Camera维修指引

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1、DOCUMENTTYPE8(8)TypeUnitOrDepartmentHereTypeYourNameHereTypeDateHereCamera维修指引1.1Camera的工作原理简介:Camera硬件加速器(N3303)中央处理器显示屏1.2.硬件加速器的主要功能1).对镜像信号的处理.2).抓取从传感器过来的原始图象数据并将其转换成UPP能够处理的基带信号.3).实行白平衡的控制并对传感器的暴光参数进行设置.4).实行数码变焦功能.5).对视频片断进行处理.1.3Camera模块的基本组成镜头感

2、光底层传感器DOCUMENTTYPE8(8)TypeUnitOrDepartmentHereTypeYourNameHereTypeDateHere1.4BarracudaPCBA截图N3303硬件加速器CameraN3301供电模块P1P6P7P12X3301DOCUMENTTYPE8(8)TypeUnitOrDepartmentHereTypeYourNameHereTypeDateHere1.5N3303硬件加速器PN结10987654321K0.593GND∞NULL0.593NULL1.587

3、GNDGNDGNDKJGND1.58JH0.7380.7150.593∞GNDGND0.593GNDHG0.7260.722∞∞GX2700F1.601∞N3303∞∞FX3301EGND1.603NULLNULLED0.5930.723NULLNULLDVDD(VOUT)CNULLGNDNULLGNDGNDGND0.593NULLCGNDBGNDGNDBA0.7220.593GNDGNDNULLGNDGNDNULLNULLGNDA109876543211.6X3301Camera座PN结阻抗(反向)0

4、6.0M6.0M0.43M6.0M6.0M阻抗(正向)07.7M7.8M1M7.6M7.6MPN00.760.760.330.760.76电压0001.800功能GNDCCPCLKNCCPCLKPVOUTCCPDATANCCPDATAPPin789101112X2002X3301Pin654321功能CCISDACCISCLEXTCLKXSHUTDOWNVFLASH1VCAP电压1.81.80.8861.782.750PN0.420.420.420.420.6∞阻抗(正向)1.3M1M2.28M2.28

5、M0.6M∞阻抗(反向)0.45M0.45M1.4M1.4M170K∞13MHzDOCUMENTTYPE8(8)TypeUnitOrDepartmentHereTypeYourNameHereTypeDateHere1.7相关测试点正反向PN结J3348:1.066J3346:1.085J3347:1.083J3350:1.089J3345:0.761J3349:0.785J3348:0.412J3346:0.411J3347:0.637J3350:0.414J3345:0.412J3349:0.416

6、反向PN结测试值:J3350J3348J3345J3346J3349J3347正向PN结测试值:注:正向PN结有时是1.0,有时为0.7.而其它值则异常.1.8Camera的相关坏项及其描述42784StartCameraTestsRetry1------------尝试启动Camera的照相功能32768FeatureExecuteDccApi---------------测试台对手机写入Camera功能配置文件包6687CheckCameraBrightness-------------检查摄像头的

7、亮度45498CheckCameraDeadpixelsRetry----检查摄像头的坏点1.9Camera故障现象描述1).自检Ｆail.2).自检ＯＫ,a.Cameracontroltestfail,手机电流无变化．　　　b.Cameracontroltestfail手机流在85mA到120mA之间跳变．DOCUMENTTYPE8(8)TypeUnitOrDepartmentHereTypeYourNameHereTypeDateHere1.10Camera坏项维修New&CurrentConfig

8、urationVersion是否一致？ReadCameraConfigurationCameracontrolOK?打开Phoenix–TestingSelftestOK?重测FinUIPassUploadOKNoNo更换X3301接下页32768流程图No重测或更换Camera检查X3301各引脚正反向PN结OKOK接下页42784流程图Camera相关坏项NoOKOK值得提醒是”CameraConfiguration”不是所有的”Pho