20 Most Recent OKI MicroLine 420 Matrix Printer Questions & Answers

As the alarm is on and steady then you most probably knocked the change lever into a position where it detects no paper loaded. The easiest way to check is to load your paper and move the change lever until the error lamp goes out!

The machine needs to be cleaned.

low on ink. Need to replace

I want to be able to print more than 1 copy at a time with out having to adjust the start up line after every Print. It was working fine until I swapped out computers and I even used the disk to install it and I have tried everything and it will not work

just saw this yesterday. remove the top rear paper guide. on the left side between the tractor feed and the input slot for the paper, there is a sensor flag that pivots. check for paper scrap caught under the flag. it prevents the flag movement, causes a paper out alarm.