1. Red light flashes once — printhead lifted troubleshooting tutorial: www.nmark.com.cn/uploads/video/piaodaijihongdengshansuopaichufangfa/1.mp4
2. Red light flashes twice — out-of-paper troubleshooting tutorial: www.nmark.com.cn/uploads/video/piaodaijihongdengshansuopaichufangfa/2.mp4
3. Red light flashes three times — black mark sensor error troubleshooting tutorial: www.nmark.com.cn/uploads/video/piaodaijihongdengshansuopaichufangfa/3.mp4
4. Using banner paper — red light flashes four times, ribbon error handling: www.nmark.com.cn/uploads/video/piaodaijihongdengshansuopaichufangfa/4.mp4
5. Using cloth and ribbon — red light flashes four times, ribbon error handling: www.nmark.com.cn/uploads/video/piaodaijihongdengshansuopaichufangfa/5.mp4
6. Red light flashes six times — printhead over-temperature handling: www.nmark.com.cn/uploads/video/piaodaijihongdengshansuopaichufangfa/6.mp4
7. Red light flashes seven times — printhead voltage error handling: www.nmark.com.cn/uploads/video/piaodaijihongdengshansuopaichufangfa/7.mp4
8. Red light flashes nine times — cutter error handling: www.nmark.com.cn/uploads/video/piaodaijihongdengshansuopaichufangfa/8.mp4
