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ID:43445532
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页数:7页
时间:2019-10-03
《FANUC的CRT无显示故障维修_设计艺术_人文社科_专业资料》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、(原创)FANUC的CRT无显示故障维修2009-05-0710:24:00
2、分类:维修与保养
3、标签:fanuc车床数控crt无显爪
4、举报
5、字号大中小订阅首先查CN2电源是否正常,检查结果正常。拆下CRT的电源板,逐个测量板子上的R709(16Q).Q71(型号A777)、Q72(D866A)、IC71(TL494CN)、C706、C70&C709(470pf,350v),当检查到Q72时,发现不正常,更换一个后,开机,显示正常。另冇两次是Q71和TL494CN损坏。再就是存储板损坏和CN1的电缆断路也会无显示。■.控制单元CRT,PDP,或EL单元存储卡CCX5图形卡CCX4(MR-
6、20RMD)1RVDO1480V2HSYN1590V3VSYN16100V4GVDO17110V5BVDO1812OV61913720当使用图形卡时,将视频信号连接到CCX4H20.FH20.FCN1(MR-20RM)M60(MR-20RMD)1RVDO8OV2HSYN「9ov3VSYN10OV4GVDO11ov一5BVDO12ov6713电源单元9*CRT单元1(黑白)onCP15(SMS6RM),CN2(SMS6RhM)123OV4OV5*24V6令24V电巍侧插头(CM5)外壳:JAPANFCISMS6PF4-5触点:JAPANFCIRC16M-23T3或RC1«A-SCT312
7、3OV4OV5+24V6>24V2SA0777(2SA777)SiliconPNPepitaxialplanertypeForlow-frequencydriveramplificationComplementaryto2SC1509Features•HighcollectorioetninervolugeVceo・•Opiimumtorthedriversurgeofalow-frequeneyand25io30Wouipuiamplifier.AbsoluteMaximumRatingsiTi=25X)ParameterSymbolRatingsUnitColkclortohasi
8、voltaiz^、CEQ-soVCollec-oriocmincrvoli3Eiwvczo-80VEmiltcrtobagvollaszeEHO一vVPiakcolkctorcurrcnlkp-1ACoUcctorcurrentlc-0.5ACollectorpwcrdissipationPc750mWJurx:liontempiraturs150,cSiorac:temp-raturc丁沁-55-^150scUm::mm43丈lfinilier[心11曲2r3:BiSeEIAJ:SC3TU-J2LPHkneElectricalCharacteristicsila=25=CjPara
9、meterSymbolConditionsmintypmaxUnitColkclorCLtoftcurrsnlki?oVCB=-20V.lE=0-0JuAColleciortohawvoliaeeVCBOlc=-10uA-Ie=0-80VCollectortocmittsr-oltaESVaalc=-1OOuAlB=0-soVEmittertohassvoltaizc1E二-lOuA-=0••VForwardcurrinttranskrratiohfE:"VcE^-lOV:!c=-i50mA90220hp£2Vce=-5V.lc=-500mA50100Qilledc.samratio
10、nvc;:Lg2lc=-SOOtnA.lR=-30mA-0.2-0.4VBintoemincrsaturauonvoltacelc--300mA上=-30mA-0.85-1.2VIransitionfrequency&VCH=-10V:1£=50mA.f=l(X)MHz120MHzColkctorOLtputcapaciianciVCH=-l0V."=af二IMHz1120甘^5D866Z2SD866A>u□>NPN工夕±形/SiNPNEpitaxialPlanar電力灭彳二丹小用/PowerSwitching2SB870U/ComplementaryPairwith2SB870■特徴
11、/Features•nk7夕・工夕煞l和Kt圧VmM(低宀/LowVLt<5tl)•血就血沈吗幅率hritCO点編性力V讥/Goodlinearityof•nlzjz夕電流Ic加大Qs./Highlc■絶対聂大定格/AbsoluteMaximumRatings(Ta=25rC)ItemSymbolValueUnit7夕•2SD866Vc«130VY-叉龟圧2SD866A150口“夕夕•2SD866Veto80V工?•罗夕電圧2SD866A100
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