Why should media never be stored in a humid environment?

Toner cartridges should always be disposed of following manufacturers guidelines because toner:

Which of the following are typical symptoms of a printer when using card stock that is heavier than
specified? (Select TWO).

A technician is working on a Laser/LED device and removes the photoconductor. The technician
then covers it with several sheets of paper. Why?

Which of the following items are important safety issues that a technician should know when
disassembling a device? (Select THREE).

At what stage in the Laser/LED printing process is residual toner and charge removed?

A client has a Laser/LED printer that is feeding media normally but is printing corrupted images.
Which of the following can help to eliminate the print engine as the problem?

A client has a Laser/LED printer that is feeding media normally but is printing totally blank output.
Which of the following could be the cause?

If a particular scanned document exhibits a background, a technician should advise the customer
to:

In a multifunction device, when either scanning a document to a software application or sending a
fax to another location, the resulting document exhibits a black line in the scanning lead edge to
trail edge direction. Which of the following should a technician address to resolve this issue?