Zenith C32V23 Service Manual

Also see for C32V23 - 32" Flat-Screen Integrated HDTV: Operating guide & warranty

PV154 - 923-03497 1-1 AB - OVERVIEWOVERVIEWVideo Output/SVM ModuleKeyboard Module Front JackpackMain ModuleDigital BoardScan Boost ModulePower Supply ModuleSECTION 1INTRODUCTIONThe affordable Digital High Definition Television (ADTV) uses the Zenith AB chassis series. This manual covers the 32, 36,and 34 inch screen sizes. The chassis consists of two boards, the large signal and small signal. The large signal moduleuses a daughter board for the deflection section and the small signal board uses a shielded board for HDTV signaldecoding. Currently the AB chassis is module level repair only. Schematics and PCB layouts are provided to assist introubleshooting.These models are HDTVs and have a built-in ASTC tuner. They can receive off-air analog and/or digital broadcasts. The 34inch models feature a 16:9 aspect ratio screen and the 32 and 36 inch are standard 4:3 aspect ratio. More features andspecifications are listed below.FEATURESINTEGRATED ATSC TUNER WITH 1080IA fully integrated ATSC tuner offers users the abilityto receive off air high definition broadcasts (up to1080i resolution) without the need for an externalset-top box.ADVANCED 8-VSB CHIPSET TECHNOLOGYOffers better indoor reception of off-air DTV broadcastsand makes the procesing of broadcasted data possible.FLAT FINE PITCH PICTURE TUBEView HD content in it’s highest resolution. Fine pitchpicture tube with Invar mask provides the sharpestand clearest picture possible.16:9/4:3 ASPECT RATIO CORRECTIONAllows users to view feature length movies in theiroriginal wide screen format (16:9) or in regular TVformat (4:3).3D Y/C COMB FILTERCombines the adaptive digital processing of a 3-linedigital comb filter with 3-D motion detection.Eliminates hanging dots and color noise on stationaryimages. Reduces “dot crawl”and overall picture noise.OVERVIEWSCAN VELOCITY MODULATIONDynamically varies the scanning speed of the electronbeam to create clear, well defined images for the sharpestpicture possible.DYNAMIC FOCUSEnsures accurate side-to-side focus. Red, green, andblue color beams are accurately aligned in the centerof the screen.COLOR TEMPERATURE CONTROLUsers can select between “warm” or “cool” presets tocontrol the ambiance and mood of the picture on thescreen.FRONT SURROUND SOUNDAudio signals are manipulated to simulate threedimensional sound delivered through two frontspeakers.MTS STEREO WITH SAPMulti-Channel Television Sound (MTS) produces crisp,clear stereo broadcasts. Second Audio Programming,or SAP, is a separate audio signal that allows networksto broadcast audio in different languages.