Manual For Esa Plasma Tv Pdp4294lv1
Models Covered: PDP4294LV1 Contents - 112 pages: Safety Precaution Technical Specifications Block Diagram Circuit Diagram Basic Ope.
. SERVICE MANUAL Model: PDP4294LV1 Safety Precaution Technical Specifications Block Diagram Circuit Diagram Basic Operations & Circuit Description Main IC Specifications Product Specification of PDP Module Trouble Shooting Manual of PDP Module Spare Part List Exploded View If you forget your V-Chip Password. Safety Precaution The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to CAUTION alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclo sure that may be of sufficient magnitude to RISK OF ELECTRIC SHOCK constitute a risk of electric shock to persons. When replacing a MAIN PCB in the cabinet, PRODUCT SAFETY NOTICE always be certain that all protective are installed properly such as control knobs, Many electrical and mechanical parts in this adjustment covers or shields, barriers, isolation apparatus have special safety-related resistor networks etc. PDP4294LV1 MODEL: Technical Specifications 42” Plasma Display DATE FIRST ISSUED ISSUE RAISED BY CHECKED BY NUMBER OF PAGES REVISIONS ISSUED DATE DESCRIPTION RAISED BY: SPECIFICATION AGREED: SIGNATURE DATE R & D DEPARTMENT.COMMERCIAL DEPARTMENT. CONTINUATION PAGE Technical Specifications PDP4294LV1 NUMBER PAGES Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light 150ux (When measuring I, the ambient luminance ≦0.1Cd/m Viewing distance 50cm in front of PDP.
CONTINUATION PAGE Technical Specifications PDP4294LV1 NUMBER PAGES ELECTRICAL CHARACTERISTICS Power Input Voltage 100 240VAC Input Current 3.5 / 1.5A Maximum Inrush Current. Z sustain B/D: 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). Y drive B/D 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. 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 ISM.) and an order of many FET on/off of each DRIVER B/D with R,G,B each 8bit input.
Basic DC/DC con. DC/DC Converter part part: Being impressed 5V, Va,Vs, DC/DC converter makes 5V,Va,Vs,Vsetup,Vsc which is essential for each B/D. There is no DC/DC B/D in model 40 (1 POWER B/D). 50 embedded DC/DC B/D separately because of high power consumption. FPC (Flexible Printed Circuit): 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 Beta type(all of copper surface). 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. 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. Trouble shooting.
Fast check up what kind of defect? Defect Check model No. Of module,all connectors and cables. Check panel appearance Check PSU output (Va,Vs,5v) Check Y, Z b/dinput voltage Replace Y, Z b/d Replace ctrl b/d vertical defect? Check panel appearance Check COF.
Trouble shooting. Logical judgment what kind of defect? What kind of defect? Please follow the no display trouble shooting. Bar defect appeared? Vertical defect? Please follow bar defect trouble shooting.
Line defect Horizontal defect? Please follow the line defect trouble shooting. Mis –discharge Please follow the mis discharge trouble shooting. Trouble shooting. No display 1. Connector Confirm every Connector (PSU, Y-SUS, CTRL, Z-SUS) module may not be normal by mis-connection which can not send signal and power. Also Mis connection for a long time has a specific b/d failed.
Trouble shooting. Exhaust tip Crack Confirm exhausting Tip and find Crack with naked eyes to check vacuum state. If there is problem replace the module. In case of vacuum breakdown, module makes a shaking noise because of inside gas ventilation.
(there may be a small crack which could not see with naked eyes. Trouble shooting. PSU(Power Supply Unit) 1. Check each unit part of PSU inside with naked eyes. (capacitor, FET, a kind of IC, resistor) 2. Check FUSE and SW1 (on Normal).
Check Output voltage which is converted from AC V SW1 Normal to DC V. Trouble shooting. Confirm LED D17(flashing),13 lighting 2.
If not CHECK OSC X1 output. Input voltage 3. Check CTRL input voltage (CONNECTOR P300) 4. CHECK 3.3V, 5V,15V. Check IC 11 3.3V IC 3 2.5V OSC(X1) Probe Touching. Trouble shooting. Y-sus B/D Vscw 1.
Check FUSE FS1(5v),FS2(Vs). Check voltages(Vsetup,-Vy, Vscw) Vsetup 3. Check DIODE between GND and Y SUS output. Setdn SUSUP(OC2) SUSDN(OC1). Check whether output voltages agrees setup with voltage that represented in label. Trouble shooting. Check whether output voltages agrees with voltage that represented in label.
Check diode value GND between Y-SUS output. Normal diode value= 0.4 (forward) Normal diode value = OL (reverse). 4. Trouble shooting.
Check the FUSE. Check input voltages.(Va, 5V,15V) 3. Check FPC out put diode value. Check ramp waveform. Check input voltages Check the FUSE 5V FUSE Va FUSE 6.3A Vs FUSE 2A or 4A. Trouble shooting.
Variable resistance of Z RAMP waveform slope. Check FPC output diode value.
Caution: check certainly after removing FPC. Normal diode value=0.375(forward) Normal diode value=OVER LOAD(reverse). 4.
Trouble shooting. Power protection It is power protection when power is off automatically within 23 min. From power on. Power protection function protect the boards when occurred short on circuits of PDP module or power problem.
If can not impress power even after replacing PSU, find out where the short occurred. PSU makers. Trouble shooting.
Vertical defect (bar) 1. Connector Check here Check COF connector. If not connected well,it will Make a bar defect. Check here 2. Checking COF Confirm whether COF was torn.
And then check input of COF resistor and IC. COF 6 is torn partly Tearing.
Trouble shooting. Checking address COF input of resistor and IC COF resistor checking Check the both side of resistor With Digital multi meter(DMM).
If the resistor is normal, the resistor value will be 10.2 10.8. Trouble shooting. Checking address COF input of resistor and IC IC input checking Inside of IC, there is 4 ea diodes which separated in 2 series. (input 2, output 2).how to check 1.contact DMM - terminal to a right terminal of condenser(GND) and DMM + terminal to a right terminal of IC, normal value 0.66 (fig.1) 2.contact DMM - terminal to Output terminal of resistor, and DMM + terminal to a right terminal of IC, normal value 0.73 (fig.2). 4. Trouble shooting. Ctrl B/D CTRL B/D supplies video signal to COF.
So if there is a bar defect on screen, It may be the ctrl b/d problem. A flow of address signal In this figure, we can easily suppose what will be appeared on screen when a specific part failed. Trouble shooting. Vertical defect (line) 1 line open or short This phenomenon is due to COF IC inside short or adherence part of the Film and rear panel electrode problem. In this case, replace the panel.
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1 line open 1 electrode open Line open or short with same distance. Trouble shooting. Line defect from each parts.
Case 1: Buffer IC fail 16 line open COF IC 1,2 192 line(96+96) open. COF IC 3,4 64 line open (with fixed interval there is on,off. Repetition). case 2: Array resistor fail COF IC1 16 line, COF IC2 16 line open. Trouble shooting. Horizontal (bar) Most horizontal defects can be repaired.
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In case of adherence part of the Film and rear panel electrode defect or panel electrode open,short, replace the panel. Connector It can make a horizontal bar that connector on Y b/d and Z b/d did not plugged well. Because sustain voltage can not be supplied to panel. Trouble shooting. Scan IC check Check diode value of the right side part of output pin.
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Check here with DMM(either forward or reverse is ok) DMM + DMM. Trouble shooting. Horizontal (line) 1. Check FPC In case of horizontal 1 or more line, it is due to FPC or panel inside. Ctrl b/d, Y b/d is just normal.
FPC electrode open Panel electrode Insulation break down Horizontal 1 line. Trouble shooting.