatemonitor individually.CHECK: removeSTBandoperatemonitor individually.CHECK: removeSTBandoperatemonitor individually.(checkSTBdefector Monitor defect)(checkSTBdefector Monitor defect)(checkSTBdefector Monitor defect)(checkSTBdefector Monitor defect)

Whenusing ANALOG STB, checkSTBonlyWhenusing ANALOG STB, checkSTBonlyWhenusing ANALOG STB, checkSTBonlyWhenusing ANALOG STB, checkSTBonlyMNMNMNMN----42PZ10onlySTB:RN42PZ10onlySTB:RN42PZ10onlySTB:RN42PZ10onlySTB:RN----BA11BA11BA11BA11

RemoveeachBoardRemoveeachBoardRemoveeachBoardRemoveeachBoardspower supply connector and checkthepower isoff.spower supply connector and checkthepower isoff.spower supply connector and checkthepower isoff.spower supply connector and checkthepower isoff.

Whenthepower isnotoff,replacethe relatedboard.Whenthepower isnotoff,replacethe relatedboard.Whenthepower isnotoff,replacethe relatedboard.Whenthepower isnotoff,replacethe relatedboard.

No RasterNo RasterNo RasterNo Raster

N PiN PiN PiN Pi

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X CANVAS


CANVASX

nopicture(LEDnopicture(LEDnopicture(LEDnopicture(LEDsgreen)sgreen)sgreen)sgreen)

Core checkpoint: removeSTBandoperatemonitor individually.Core checkpoint: removeSTBandoperatemonitor individually.Core checkpoint: removeSTBandoperatemonitor individually.Core checkpoint: removeSTBandoperatemonitor individually.(checkwhether(checkwhether(checkwhether(checkwhether STBSTBSTBSTBssssadefector monitoradefector monitoradefector monitoradefector monitorsone)sone)sone)sone)

No PictureNo PictureNo PictureNo Picture

Withmonitor defect, check VSCandthenWithmonitor defect, check VSCandthenWithmonitor defect, check VSCandthenWithmonitor defect, check VSCandthen Controller Board.Controller Board.Controller Board.Controller Board.

Troubleshooting: replaceVSCBoardTroubleshooting: replaceVSCBoardTroubleshooting: replaceVSCBoardTroubleshooting: replaceVSCBoard

Address Bar ( Hori ontal Bar )Add B ( H i t l B )Add B ( H i t l B )Address Bar ( Hori ontal Bar )

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X CANVAS


CANVASX

no image(LEDno image(LEDno image(LEDno image(LEDsgreen)sgreen)sgreen)sgreen)

Cause:YCause:YCause:YCause:Y----Drive(Bottom)defectDrive(Bottom)defectDrive(Bottom)defectDrive(Bottom)defect

Troubleshooting:YTroubleshooting:YTroubleshooting:YTroubleshooting:Y----Drive(lower part) replacementDrive(lower part) replacementDrive(lower part) replacementDrive(lower part) replacement

Address Bar ( Horizontal Bar )Address Bar ( Horizontal Bar )Address Bar ( Horizontal Bar )Address Bar ( Horizontal Bar )

YYYY----DriveBoard(Bottom)DriveBoard(Bottom)DriveBoard(Bottom)DriveBoard(Bottom)

Thisproblem isshown inthebottomofscreen,Thisproblem isshown inthebottomofscreen,Thisproblem isshown inthebottomofscreen,Thisproblem isshown inthebottomofscreen,So it is causedbyYSo it is causedbyYSo it is causedbyYSo it is causedbyY----DriveDriveDriveDrive


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X CANVAS


CANVASX



YYYY----DriveBoard(Top)DriveBoard(Top)DriveBoard(Top)DriveBoard(Top)

Cause:YCause:YCause:YCause:Y----DriveBoard(upper part) defectDriveBoard(upper part) defectDriveBoard(upper part) defectDriveBoard(upper part) defect

Troubleshooting:YTroubleshooting:YTroubleshooting:YTroubleshooting:Y----DriveBoard replacementDriveBoard replacementDriveBoard replacementDriveBoard replacement


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X CANVAS


CANVASX


PD501 ConnectorPD501 ConnectorPD501 ConnectorPD501 Connector


cause:PDcause:PDcause:PDcause:PD----501Connector contactpointdefect501Connector contactpointdefect501Connector contactpointdefect501Connector contactpointdefect

troubleshooting:PDtroubleshooting:PDtroubleshooting:PDtroubleshooting:PD----501Connector replacement501Connector replacement501Connector replacement501Connector replacement

(withPD(withPD(withPD(withPD----501Connector contactpointdefect,501Connector contactpointdefect,501Connector contactpointdefect,501Connector contactpointdefect,Variousdefectsymptoms canbeseen)Variousdefectsymptoms canbeseen)Variousdefectsymptoms canbeseen)Variousdefectsymptoms canbeseen)

High frequency noise (High frequency noise (High frequency noise (High frequency noise (BeeBeeBeeBee sound)sound)sound)sound)

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X CANVAS


CANVASX

normal picturewithhighfrequencynoise(normal picturewithhighfrequencynoise(normal picturewithhighfrequencynoise(normal picturewithhighfrequencynoise(beebeebeebee))))

High frequency noise (High frequency noise (High frequency noise (High frequency noise (BeeBeeBeeBee sound)sound)sound)sound)

C81780.22uF

electrolyticcapacitor insertion

OpenC8139 rightleadandthen

wireR8164 rightlead

Power (SMPS)BoardPower (SMPS)BoardPower (SMPS)BoardPower (SMPS)Board

1.C81780.221.C81780.221.C81780.221.C81780.22/50Vadd/50Vadd/50Vadd/50Vadd2.OpenC8139 right lead,2.OpenC8139 right lead,2.OpenC8139 right lead,2.OpenC8139 right lead,

andthen connect ittoandthen connect ittoandthen connect ittoandthen connect ittoR8164 right lead.R8164 right lead.R8164 right lead.R8164 right lead.

Improvedsince Nov,2001Improvedsince Nov,2001Improvedsince Nov,2001Improvedsince Nov,2001

SMPS issupposedtooperateSMPS issupposedtooperateSMPS issupposedtooperateSMPS issupposedtooperatewithhighfrequencysowithhighfrequencysowithhighfrequencysowithhighfrequencysosmall noise isnot consideredsmall noise isnot consideredsmall noise isnot consideredsmall noise isnot consideredasadefect.asadefect.asadefect.asadefect.

#.#.#.#.Slightnoise isnotadefectandwritedownexplanationSlightnoise isnotadefectandwritedownexplanationSlightnoise isnotadefectandwritedownexplanationSlightnoise isnotadefectandwritedownexplanation

No picture in rightNo picture in rightNo picture in rightNo picture in right 2/5 area2/5 area2/5 area2/5 area

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X CANVAS


CANVASX

No picture in rightNo picture in rightNo picture in rightNo picture in right---- 2/5 area2/5 area2/5 area2/5 area

Nopicture inthe rightNopicture inthe rightNopicture inthe rightNopicture inthe right---- 2/5 area2/5 area2/5 area2/5 area

XXXX----Board( Left)power supply checkBoard( Left)power supply checkBoard( Left)power supply checkBoard( Left)power supply check

XXXX----Board( Left)Connector checkBoard( Left)Connector checkBoard( Left)Connector checkBoard( Left)Connector check

XXXX----Board( Left) replacementBoard( Left) replacementBoard( Left) replacementBoard( Left) replacement

Address Bar (Vertical )Address Bar (Vertical )Address Bar (Vertical )Address Bar (Vertical )

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X CANVAS


CANVASX


stripe in rightstripe in rightstripe in rightstripe in right----2/5area2/5area2/5area2/5area

XXXX----Board( Left)power supply checkBoard( Left)power supply checkBoard( Left)power supply checkBoard( Left)power supply check

XXXX----Board( Left)Connector checkBoard( Left)Connector checkBoard( Left)Connector checkBoard( Left)Connector check

XXXX----Board( Left) replacementBoard( Left) replacementBoard( Left) replacementBoard( Left) replacement

No picture in left 3/5 of the screenNo picture in left 3/5 of the screenNo picture in left 3/5 of the screenNo picture in left 3/5 of the screen

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X CANVAS


CANVASX

XXXX----Board(Right)power supply checkBoard(Right)power supply checkBoard(Right)power supply checkBoard(Right)power supply check

XXXX----Board(Right)Connector checkBoard(Right)Connector checkBoard(Right)Connector checkBoard(Right)Connector check

XXXX----Board(Right) replacementBoard(Right) replacementBoard(Right) replacementBoard(Right) replacement

left3/5ofscreenwithvertical stripesleft3/5ofscreenwithvertical stripesleft3/5ofscreenwithvertical stripesleft3/5ofscreenwithvertical stripes

No picture in left 3/5 of the screenNo picture in left 3/5 of the screenNo picture in left 3/5 of the screenNo picture in left 3/5 of the screen


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X CANVAS


CANVASX

XXXX----Board(Right)power supply checkBoard(Right)power supply checkBoard(Right)power supply checkBoard(Right)power supply check

XXXX----Board(Right)Connector checkBoard(Right)Connector checkBoard(Right)Connector checkBoard(Right)Connector check

XXXX----Board(Right) replacementBoard(Right) replacementBoard(Right) replacementBoard(Right) replacement


left3/5ofscreenwithvertical stripes.left3/5ofscreenwithvertical stripes.left3/5ofscreenwithvertical stripes.left3/5ofscreenwithvertical stripes.

No RedNo RedNo RedNo Red

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X CANVAS


CANVASX

no Red(Bor G )no Red(Bor G )no Red(Bor G )no Red(Bor G )

Besurenottobend itbyforceor internalBesurenottobend itbyforceor internalBesurenottobend itbyforceor internalBesurenottobend itbyforceor internalInsulated conductor canbedown.Insulated conductor canbedown.Insulated conductor canbedown.Insulated conductor canbedown.

TestMonitor individually.TestMonitor individually.TestMonitor individually.TestMonitor individually.

Ifdetectaproblemwithmonitor, checkVSCBoard.Ifdetectaproblemwithmonitor, checkVSCBoard.Ifdetectaproblemwithmonitor, checkVSCBoard.Ifdetectaproblemwithmonitor, checkVSCBoard.

If ithasaproblemwithSTB connecting,focuson 25Pin.If ithasaproblemwithSTB connecting,focuson 25Pin.If ithasaproblemwithSTB connecting,focuson 25Pin.If ithasaproblemwithSTB connecting,focuson 25Pin.

Besurenotto connect5Pin(APBesurenotto connect5Pin(APBesurenotto connect5Pin(APBesurenotto connect5Pin(AP----EA10)byforceEA10)byforceEA10)byforceEA10)byforce

25252525PinCableP/No: GVZ APPinCableP/No: GVZ APPinCableP/No: GVZ APPinCableP/No: GVZ AP----EA10EA10EA10EA10

No RedNo RedNo RedNo Red

1) X - Board COF Connector separation

42424242 InchInchInchInch

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Lift up the right and left of X-BOARD CONNECTOR. Lift up X-BOARD CONNECTOR and separateCOP CONNECTOR by pulling up.

When you handle COF CONNECTOR, dont pressure. First release LOCK and separate.

If COF CONNECTOR is damaged, you should replace MODULE ASSY. So, be aware of this!!

1) X Board COF Connector separation

When you exchange X-Board, first you should separate COFConnector. Be careful to handle it.COF Connector is attached to Module. When COF Connector isbroken, Module ASSY must be replaced a new one.

When you exchange X-Board, first you should separate COFConnector. Be careful to handle it.COF Connector is attached to Module. When COF Connector isbroken, Module ASSY must be replaced a new one.

WarningWarning

COF Connector

42424242 InchInchInchInch

2) X - Board Connector separation

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Lift up each edge of left/right. Lifted condition

2) X Board Connector separation

Its easy to separate it by releasing Connector Lock .

Do not pressure or it can be hurt.When LOCK is hurt, replace a new X-BOARD

WarningWarning

Be careful to handle LOCK or it can be broken.When LOCK is broken, replace a new X-BOARD.

3) Y - Board COF Connector separation

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Pull the white LOCK as shown in arrow

Pull the white LOCK as shown in arrow.

Separate COF CONNECTOR by pulling in the left.

3) Y Board COF Connector separation

WarningWarning

Be careful to handle LOCK and COF Connector. When LOCK part is damaged, you should replacea new Y-Board. In case of COF Connector, Module Assembly.

4) Z - Board COF Connector separation

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4) Z Board COF Connector separation

Separate the fixed Screw of Z-Board.Pull out Lock as shown in arrow.

Condition in Lock part is pulled Pull COF Connector as shown in arrow.

Its easy to separate COF on conditionthat Z-Board Screw is separated.In case Z-Board is assembled, its reallyhard to separate.

Be careful not to tear COF Connector.

If COF Connector is torn, replace a new Module Assembly

WarningWarningCOF Connector

5) Connector separation Guide

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Push LOCK and pull out

PUSH PUSH PUSH

5) Connector separation Guide

PUSH PUSH PULL

6) Control Board & VSC Board Connector

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)

7) Gas injection (Sealing up) condition

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Be sealed up after gas injection

Be careful to handle the sealed-up part after gas injection.If it is broken, the gas escapes. So, replace the Module.

) j ( g p)

WarningWarning

Be sealed up after gas injection

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9) Power off in 2 ~ 3 minutes(Protection)

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L813 Cold Solder

CheckCheck

Open the Connector connecting to each Board to check the power is off.

if each Board is same, check the Power Board and voltage.

Symptom : As soon as the power on,its off in 2 - 3minutes.(PROTECT operation)

Cause : No VS voltageL813 Coil cold soldering.

10) ADD BAR inspection and repair

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MP-40PA10 uses 4 board such as left,right, top and bottom.

Divide the screen in 4 and once you see ADD BAR check COF CONNECTORbetween MODULE and X-BOARD.If there is no defect in COF CONNECTOR replace X-BOARD.But the problem still remains and check the connector between X-BOARD andCONTROL BOARD. And if you cant find defect, check CONTROL.

HEATRUN : WHITE

Press the ADJ KEY and check the position of add bar by changing WHITE orRED or BLUE or GREEN

Top Right Top Left

Bottom Right Bottom Left

11) One Point Service Guide

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Symptom : B color 1 Address line Open

Cause : Dented COF

COF is dented

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Symptom : Inferior R Address color

Cause : Inferior DATA output by cold soldering 16 pin of IC14 in X-L-TOP( Normal waveform after tearing off IC Pin)

Countermeasure : Replace X-L-TOP board.

IC14

Cold Soldering

Abnormal waveform by cold soldering

Normal waveform after tearing off IC pin

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CheckCheck

The blue spreads on the screen (Mis-discharge)and power off in 2 ~ 3 seconds.If you turn on again, it will be same problem.

Symptom Causes Countermeasure

If 15V line voltage reducesbelow 14V,Mis-discharge occurs andpower off because ofprotection circuit.

Replace PSU(Power Supply Unit)and defective X-Board.

If when Power on, screen shows like above and turn off in 2 seconds, check if turning off or not by disconnectingall X & Y boards.

Defective X-Board

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Check

Check

The top left part of screen is broken(Top Right X-BOARD)

Symptom Cause Countermeasure

No 5V supply to Top rightX-Board.

Connect 5V line

Check Top right X-BOARD 5V.(If 0V, it happens)

Check 5V line from SMPS to X-BOARD.

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CheckCheck

Pinkish screen in the top left.(Top right X-BOARD)


No Va(70V) supply to Topright X-Board.

Connect 70V line

Check Top right X-BOARD Va(70V).(If 0V, it happens)

Check 70V(Va) line from SMPS to X-BOARD.

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CheckCheck

The 3/5 top left in the screen is blank(Top Right X-BOARD)


Check Top right X-BOARD 12V.( If 0V, it happens )

Check Top right X-BOARD Va(70V).(If 0V, it happens)

Check 12V & 70V(Va) line from SMPS to X-BOARD.

No 12V supply to Top rightX-Board.

No Va(70V) supply to Top

right X-Board.

Connect 12V line

Connect 70V line

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CheckCheck

The 3/5 top right of the screen is blank.(Top left X-BOARD)


No 12V supply to Top leftX-Board.

No Va(70V) supply to Top

left X-Board.

Connect 12V line

Connect 70V line

Check Top left X-BOARD 12V.( If 0V, it happens )

Check Top left X-BOARD Va(70V).(If 0V, it happens)

Check 12V & Va(70V) line from SMPS to X-BOARD.

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CheckCheck

Pinkish screen in the 1/5 top right(Top left X-BOARD)

P1 COF connector on Top leftX-Board is open.

Reassemble it

Check the contact point and Locking of P1 on Top left X-BOARD.


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CheckCheck

The 3/5 bottom left of screen is broken.(BOTTOM RIGHT X-BOARD)


No 5V supply to bottom rightX-Board.

Connect 5V line

Check Bottom right X-BOARD 5V.( If 0V, it happens )


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CheckCheck

The 3/5 bottom left of the screen is Blank.(Bottom Right X-BOARD)


Check Bottom right X-BOARD 12V.( If 0V, it happens )


No 12V supply to bottom rightX-Board.

No Va(70V) supply to bottom

right X-Board.

Connect 12V line

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CheckCheck

The 2/5 right of the screen is broken.(Bottom left X-BOARD)


Check Bottom left X-BOARD 5V.( If 0V, it happens )


No 5V supply to bottom leftX-Board.

Connect 5V line

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CheckCheck

The 2/5 right part of the screen is blank.(Bottom left X-BOARD )

No 12V supply to bottom leftX-Board.

Connect 12V line

Check Bottom left X-BOARD 12V.( If 0V, it happens )



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CheckCheck

ADDRESS bar appears in the right bottom of the screen.(X-BOARD BOTTOM LEFT)

The connecting of X-Board bottomleft connector is bad.

Reassemble it.

Check connecting of the connector of bottom left X-BOARD.

Reassemble it.

X-BOARD BOTTOM LEFT CONNECTOR

OPEN.


ExamplesExamplesExamplesExamples

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CheckCheck

Screen is divided in top and bottom, and vertical barappears.

Connector(P13) is OPEN orConnecting condition is bad

Reassemble P13.

P13 CONNECTOR contact point inferior CHECK.

P13 CONNECTOR SIGNAL CHEK.

P13 CONNECTOR


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CheckCheck

Screen is broken and has the vertical/horizontal bar.

VSC Board Connector is Open. Reassemble VSC BoardConnector

Check the connector connecting

Reassemble the Connector


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CheckCheck

The screen is bluish(Mosaic screen)

Loose VSC Board Connector Reassemble VSC BOARDConnector

Check the connection condition of the Connector.

Reassemble the Connector.


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CheckCheck

The mosaic appears in the screen when it connects to VIDEO Input.(The sensibility of Y-signal is low.)When connected to Component Input, it is O.K.

Bad IC203 Replace IC203(VPC3230D)

Check if X201 on VSC board oscillates.Check Video In/Out of IC203 on VSC board.

IC201(VPC3230D)

Decoder IC


ExamplesExamplesExamplesExamples

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IC201(VPC3230D) Decoder is inferior

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CheckCheck

Noise with division of colors

Bad Connector connectingControl Board and VSC B/D.

Contact point and signal condition of Connector Control Board and VSC Board.

Abnormal Normal

Bad Connector

SymptomCause

Countermeasure

Change the Connector

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Name No signal Vertical Bar

Symptom Cause and Countermeasure

Realization

1.Cause : Bad IC2 (DA1)

8cm

When ASIC Chip(IC2 DA1 LGD4001) on Control Board getshigh temperature, you can observe it(In normal temperature its O.K. )

IC2 DA1(Data Arrange) No.162 Pin output is changing

depending on the temperature. abnormal X-Bd Buffer IC

* Room temperature : 2.5V Output (Normal Pin = over 2.8V)

* Heated : 1.5V Output(Normal Pin = 2.7V )

Bad IC2 (DA1)

< Waveform of normal pin>

heated

< Waveform of abnormal pin >

heated

DA1

Buffer

DA1

Buffer

Buffer(74ACT541) waveform abnormally narrows. In this case, it is impossible for Flip Flop(74AC574) onX B/D to read data.

2. Countermeasure : Replace IC2

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Name Add Open (Green 1 Line)


1.cause: Add. COF Drive IC inferior

Normal Line Data waveform Open Line Data output waveform

the output of inferior line less than that of the normal LineAdd. COF Drive IC inferior

COF inspection

: 24V Open check (normal 50V)

Add. COF Drive IC

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Name Vertical bar when Power off/on(Mis-discharge)


Realization

1.PDP Power on Mode external input(regardless of wire/wireless signal but its easy to reenact in wireless

signal)2. Remove Power Cord (Powers off)3.after about 20minutes, insert Power cord

(automatically the Powers on and the vertical bar is shown as above)

1.Cause : Control board malfunctions when Power off/on.

2.Countermeasure: Change some parts on Control board.

3.Changing parts : A32_CTRL_03 B/D (Marked on PCB)

-.R14,17,18,21 : 330 ==> 4.7K (Chip Resistor)-.R15,16,19,20 : 22K ==> 4.7K (Chip Resistor)-.C504, 505 : 0.1uF / 50V add (Chip Capacitor)

Control board

42 inch pdp tm

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