遇到连接问题如何排查无线连接错误?

确保无线上网功能开关已开启,打印机与接入点之间信号覆盖范围小于30米(100英尺),并确认打印驱动程序已经在电脑上安装。(Page 4)

From the official HP Laserjet Pro M402 M403 manual, page 4

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