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                            1、首先關閉打印機電源。
2、打開前蓋，按住開始鍵不松開的同時開電源，這時候會亮三個燈然后松開開始鍵。
3、連續按9次開始鍵，又亮三個燈。
4、再按1次開始鍵，最后會只亮一個燈。
5、關閉前蓋，清零正常。
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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