# In self test

B1: Tắt máy in đi

B2: Ân giữ nút feed 

B3: Bật nguồn máy in (vừa giữ nút feed vừa bật nguồn)

B4: Đợi khi đèn sáng nháy 3 4 lần màu đỏ chuyển qua màu tím bỏ tay ra

B5: Tắt máy in đi bật lại 

{% embed url="<https://www.youtube.com/watch?v=yEF_p6Ngjh0>" %}


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