21AVR-4308CIUnless specified, 1U-3800-1 A.VIDEO UNIT part.IInputCVBSCheck 5VA and +5VD.+5VA : CW082-3,4pin-5VA : CW082-1,2pin+5VD : CW132-1pinNG To troubleshooting 1.1 Power not turnon.OKCheck input/output of analog SW.Input : IC420-13pinOutput : IC420-3pinNG Check analog SW settings.IC420-9,10,11pin : L(0V)IC420-6pi : L(0V)NG Check IC505, IC508 and CW132soldering, or DIGITAL UNIT flaw.OKOK Check soldering of IC420.Check input/output of AMP.Input : IC409-5pinOutput : IC409-7pinNG Check soldering of IC409 andsurrounding parts.OKCheck output to 1U-3799 DIGITAL UNIT.Output V : CW113-5pinNG Check soldering of CW113.OK1U-3800-2 VIDEO CONNECT UNITCheck input of video driver.Input Y : IC703-8pinInput C : IC703-2pinNG 1U-3800-2 VIDEO CONNECT UNITCheck CX093 soldering, or DIGITALUNIT flaw.OKCheck output of video driver.Output Y : IC703-25pinOutput C : IC703-29pinNG Check soldering of IC703.OKCheck input/output of analog SW.Input Y : IC415-5pinInput C : IC415-14pinOutput Y : IC415-3pinOutput C : IC415-13pinNG Check analog SW settings.IC415-10pin : H(+5V)IC415-9pin : L(0V)NG Check IC506 and CW132 soldering, orDIGITAL UNIT flaw.OKOK Check soldering of IC415.Check input/output of AMP.Input Y: IC404-3pinInput C: IC404-5pinOutput Y : IC404-1pinOutput C : IC404-7pinNG Check soldering of IC404.OKCheck cable between main unit and mon-itor or Check monitor.NGOKNG NGOKOKNGOKNGOKNGOKNGOKNG NGOKOKNGOKw w w . x i a o y u 1 6 3 . c o mQ Q 3 7 6 3 1 5 1 5 0 992894298T E L 1 3 9 4 2 2 9 6 5 1 3 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299http://www.xiaoyu163.comhttp://www.xiaoyu163.com