单选题Which of the following is the recommended maintenance for a laser printer？ （）AClean all fan filters； wipe down the paper path and re-adjust the corona wire.BClean all pickup rollers； re-adjust the corona wire and replace the fuser assembly.CClean all pickup rollers； replace the fuser assembly and clean all fan filters.DClean all pickup rollers； wipe down the paper path and clean all fan filters.
单选题
Which of the following is the recommended maintenance for a laser printer？ （）
A
Clean all fan filters； wipe down the paper path and re-adjust the corona wire.
B
Clean all pickup rollers； re-adjust the corona wire and replace the fuser assembly.
C
Clean all pickup rollers； replace the fuser assembly and clean all fan filters.
D
Clean all pickup rollers； wipe down the paper path and clean all fan filters.
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