单项选择题How many CCDs are located in a single pass duplex ADF?()

A.One
B.2
C.3
D.4


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2.单项选择题Which of the following would be the BEST process for the technician to follow when beginning to diagnose a unit at a customers site?()

A.Check the printers error log, and then inform the primary user what the issue is.
B.Go directly to the printer and investigate any issues that are found.
C.Investigate the printers status, then ask the primary user to write down what they think is wrong.
D.Gather information from the primary user, and then evaluate the printers condition.

4.单项选择题The customer has a dedicated ink jet fax machine that is used to send and receive faxes only from the corporate office. The user complains of streaks on the received faxes while the internal self-prints are fine. Which of the following should a technician recommend?()

A.Clean the scanner glass on the distant machine.
B.Clean the scanner glass on the local machine.
C.Clean the printer head on the local machine.
D.Call the telephone company to increase the line signal level.

5.单项选择题An encoder sensor typically detects:()

A.paper position.
B.shaft rotation.
C.magnetic flux.
D.laser beam strength.

6.单项选择题Which of the following functions is associated with the developer unit?()

A.Supplies toner to the photoconductor
B.Charges the surface of the photoconductor
C.Writes the latent image on the photoconductor
D.Cleans the photoconductor

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