Question about Paxar Monarch 9850 Thermal Printer
The printer is showing error code 754 check ribbon. I replaced the ribbon to no luck and I made sure that the used ribbon spool was tight. I have tried to unplug it for a few minutes to clear the error, but no luck.
It's very possible you are not installing the ribbon properly.
When loading a new ribbon on a Monarch printer, you must save the plastic ribbon core (it's butter yellow in color) from the previous roll of ribbon. The core is what the ribbon is wound up on.
Do not throw away this plastic core - you need it for the next roll of ribbon you load!
You have to move this now empty core from the back ribbon spindle and slide it on the front ribbon spindle. You then load the new ribbon on the back spindle and attach the ribbon end to the empty plastic ribbon core on the front spindle.
You CAN NOT just tape the ribbon to the front spindle. You must have an empty ribbon core to attach the new ribbon to. The printer will give a 754 error unless you have two plastic cores on the two spindles. It can also give a 754 error if the ribbon is not loaded properly, and also if you have a bad motherboard. There are no ribbon sensors, so that's never going to be a problem...
Posted on Oct 17, 2012
Surely the ribbon sensor is dirty and needs to be cleaned, it is necessary to uncover and clean the equipment. This is where you put down the new ribbon.
Posted on Mar 10, 2009
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Posted on Jan 02, 2017
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