A customer is concerned about excessive media jamming in their device. Which of the following is the FIRST thing a technician should check？（）

单项选择题Thepropersafetyguidelinesforhandlinganydevicespecificconsumablescanbefoundinwhichofthefollowingdocumentation？（）

A.Material Safety Data Sheets
B.Installation Guides
C.Consumer Reports
D.Devices Parts Catalog

单项选择题Whichofthefollowingcomponentsispartoftheinkdispersionsystem？（）

A.Print Heads
B.Cleaning heads
C.Pickup Roller
D.Charge Assembly

多项选择题Duringthephotoconductorpreparationstep，residualchargecanberemovedbywhichofthefollowing？（）

A.Pressure
B.Oil
C.Light
D.Gravity
E.Electrical Charge

单项选择题InwhichofthefollowingsectionsofanMFPwouldatechnicianfindaXenonLamp？（）

A.The paper feed section
B.The fuser section
C.The scanner section
D.The transfer section

单项选择题Apolygonmirrorispartofwhichofthefollowingassemblies？（）

A.Laser unit
B.Developer unit
C.Charge assembly
D.Fuser assembly