420B printer red light alarm when printing

Question : 420B printer red light alarm when printing ,how to solve ?


1,  let the printer restore  the default setting ( press the feed key , then  turn on the power , when hear two beeper sound ,than loose hand . the printer will restore the default setting )

2,  before printer ,   press the feed key , let the paper go out  smoothly , then start to print


Contact: Tom

Phone: 13533218274

Tel: 020-879612001

Email: Lankecms@163.com

Add: Building A, Huabiao Plaza, No. 601 Tianhe North Road, Tianhe District, Guangzhou,Guangdong province,China

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