单项选择题

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

A.Media feed rollers
B.Cassette drawers
C.Fusing section
D.Device log data

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单项选择题

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

单项选择题

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

多项选择题

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