Alarm flashing goes to prop - OKI MICROLINE 321 Turbo Matrix Printer

Yellow, orange lights are warnings. Visit a repair shop soon. Red lights are alarm. shut down the engine and consult a tech direct.

Most likely, you need to lubricate the shaft the head moves on and clean the positioning tape (carefully, the marks on it can be dissolved).
Unplug the printer while it's moving the head, so you can manually move the head around. Use light oil, such as used in sewing machines.

alarm module is faulty, check your keys battery, change it and it will disarm the alarm

The alarm system has a sensitivity control and it needs to be turned down. This cannot be a factory alarm system?

Hi, I have the same problem, my solution is: change the cooler in bottom of the printer.

Your alarms are interconnected, meaning when one alarm goes off, they all go off. The alarm with the flashing green light is the one that triggered the alarm. If it only went off once, it was probably just fluke thing, and you can reset the alarm memory (flashing green light) by pressing the test button. If it happened more than once, you should try cleaning the alarm. Do this by removing the alarm, and blowing compressed air into the sensor opening (located around the back side perimeter of the alarm). If this fails, replace it.

Hi,
Is the front cover on the printer(ifs its not the alarm light will keep flashing as there is a sensor that will trigger the alarm if the cover is not on or not on properly.Hope this helps?
Dezzi

What driver are you using ? the default driver should be IBM Proprinter.
Hope this helps
Dezzi

Check if the Pico fuse is blown ? next to the heat sink on the transisitor array with the number 2025.if the fuse is gone than the fuse plus the 2025 transistor must be replaced.
Dezzi

Cover on these are often broken causing the two little switch's to not close on left and right of lid