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单选题 When is it advisable to dump the waste toner from a technicians service vacuum?()

A

When it is full.

B

It is not recommended.

C

Before performing preventative maintenance.

D

After each call.

单选题 Which of the following is a reason black toner is used in color printers?()

A

It decreases the print speed in color laser printers.

B

It prevents moir patterns when printing color photographs.

C

It reduces the cost per page when printing gray scale documents.

D

It makes the color toner resistant to smudging when wet.

单选题 A polygon mirror is part of which of the following assemblies?()

A

Laser unit

B

Developer unit

C

Charge assembly

D

Fuser assembly

单选题 When arriving at the customers location, two different users describe the problem, and from their description it seems to be two separate problems. Which of the following is an appropriate step to take?()

A

Ignore both of them and decide what the real problem is.

B

Set up a separate call for each problem.

C

Have them duplicate the problem at the device.

D

Ask a third person and see if the problem is the same thing.

单选题 An encoder sensor typically detects:()

A

paper position.

B

shaft rotation.

C

magnetic flux.

D

laser beam strength.

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