Zenith R50V26 Service Manual

Also see for R50V26: Operating guide

Contents

Zenith R50V26 Service Manual Manual pdf 7 page image

PV154 - 923-03506 1-1 ZP26/28 - OVERVIEWOVERVIEWSECTION 1The R56/65W28 and R50/60V26 are HDTV Monitors. This means that most of the components of a HDTV are presentexcept for the ASTC tuner. An HDTV receiver or converter box is required to view an ASTC signal. The W28 models featurea 16:9 aspect ratio screen. But, it can display video in several different aspect ratios, including 16:9 and 4:3. Morefeatures and specifications are listed below.Currently the ZP-26/28 chassis is module level repair only. Schematics and PCB layouts are provided to assist introubleshooting. Follow the normal procedures required for module level repair.FEATURESENHANCED HD LENS SYSTEMNew 4 Element enhanced lens system improves brightnessand focus over the previous 25 series and provides amore natural looking and true-to-life picture.HD FOCUS (W28 MODELS)Automatic system that eliminates the need to manuallyadjust the picture. Simply select HD focus from theonscreen set-up menu, and in approximately 8-10seconds, over 8,000 points on the screen are adjusted,for perfect center to edge focus of the image.DIGITAL FOCUS ARRAY (V26 MODELS)New advanced convergence technology is more accuratethan previous digital convergence, and is set at thefactory by a computer. The 9-Point system actually looksat 117 points, since it interpolates between points,yielding an image that is sharp from center to edge.R56W28 & R65W28 R50V26 & R60V26OVERVIEWIMPROVED-HD DRIVERMost HDTVs use upconversion of analog signals (line-doubling) to simulate an HD picture, which introducesartifacts that appear as pixilated scenes due to digitalconversion. Improved-HD dramatically improves thisprocess and produces images free rom picture artifactsby increasing both vertical and horizontal resolution. TrueHD signals are not affected by this process, leaving themas true to life as possible.IMPROVED PICTUREZenith’s 26 and 28 series projection televisions feature a.52mm screen pitch, improved image scaling, and new 7"CRTs yielding sharper images and finer detail. Thisrepresents significant improvement compared to ourprevious 94/95/25 series. The screen also features ascratch resistant coating.3:2 PULLDOWN DETECTIONMost movies are shot on film, and film operates at a framerate of 24fps (frames per second), compared to videowhich operates at 30fps, 3:2 pulldown properly detectsand syncs film to video for smooth theater like picturesat home.