Philips 200P7ES/00 Service Manual

13200P7 LCDGo to cover pagePhilips' Flat Panel Monitors Pixel Defect PolicyPixels and SubpixelsTypes of Pixel DefectsPhilips strives to deliver the highest quality products. We use some ofthe industry's most advanced manufacturing processes and practicestringent quality control. However, pixel or subpixel defects on the TFTLCD panels used in flat panel monitors are sometimes unavoidable.No manufacturer can guarantee that all panels will be free from pixeldefects, but Philips guarantees that any monitor with an unacceptablenumber of defects will be repaired or replaced under warranty.This notice explains the different types of pixel defects and definesacceptable defect levels for each type. In order to qualify for repair orreplacement under warranty, the number of pixel defects on a TFT LCDpanel must exceed these acceptable levels.For example, no more than 0.0004% of the subpixels on a 15" XGAmonitor may be defective. Furthermore, Philips sets even higher qualitystandards for certain types or combinations of pixel defects that aremore noticeable than others. This policy is valid worldwide .A pixel, or picture element, is composed of three subpixels in theprimary colors of red, green and blue. Many pixels together form animage. When all subpixels of a pixel are lit, the three colored subpixelstogether appear as a single white pixel. When all are dark, the threecolored subpixels together appear as a single black pixel.Other combinations of lit and dark subpixels appear as single pixels ofother colors.Pixel and subpixel defects appear on the screen in different ways.There are two categories of pixel defects and several types of subpixeldefects within each category.Bright Dot Defects Bright dot defects appear as pixels or subpixels thatare always lit or "on".These are the types of bright dot defects:One lit red, green or blue subpixelTwo adjacent lit subpixels:- Red + Blue = Purple- Red + Green = Yellow- Green + Blue = Cyan (Light Blue)Three adjacent lit subpixels(one white pixel)Black Dot DefectsProximity of Pixel DefectsPixel Defect TolerancesBlack dot defects appear as pixels or subpixels that are always dark or"off".These are the types of black dot defects:One dark subpixelTwo or three adjacent dark subpixelsBecause pixel and subpixels defects of the same type that are nearbyone another may be more noticeable, Philips also specifies tolerancesfor the proximity of pixel defects.In order to qualify for repair or replacement due to pixel defects duringthe warranty period, a TFT LCD panel in a Philips flat panel monitormust have pixel or subpixel defects exceeding the tolerances listed inthe following tables.Note:* 1 or 2 adjacent sub pixel defects = 1 dot defectYour Philips monitor is ISO13406-2 CompliantBRIGHT DOT DEFECTS ACCEPTABLE LEVELMODEL 200P71 lit subpixel 3 or fewer2 adjacent lit subpixels 1 or fewer3 adjacent lit subpixels (one white pixel) 0Distance between two bright dot defects* 15 mm or moreTotal bright dot defects of all types 3 or fewerBLACK DOT DEFECTS ACCEPTABLE LEVELMODEL 200P71 dark subpixel 5 or fewer2 adjacent dark subpixels 1 or fewer3 adjacent dark subpixels 0 or fewerDistance between two black dot defects* 15 mm or moreTotal black dot defects of all types 5 or fewerTOTAL DOT DEFECTS ACCEPTABLE LEVELMODEL 200P7Total bright or black dot defects of all types 5 or fewer