你可能感興趣的試題

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.

單項(xiàng)選擇題

A technician has just installed a new power supply into a desktop computer and now the computer will not turn on. Which of the following is the MOST likely cause?（）

A. The voltage selector switch on the power supply is set incorrectly.
B. The 3.3v power line is connected to the wrong input on the motherboard.
C. The new power supply voltage rating is too high.
D. The 12v power cord is installed incorrectly.

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Which of the following is the BEST tool to troubleshoot a DB-9 port?（）

你可能感興趣的試題

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 technician has just installed a new power supply into a desktop computer and now the computer will not turn on. Which of the following is the MOST likely cause?（）

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?（）