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PDP(Plasma Display Panel ) Display
1. What is Plasma? 2. What is Plasma Display Panel(PDP)? 3. LG PDP Display(MNT & STB) 4. SVC Precaution 5. One Point SVC Guide
LG Electronics DND Division
1. What is Plasma?
Plasma ?
Plasma is by far the most common form of matter. Plasma in the stars and in the tenuous space between them makes up over 99% of the visible universe and perhaps most of that which is not visible. Plasma consists of a collection of free-moving electrons and ions - atoms that have lost electrons. Energy is needed to strip electrons from atoms to make plasma. The energy can be of various origins:thermal, electrical, or light (ultraviolet light or intense visible light from a laser).
With insufficient sustaining power, plasmas recombine into neutral gas.
Solid Liquid Gas Ion, Electron : The 4th State of Matter
Plasma can be accelerated and steered by electric and magnetic fields which allows
it to be controlled and applied. Plasma research is yielding a greater understanding of the universe. It also provides many practical uses: new manufacturing techniques, consumer products, and the prospect of abundant energy.
Ex.) Lightning, Aurora, Nebula, Flames, Neon Sign, Solar core ....
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Plasma ?
Plasma -The 4th State of Matter
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2. What is Plasma Display Panel(PDP)?
(1) How does it work? (2) The Structure and mechanism of PDP (3) Flow chart of a PDP fabrication (4) Advantage of PDP Display (5) Comparison of Display Devices (6) Display Product Segments (7) Usage of PDP Display
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2.What is Plasma Display Panel(PDP)?
(1) How does it work?
Plasma display panel is the latest display technology and the best way to achieve flat panel displays with excellent image quality and large screen size that is easily viewable in any environment. PDP is an array of cells, known as pixels, which are composed of 3 sub-pixels, corresponding to the colors Red, Green and Blue. Gas in a plasma state is used to react with phosphors in each sub-pixel to produce colored light (red, green or blue). These phosphors are the same types used in Cathode Ray Tube(CRT) devices such as televisions and standard computer monitors. You get the rich, dynamic colors that you expect. Each sub-pixel is individually controlled by advanced electronics to produce over 16 million different colors. All of this means that you get perfect images that are easily viewable in a display that is less than 6 inches thick. Sustain(Z) Electrode Scan(Y) Electrode Gas Discharge
YUV Generate
(MgO)
Visible Illuminate
Display
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(2) The structure and mechanism of Panel
< Upper Panel >
ITO
Electrode Barrier Rib Electrode
< Lower Panel >
BUS
W/B (MgO)
Protection Dielectric Electrode Fluorescent
Visible Light
ITO Electrode Bus Electrode
Fluorescent (R,G,B)
Plasma
UV light
Barrier Rib
Address Electrode
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Glass
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(3) Flow chart of a PDP fabrication
Front Glass
Sustain Electrode (ITO)
Rear Glass
Address
Electrode
(Ag, Cu) (PbO)
Dielectric Layer Bus Electrode (Ag,Cu, Au) White Back (Screen Printing)
Dielectric Layer (PbO)
Barrier Lib (130) (Sand Blasting) Phosphor layer (R, G, B)
Protection Layer (MgO)
Sealing
Exhausting & Filling Gas Aging PDP Panel
(Xe+He/Ne/Ar)
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(4) Advantages of PDP Display
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(5) Comparison of Display devices
Rear Projection
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(6) Display Market Segments
PDA/Car Nav. Potable TV
Notebook PC
PC Monitor / TV
Public Screen
Jumbo Screen
FED PDP EL LCD CRT Projector Projection (Rear CRT/LCD)
10"
20"
30"
40"
50"
60"
70"
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(7) Usage of PDP Display
=> Home Theatre, A digital "poster" for the showroom, Visual guide or digital art display, Information display in reception areas, Business presentations, Easy-to-see monitor for fitness club
Home Theatre
Information Board
Conference Room
Commercial Shop
Public Display
Sports Center
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3. LG PDP Display(TV & MNT)
(1) PDP Display System Structure(1)
Interface between RN-BA10(Korea/USA) MN-40PA10 & MP-40PA10 PDP Monitor and other AV machines
RGB-PC input(VGA,SVGA) RGB-DTV(480P/720P/1080i)
External Input (Right-Audio Left-Video Component Audio
Audio Input Right - Left RGB-PC/DTV
Y, PB, PR
COMPONENT ( 480i /480P/720P/1080i ) DVD / DTV INPUT
DVD ( 480i / 480P )
Composite Video (Input output)
Set Top Box ( HD STB )
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MN-40PA10 (PDP) connection
MN-40PA10 RN-BA10(Analog STB)
RGB-PC input (VGA, SVGA)
PC
RGB-DTV input (480P/720P/1080i) RGB INPUT/CONTROL Audio OUTPUT Right/Left 25Pin D-Sub.
RGB-PC / DTV output
COMPONENT 2 ( 480P/720P 1080i )
DVD/DTV INPUT
Set Top Box ( HD STB )
Output (Right-Audio,Left-Video)
S Video input
ANT IN
Component 1 ( 480i input )
DVD
input1,2 (R-voice, L-image)
VCR
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(2) Accessories(Option Items)
Wall Mount(Fix) (AP-40WA10)
Wall Mount(Tilt)(AP-40WA20M)
Desk Top Stand(AP-40DA10)
Floor Stand(AP-40FA10) Floor Stand(Moving)(AP-40FA20M) SPEAKER(AP-40SA10) * There are Ceiling, Pole & Rack type as well as Above accessories(Refer to Catalogue) TOP in Digital 14
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Description
Model Name
Description Ceiling Mounting Bracket
Model Name
PLASMA Monitor
MN-40PA10
AP-40CA10
Desktop Stand
AP-40DA10 Speaker AP-40SA10
Wall Mounting Bracket
AP-40WA10 Speaker Stand AP-40SA10D
Tilt Wall Mounting Bracket
AP-40WA20M Floor Type Speaker Stand AP-40SA10F
Floor Type Stand
AP-40FA10
PDP Tuner
RN-BA10
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(3) External Connection Terminals
Terminal RGB IN/Control External SPK AC Input
Cord Length 3000 mm 5000 mm 2500 mm
(+) R (-) (+) L (-)
R
L
RGB In/Control
1.40"/42"
R A L Video Y
PC In/DTV In 1 (RGB/HV)
R A L Video External Input
Y
Cb/Pb Cr/Pr
AC Input
Ext. SPK(8)
Audio IN
DVD In/DTV In 2
2. 60"
Cb/Pb Cr/Pr
External Input
DVD In/DTV In2
PC In/DTV In 1 (RGB/HV)
R
L
RGB In/Control
S Video
(+) R (-) (+)L (-) Ext. SPK(8)
AC Input
Audio Input
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(4) Fixing Points
4-1)MP-40PA10(40" PDP)
Wall Mount Fixing Points
- Fixing Points : Fix with M5 screws (3,4,5,6,7,8 ; 6 points) - SPK Fixing Points : Fix with 3 tapping screws (1,2,9,10 (2 points each); 8 Points)
1 3 6
9
4
7
5
8
2
10
D/T,F/S Fixing Points
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4-2)MN-60PZ10(60" PDP)
Pre-Fixing Point
7
12
- Fix with M8 Screw - Total 16 fixing points ( ; Wall Mount Holder or FLOOR STAND Fixing) - 1,3 4,6 : For SPK
1
4
Fixing Points
8 13
2 9 10 14 15
5
3
6
11
16
D/T,F/S Fixing Points
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(5) EXPLODE VIEW
5-1)MONITOR PART 9 8 7 10 6 5 4 3 2 NO. 1 2 3 4 5 6 7 8 9 10 1 TOP in Digital 19 Filter Supporter,Filter Module Assy Line Filter PCB ASSY, VSC PCB ASSY, POWER Supporter,Vertical Back Cover Assy Plate, Rear A/V 6348Q-A002A 3501V00028A 6871VMM602B 3501V00027E 4980V00164B/C 3809V00212C 3301V00005A NAME Cabinet Part Number 3091V00288C 3790V00266B
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5-2)SET TOP BOX ASSY
5
4 3
NO.
1 2 3 4 5 NAME Panel,Control Panel, Front Case, Bottom Case, Rear Case, Top Material ABS HIPS SECC 1.0t SECC 1.0t SECC 1.0t Part Number 3720V00080B 3720V00079A 3110V00101B 3110V00111C 3110V00102A
1
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5-3) PSU & VSC Board
VSC (Video Scan Converter)
PSU (Power Supply Unit)
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(6) Inter-Connection Guide
PDP MODULE (Upper X-Board)
6p
CON302
6p
CON301
4p
8p 8P CON300 PDP Control 40P Board 12P CON102
CON100
Z-Board (Sustain) 8P CON102 12P CON101
CON3 CON2
Y-Board (Scan)
CON304
6p
PDP MODULE (Lower X-Board)
7p
P003A
6p
CON303
P801 P802
POWER SW.B/D
Local Key Board Local Key Board
8P P801 6P P814 6P P813 4P P810
4p
8p 6P P812 6P P811 8P P807
P802 P803
7P P004A
6P P002A
VSC
40P PD501
POWER
2P
SPEAKER
P006A P007A 4P
4P 4P P007A
12P P005A 7P
P003A
12P P809 7P P815 2P CN801
EMI pack
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(7) Block Diagram
DATA ( 41PIN )
R/L
PDP Module
Image Processing Logic & ScanController
RGB(24bit) VSYNC HSYNC BLANK DISPEN
+5V ST 5V +9V +32V +5V +15V
Video V/R/L Scan Converter DVD & Audio Amp. Ext. I/F PC
(Spk.)
ADDRESS DRIVER (X)
VA
(VSC)
Control & RGB/HV, RL(25pin)
ANT
(Control)
+5Vcntl
VS(180V) VA(80V) V set-up (275V)
+5V +15V
COMMON SUSTAIN DRIVER
(Z)
PANEL 640XR,G,BX480
SCAN SUSTAIN DRIVER
(Y)
+5V +15V
V/R/L DVD PC DTV PC/DTV
TD-620 Set Top Box
Power Supply (AC-DC, DC-DC)
VS VSetup
Vsb
VS
VSb(75V)
+5V
+5vdrv +15vdrv
ADDRESS DRIVER (X) VA
+15V
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EMI Filter
AC Input
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MP--40PA10 VSC Board
DS101 D-sub 25 P601 L/R DS102 1 CVBS (A) Y,Cb,Cr P101 V/R/L 3 (A) 8 8 LU0-7 Comb Filter & Video Processor Separates CVBS signal into Y,U &V AV/DVD/DTV2 STB/PC/DTV1 P102 DVD
STB-POWER VSC DET/POWER HDSTB_DET STB_SCL/SDA ANA_STB_DET
IC002 24C08 4 7 IC001 IC001 M37270 M37270 EEPROM EEPROM µ-Com µ-Com
OSD_HS/VS 2 OSD_R/G/B/YS IC402 2M SDRAM A0-10 11 16 D0-16 IC403 16 2M
SDRAM
HS/VS_OUT
2
IC501
74F541
2
STB-R/G/B/HS/VS(A) 5
PVS/PHS_OUT
Display Processor & Scan Rate Converter (Format Converter) Converts Interlace into Progressive 15KHz 31KHz(2H, 1V)
D16-31
IC502 8 DOR0-7
8
74F541 PAR0-7
PC-R/G/B/HS/VS (A) 5 DTV-Y/Pb/Pr (A) 3 TV-Y/U/ V/HVs (A) 4 IC204 IC204 SDA9410 SDA9410 De-interlace De-interlace & & D/A D/A 100Pin 100Pin CHR0-7 (D)
15
IC401 IC401 MX88L284 MX88L284 3X2M 3X2M Scan converter Scan converter 208Pin 208Pin 3X8 (R/G/B)(D)
PD501 (41Pin) 8 DOG0-7 IC503 8
74F541 Buffer PAG0-7
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D-sub
I²C Bus CAX-HS/VS 2
8 DOB0-7 8 IC504 PAB0-7
74F541
IC203 IC203 VPC3230 VPC3230 Decoder Decoder 80Pin 80Pin
IC303 IC303 CXA2101AQ CXA2101AQ
Video&Chroma Video&Chroma
80Pin 80Pin
IC304 IC304 THS8083 THS8083 100Pin 100Pin
Chip for flat panel display application VGA XGA(scale up/down)
PDP Module
3 CXA-R/G/B(A )
Multi-Component Processor (Baseband Video Signal Processor) Outputs Analog R,G & B signal from STB,PC,DTV & TV signal Triple 8Bit, 80MSPS, 3.3V Video&Graphic Digitizer with Digital PLL Generates D-R/G/B(24bit) signal from Analog RGB
IC604 LA7222 (Audio S/W)
IC602 IC602 CXA2022S CXA2022S
(Tone Control) (Tone Control)
IC603 IC603 LA4282 LA4282
Audio Amp. Audio Amp. (12Wx2) (12Wx2)
Lout Rout
P007A (SPK. Jack : 8) 10x10Wrms
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VSC Board Block
PC-R/G/B/HS/VS Y/Pb/Pr ( 480 p ) TV-Y/U/V/HS/VS CVBS IC203 IC203 VPC3230 VPC3230 Decoder Decoder 80 Pin 80 Pin Y,Cb,Cr ( 480 i ) IC204 IC204 SDA9410 SDA9410 De-interlace & De-interlace & D/A D/A 100 Pin 100 Pin LUM0-7 CHR0-7 LLC1/2
3X8 ( R/G/B ) ( D ) IC401 IC401 MX88L284 MX88L284 3X2M 3X2M Scan Converter Scan Converter 208 Pin 208 Pin
IC303 IC303 CXA2101AQ CXA2101AQ Video & Chroma Video & Chroma 80 Pin 80 Pin
IC304 IC304 THS8083 THS8083 100 Pin 100 Pin
PD501 PD501 (41Pin) (41Pin)
3 CXA-R/G/B Heat-Run pattern. Outputs Blue/Red/ Green/White Pattern with 225 steps PDP Module
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42"/60" New VSC Board
MONOSTABLE MULTIBIB. (74LS123) RGBHV 5 SOG_OUT RGB 3 CLAMP_AD MEMORY (6M-BYTE)
VIDEO SWITCH
RGBHV 5
8bit 135Mhz ADC(3), PLL(3), PIP,Gamma, High order 3'rd generation Scaling
A/D CONVERTER
3 H/V SOG H
(M52758FP)
(CXA3516R)
PLLH/CLK 2
SCALER (JAG200)
V H 4 H/V/DE/CLK
TMDS TX (SII150)
8
21P
Y/C
CVBS
RGB 3 H/V 2 DISP_EN
YCbCr/ YPbPr
COLOR DECODER (VPC3230D)
2 YUV
H/V/ FIELD/ LLC1 4
Digital Component Video De-Interlacer/Line Doubler
5 RGBHV H
DEINTER -LACER (FLI2200)
Digital Video Enhancer (FLI2220)
V 5 H/V/CLK/ HBLK/VBLK
EPLD (GEN. CLAMP)
Comb Filter Video Processor high quality video front -end, which is targeted for 4:3 for 16:9, 50/60 & 100/120Hz TV sets, color decoder PAL/NTSC/SECAM PIP processing
COLOR CONTROL & VIDEO SWITCH (CXA2101Q)
Clamp
MEMORY (4M-BYTE)
H/V 2
Y,U,V,H,V
5
Y,Pb,Pr(MNT) 3 Y,Pb,Pr(STB) 3
AUDIO
R
(74HCT373) AUDIO SWITCH (LA7222) ROM (AT29C010)
PORT EXP (M62320X4)
L
AUDIO AMP LA4282 (L & R)
MICOM
EEPROM X2416P
Multi-Component Processor (Baseband Video Signal Processor) bipolar IC which integrates baseband signal processing, RGB signal processing and 4 video switching systems (including HV sync signal processing) using YCbCr inputs developed for multi -scan TV & configuring high-end TV systems
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Power Supply Unit (40")
A
Vsc TRANS
HEAT SINK
VR 2 806 Vsc
H
CEMENT
B
CEMENT
VR 3 805 CEMENT Vset 4 VR CEMENT 804 Vs Vs
CEMENT
Vs INDUCTOR TRANS
Vsetup TRANS
Vs TRANS
C
Va Inductor
I
D
5V Inductor
Drive
E
1
VR803 (Va)
Multi Inductor
A: Vsc(75V)Trans B: Vsetup(275V) Trans C: Va Inductor Trans D: 5V Inductor Trans E: Multi Inductor Trans F: Multi(5V/15V/12V/30V/Va)Trans G: St-By(5V/15V)Trans H: Vs Inductor Trans I : Vs(180V)Trans J: PFC Inductor Trans
HEAT SINK
HEAT SINK
VR802 (5V Adj.) VR801 (32V Adj.)
HEAT SINK
MULTITRANS
F
HEAT SINK Multi Drive
J G
ST-BY TRANS
HEAT SINK
VR802 : Va adjust(typ.70±5V) ± VR804 : Vs adjust(typ.180±5V) ± VR805 : Vsetup adjust(typ.275V) VR806 : Vsc adjust(typ.75V)
HEAT SINK
TRANS PFC Inductor
CEMENT
AC In
EMI(Line Filter) Pack
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EMI
Power Switch
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POWER BLOCK
ST-BY STR-G6100 Rectifier DIODE Relay PFC MC33262 Rectifier DIODE RCC Type TL494 Va 75V 5V 15V
AC Input 90Vac~265Vac
380V Forward Type TL494
5V 15V 12V 30V
Half-Bridge Type TL494
Vs 180V
RCC Type TL494
VSC 75V Vsetup 275V
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(8) Basic Structure of Optical Filter(Screen Filter)
AR(Antireflection) Film PET Film with Multilayer sputter-coatings Multilayer sputter-coating for EMI shielding & NIR (Near Infrared Light)blocking Adhesive layer AR(Antireflection) Film Electrode(Bus Bar) Features of Optical Filter
-. Reduce Electromagnetic Radiation and NIR(Near infrared light) emission. : EMI regulation(FCC A-class for Industry use, B-class for consumer use) -.Transparency Control(40 ~ 70%), ex) FCC -A(sheet resistance = 2.5~3.5W) @ 60% , FCC -B(sheet resistance = 1.1~1.5W) @ 45% -.Color Control : Color Temperature & Color Reproducibility control -.Reduce Surface Reflection -.Enhancement of Contrast -.Protection of PDP panel Best in DigitalBest Technology TOP LG with 29
Adhesive layer Tempered Glass Colored adhesive layer
Frame Printings(Screen Size)
* EMI shielding : Mesh Fiber type & Film coating Type
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(9) PDP Tuner(Set Top Box)
SMPS Board Interface Board
RT-BA10(N-EU Multi) RZ-BA10(EU Multi) RN-BA10(NTSC) RP-BA10(Latin America) Top View
Back Panel(Signal Input)
Main Board
Inside
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(10) RT-BA10( STB ) Inter-Connection
STB-CONTROL B/D
12P PF01
P00112 P
Power Switch
STB - MAIN
P402 P403 Tuner 7P 12P P401 10P
P00210P
10P P810S
STB - POWER
P003 8P 8P P870S
12P PX002
10P PX001
7P PX003
STB Interface B/D
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(11) STB Block Diagram(1)
TV Audio(SIF) TUNER TUNER TV Signal (CVBS) DVD in (Y,Cb,Cr) (R,L) A/V 1 3 (VRL) 2 2(Y/C) SVHS DCF-C/Y IC 201 IC 201 CXA2069Q CXA2069Q 64pin 64pin 2 AV-L/R IC 601 IC 601 MSP3401 MSP3401 80pin 80pin KIN DTV2 (R,L) 3 MNT-L/R/V 7input/3output Single chip multi-standard wideband video Amp(20MHz, -3dB) Sound processors(Dolby Virtual) Y/C mix circuit TV A/V switch featuring I2C BUS Mono/Stereo/Bilingual DTV2 in (R,L) (Y,Pb,Pr) PC R/G/B HS/VS ICX 001 ICX 001 BA7657F BA7657F 2 5 P401 SDA-HS/VS/U/V/Y IC 401 IC 401 3 CXA2101AQ CXA2101AQ (DTV 2)Y/U/V 80pin 80pin 5 DTV-R/G/B HS/VS P402 Multi-Component Processor Analog R/G/B P403 R/L CXA2069Q (pin 23/25) R/G/B Y/U/V R/G/B IC 602/3/4 IC 602/3/4 SRS block SRS block (option) (option) 3 IC 001 IC 001 M37272 M37272 u-COM u-COM KEY-1 DCF(3D) DCF(3D) (Digital Comb Filter) (Digital Comb Filter) 3 1 DCF-VIN 2 TV-L/R Y/U/V 2 Y/C 8 IC 701 IC 301 IC 701 IC 301 CHROMA0-7 LGTV1001 VPC3230 LGTV1001 VPC3230 8 64pin 80pin 64pin 80pin LUMA0-7 Comb filter video processor TV Digital Y/Cr/Cb Multi-standard color decoder A/D converter 8bit UVin 8bit UVout 8bit Yin 8bit Yout Improve the Image Format converter Interlace scanning to Progressive scanning 3 SDA Y/V/U 2 IC 302 IC 302 SDA- SDA9410 SDA9410 HS/VS 100pin 100pin 8 C0-7 8 Y0-7 SDA-U/V/Y
3 OSD R/G/B/YS 1 S-MUTE
3 W/F-OUT OUT-L OUT-R P003 P003
A/V 2
3 (VRL)
3 SCL_A, SDA_B PC/DTV
(Woofer Spk. Jack : 8) 15Wrms
KOUT 3
MNT OUT
PDP MODUAL
2 SCL-A SDL-A SCL-A SDL-A 2 PC-HS/VS 3 CXA R/G/B IC 402 IC 402 BA7657 BA7657 24pin 24pin 1 CXA-PC 5 R/G/B/HS/VS PC-R/G/B 2 CXA HS/VS Input select switch for high definition display Internal broadband RGB s/w IS 501 (25Pin Cable)
Interface Board
DTV 1 IN
DTV RGB/HV PC RGB/HV
3
PC IN
DTV R/G/B HS/VS
PC Audio(Stereo) PC/DTV-OUT
PC DTV PC-R/L
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(12) Function Descriptions
Parts Y-Board ( Scan Driver ) X-Board ( Address Driver ) Control Board DC/DC-2 Board FPC(Flexible Plate Circuit) ACF
(Asymmetric Conductive Fundamental)
Function
Connected to Scan(Y) electrode and FPC to operate Scan and Sustain
Z-Board(Common Sustain Driver) Connected to Sustain(Z) electrode and FPC to operate Sustain
Connected to lower address(X) electrode and FPC to operate Address Generates and distributes display data and driver timing of Video and Audio signal from external input to X,Y,Z Board. With input voltages-Vs,Va,Vcc, converts into Circuit login voltage(5V), Va,Vsc,Vs & Vsetup and distributes to X,Y,Z Board. Connect line to line with PCB and pattern of Panel Charged material between Panel and FPC. Used for heat pressing material to connect FPC and pattern of Panel(Glass) and constituted by conductive metal(Ni,Au,etc) and thermosetting high polymer organism powder.
Heat Sink
Electrical parts are attached to absorb and radiate heat generated at Panel when operating.
COF ( Chip On Film )
Unifying IC chip on the PCB and FPC, and it realizes simplified structure and miniaturization.
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(13) Definition of Defect
A. Definition Item
Dark Dot Flashing Cell Defect Non-extinguishing Cell Defect High Intensity Cell Defect
Definition
Non lighting Cell Defect Toggles On/Off Turn on always Brighter than other cell at same color or display other color
Cause
Foreign material at Cell or structural defect
B. Specification A zone
Dark Dot N 2 [cell/scn] Neighboring 2 Cells 1 Neighboring over 3 Cells : 0 N 2 [cell/scn] Neighboring 2 Cells 1 Neighboring over 3 Cells : 0 N 2 [cell/scn] Neighboring 2 Cells 1 Neighboring over 3 Cells : 0 N 0 [cell/scn]
B zone
N 4 [cell/scn] Neighboring 2 Cells 1 Neighboring over 3 Cells : 0 N 4 [cell/scn] Neighboring 2 Cells 1 Neighboring over 3 Cells : 0 N 4 [cell/scn] Neighboring 2 Cells 1 Neighboring over 3 Cells : 0 N 0 [cell/scn]
Bright Dot
Flashing Dot High Intensity Dot
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SVC Precaution
Lift up the right and left of X-BOARD CONNECTOR.
1) X - Board COF Connector separation
Lift up X-BOARD CONNECTOR and separate COP CONNECTOR by pulling up.
When you handle COF CONNECTOR, don't pressure. First release LOCK and separate. If COF CONNECTOR is damaged, you should replace MODULE ASS'Y. So, be aware of this!!
COF Connector
Warning Warning When you exchange X-Board, first you should separate COF When you exchange X-Board, first you should separate COF Connector. Be careful to handle it. Connector. Be careful to handle it. COF Connector is attached to Module. When COF Connector is COF Connector is attached to Module. When COF Connector is broken, Module ASS'Y must be replaced a new one. broken, Module ASS'Y must be replaced a new one.
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2) X - Board Connector separation
Lift up each edge of left/right.
Lifted condition
Be careful to handle LOCK or it can be broken. When LOCK is broken, replace a new X-BOARD.
Warning Warning It's 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
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3) Y - Board COF Connector separation
Pull the white LOCK as shown in arrow
Pull the white LOCK as shown in arrow.
Separate COF CONNECTOR by pulling in the left.
Warning Warning Be careful to handle LOCK and COF Connector. When LOCK part is damaged, you should replace a new Y-Board. In case of COF Connector, Module Assembly.
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4) Z - Board COF Connector separation
Separate the fixed Screw of Z-Board. Pull out Lock as shown in arrow. Warning Warning
Condition in Lock part is pulled
Pull COF Connector as shown in arrow. It's easy to separate COF on condition that Z-Board Screw is separated. In case Z-Board is assembled, it's really hard to separate.
COF Connector
Be careful not to tear COF Connector. If COF Connector is torn, replace a new Module Assembly
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5) Connector separation Guide
Push LOCK and pull out
PUSH
PUSH
PUSH
PUSH
PUSH
PULL
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6) Control Board & VSC Board Connector
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7) Gas injection (Sealing up) condition
Be sealed up after gas injection
Be sealed up after gas injection
Warning Warning
Be careful to handle the sealed-up part after gas injection. If it is broken, the gas escapes. So, replace the Module.
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One Point SVC Guide
Power is On and off 2~3 minutes. Power is On and off 2~3 minutes. (Protection) (Protection) P301 Connector Open Check. P301 Connector Open Check. OK
Power off in 2 ~ 3 minutes(Protection)
X --Board Top Right Change. X Board Top Right Change. OK
P302 Connector Open Check P302 Connector Open Check
X --Board Top Left Change. X Board Top Left Change. OK
P303 Connector Open Check P303 Connector Open Check
X --Board Bottom Right Change. X Board Bottom Right Change. OK
P304 Connector Open Check P304 Connector Open Check
X --Board Bottom Left Change. X Board Bottom Left Change. OK
P102 Connector Open Check P102 Connector Open Check
Z --Board Change. Z Board Change. OK
P3, P2 Connector Open Check P3, P2 Connector Open Check
Y --Board Change. Y Board Change.
P005, P003 Connector Open Check P005, P003 Connector Open Check
PROTECT operation; PROTECT operation; When the load voltage is short. When the load voltage is short. When each voltage doesn't work (in general) When each voltage doesn't work (in general)
OK
VSC- Board Change. VSC- Board Change. OK VSC --Board Change. VSC Board Change. Sound Output IC Short Check Sound Output IC Short Check
P006 Connector Open Check P006 Connector Open Check Power Board Change Power Board Change
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LG Electronics
Power off in 2 ~ 3 minutes(Protection)
L813 Cold Solder
Symptom : As soon as the power on, it's off in 2 - 3minutes. (PROTECT operation) Cause : No VS voltage L813 Coil cold soldering.
Check Check Open the Connector connecting to each Board to check the power is off. if each Board is same, check the Power Board and voltage.
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LG Electronics
ADD BAR inspection and repair
Press the ADJ KEY and check the position of add bar by changing WHITE or RED or BLUE or GREEN
HEATRUN : WHITE
Top Right
Top Left
Bottom Right
Bottom Left
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 CONNECTOR between 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 and CONTROL BOARD. And if you can't find defect, check CONTROL.
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LG Electronics
Symptom : B color 1 Address line Open Cause : Dented COF
COF is dented
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LG Electronics
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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LG Electronics
Symptom
Causes
Countermeasure
If 15V line voltage reduces below 14V, Mis-discharge occurs and power off because of protection circuit.
Replace PSU (Power Supply Unit) and defective X-Board.
Defective X-Board
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.
Check Check If when Power on, screen shows like above and turn off in 2 seconds, check if turning off or not by disconnecting all X & Y boards.
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LG Electronics
Symptom
Cause
Countermeasure
No 5V supply to Top right X-Board.
Connect 5V line
The top left part of screen is broken (Top Right X-BOARD)
Check Check Check Top right X-BOARD 5V.(If 0V, it happens) Check 5V line from SMPS to X-BOARD.
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LG Electronics
Symptom
Cause
Countermeasure
No Va(70V) supply to Top right X-Board.
Connect 70V line
Pinkish screen in the top left. (Top right X-BOARD)
Check Check Check Top right X-BOARD Va(70V).(If 0V, it happens) Check 70V(Va) line from SMPS to X-BOARD.
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LG Electronics
Symptom
Cause
Countermeasure
No 12V supply to Top right X-Board. No Va(70V) supply to Top right X-Board.
Connect 12V line
Connect 70V line
The 3/5 top left in the screen is blank (Top Right X-BOARD) Check Check 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.
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LG Electronics
Symptom
Cause
Countermeasure
No 12V supply to Top left X-Board. No Va(70V) supply to Top left X-Board.
Connect 12V line
Connect 70V line
The 3/5 top right of the screen is blank. (Top left X-BOARD)
Check Check 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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LG Electronics
Symptom
Cause
Countermeasure
P1 COF connector on Top left X-Board is open.
Reassemble it
Pinkish screen in the 1/5 top right (Top left X-BOARD)
Check Check Check the contact point and Locking of P1 on Top left X-BOARD.
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LG Electronics
Symptom
Cause
Countermeasure
No 5V supply to bottom right X-Board.
Connect 5V line
The 3/5 bottom left of screen is broken. (BOTTOM RIGHT X-BOARD)
Check Check Check Bottom right X-BOARD 5V.( If 0V, it happens ) Check 5V line from SMPS to X-BOARD.
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LG Electronics
Symptom
Cause
Countermeasure
No 12V supply to bottom right X-Board. No Va(70V) supply to bottom right X-Board.
Connect 12V line
The 3/5 bottom left of the screen is Blank. (Bottom Right X-BOARD)
Check Check Check Bottom right X-BOARD 12V.( If 0V, it happens ) Check 12V line from SMPS to X-BOARD.
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LG Electronics
Symptom
Cause
Countermeasure
No 5V supply to bottom left X-Board.
Connect 5V line
The 2/5 right of the screen is broken. (Bottom left X-BOARD)
Check Check Check Bottom left X-BOARD 5V.( If 0V, it happens ) Check 5V line from SMPS to X-BOARD.
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LG Electronics
Symptom
Cause
Countermeasure
No 12V supply to bottom left X-Board.
Connect 12V line
The 2/5 right part of the screen is blank. (Bottom left X-BOARD )
Check Check Check Bottom left X-BOARD 12V.( If 0V, it happens ) Check 12V line from SMPS to X-BOARD.
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LG Electronics
Symptom
Cause
Countermeasure
The connecting of X-Board bottom left connector is bad.
Reassemble it.
ADDRESS bar appears in the right bottom of the screen. (X-BOARD BOTTOM LEFT)
Check Check Check connecting of the connector of bottom left X-BOARD. Reassemble it.
X-BOARD BOTTOM LEFT CONNECTOR OPEN.
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LG Electronics
Examples
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LG Electronics
Symptom
Cause
Countermeasure
Connector(P13) is OPEN or Connecting condition is bad
Reassemble P13.
Screen is divided in top and bottom, and vertical bar appears.
Check Check P13 CONNECTOR contact point inferior CHECK. P13 CONNECTOR SIGNAL CHEK.
P13 CONNECTOR
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LG Electronics
Symptom
Cause
Countermeasure
VSC Board Connector is Open.
Reassemble VSC Board Connector
Screen is broken and has the vertical/horizontal bar.
Check Check Check the connector connecting Reassemble the Connector
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LG Electronics
Symptom
Cause
Countermeasure
Loose VSC Board Connector
Reassemble VSC BOARD Connector
The screen is bluish(Mosaic screen)
Check Check Check the connection condition of the Connector. Reassemble the Connector.
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LG Electronics
Symptom
Cause
Countermeasure
Bad IC203
Replace IC203(VPC3230D)
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.
Check Check
Check if X201 on VSC board oscillates. Check Video In/Out of IC203 on VSC board. IC201 (VPC3230D) Decoder IC
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LG Electronics
Y - Signal in Low Sensibility
IC201(VPC3230D) Decoder is inferior
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LG Electronics
Symptom
Cause Countermeasure
Bad Connector connecting Control Board and VSC B/D.
Change the Connector
Abnormal Noise with division of colors
Normal
Check Check Contact point and signal condition of Connector Control Board and VSC Board.
Bad Connector
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LG Electronics
Name
No signal Vertical Bar Symptom Cause and Countermeasure 1.Cause : Bad IC2 (DA1) IC2 DA1(Data Arrange) No.162 Pin output is changing depending on the temperature. abnormal X-B'd Buffer IC * Room temperature : 2.5V Output (Normal Pin = over 2.8V) * Heated : 1.5V Output(Normal Pin = 2.7V ) Bad IC2 (DA1) 2. Countermeasure : Replace IC2
< Waveform of normal pin> heated < Waveform of abnormal pin > heated
8cm
DA1 Buffer
DA1 Buffer
Realization When ASIC Chip(IC2 DA1 LGD4001) on Control Board gets high temperature, you can observe it (In normal temperature it's O.K. )
Buffer(74ACT541) waveform abnormally narrows. In this case, it is impossible for Flip Flop(74AC574) on X B/D to read data.
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LG Electronics
Name
Add Open (Green 1 Line) Symptom Cause and Countermeasure 1.cause: Add. COF Drive IC inferior
COF ?
Add. COF Drive IC
Normal Line Data waveform
Open Line Data output waveform
the output of inferior line less than that of the normal Line Add. COF Drive IC inferior COF inspection : 24V Open check (normal 50V)
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LG Electronics
Name
Vertical bar when Power off/on(Mis-discharge) Symptom Cause and Countermeasure 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
Realization
1.PDP Power on Mode external input (regardless of wire/wireless signal but it's easy to reenact in wireless signal) 2. Remove Power Cord (Power's off) 3.after about 20minutes, insert Power cord (automatically the Power's on and the vertical bar is shown as above)
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LG Electronics