LG Plasma Training Manual

Plazma (PDP)

LG Electronics/DND /CS Gr.

Contents1. PDP feature2. PDP discharge & structure theory3. Module & organization4. Symptom wise trouble audit5. Image Sticking audit6. Other Module audit


1. PDP Feature


PDP Feature

large size/lightweight/thin size are easyPDP forms Line polarity inversion between two plate glasses and has a shape of injected Plasma gas so it

can be made thin as one tenth of CRT thickness

And when over 40 wide screen is made, comparing CRT that increases cathode ray length and LCD that must

form transistor every Cell, PDP has features that mass-production is possible if only Line polarity inversion

length is increased. In case of 40, manufacture in weight 40 below thickness 10cm below is possible so PDP

can be applied to not only wall tapestry TV but also for Presentation or for information flag wide screen Display.

- 3 -Great Company Great People QAS 365QAS 365

PDP merits

Thin type

1/10 of CRT1/10 of CRT

Light weight

1/6 of CRT1/6 of CRTMaking Large is easy

40 inch40 inch60 inch60 inch

80 inch80 inch

Wide viewing angle

160160oo or moreor more

Good screen Uniformity Not influenced by Earth magnetic field

NN

CRTCRTPDPPDP

SS

contrary to usual Analog TV(PRT/CRT) it has no Flicker ,so it is the Digital drive Display Device that makes no eyes fatigued though long time watching.


2. PDP discharge & structure theory


Plasma Display Panel structure PDP outline

discharge Cell

Panel

Module

Circuit

1 Pixel

Glass


PDP is an abbreviation of Plasma Display Panel and means electronic display device that injects gas such as He+Ne+Xe between glasses that are made airtight by front glass, rear glass and partition between them and authorizes voltage to polarity inversion of plate and cathode then radiates neon light then uses it for display.

Barrier Rib

(Front Glass Substrate)

Sustain Electrode

Dielectric LayerProtection Layer(MgO)

Dielectric Layer

Bus Electrode

Under Layer

Phosphor(R,G,B) Address Electrode

(Back Glass Substrate)

PDP (Plasma Display Panel) ?


PDP outline

Plasma Display Panel structure PDP outline

< Front Glass>

Protection(MgO) Dielectric

Layer

BUSPolarityinversion

ITO polarity inversion

W/B

Barrier Rib

Electrode Fluorescent

< Back Glass >

PlasmaPlasma

Visible Light

UV

Address polarity inversion Glass

partition

Bus polarity inversionITO polarity inversion

Fluorescent material(R,G,B)


AC-PDP discharge theory PDP outline

Visible Light

PlasmaPlasma

UVVisible LightVisible Light

Back Glass Substrate

Front Glass Substrate

Fluorescent substance(R,G,B)

partition

DielectricLayer

Dielectric protection layer (MgO)

Dielectric Layer

Address polarityinversion

Sustain polarityinversion

Bus polarity inversion

Under Layer

Gas Discharge

UV Generate

Visible Luminate

Display

Pulse type voltageauthorization topolarity inversion

Scan polarity inversion


AC-PDP discharge theory PDP outline

PDP Cell dischargethe image intensified CCD camera (ICCD)


3. Block Diagram 3-1. Block Diagram 3-2. Block Diagram 3-3. 3D Comb Filter

LG / /Gr

Block Diagram (PAL)

ZHINE

10

24

IEP

24

ADCW/PLL

DVI RXW/HDCP

Gm1602Scaler (Malibu)

Comp/RGB_SW

Comp_480i/p

TXO/1/2/3/CDisp-EnSDATASCLK,SLE

+-

CXA2069QSWITCH

VPC3230(M)Video Decoder

VPC3230(S)Video Decoder

SDA6001Text Processor

HYV641620SRAM

AM29LV160F-ROM

HY5DU283222ASD RAM(128M)

AM29LVF-ROM(1MB)HY57V64322

SD RAM(8MB)

S2300Delnterlacar

CXA2101

M52758FSwitch

74ACT253

ST3232C

74HCT08

24LC21

24LC21

74LS123

Tuner(M)

Tuner(S)

Text Video for Text

CXA_RGB

RGB_ Data

TX Out

RS232 RX/TXRGB PC

RGB DTV

Comp DTV

SCL/SDA

RX/TX0/1/2+ RX/TXC+

SCL/SDA

RGB HV

RGB PC/DTV

RX0/1 TX0/1

TXIR

Comp RGB_SWfrom Malibu

CVBS S-VHS Side AV BOARDComp_480i/pTo Malibu

Vin5 YCin5Comp_480i

Text_V

Main_YCMain_V

TV OUTVin1(CVBS)

1H RGBVin2(CVBS)

MNT OUT

Vin3(CVBS)

TU_Main

TU_Sub

Comp_Y

Analog BOARD

Vin4

YCin4

WIREIR

RS232

RGB(PC/DTV)

DVI(PC/DTV)

Scart1

Scart2

Scart3

RF

CVBS

S-VHS

Comp1(DVD/DTV)

Main_VMain_YC

Digital BOARD

Sub_Video

Main_Video

YCbCr

8

DVI_Data

Pos-t processing Block is omitted.So called JEPICO, in this caseTMDS TX is also required.Sound Processing Block Diagram is separatedRCA type Block Diagram is also separated..

Great Company Great People QAS 365QAS 365- 12 -

Block Diagram (NTSC)

CXA2069QSWITCH

WIREIR

RS232

RGB(PC/DTV)

DVI(PC/DTV)

74ACT253

ST3232C

74HCT08

24LC21

24LC21CXA2101

M52758FPIC202(MUX)

VPC3230(M)Video Decoder

VPC3230(S)Video Decoder

HY57V64322SD RAM(8MB)

IEP

ZHINE

LVDS31PIN

Tuner(M)

Tuner(S)

UPD64083

gm1501H(Scaler)

AnalogRGB

DVI

VPORT(24bit)

SVPORT(16bit)

M52758FPIC200

M52758FPIC400(MUX)

M62320FP(I2C Expender)

M37136(OPT)

LA7151M

FLI2300

TMDS Transter/Thine

TOFP 128KDDR Memory

Flash ROM512K/1M

RF

M656 8bitCOMB Y OUT

COMB C OUT

Main Y OUT

ALT_Y_480i_ SUBALT_Y2_480i_ SUB

DVD SUBDVD2 SUBSUB_Y OUTSUB_C OUT

RGB_DTV

RGB_PC

TX

HV

IIS

IISRGB DTV

IIS

DAC_RGB RGB_24bit

CAB_Comb

S/DVD_Comp

ALT_Y_480i_ MAINALT_Y2_480i_ MAIN

SW CVBS/YMAIN V OUT

MAIN Y OUT

MAIN C OUTCAB_VIN

DVD MAIN

DVD2 MAIN

Comp1(DVD/DTV)

Comp2(DVD/DTV)

CVBS IN

CVBSOUT

S-VHS

Side-CVBS

SideS-VHS

VIN2

Y/C IN2

S656 8bit

Y/CIN1

MNT OUT

VIN1

DTV2_Comp DTV_Comp

Side A/V

Analog BOARD

Digital BOARD


3D Comb Filter UPD64083GF

Block Diagram

4Mbit FrameMemory

4Mbit FrameMemory

C-Delay &C-Noise Reducer

C-Delay &C-Noise Reducer

YC SeparatorY Noise Reducer

3 Line Comb Filter

YC SeparatorY Noise Reducer

3 Line Comb Filter

Motion Detector3 Line Comb Filter3 Line Comb Filter

Motion Detector3 Line Comb Filter3 Line Comb Filter

WCV-ID Dec.

ID-1 Dec.

Y-Coring

Y-Pecking

Y-Enhancer

ID-1 Enc.

Non-Std.Detector

Sync.Separate Timing

Generator

10-bitC-ADC

10-bitY-ADC

10-bitC-ADC

10-bitY-ADC

S

E

L

S

E

L

S

E

L

S

E

L

Bias

Clamp

8 fsc PLL

10 bitFsc DAC

Fsc/227.5fHDec. Power

Down cont.

I C BusI/F

2Ext.Sync

Separate

Ext.Sync

Separate

BPFBPF

Y

4fsc

2I CBus Line

Y/CDigitalOutput

YOutput

COutput

10-bit DigitalComp. Input

CInput

Comp./YInput

20MHz

C


3. Module & organization

3-1. MN-60PZ90V (General type)3-2. DN-50PY10 (Speaker built-in type)3-3. DN-50PZ60 (Tuner built-in type)3-4. MN-50PZ90V (General type )3-5 .DN-40PY10 (Speaker built-in type )3-6. DN-42PZ60 (Tuner built-in type) 3-7. MN-42PZ90 (General type )3-8. Module Notation Method3-9. Module wise application model


CONTROL B/D

Y-DRIVE

BOTTOM

Y-SUS

B/D

Y-DRIVE

TOP

X-LEFT B/DX-RIGHT B/D

Z-SUS B/D

COFCOF

IPMIPM

PSU

Composition of PDP Boards 42 V6 Model


Introduction

Vsc-VyVsetup

Voltage label (Attached on back side of module)

Part No. label (Attached on board)

COF serial No. label (attached on COF)

BOARD ASS`Y PART NO.

PCB PART NO.

BOARD NAME

BOARD SERIAL NO.

COF SERIAL NO.


X Board

Receiving LOGIC signal from CONTROL B/D and make ADDRESS

PULSE(generates Address discharge)by ON/OFF operation, and supplies this waveform to COF(data)

X RIGHT B/D X RIGHT B/D

Power partSignal part

X LEFT B/D X LEFT B/D

Pull COF as shown in narrow.Lift up lock as

shown in narrow.


Z sustain Board

Make SUSTAIN PULSE and ERASE PULSE that generates

SUSTAIN discharge in panel by receiving LOGIC signal from

CONTROL B/D.

this waveform is supplied to panel through FPC(Z).

*composed with IPM,FET,DIODE, electrolytic capacitor ,E/R coil.

* IPM (Intelligent Power Module)

E/R(Energy recovery)

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

Pull FPC Connector as shown in arrow.

Condition in Lock part is pulled


Y Drive Board

1) This is a path to supply SUSTAIN ,RESET waveform which made

from Y SUSTAIN B/D to panel through SCAN DRIVER IC.

2) Supply a wave form that select Horizontal electrode (Y SUSTAIN electrode)

sequentially.

- potential difference is 0V between GND and Vpp of DRIVER IC

in SUSTAIN period.

- being generated potential difference between GND and Vpp only

in SCAN period.

* In case of 42 V6 use DRIVER IC IC 8 EA (TOP, BOTTOM: each 4EA)


Y sustain Board / Control Board

Y sustain B/D

: generates SUSTAIN,RESET waveform, Vsc(SCAN)voltage.

and supplies it Y DRIVER B/D.

* Composed with IPM,DIODE, electrolytic capacitor ,FET.

Control Board

: creates signal processing (Contour noise,reduction SM,..)

and an order of many FET on/off of each DRIVER B/D with

R,G,B each 8bit input.

* Use 3.3V/5V 2 kinds of power .


DC/DC Converter part

DC/DC con. part

: Being impressed 5V, Va ,Vs,

DC/DC converter makes

5V,Va,Vs,Vset_up,Vsc

which is essential for each B/D.

There is no DC/DC B/D in

model 40 /42 (1 POWER B/D).* 50 60 embedded DC/DC B/D

separately because of high power

consumption.


FPC / FFC

: supply a driving waveform to PANEL by connecting a PAD electrode of PANEL with PCB(Y and Z).

* there is two type of this for Y B/D. One is single-sided,another is double-side. These are having pattern on it

* for Z B/D, there is no pattern , single-sided, and Betatype(all of copper surface).

FPC (Flexible Printed Circuit)

FFC (Flat Flexible Cable)

: for connecting a Logic signal between B/D and B/D.*There is 0.5mm pitch,50pin type1mm pitch ,30pin type.


COF (Chip On Film)

: supply a waveform which made from X B/D to panel and select

a output pin that is controlled by COF when be on or off.

96 output pin per IC.

the more the resolution higher, the less spare space where can set IC on it in B/D. without using IC PACKAGE,

we can use a BARE IC , so we can get IC with LOW COST

because we do not solder IC on PCB directly,a soldering defect rate decrease.

* composition

1) FPC + Heat /Sink

FPC for COF must have a Low Spec decline with getting damp 2) CHIP resistor + CHIP CAPACITOR

3) BARE IC (STV7610A/WAF) + GOLD WIRE/AL WIRE

4) EPOXY MOLDING

Bare IC

* 42 V6 COF is the same as 42V5.


IPM ( Intelligent Power Module)

: composition

HEATSINK,CAPACITOR

DIODE

IC LINEAR

RESISTORTANSISTOR,FETS.

: description

Attached at Z B/D and Y B/D, make Sustain waveform.

Sustainer : supply a square wave to panel to make a video.

IPM


Monitor configuration diagram MN-60PZ90V

General type

Rv401 Vs Rv401 Vs

Rv601 VaRv601 Va

X-Board (L-TOP) X-Board (R-TOP)

X-Board ( L-Bottom) X-Board ( R- Bottom)

Z-BoardY-Board

VSC Board

Controller Board

POWER Board POWER Board

Y-Driver Board (Bottom)


PFC Board PFC Board

DC/DC Board


DN-50PY10Monitor configuration diagram

Speaker built-in type



Z-Board

Y-Board

VSC Board

Controller Board


X-Board (C-TOP)

X-Board ( C-Bottom)

DC/DC Board



Speaker RSpeaker L

Tuner Board


Rv401 Vs Rv401 Vs

Rv601 VaRv601 Va

Rv401 Vs Rv401 Vs

Rv601 VaRv601 Va

X-Board (R-TOP)


Z-BoardY-Board

VSC Board Down

Controller Board UP



Y-Driver Board (Bottom) DC/DC Board Down

X-Board (L-TOP)

DN-50PZ60,70Monitor configuration diagram

Tuner built-in type

X-Board (C-TOP)

X-Board ( L-Bottom)

A/V Box-Board


MN-50PZ90VMonitor configuration diagram

General type

Rv401 Vs Rv401 Vs

Rv601 VaRv601 Va

Rv401 Vs Rv401 Vs

Rv601 VaRv601 Va

X-Board (R-TOP)


Z-BoardY-Board

VSC Board Down

Controller Board UP




DC/DC Board

X-Board (L-TOP)

X-Board (C-TOP)

X-Board ( C-Bottom)


DN-42PY10Monitor configuration diagram

Speaker built-in type

X-Board L X-Board R

Z-Board

Y-Board

VSC Board

Controller Board


X-Board C

DC/DC Board



Speaker RSpeaker L

Tuner Board


DN-42PZ60,70Monitor configuration diagram

Tuner built-in type



Z-BoardY-Board

VSC Board UP

Controller Board Down




A/V Board


MN-42PZ90Monitor configuration diagram

General type

X-Board R

Z-BoardY-Board

VSC Board




A/V BoardControl Board + X-Board L


PDP Module Notation Method

P D P 5 0 X 2 0 3 0 1size ( INCH )

X : XGAV : VGA

VERSION

POWER = PSU (existence)Tool kind ( 1, 0 )

42 : 5 ~ 6 60 : 5

general : 0,3 high : 1, 4 PANEL

OLD.NEW notation outmoded : 0 CONTROL B/D new model : 3


PDP Module wise Application Model

1. General type40NVDN4 6348Q - A032D MN-40PA10, MN-40PA10A 42SD2 6348Q E031D MN-42PZ10 42SD3 6348Q - E032D MN-42PZ10, MN-42PZ12 50WXDP1 6348Q C030C MN-50PZ40S, MN-50PZ41 60HD3 6348Q B031D MN-60PZ10, MN-60PZ11K 60HD4 6348Q B034C MN-60PZ12, MN-60PZ15K

2. Low voltage 42SD4 6348Q E034A MN-42PZ40S

3. KK ModulePDP42V50330 6348Q E037T MN-42PZ90, MN-42PZ44S,

MN-42PZ95PDP42X10030 6348Q E041M DN-42PZ60,70, MN-42PZ65,75 PDP50X20330 6348Q C032A MN-50PZ90V, MN-50PZ44VS, DN-50PZ60,70

6348Q C032P MN-50PZ95V, DN-50PZ65, DN-50PZ75 6348Q C033S MN-50PZ95V, DN-50PZ65, DN-50PZ75

PDP50X50331 6348Q C035D DN-50PY10 PDP60X50330 6348Q B036A MN-60PZ90V, MN-60PZ95V

6348Q B037F MN-60PZ90V, MN-60PZ95V


4. Symptom wise Trouble Audit

4-1. The directions of remote control4-2. Audit by POWER LED4-3. Indication of LED state 4-4. C O F principles4-5. X-Board Audit4-6. Module Trouble Audit4-7. VSC Board Trouble Types4-8. Wrong discharge SVC Guide4-9. Module Control Inspection Method

4-10. Troubles Types when Version mixed4-11. Y,Y- Driver Symptom wise Troubles Types4-12. Z-Board Operation principles


The instructions of remote control

1. Method of Module used time confirmation and Reset 1-1. With pressing Menu Key of Set, press the

IN-Start Key of remote control (for about 5 seconds )

1-2. In the case of 42 KK Module, OSD that is read Option, in the case of 50 KK Module,ODS that is read Temperature indicated.

1-3. When pressing In-Stop button of remote control, initialization is finished 1-4. In the case of 60 KK Module, press the Vol + Key of Set then press the

Menu Key ( for about 5 seconds ) 1-5. OSD that is read Temperature is indicated 1-6. When pressing In-Stop button of remote control, initialization is finished

2 . Method of White Balance adjustment and confirmation 2-1. In the case of KK Model initiated MN- ,when pressing ADJ Key of

remote control, the confirmation is possible 2-2. In the case of KK Model initiated DN- ,when pressing ADJ Key of

remote control ,the following OSD are showed 0). E z Adjust 1). AD 9883A SET 2). VPX 3226 3). White Balance color adjustment 4). DVCO SET 5). White _ Pattern R,G,B, color confirmation6). Module Control 7). Temperature Threshold

NEW OLD

3. In the case of existed Model when pressing ADJ-Key, Power ON-Key, and IN Start-Key ,the confirmation of White-Balance and White-Patternis possible

3-1. For change and adjustment , use the CH+,CH- and VOL+, VOL- buttons


When POWER LED doesnt work

Is the power LED workedred when Standing-By ?

NO

YES

AC input terminalinspection

I s it changed to greenLED and worked when Powered ON?

NO

YES

When returning to red LED

Is each terminal B+ power (High power) supplied?

VS voltage inspection(180V LINE)

VA voltage inspec-tion (75V LINE)

V-Setup voltageinspection(240V LINE)

VSC voltage insp-ection (120V LINE)

Audio VCC power(30V LINE)

Does LED and oscillation of VSC Board worknormally?

NO

NO VCC power inspect-ion( 5V,12V LINE)

YES

Does LED and oscillationof Control Board worknormally?

NO Signal Cableinspection

YES VSC Board inspe-ction

YES

Is the set-up of Y-SUS ,down waveform genera-ted normally?

NOY-Board inspection

YES

Is VCC and signal ofZ-SUS connected?

NOZ-Board inspection

YES

Does Module make a noise?Is Back Light turned on?

YESModule inspection

NO Module ControlBoard inspection

DC/FAN inspection( 12V,5V inspection )

Power Boardinspection


LED state indication

off

red

scarlet on-off

green

Power on sign LED

The state MAIN power is off

Power stand-by state ( STAND BY )

The state preparing for working in Powerstand-by state

The state of working

When LED is returning to red with Power onWhen LED is returning to red with Power on

Y-SUS, Z-SUS inspection( DC/DC Board inspection )

X-Board inspection

Y-SUS, ( DC/DC Board)

180V is Downed (VS)

75V is Downed (VA)

120V Downed (VSC)240V Downed (V-Setup) Y-SUS, ( DC/DC Board)30V Down ed (Audio Line) VSC-Board, Audio Board

When FAN doesnt work DC / FAN, link connector, 12V,5V VCC confirmation


ONE POINT CHECK METHOD 42 KK

Regulation method VR Position such as VS voltage, VA voltage and voltage.


Power Supply (Sony Board)

P801P802P803P804P805P806P807

PODGNDGNDGND

Vs5V5V

5V-MNTGND12VGNDVs

GND5V

VS-ON12VGND5VVsVa5V

GND12V3.4V5VNC

GND5V

ST-BY 5VGNDGND

GNDGNDGND

RL-ONGND6V

GNDNC

GND

A-ON6V

GND

GNDVs

GND

6VGND

GNDVs

GND

GND25V

Va

GND25V

Va

3.4V 3.4V

Pin No 1 2 3 4 5 6 7 8 9 10 11 12

T103

T702

T101

T502P806

P807

P804

P805

Va ADJ

Vs ADJ

P801 P802 P803

VR601

VR401

ACINPUT

Vs Trans

Va Trans

ST-By Trans

Low VoltageTrans


Power Supply (Sanken Board)

T201

T271

T221P806

P807

P804

P805

Va ADJ

P801 P802 P803

VR501

VR401

ACINPUT

T121

Vs ADJ

Vs Trans

Va Trans

ST-By Trans

Low Voltage Trans

P801P802P803P804P805P806P807

PODGNDGNDGND

Vs5V5V

5V-MNTGND12VGNDVs

GND5V

VS-ON12VGND5VVsVa5V

GND12V3.4V5VNC

GND5V

ST-BY 5VGNDGND

GNDGNDGND

RL-ONGND6V

GNDNC

GND

A-ON6V

GND

GNDVs

GND

6VGND

GNDVs

GND

GND19V

Va

GND19V

Va

3.4V 3.4V

Pin No 1 2 3 4 5 6 7 8 9 10 11 12


No Power

X CANVAS

No Power ( It isnt lighted even in ST-BY)

Confirm if power is supplied and main power s/w is turned

ON confirm the EMI Board Fuse(confirm if it is rated capacity)

Be sure to use the fuse of rated capacity

Fuse 15 A


No Raster

X CAVBAS CANVASX

Normal screen stateIts turned off automatically after 2~3 seconds when power is on.(LED changes from green to red)

Model name : All models Main Check : confirm the B+ voltage supplied to each end (such as VS, VA, VSC, V-SETUP) Content of badness : It is turned off automatically after 2~3 seconds when power is on.

(LED changes from green to red) measures : change of Y-Board through VS voltage short


DC/DC Board Voltage Regulation Method

1. NC2. V setup3. V setup ( 15V )4. V setup ( GND )5. NC6. NC7. V sc 8. V sc ( 15V )9. V sc ( GND )

1. V y2. V y ( 15V )3. GND4. GND5. NC6. NC7. V e 8. GND

P23

1. V setup voltage regulation Vary the separate GND (2,4)VR2

2. V sc voltage regulation Vary the separate GND (7,9)VR1

3. -V y voltage regulation Vary the general GND VR4

4. -V e voltage regulation Vary the general GND VR3

VSC V setup- V y

- V e

P22


C O F principles

COF : CHIP ON FILM

Data COF IC inspection method3 8 4

COF IC COF IC COF IC COF IC

9 6

R,G,B, R,GBeach 16 X 6

resistance

R,G,B,R,G,Geach 16 X 6

GND

R,G,B each 32 items X 3 . 42 CTRL = 7 X 12.50 CTRL = 11 X 12 X 2.60 CTRL = 11 X 12 X 2

Regarding pattern( GND ) as ANODE, pattern ( resistance soldering part ) as CATHOD,Practice the diode inspection forward and backward.


X-Board audit point

screen screenscreen

screenscreen

screen

As the above, the space charging screen display is allocated for each X Board ( XL_TOP, XL_CNT, XL_BOT, XR_TOP, XR_CNT, XR_BOT ).

Thus, if the occurring screen problems are limited only to the space X B/D, For example, regular vertical line or abnormal screen in Data COF IC unit, Data COF unit can be the problems of X B/D.The inspection method will be explained in next chapter how to inspect when screen display doesnt work at all about each X B/D, giving examples of XL_Top B/D.


Module Trouble Audit Point

. When one or many Vertical lines are generated irregularly on screen. 1. When one or many lines generate irregularly, it is not the problem of Controller B/D X B/D. 2. In this case , it may be OPEN(or SHORT) generating due to the following.

- Trouble of panel itself

- The trouble of DATA COF itself attached to panel

- OPEN or SHORT of DATA COF FPC attached to panel

In the case of ADD-BAR

One BAR appears. It has colors.(magenta,cyan,yellow)In the case of RGBconversion ,specific coloris displayed normally.

Black BAR of 2`3cmthickness appears.Resistance (10) isbroken in front terminalof relevant COF IC

In the case ofADD-BAR

The symptom occurs in KK Module Relevant COFresistance is raised About 10 thicknessof bar appears



Module Trouble Audit Point


One BAR appears and ithas a color.(magenta,cyan,yellow)In the case of RGBconversion , specificcolor is displayed normally.


Module exchange

Many BARS appear andthey have colors.(magenta,cyan,yellow)In the case of RGBconversion , specificcolor is displayed normally

1. X Board inspection

2. Link connector inspection

3. Control Board inspection

4. Module inspection


ONE POINT SVC Guide Module

When specific color and ADD BAR appear When specific color and ADD BAR appear

Model name : All models main Check : confirm if it appears in a line and has specific color when changing to R.G.BContents of badness : When ADD BAR appears in a line (specific color, magenta, yellow) measures : change the module



Great Company Great People QAS 365QAS 365

Model name : All models main Check : check the 10 registance at the front end of COF ICContent of badness : When ADD BAR appears at intervals of 2~3cmmeasure : change the module

When ADD BAR appears in black at intervals of 2~3cm

- 50 -

When ADD BAR appears in black at intervals of 2~3cm

Module ONE POINT SVC Guide

When many ADD BAR appear When many ADD BAR appear

Model name : All models main Check : check the film connection at the front end of COF ICContent of badness : When many ADD BAR appearmeasure : change the module



When specific color and ADD BAR appear Check the film connector linking X-Board and Control Board

Model name : All models main Check : Check the film connector linking X-Board and Control BoardContent of badness : When 5~6cm ADD BAR appears ( specific color,magenta, cyan, yellow )measure : change the film connector




When black ADD BAR appears Check the film connector linking X-Board and Control Board

Bad work film is torn.

Model name : ever model main Check : Check the film linking X-Board and moduleContent of badness : When black ADD BAR appearsmeasure : change the module

- 53 -

VSC Board Trouble Types

In the case ofVSC Board

trouble

NO POWER( KEY doesnt work )

1. It operates in green LES, NO RASTER2. When CONTROL KEY doesnt work3. OSD isnt displayed

In the case of VSC Board

trouble Specific color isnt displayed

In the case ofVSC Board

trouble

Screen is distorted likeMosaic At this time, OSDworks normally


VSC Board ONE POINT SVC Guide

Red picture appears VSC Board DATA is different

Model name : MN-42PZ90 main Check : confirm the DATA value in a white balance control mode Content of badness : Red picture appears.(specific color is bad)measures : Modify the DATA value



Specific color doesnt appearSpecific color doesnt appear

Model name : All Model main Check : check the VSC Board and connection cable for settop box Content of badness : specific color doesnt appearmeasures : change the VSC Board



Picture distortion phenomenonPicture distortion phenomenon

Model name : All Model main Check : confirm the VSC Board oscillation of VSC BoardContent of badness : OSD is normal and picture is distortedmeasures : VSC Board change



Picture is distorted through mosaic phenomenon Picture is distorted through mosaic phenomenon

Model name : All Model main Check : Confirm the VSC Board oscillationContent of badness : Picture is distorted through mosaic phenomenonmeasures : change the VSC Board



Picture is distorted Picture shadow appears(smear)

Model name : All Models main Check : Confirm the VSC Board oscillationContent of badness : Picture is distorted through mosaic phenomenonmeasures : change the VSC Board



NO RASTER Confirm the SVC S/W position

Model name : All Models main Check : Confirm the VSC Board SVC S/W positionContent of badness : NO RASTERmeasures : modify the s/w position (upgrade s/w)


Wrong Discharge SVC Guide General type

In the case of wrong discharge trouble

After image appears like Shadow It occurs in oldModule It can be solvedwith VS voltage wrong regulation( about +,- 3~5V)

VR8501 VS

VR8401 VA

In the case of wrongdischarge trouble

When it isnt solved with VS

voltage,change the Y-SUS

Board.


42 KK ONE POINT SVC Guide


VSC Board Flicker is bad

Model name : All Models main Check : check the VSC BoardContent of badness : When wrong discharge appears in specific colormeasures : change the VSC Board

Wrong Discharge SVC Guide

(1) ROM Data change -- addition of Safe wave form Version : 50KK_DN05G Checksum : 4A05( file name : 50KK_DN05G_Checksum_4A05_1,2,3,4,5_new_safe.hex)

(2) Vsetup voltage regulation present 240V change 260 ~ 265V

3. Reliance inspection of second item SVC countermeasure contents

measure condition : normal temperature / Full White / Vsetup=265V / improvement ROM

a standard of judgment : regarding normal temperature(25) as standard, below 69

50KK

1. phenomenon : spot wrong discharge of low Gray pattern (animation dark screen wrong discharge) when pattern (Channel) changing, hit spot wrong discharge

2. Trouble improvement SVC plan

sDCDC Board Y SUS Board

T2 PC2 IC HS3 FET IC 6 HS5 FET

63 60 67 48 58 assurance test of high temperature reliance

(market returned products n=2unit)condition result

No problems in spot progress and reliance

55, 24hr


Wrong Discharge SVC Guide

1. The causes of wrong discharge

230VVsetup

Set up

Set down230s

25s175V

Vs

Y output voltage wave form

-The above wave form shows Set Up / Down generating wall charge in Panel.

-The wall charge generated through Set Up / Down wave plays important role in address discharge.

-If Vs voltage is lower than specified value in label of Panel,

- Roll-off of Set Down wave form becomes slack the amount of wall charge decreases the screen gets dark and SET OFF after all.

-If Vs voltage is higher than specified value in label of Panel,

Roll-off of Set Down wave form is situated behind the amount of wall charge increases screen gets bright due to failing to express dark graduation

accordingly, wrong discharge phenomenon occurs


Wrong Discharge SVC Guide General type

2. countermeasure

- Regulate the Va, Vs, -Vy, Vset-up voltage exactly with multi-meter referring to the voltage notation attached on right above of the Panel.

-VyVset-up

Va

Vs

Vs adj

-Vy adjVset-up adj

Va adj


Module Control Inspection Method General type

display type of screen

Vertical lines occurs at regular intervals on whole screen

The color of vertical line

RED

GREEN

BLUE

IC202, 205

IC201, 204

IC200, 203

The relation between color of vertical lineoccurring on screen and SGRAM (IC200-IC205)

. Regular vertical lines occurs at regular intervals on whole screen. (Generally, regular flickering phenomenon occurs in specific color)

1) Occurring regular vertical lines at regular intervals is the problem related to DA of Controller B/D.

2) Because DA is related to IC202, 205(Red), IC201,204(Green), IC200,203(Blue), confirm if these parts are soldered smoothly.

Confirm the parts related to the color of vertical lines occurring on the screen mainly and see the below as to related parts.3) Confirm if the connection between above parts are Shorted with 3.3v or Ground.

4) Confirm if the adjacent two pins are shorted each other in connection with above parts.

5) Confirm if specific pin is not soldered in connection with above parts.

6) Confirm if the pin connected IC200-IC205 of DA is generated well and soldered smoothly.

7) Check the PCB pattern .

8) Change the Controller B/D.


Module Control Board

50/60KK CTRL Block chart

Differntial input

TMDS 4Pair

LVDS 10Pair42 5Pair

TMDSLVDS

SPTC4021

Frame Memory(1 Dealy)

3EA(arranged deletion)

3Bit(Serial communication)

Flash Mem

16

100MHz(OSC) SSC

DA/MEM4011

DA/MEM4011

16*3(12*3)

16*3(12*3)

A

A

A

B

SF Mem(3)

SF Mem(3)

X, Y, Z Contro 8*3SF Mem(3)

SF Mem(3)8*3

8*3

8*3

4EA

4EA

Flash DownloadB

Temp Sense Micom

4

19

A74AC74

Demultiply dircuit

A

A

74LVTH541

Delay

74LVTH541

Delay

X Data((6*2)*11=132bit

X Data((6*2)*11=132bit

X clock Delay

X clock Delay


Trouble Types When Version Mixed 50 General type

MN-50PZ40SMN-50PZ41

Phenomenon ofversion mix

When Module version and Control

Board Version are mixed, only half

of the screen is displayed

New model Module Control PCBPAT : 6871QCH019B

Old model Module Control PCBPAT : 6871QCH019A


ONE POINT SVC Guide Module Control Board


Module Control Board Flicker is bad

Model name : MN-42PZ90 main Check : Confirm the control board and Mi com versionContent of badness : Flicker is badmeasures : change the control board

- 69 -


BARS appears at regular intervals Module Control Board

Model name : All Models main Check : Confirm the control board and Mi com versionContent of badness : BARS appear at regular intervals or OSD works normallymeasures : change the Module control board



Module Control Board BARS appears at regular intervals

Model name : All Models main Check : control board and VSC connect cable checkContent of badness : BARS appears at regular intervals and mosaic phenomenon appearsmeasures : change the Module control board


Y,Y- Driver B/D Symptom-wise Trouble Audit


Y-Sustain Board

Vs

Vsetup

Vsc

-Ve

+

+

+

-Vy

+

Er_up

Er_dn

Sus_up

Sus_dn

Pass_top

Pass_btm

Ramp_up

Ramp_dn SW

SE

SE

SCAN

NSCAN

FGND

FGND2

+15V(F2) 15V(F2)

15V(F5)

15V(F)

FGND5

SUS_UP15V(F)

15V(F)

FGND3

15V(F3)

FGND4

15V(F4)15V(F)

voltage LEVEL : Vs, Vsc, Vsetup, -Vy, Ve, +5V, +5V(F),15V, GNDFGND, +15V(F), FGND2, +15V(F2), FGND3, +15V(F3)FGND4, +15V(F4), FGND5, +15V(F5), VPP

I P MI P M SCAN DRIVER IC

(SN755864APZP)

YSUS_DN

Schematic Diagram of Y Board


Y-Sustain Board

Role of Y Board

Y0V

Set-up Scan Sustain

Set-upSet-up It is the process of charge form in internal wall and initial reset.It affects greatly wall charge form part.It is also called address section , confirms if there is X part data.(It is the section that determines existence of operation in sustainsection due to the first discharge.

ScanScan

It is for PDP Module brightness and graduation form. (ex. If it has more Sustain , it gets brighter and it indicates graduation and luminance.)

SustainSustain


Y-Sustain Board

the state sagging the voltage gradually and decreasing the formed wall charge in uniform cost without discharge

the stage preparing for Scan ,having uniform cost of wall charge in discharge space

< Scan stage >

the stage other line Scanned Nothing happens

< Scan stage >

the stage present line is scanned

External operation discharge occurs by the voltage authorized to polarity inversion and wall charge of Y polarity inversion part

< Sustain stage >

surface charge occurs between Y polarity inversion and Z polarity inversion by the voltage authorized to Y polarity inversion and wall charge of Y polarity inversion part

< Sustain stage >

surface charge occurs between Y polarity inversion and Z polarity inversion by the voltage authorized to Z polarity inversion and wall charge of Z polarity inversion part

< Erase stage >

the stage swelling the voltage gradually and dissipating all the wall charge

< Set up state >

the stage swelling the voltage gradually and increasing the amount of wall charge

Scan polarity inversion(Y)

A2 wave form

Common sustain polarity inversion (Z)

Data polarity inversion (Y)

180 V

180 V

280 V

70 V

70 V

180 V

180 V

Setup Scan ( Address ) Sustain Erase

Set downSet up

X

Y Z460 V 180 V

X

Y Z180 V 180 V

0 VX

Y Z0 V 180 V

0 VX

Y Z70 V 180 V

70 VX

Y Z0 V 180 V

70 VX

Y Z180 V 0 V

0 VX

Y Z0 V 180 V

0 VX

Y Z0 V 0 V

0 V

(1) (4) (5)(3) (7) (8) (9)

(9)(8)(7)(5)(4)(3)(2)(1)

(2)

the stage wall charge has

increased by scan stage

X

Y Z180 V 0 V

0 V

(6)

(6)


Y-Sustain Board

PDP vs. CRT

PDP

CRT

..... .....

brightnessbrightness

time

time

1/60 seconds

1/60 seconds

Mechanism of brightness(graduation) expressionDisplay Device

In the case of PDP, luminance control by current is difficult because of ultraviolet rays saturation by current and visible rays saturation to the ultraviolet lays . Discharge occurs all over the screen period and discharge frequency indicates luminous intensity.(luminance discharge frequency)

CRT indicates luminous intensity by electron beam intensity and one pixel brightens only once on one screen.


ONE POINT Check Method 42 KK

4. The control method of VR position such as Y-Board V-Setup voltage, VSC voltage, -Vy voltage and voltage

V-SET UP voltage

R89 both end CHECK

VY,VE voltageR8,R9 both end CHECK

VSC voltageR60 both end CHECK


The directions of Y-SUS and Driver Board 50 new,old model

Y-Board directions( new model, outmoded)

General type ModuleMN-50PZ40SMN-50PZ41

When Y-SUS is exchanged , Y-Driver Board can be changed and used at the same time

outmoded Y-SUS + Y-Driver PCB new model Y-SUS + Y-Driver PCB

6871QVH020A (Y-SUS)6871QDH030A (TOP)6871QDH031A (BOM)

6871QVH020B (Y-SUS)6871QDH030B (TOP)6871QDH031B (BOM)


Y Board ONE POINT SVC Guide

Flicker is bad Flicker is bad

Model name : All Models main Check : VS, V-SETUP,confirmation of voltageContent of badness : when there is wrong discharge effect and picture doesnt appearmeasures : change the Y-Board



Flicker is badFlicker is bad

Model name : All Models main Check : VS, V-SETUP,confirmation of voltageContent of badness : when there is wrong discharge effect and picture doesnt appearmeasures : change the Y-Board



Flicker is bad Confirm the voltage

Model name : MN-42PZ90main Check : confirm if 15V line supplied to module control board sags ( about 8~9V)Content of badness : when there is wrong discharge effect and picture doesnt appearmeasures : change the Y-Board and Z-Board at the same time


ONE POINT Check Method 42 KK

1. The contents to check surely before Z-Board check when screen darkness generates

1) Check the signal Line generated at Module Control Board

2) Check the Cable connected from Module Control Board to X-Board

3) Check the X-Board

4) Check the Cable connected from X-Board to Z-Board

2. The contents to check when voltage of Module Control Board 15V Line is sagged

1) Check the Module Control Board 15V Line Short

2) Check the Y-Driver Board Short

3) Change the Y-Board and Z-Board at the same time when 15V Line voltage is sagged about 8~9V. If only Y-Board is changed, badness can generates again.

3. Module changing, if UP Greade S/W is pressed at VSC Board, LED lamp isnt turned on and flickered gradually inside VSC Board


Y-Driver Board Inspection Point

. The screen isnt displayed at all Scan FPC wise.

1) If the screen isnt displayed Scan FPC wise, it may be the problems between relevant Scan FPC and Y DRV B/D

2) Check if the connector of Scan FPC corresponding to the part that isnt displayed is connected well with Y DRV B/D

3) Check if the Clock, Data signal of relevant Scan FPC input signal of Y DRV B/D is shorted with +5V or Ground.

4) Check if the output buffer of Y B/D related to relevant Scan Drive IC works normally.

5) Check if the signals are authorized well to relevant Scan Drive IC.

6) Check if the relevant Scan Drive IC Failed.

7) Check the PCB pattern.

examples of display type of screen

Normal part

The part that isnt displayed at all


CURTAIN BAR Trouble Types

In the case of Curtain Bar

When setting up to Y-Driver Board, DiodeCheck the Down terminal,it has a Short-circuit

In the case of wrong discharge

When setting up to Y-DriverBoard, Diode Check the Down terminal, it has aShort-circuit

Both end Diode Check (when Short-circuiting,it has a problem)


ONE POINT SVC Guide Y-Driver


Picture when signal is inputPicture when theres no signal

Model name : All modelsmain Check : Diode check the SUS-UP terminal and both ends of SUS-Down to Y-DriverContent of badness : when theres no sign,the position of curtain bar moves

according to OCD positionmeasures : Change to Y-Driver board shortContent of cause : Y-Driver SCAN Driver IC is bad, broken or short

- 85 -



Picture when signal is input Horizontal bar

Model name : All modelsmain Check : check the Y-Driver board connection state of module or an alien substanceContent of badness : horizontal BARmeasures : Remove the alien substance of Y-Driver board and module connection film

- 86 -


Specific part is black and has no picture Specific part is black and has no picture

Model name : All modelsmain Check : check the SCAN Driver IC of Y-Driver board and portContent of badness : horizontal BARmeasures : change the Y-Driver board


Z-Board Operation Principles

. The structure and operation of Z B/D circuitZ BOARD receives switch open and shut order signal from CONTROL BOARD and makes single SUS_OUT output wave form of high voltage.

The switches used for forming wave form are 6 kinds and POWER FET for high voltage-high current is used.

6 signals connected from CONTROL BOARD ( SUS_UP, SUS_DN, E/R_UP, E/R_DN, RAMP, Z_BIAS ) adds to the gate of each FET

through buffer(IC1) and FET DRIVER IC (HCPL314J). The rest of 4 switch excluding RAMP and Z_BIAS have high frequency

of drive and many current frequency and much heat, so it is module type with IC and this module has FET and FET DRIVER IC (IR2113S).

On the other hand,when SUS_UP and SUS_DN comes in HIGH at the same time,it is supposed to Shut-down the FET DRIVER IC (IR2113S) to prevent them from turning ON at the same time.

The condenser for E/R (Energy Recovery) is fixed for pin 16(ER_COM)of IC4,5,6 to raise energy efficiency,and coils are put in the passage to the SUS_OUT line to fix output ascending and descending roll off when E/R part switching.

The SUS_OUT output formed in Z BOARD is supplied to all the ROW of every panel equally.

Z Board BLOCK DIAGRAM

Vs(170-190V)

SUS_UP

SUS_DN

E/R_UP

E/R_DN

RAMP Connected to PANEL.

`

3

1-b

2-b

1-a

2-a

Vz ( Vs-12V )

Z_BAIS

4

Z_SUS_OUT


Z-Board Operation Principles

Schematic Diagram of Z Sustain Board

ER_UP

ER_DN

SUS_UP

SUS_DN

Vs

Vs

IPM for Sustain Pulse Generation and ER

The part for Ramp of Erase Pulse

L

SUS_OUT

LM317VzbVs

The part for Vzb

VR

Z bias

RAMP_UP

- 89 -Great Company Great People QAS 365QAS 365Great Company Great People QAS 365QAS 365Great Company Great People QAS 365QAS 365

When the screen is dark

. Though there is input signal pattern, screen brightness is dark on the whole.

1) Every input signal pattern is displayed but screen brightness is dark on the whole. In this case,

Z B/D may not work completely or the connection between controller B/D and VSC B/D may be unusual.

2) Check if the Controller B/D D1 LED is turned on and the state of connection line between VSC and

controller B/D .

3) Change the VSC or controller B/D.

4) Check if the power connector of Z B/D is connected.

5) Check if the connectors for signal of Controller B/D and Z B/D are connected well.

6) Without troubles , change the Z B/D or Controller B/D.

. In Full White screen, it looks like another color partly or generates wrong discharge.

1) Check if there are problems of Y B/D set up, set down wave form and roll-off adjustment.

2) Check if the roll-off of ramp wave form of Z B/D is normal.

3) Measure the output wave form of each B/D with oscilloscope above 500MHz and compare it with

the picture below.

setup roll-off of Y B/D is (Test-up:B/C[/]) VR1, setdown roll-off is(Test-down:D[]) VR2, ramp roll-off of Z B/D (Tramp:F/G[/])varies and adjusts VR1. Adjust as the notation contents of Label.

- Y B/D measure POINT : B41 ( Y_SUS_UP )

- Z B/D measure POINT : B39 ( Z_SUS_OUT )

0V

140us130us

110us

5us15us

12V

< Y sus_up wave form >

< Z sus_out wave form >


ONE POINT SVC Guide Z-Board


Insert to Z-Board and X-Board linking connector is badPicture is dark and wrong discharge(phenomenon)

Model name : MN-42PZ90main Check : Check the B+ terminal and cable connected to Z-BoardContent of badness : picture is dark and has too much noisemeasures : check the Z-Board and connector


Picture is dark and wrong discharge(phenomenon) Picture is dark and wrong discharge(phenomenon)

Model name : All modelsmain Check : Check the B+ terminal and cable connected to Z-BoardContent of badness : picture is dark and has too much noisemeasures : check the Z-Board and connector



Check the port

50 KK 42 KK

. Contents to check when picture is dark1) check the cable connected from module control board to X-Board

2) check the X-Board

3) check the cable connected from X-Board to Z-Board


5. Image Sticking Audit


matters connected with after-image prevention function

1. The cause of after-image generation: When a fluorescent substance keeps radiating in same color in pixel(that is, when freeze picture continues) due to the radiation property of PDP Module, the color remains after changing the picture because of the Burning of the color.

2. After-image prevention function

1) change : It prevents from radiating of same color in one pixel by changing the whole screen in the direction of (right-right-down-down-left-left-left-up-up) at 2 minutes intervals. On this occasion, it moves 4 pixel when moving left and right, 2 pixel when moving up and down in pixel unit.

When it is initial location of the first screen ( 0, 0 ) direct practice the change function ( 4,0 ) : change of right 4 pixel after 2 minutes ( 8, 0 ) : change of right 4 pixel after 4 minutes ( 8, 2 ) : change of down 2 pixel after 6 minutes ( 8, 4 ) : change of down 4 pixel after 8 minutes ( 4, 4 ) : change of left 4 pixel after 10 minutes ( 0, 4 ) : change of left 4 pixel after 12 minutes ( 0, 2 ): change of UP 2 pixel after 14 minutes ( 0, 0 ): change of up 2 pixelIt is repeated until cancellation of change function

2) inversion : It displays original brightness value

3) removal : After generating after-image, it displays the whole screen in white and expresses all the Pixel(R,G,B) in maximum bright then can remove the after-image by erasing the Burned color

4) ISM : It prevents pixel from burning by decreasing the brightness automatically and slowly in PDPModule when the freeze picture keeps over 5 minutes. The darker the brightness of screen is ,the less the after-image generates, and ISM function built in Module is impossible for users tocontrol.


ISM ( Image Sticking Minimization )


Generation of After-image such as Letters and Logo in screen

X CANVAS

After-image remains due to watching same image for a long time (letters and others)Normal screen state

CANVASX

There is ISM Mode as an after-image prevention function, so it is programmed to make dark the screen in the caseof long time freeze picture . But it is for the whole animation screen, so it cant prevent partial letters and logoafter-image. Therefore pay attention not to display same image for a long time especially take notice not to displaysame image continually when displaying at the stores. (Take notice it is dealt with compensation when after-image generates )

Press the ADJ Key of remote control and connect to SVC Mode , Select WHITE at HEAT RUN then make HEAT RUNas much time as generation time of after-image. (when the after-image is intense, it cant be recovered )


Matters connected with after-image prevention

When using change function

When using inversion function


Module comparison

1. SD3 and SD4

- They are same Panel in structure but differ in drive method and set voltage.

- SD4 is low voltage model and lower voltage than general SD3 is set. In early stages it was developed in much low voltage but the voltage has been swelled compared to initial development goal because there are problems in varying and making only circuit and wave form with same panel

in conclusion , SD4 is the model developed for low voltage drive. Vs Va V setup -Vy Peak remark

SD3 170 ~ 185 60 ~ 75 210 ~ 240 -60 ~ -90 650SD4 170 ~ 185 35 ~ 45 210 ~ 240 -60 ~ -90 650

present Spec( 35 ~ 50 )

2. KK Model and general model

- KK model means each Contrast and Peak luminance is 1000 and it is the development goal.

- It has structural difference.

asymmetryT structure Close structure Xe : 8%KK model

Increased Preparing for

Mass production

symmetryStrips structure Strips structureXe : 5%General model

voltagedam ratioITORib structureGas

- Because KK model gets higher Xe component ratio, drive voltage increases in general.

- Image Streaking or after-image property may look lower than present model due to high Contrast and luminance, but it proved to have relative little difference comparing to general and other models.


Global Quality Information (GQI)

Set Model MT-42PZ44 Quantity 1 No. : 000-000-0000

Set Serial No. 301KT00034

Module Model PDP42V51330

Vertical Line ( R , G , B Pattern) Vertical Bar ( R , G , B ) Horizontal Line ( R , G , B ) Horizontal Bar ( R , G , B ) No Raster Cell Defect External Defect Mal-discharge etc

Module Serial No. 312K142V5009368 Detail :

Country Netherlands

Customer purchase date 2004 / 04 / 05

Issued date 2004 / 04 / 30

PCB B/D defect only

Serial No. X-L-TOP(UP) X-C-TOP X-R-TOP PSU X-L-BTM(LOW) X-C-BTM X-R-BTM DC-DC Y-SUS Y-DRV-TOP Y-DRV-BTM CTRL Z-SUS etc

No.: the last line number of white label on B/D

Issued place Office or living room

Condition in use Use as monitor

Detailed repair records and

the resultincluding date

Replace Control Board( 2004 / 04 / 06 ): Not improved

COF defect only

Serial No.

Ex)Long2-4IC Fail or Register Fail

No.: the number of white label on inside COF

Pictures of Symptom

Symptom

2-1 2-2 2-3 2-4 2-5 2-6 2-7Long

Long1-1 1-2 1-3 1-4 1-5 1-6 1-7

1-1 1-2

Short 1-31-4

Back Side

Tip2-1

Short2-4

Defect part

White labelGreat Company Great People

EXAM

PLE

Plasma Display Panel structureAC-PDP discharge theoryAC-PDP discharge theory

LG Plasma Training Manual

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