Hitachi CM640U Service Manual

CM640U
HITACHI
CM640ET
(V1.0)
SERVICE MANUAL
CAUTION : Before servicing this chassis , it is important that the service personnel
must read the" Safety Precautions "and" Product Safety Notice" in this
Service Manual.
CONTENTS
SAFETY. PRECAUTIONS «x. cdi pateveriad capcinedacuntsatbienntiontdece dnsetutecinmnamaaeas 2
CHECK OF HIGH VOLTAGE HOLD DOWN CIRCUIT ..............6 3
PRODUCT SAFETY NOTICE <cps.cscctecssscecaicccsctccrenieananseernetey smnianvants 3
FEATURES ovssiayncacensaitaiicvan enon yendonntn oenntdv anes ecetyndaduantibenveuexuat@icesenetiaages 3
SPECIFICATIONS: 'iisecpercvetssteccsarestncnasetieseota sven tagngrersmnbiomaebeannadninenl 6
DESCRIPTION "OF : CIRCUIT... ccccssssszetsactansans vaddnceda donsquusenseaveaaateacnetantes 9
PD SUS TIMEN GS: iss sicccacespsh shia. tse cisnetessivansaaynguiles aves eleven anv ade tantansia basing 11
BLOCK: DIAGRAM sistscascssissccsicdsscnenanetitenadsabaaaderianiuacnteateeaiondessarses 16
VVIRING * DIAGRAMS iscsi iisctiicssssastaiecvancscnsernscuceeusnchotntsistenevsuacertedosdansetetes 17
PRINTED WIRING BOARD ASS uuu... cccccceeseeesseeesseeeeerseeeeeeeeees 18
BASIC CIRCUIT DIAGRAM ou... ccc ceccceserseeeestsseessesseessseseeeeseenees 20
CMG40 "ASS 'Y DWG 0 ios. iassiudisciassnssianleadiandten vanssseiavsssarelardeesdedaatesissocey 2
TROUBLE = SHOOTING) cfacdecsescr aaa Sacto scccansaaseatdadi nd tates uname ak 23
REPLACEMENT PARTS LIST uuu. sescsssccsscesseteieeeasonsrenensenens 29
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
HIGH RESOLUTION COLOR DISPLAY MONITOR
SEPTEMBER 1998