单选题A laser printer displays ‘perform user maintenance’. The manufacturer’s information was not available when the user performed the maintenance, and the laser printer continues to display the maintenance code. Which of the following items needs to be performed?（）AThe printer needs to be sent to the manufacturer for maintenance.BThe printer’s firmware needs to be updated.CA printer system reset must be performed.DThe maintenance page counter must be reset.
单选题
A laser printer displays ‘perform user maintenance’. The manufacturer’s information was not available when the user performed the maintenance, and the laser printer continues to display the maintenance code. Which of the following items needs to be performed?（）
A
The printer needs to be sent to the manufacturer for maintenance.
B
The printer’s firmware needs to be updated.
C
A printer system reset must be performed.
D
The maintenance page counter must be reset.
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